Mitsubishi Purifier Manual

69
Instruction Manual Operation Manual 1 Precaution in safety. Configuration and structure of SELFJECTOR

description

Marine Diesel Engines

Transcript of Mitsubishi Purifier Manual

Page 1: Mitsubishi Purifier Manual

Instruction Manual

Operation Manual 1 Precaution in safety. Configuration and structure

of SELFJECTOR

Page 2: Mitsubishi Purifier Manual

Contents (1 / 3)

1 Precautions in safety .......................................................................................................................... 1-1

1.1 Symbols related to safety ................................................................................................................... 1-1 ................................................................................................................................. 1.2 Labels for safety 1-2

............................................................................................................................. 1.3 Safety precautions 1-3 1.4 Definition of terms .............................................................................................................................. 1-5

2 Configuration of oil purifying system ............................................................................................ 2-1

2.1 Gear pump ......................................................................................................................................... 2-2 2.2 Oil heater ............................................................................................................................................ 2-2 2.3 3-way cylinder valve ........................................................................................................................... 2-2 2.4 Multi- Monitor (MM) ............................................................................................................................ 2-2

...................................................................................................... 2.4.1 Leakage Monitor Function (LM) 2-2

................................................................................................. 2.4.2 Discharge Detector Function (DD) 2-2

....................................................................................................... 2.4.3 Water Detector Function (WD) 2-3

2.5 Starter ................................................................................................................................................. 2-3 ...................................................................................................................................... 2.6 Control panel 2-3

2.7 Alarm panel ........................................................................................................................................ 2-3 2.8 Kinds (specifications) of oil purifying system ..................................................................................... 2-3 2.9 Component devices of different versions .......................................................................................... 2-4

.............................................................................................................. 2.10 Feature of Automatic types 2-4

3 STRUCTURE of SELFJRCTOR ...................................................................................................... 3-1

............................................................................................................................................... 3.1 General 3-1 3.2 Drive unit ............................................................................................................................................ 3-1 3.2.1 Vertical shaft section ....................................................................................................................... 3-1 3.2.2 Horizontal shaft section ................................................................................................................... 3-2

.............................................................................................................................................. 3.2.3 Brake 3 - 2 3.2.4 Friction clutch .................................................................................................................................. 3-2

.................................................................................................................................................... 3.3 Bowl 3-3 3.3.1 Structure of bowl ............................................................................................................................. 3-3 3.3.2 Discharge mechanism .................................................................................................................... 3-4 3.4 Water supplying device ...................................................................................................................... 3-6 3.5 Centripetal pump ................................................................................................................................ 3-7

........................................................................................... 3.6 Purifier operation and clarifier operation 3-8 ............................................................................................................................. 3.6.1 Purifier operation 3-8

3.6.2 Clarifier operation ............................................................................................................................ 3-9 3.7 Parallel operation and series operation ........................................................................................... 3-10 3.7.1 Parallel operation .......................................................................................................................... 3-11 3.7.2 Series operation ............................................................................................................................ 3-12

ASELFJECTOR Instruction Manual Operation Manual 1

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Contents (2 1 3)

4 Motor, starter and control panel ...................................................................................................... 4-1

.................................................................................................................................................. 4.1 Motor 4-1 4.1.1 Precautions in handling ................................................................................................................... 4-1 4.1.2 Motor characteristics ....................................................................................................................... 4-1 4.1.3 Motor structure ............................................................................................................................. 4 - 3 4.1.4 Rated current intensity .................................................................................................................... 4-3 4.2 Starter ................................................................................................................................................. 4-4 4.2.1 Precautions in handling ................................................................................................................... 4-4 4.2.2 Starter structure ............................................................................................................................... 4-4 4.2.3 Overload relay (thermal relay) ........................................................................................................ 4-4 4.2.4 Connection of Starter ...................................................................................................................... 4-5

..................................................................................................................................... 4.3 Control panel .4-6 ................................................................................................................... 4.3.1 Precautions in handling 4-6

4.3.2 Control panel (model GBC-1) ......................................................................................................... 4-7 4.3.3 Control panel (model GBC-2) ......................................................................................................... 4-9 4.3.4 Control panel (model GSH-1) ................................................................................................. 4-1 1 4.3.5 Alarm panel (GAP-1 1) ............................................................................................................. 4-13 4.4 Control Unit (GBC-1, GBC-2) ....................................................................................................... 4-1 5 4.4.1 Control Unit ................................................................................................................................... 4-1 6 4.4.2 Terminal Unit ................................................................................................................................. 4-17

........................................................................................... 5 Programmable logic controller (PLC) 5-1

5.1 Programmable Controller ................................................................................................................... 5-1 5.2 Programmable Controller Configuration ............................................................................................ 5-1 5.2.1 CPU Board ...................................................................................................................................... 5-1 5.2.2 Operation Display Panel ................................................................................................................. 5-1 5.2.3 Expansion Board (Option for Indication of Water Content) ............................................................ 5-2 5.3 Functions of Individual Parts of Programmable Controller ................................................................ 5-2 5.3.1 CPU Board ...................................................................................................................................... 5-2 5.3.2 Functions of Individual Parts of CPU Board ................................................................................... 5-3 5.3.3 Functions of Input and Output Display LEDs ................................................................................. 5-4 5.4 Operation Display Panel .................................................................................................................... 5-5

........................................................ 5.4.1 Functions of Individual Sections of Operation Display Panel 5-6 ............................................................................................................... 5.4.2 Expansion Board (Option) 5-8

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Contents (3 1 3 )

6 Multi-Monitor ....................................................................................................................................... 6-1

6.1 Multi-Monitor ....................................................................................................................................... 6-1 6.1.1 General ............................................................................................................................................ 6-1 6.1.2 Kind of Multi-Monitor ....................................................................................................................... 6-2 6.1.3 Explanation of internal switches on Multi-Monitor .......................................................................... 6-3 6.1.4 Identification and Location of Multi-Monitor Sensors ..................................................................... 6-5

............................................................................................................................... 6.1.5 Routine running 6-5 6.1.6 Precautions in handling ................................................................................................................... 6-5 6.2 Leakage Monitor Function (LM) ......................................................................................................... 6-6 6.2.1 General ...................................................................................................................................... 6 - 6

.......................................................................................................................... 6.2.2 Operating principle 6-6 ......................................................................................................... 6.2.3 Connecting with control panel 6-7

6.2.4 LED display ..................................................................................................................................... 6-8 ............................................................................................................................... 6.2.5 Routine running 6-9

6.2.6 Items to adjust ................................................................................................................................. 6-9 6.2.7 Factory settings (main value) ........................................................................................................ 6-10 6.3 Discharge Detector Function (DD) ................................................................................................. 6-11 6.3.1 General .......................................................................................................................................... 6-11 6.3.2 Operating principle (Alarm function) ............................................................................................. 6-11 6.3.3 Connecting with control panel ....................................................................................................... 6-11 6.3.4 LED displays ................................................................................................................................. 6-12 6.3.5 Routine running .............................................................................................................................. 6-13 6.3.6 Items to adjust ............................................................................................................................... 6-13 6.3.7 Precautions in handling ................................................................................................................. 6-13 6.4 Water Detector Function (WD) ........................................................................................................ 6-14 6.4.1 General .......................................................................................................................................... 6-14 6.4.2 Pressure sensor type water detector (GSH-1lMM-3) ................................................................... 6-14 6.4.3 Electrostatic capacity type water detector (GSH-1lMM-2) ........................................................... 6-18 6.5 Partial discharge detection function (GSH-1) .................................................................................. 6-19 6.5.1 Operating principle ........................................................................................................................ 6-19 6.5.2 Items to adjust ............................................................................................................................... 6-20 6.6 Display Function ............................................................................................................................... 6-21 6.6.1 General .......................................................................................................................................... 6-21

................................................................................................................ 6.6.2 Configuration of display 6-21 ............................................................................................................................. 6.6.3 Factory settings 6-23

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1.4 Definition of terms

Density ( p ): Mass per unit volume.

Specific gravity ( r ) : Ratio of mass to mass of water of the same volume. Varies with temperature.

Oil feed rate: Volume per unit time of untreated liquid upstream the purifier expressed in terms of Llh or m31h.

Actual capacity: Purifier treating capacity based on SM Standard (eliminating sludge with 1.8 of specific gravity and 2 p m of diameter or more). (See "Feed rate" above.)

Feed liquid: Untreated oil to feed to purifier

Light liquid: Oil treated by purifier or purified oil.

Heavy liquid: Separated moisture and heavy components in oil or simply "water".

Sludge: Solids accumulated in bowl in narrow sense. Mixture of solids, water and oil discharged from bowl in wide sense.

Interface: Boundary surface between heavy and light liquids in bowl.

Purifier operation (purifying operation): Operation of separating into 3 phases or liquid, liquid and solid or, here, into oil, water and solids. (See "Purifier operation".)

Clarifier operation (clarifying operation): Operation of separating into 2 phases or liquid and solid or, here, into oil and solids. (See "Clarifier operation".)

Parallel operation: Operation with oil fed proportionally to several purifiers arranged in parallel. (See "Parallel operation".)

Series operation: Operation by several purifiers arranged in series (See "Series operation".)

Total discharge type Purifier designed to totally discharge all contained in the bowl.

Partial discharge type Purifier designed to partially discharge water and solids only in the bowl. This type has the total discharge function as well.

Abbreviations and units

L: Liter: Unit of volume. H: Hour(s): Unit of time. min-': Number of revolutions per minute. Hz: Number of frequency.

(cycles per second) : Unit of diameter in mm.

mm21s: unit of kinetic viscosity of oil. (= cSt) ISO: Standards established by International

Standardization Organization. VG: Indication of viscosity of lubricating oil in

accordance with ISO.

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2 Configuration of oil purifying system

Fig. 2-1 shows a typical purifying system configuration with the automatic GSH-1 (HIDENS)

specification of SELFJECTOR.

Electric Power source

r-----1 8 MKK SUPPLY L..-..A Note) Automatic GBC-1 and GBC-2

4 specifications are not provided with Water ,-, Detector (WD) and solenoid valve (SV9). Also, Discharge Detector (DD) is optional for these specifications.

Fig. 2-1

A SELFJECTOR Instruction Manual 2- 1 Operation ~ a n u a l l

1

2

3

4

5

6

7

8

9

10

11

12

13

SELFJECTOR

Gear pump

Solenoid valves unit for operating water

3-way cylinder valve (Feed valve)

3-way solenoid valve

Multi-Monitor

Leakage Monitor function (LM)

Discharge detector function (DD)

Water detector function (WD)

Oil heater

Oil strainer

Flow control valve

Pressure control valve (Needle valve)

A

B

C

D

E

F

G

@ @ @

Dirty oil inlet

Purified oil outlet

Compressed air inlet

Sludge & Water outlet

Water inlet

Drain

Circulation

Pressure gauge

Compound gauge

Motor

Page 7: Mitsubishi Purifier Manual

2.1 Gear pump The gear pump feeds feed oil to the purifier. Mounted on the horizontal shaft of the purifier via a safety joint, it is driven by the motor for the purifier. The gear pump can be selected to match a particular treating capacity. Instead of the gear pump, a separate pump may be used.

2.2 Oil heater Installed midway between the gear pump and oil purifier, the oil heater warms feed oil fed by the gear pump to an optimum treating temperature. The heater is classified into steam and electrical types. The steam type is provided with a temperature control valve and the electrical type with a thermostat to control the temperature. Before oil is treated by the oil purifier, it must be heated up to a certain temperature according to the particular oil viscosity and nature.

2.3 3-way cylinder valve The 3-way cylinder valve is a pneumatically operated selector valve and feeds feed oil to the purifier. When starting, stopped or discharging sludge, it is changed to return the oil via the bypass piping to the

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2.4.3 Water Detector Function (WD) The Water Detector is available in a pressure type and an electrostatic capacity type (option). The pressure type is designed to monitor the level of water accumulated in the bowl by means of a pressure sensor provided in the circulation line that returns some of purified oil to the feed liquid inlet. This way of water detection is called "G-HIDENS system" to differentiate from the detection system with the electrostatic capacity type Water Detector. The electrostatic capacity type, which is installed in the purified oil piping of the purifier, is designed to work on the principle that capacitance (dielectric constant) rises as oil increases in water content. When the water content of purified oil exceeds an alarm trigger level, the Water Detector issues an output signal to the automatic control panel for sludge discharge via the Multi-Monitor.

2.5 Starter The purifier is started by the starter. It is stopped by a signal from the control panel when an automatic stop alarm has been generated.

2.6 Control panel The control panel automatically controls the cycle of purifying the feed liquid by purifier and discharging the sludge. Upon receipt of output signals from various detectors via the Multi-Monitor, the control panel stops the oil feed, then the purifier after sludge is discharged.

2.7 Alarm panel The alarm panel changes over the 3-way cylinder valve through switching. When a Multi-Monitor output signal is received during running, the feeding is stopped.

2.8 Kinds (specifications) of oil purifying system The purifying system including the oil purifier comes in 5 different types including automatic and manual types.

Automatic types

1 GBC-1

(Total discharge type I Automatic control panel with CPU controller panel I 1 unit)

GBC-2

(Total discharge type I Automatic control panel with CPU controller panel 12 units)

GSH-1

(HIDENS SYSTEM configuration I Total and Partial discharge I Automatic control panel with PLC)

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Manual types

GAP-1 1

Manual

Manual discharge 1 Alarm panel provided

Manual discharge I Alarm panel not provided

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2.9 Component devices of different versions Component devices of automatic and manual types are as follows.

NOTE : Options are marked(A)

2.10 Feature of Automatic types F

The feature in which the different automatic types shown below.

GAP-1 1

1:0

0

0

0

0

SJ : Control panel

SELFJECTOR are given different suffix of machine each Automatic type. However the machine

Manual

1:0

0

GBC-1

1: l

0

0

0

0

A

Control panel

structure are same.

PLC

CPU

G BC-2

2: l

0

0

0

0

A

GSH-1

1 : l

0

0

0

0

0

0

Alarm panel

Automatic Types

GBC-1

discharge and partial discharge. The sludge discharge process makes a total discharge, whereas water is discharged in a partial discharge. In some cases, water is discharged in a total discharge with sludge, depending on water detection time. For detailed information on the HIDENS system operation, refer to Section 3.6.2 Clarifier operation and the separate "Operation Manual 3C".

Operating water

solenoid valve unit

GBC-2

GSH-1

-

A SELFJECTOR Instruction Manual

Automatic

Manual

Feature

Provided with a 3-way solenoid valve unit for total discharge.

Operation ~ a n u a l l

Feed valve 3-way solenoid valve

Leakage Monitor (LM)

Discharge Detector (DD)

Water Detector (WD)

Suffix of Machine type

G

The sludge discharge process makes a total discharge.

Provided with a 4-way solenoid valve unit for both total GH

Page 10: Mitsubishi Purifier Manual

3 STRUCTURE of SELFJECTOR 3.1 General Fig. 3-1 outlines the structure of SELFJECTOR. The power is transmitted from the motor through the

- -

friction clutch to the horizontal shaft and is further Vertical - -

-- - -- -- - - -

increased in speed and transmitted to the vertical shaft shaft - - - - - -- - - -- - - -- -- -- --

through the spiral gear mounted on the horizontal shaft Frame -

-- - - -- -- - - -- - - - --

and pinion on the vertical shaft. - -- - - -- - - - - - -- - -- - -- -

The vertical shaft is supported by upper and lower Motor - -- -- - - - -- -- - - - -- --- -- - - -- bearings. --- -- - -- - - - - - -- -- -- --- -- - --

The bowl mounted on the top of the vertical shaft rotates at - - -- - - - - - -- - - - - - - - - - - -- -

the speed of the vertical shaft. - -- - -- -- - - -- -- - - - -- - -

- -

To supply feed liquid to SELFJECTOR, the suction pump - - -- - -- -- ---- -- - - - -- --- - - --

(gear pump) is connected to the horizontal shaft through - - - - - -- - - -- ---- - - - - - . . - - -

the safety joint. To deliver light liquid, the centripetal clutch -- - - - - . - - - --- -- - -- -- - -.

pump (impeller) is built in the top of bowl. - - - -- - - - - -- -- - -- - -

In addition, heavy liquid is forced out by a similar - -- - - --- Fig. 3-1 - --- --- -- -- - - - - - --

centripetal pump. - - - - - - - - - - - - -- -- - - -- --- - -- - - -- - - - - -- - -- - -- - - -- - - - -- - - - -- - - -- -- - -- - - - - -- - - - - -- - --- - --- -- -- --

3.2 Drive unit - -- -- -- -- - - - - -- - -- - - - --

3.2.1 Vertical shaft section - - - -- -- . - -- - - - -- e -

Vertical shaft - -- -- --

The revolution speed of the horizontal shaft is increased by - - - - -- - - - - - - -- - - -- - - - --

Upper bearing parts -- - --

the vertical shaft pinion gear and the vertical shaft rotates the - -- -- .- -- -- -

c--, -- -- - - --- --- - 1 --- -- - - - -- - -

bowl mounted on its top. The vertical shaft and bowl are --

Flat spring -- -- -- - -- - - -- - -- - - - - --

supported by upper springs and leaf springs radially - -- - -- - - - - -

Upper spring - - - -- -

incorporated at 6 points on the upper bearing section and mFf~p& - - - -- - - - - - - - -- - - -

lower springs in the lower bearing section so that they can -

( , ' " pj" - - - - - - g, )1, ,lM " ""I' - - - - - - - -

stably rotate. - - -- -- - - - -

-1 -

I -- -- - - - -- - - - - -

I -- - - - - - - - -- -- -- - - - - - I - - - - - - - - - -

- - - - -

- - Pinion gear - - - - - - - - - - - - -- - - -

L + - - - - - - - - - - - - - --

-7 - -- - - - - - - - - - - -- - -

w+ - - -- - - - - - - - - - -

Lower bearlng parts - - - - - - - - - - - - - - - - - - - - - -- - - - - -- -

g - - - - - - - - - - - -- - - - - - - - - - - -- - - -

4 2 - -- - - - - - - - - - - - -- - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - Lower spring - - - - - - - - - - - - - - - - - - - - -- -

Fig. 3-2 - - - - - - - - - - - - -- - - -- - -- - -- -- -- -- -- - -- -- - -- -- P - - - - - - - -- - - - - - - - - - - - - - - - - - -- - - - - - --- - -- - - - - - - = - = - = - - - - - - = - - - - = - - - - - - - - - - - - - - - -

A SELFJECTOR Instruction Manual 3- 1 Operation ~ a n u a l l

Page 11: Mitsubishi Purifier Manual

3.2.2 Horizontal shaft section Between the motor and horizontal shaft, the

Spiral gear

friction clutch is provided. Friction clutch

The horizontal shaft is supported by 2 ball bearings built in the bearing housing (3) and bearing housing (4). Between them, the spiral gear is mounted. The bearing housings (3) and (4) are provided with oil seals to avoid gear oil leakage. The horizontal shaft is directly coupled with the gear pump by the safety joint. Bearing housing (3)

Bearing housing (4) I

Fig. 3-3

3.2.3 Brake

By springs, the brake linings are pressed against the outer surface Brake lining

of friction pulley to perform braking. ,&-

Use the brake only when quick stop is absolutely required in , I / Fr~ction pulley r.

emergency, for repair or checkup. For normal stoppage and not in ; $ emergency, refrain from braking and allow the rotation to stop

, uc rizontal shaft

coasting. OFF @;

14

3.2.4 Friction clutch Fig. 3-4

A friction clutch is used for gentle starting and acceleration, thereby preventing the motor from being overloaded. Friction ?ley

The motor shaft has a friction boss provided with a friction clutch and /&- / - the horizontal shaft has a friction pulley. After starting, the motor Friction boss 1 -r

instantly turns at critical speed, the friction clutch lining is pressed b-;( I--),, :\ - against the internal surface of the friction pulley via centrifugal force ' I

and the power is transmitted to the friction pulley (horizontal shaft side) 2 X

.*\ y -9 1 ; vrd,

as the friction pulley and lining slip with each other. Normally, the bowl of small-size SELF.IECTOR (SJlOG - SJ30G) reaches its rated speed of rotation in less than 5 minutes, and middle-size SELFJECTOR (SJ50G - SJ70G) and large-size Frictionclutch SELFJECTOR in less than 10 minutes.

Fig. 3-5

A SELFJECTOR Instruction Manual 3-2 Operation ~ a n u a l l

Page 12: Mitsubishi Purifier Manual

3.3 Bowl 3.3.1 Structure of bowl The bowl vessel mainly consists of body, hood and nut. The bowl incorporates separation chamber composed of disc (1) and top disc and distributor, which distributes feed liquid from the bowl inlet to the separation chamber uniformly. There is a main cylinder, which slides vertically by water pressure to discharge sludge separated and accumulated on the inner wall of bowl during operation. At 2 points on the outer periphery of bowl, there are pilot valve assemblies for controlling the main cylinder slide. When feed liquid introduced through the feed liquid inlet through the distributor to the separation chamber passes through the gap between discs (A), solids and water are separated and purified oil is continually delivered outside by the centripetal pump (light liquid impeller) located on the top of bowl. Separated water is continuously discharged outside through the heavy liquid impeller.

Gravity disc For purifier operation, the interface for separating light liquid and heavy liquid in the bowl must be held to within a certain range. On SELFJECTOR, gravity discs with different inner diameters are used according to the gravity of oil to be treated, thereby changing the interface position. Select an optimum gravity disc according to "Gravity disc selecting procedure" in Operation manual 2. % : For the HIDENS specification, being for clarifier operation, requires no change of gravity discs.

Dirty oil inlet ' * Punfied oil outlet Separated water outlet

_-, Heavy liquid chamber Distributor

Light liquid chamber

Bowl hood

Bowl nut

Bowl body

-D Sludge

Main cylinder

Pilot valve Assembly - -

---A- Water supplying device

Fig. 3-6

A SELFJECTOR Instruction Manual 3-3 Operation ~ a n u a l 1

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3.3.2 Discharge mechanism

Total discharge is as follows.

Main cylinder Main seal ring

\ i

Water pressure chamber for closing bowl

Fig. 3-7

for operatlng bowl ilr

Operating water for operating bowl

Fig. 3-8

i Purifying operation process A centrifugal force acting on the pilot valve seals the valve seat and the water pressure chamber for closing bowl is filled with operating water. 'The operating water pressure pushes up the main cylinder to seal the main seal ring for purifying operation. Operating water for closing bowl is intermittently introduced into the bowl closing water pressure chamber for a given period of time during purifier operation. In the water pressure chamber, the centrifugally generated pressure of water that turns with the bowl is balanced with the supplied water pressure told the water surface at a certain level.

ii Opening bowl process Operating water for opening bowl is fed for a certain time to the water pressure chamber for opening bowl. It partly goes out through the drain nozzle. More operating water for opening bowl is supplied and fills up the water pressure chamber for opening bowl. As its pressure slides the pilot valve toward the shaft center, the seal of valve seat breaks and operating water for closing bowl flows out from the bowl.

A SELFJECTOR Instruction Manual 3-4 Operation ~ a n u a l l

Page 14: Mitsubishi Purifier Manual

iii Sludge discharging process When operating water for closing bowl goes out, there is no more force of pushing up the main cylinder that, then, is pushed down by the pressure in the bowl. The seal of main seal ring breaks and sludge is instantly discharged outside the bowl.

'i Operating water for operating bowl

Fig. 3-9

iv Closing bowl process After the sludge discharge, operating water for closing bowl is fed to the water pressure chamber for closing bowl and, when it is filled up, the main cylinder is pushed up to seal the main seal ring.

Operating water for J

closing bowl

Fig. 3-10

NOTE In the HIDENS system specification, partial discharge is effected to let out water accumulated in the bowl, which is basically the same as the total discharge mode, except that the main cylinder opening duration is shorter.

A SELFJECTOR Instruction Manual 3-5 Operation ~ a n u a l l

Page 15: Mitsubishi Purifier Manual

6

3.4 Water supplying device The water supplying device is provided under the bowl to supply operating water for controlling the discharge of sludge from the bowl to each water pressure chamber (for opening bowl, for closing bowl).

Operating water for opening bowl is fed from section An in Fig. 3-1 1 and enters the water pressure chamber for opening bowl. Operating water for closing bowl is fed from section B and enters the water pressure chamber for closing bowl. Operating water for closing bowl is intermittently fed for a certain time during the purifying running. Because operating water in the water pressure chamber for closing bowl rotates together with the bowl, the pressure generated its centrifugal force and the pressure of operating water for closing bowl balance and the water level stabilizes at a certain position.

NOTE Operating water for closing bowl : Water for pushing up the main cylinder and closing the sludge outlet. Operating water for opening bowl : Water for lowering the main cylinder and discharging sludge.

Water pressure

chamber for closing bowl

t Water supplying device

Fig. 3-11

Water pressure

I chamber for opening bowl

/ j I 8 _,'

, '

A SELFJECTOR Instruction Manual 3-6 Operation ~ a n u a l l

Page 16: Mitsubishi Purifier Manual

3.5 Centripetal pump Two spiral impellers are built in the bowl top to force out light and heavy liquids from the machine. The impeller consists of a disc of a certain thickness provided in its interior with spiral grooves. It is dipped in oil that rotates together with the bowl and oil is let out according to the grooves resorting to its own rotation.

Fig. 3-12

A SELFJECTOR Instruction Manual 3-7 Operation ~ a n u a l l

Page 17: Mitsubishi Purifier Manual

3.6 Purifier operation and clarifier operation 3.6.1 Purifier operation The purifier operation refers to a separation into 3 phases or oil, water and sludge. It is most commonly employed.

1. The high limit of specific gravity of oil to treat is 0.991 (at 15°C) practically.

2. For normal operation, the interface must be set to within a specified range by changing the diameter of gravity disc.

3. Before introducing oil, water sealing is required so that oil fill not flow out through the heavy liquid outlet.

4. The purifier has a heavy liquid outlet for continually discharging separated water.

Fig. 3-13 is the cross sectional view of the bowl of SELFJECTOR (SJ-G series) under purifier operation. Feed liquid is introduced from the feed liquid inlet into the separation zone by way of the distributor. While separated heavy liquid (water) and solids go to the outer periphery of the bowl, light liquid moves inside through between the discs and is forced out by the light liquid impeller. Heavy liquid passes outside the top disc and flows over the gravity disc to be discharged by the heavy liquid impeller.

S e a l i n g water in le t

Feed I i q u i d ( d i r t y o i l ) in le t L i g h t I i q u i d ( p u r i f i e d o i 1 ) out let

I i q u i d (water) outlet

Heavy l i qu i d c h h e r

L i g h t l i q u i d c h h e r

- ischarge hole

Fig. 3-13

A SELFJECTOR Instruction Manual 3-8 Operation ~ a n u a l l

Page 18: Mitsubishi Purifier Manual

3.6.2 Clarifier operation The clarifier operation refers to a separation into 2 phases or oil and (water + sludge).

1. If the specific gravity of oil to be treated exceeds 0.991 (at 15°C) , clarifier operation with the G-

HIDENS series machine is recommended. 2. The G-HIDENS series machines ensure stable clarifier operation for fuel oils up to 1 .O1 (at 15°C) in

gravity. 3. Irrespective of gravity, the G-HIDENS series machines accept oils for treatment without adjustment

with the gravity disc. 4. The G-HIDENS series machines require no water sealing. 5. In the setup for clarifier operation, there is no heavy liquid outlet for letting separated water out of

the machine so that separated water cannot be continuously discharged.

The G-HIDENS system is designed to detect the accumulation of separated water at a predetermined level by means of a presser sensor installed in the circulation line and discharge it out of the bowl. It combines the feature of the clarifier which is leakage-free operation and that of the purifier which is the capability of water separation.

Fig. 3-14 shows the cross sectional view of the bowl of a typical G-HIDENS system SELFJECTOR (SJ-GH series) in clarifier operation. Feed liquid is introduced from the feed liquid inlet into the separation zone by way of the distributor. While separated heavy liquid (water) and solids go to the outer periphery in the bowl, light liquid moves inside through between the discs and is discharged by means of the light liquid impeller. Some of light liquid passes outside the top disc and is returned to the feed liquid port via circulation line by means of the heavy liquid impeller. To make this take place, pressure (0.1 MPa) is built in the circulation line through back pressure valve. Upon arrival of accumulated water in the bowl at the top disc outside level, the circulation of light liquid is stopped with an ensuing drop in circulation line pressure. This pressure drop (the sign of maximum water accumulation in the bowl) is detected by a pressure sensor, a sensor output is transmitted to the Multi-Monitor and accumulated water is released from the bowl as a result. While water is normally discharged in the partial discharge mode, total discharge with sludge can take place, depending on the time spent for water detection.

I Back pressure valve 11 Feed l i q u ~ d ( d ~ r t y 011) In le t

Light I ~ q u ~ d ( p u r ~ f l e d 011) outlet

- Heavy l ~ q u ~ d c h d e r

Gravity disc '

D~strlbutor

Fig. 3-14

Discharge hole

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Page 19: Mitsubishi Purifier Manual

3.7 Parallel operation and series operation

So long as the feed rate is within the actual capacity, 1 stage of purification suffices basically. When, however, treating oil for which catalyst mixture, excessive sludge, etc. are expected, raising the purifying.effect is required utilizing spare machine(s).

In this case, the purifiers are subjected to either: Parallel (parallel purifying) operation Series (series purifying) operation.

When operating several machines as shown above, the parallel operation is preferable to, for its better separating effect than, the series operation.

Page 20: Mitsubishi Purifier Manual

3.7.1 Parallel operation

For parallel operation, 2 or more SELFJECTORs are arranged in parallel. Fig. 3-15 exemplifies piping for parallel operation.

NOTE In the case of parallel operation with two units of SELFJECTOR, the two machines share oil feed to the whole system half and half between them. Select the sizes of piping, with flow velocity and pipe resistance taken into account, so that pipes one size larger in bore diameter are used upstream of the inlet line branching point and downstream of the return and outlet line meeting point, for example.

A T- ) Purified oil outlet

Feed liquid tank + t r-., +

Fig. 3-15

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--

3.7.2 Series operation

In case of a series operation by 2 SELFJECTORs, detach the gear pump furnished with the latter stage SELFJECTOR from the safety joint because it is not used. Do not use the oil heater for the latter stage.

For a series operation, the former stage is for purifier operation and the latter stage is for clarifier operation usually.

In case of a series operation by 2 machines, a general practice is purifier operation for the former

stage and clarifier operation for the latter stage. The feed rate must be the same as for a single operation.

Fig. 3-16 exemplifies piping for a series operation.

NOTE In the series operation, when the first-stage SELFJECTOR enters into the discharge process, oil feed to the second-stage SELFJECTOR does not take place (as is the case with stop by an alarm signal) in the meantime. The second-stage SELFJECTOR, therefore, requires an interlock system to prevent the Multi-Monitor from issuing a false Leak Monitor output signal. (For general description and working principle of the Leak Monitor, refer to Section 6.2.)

1 Feed liquid tank 4- Purified oil outlet

Fig. 3-16

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4 Motor, starter and control panel

4.1 Motor The following concerns specifications of class B insulated three-phase squirrel cage type induction motor. If the motor output requirement is less than 3.7 kW, the specifications will be those of class E insulated three-phase squirrel cage type induction motor.

4.1.1 Precautions in handling

Operation in explosive atmosphere is not allowed. Otherwise, injury, fire, etc. might be caused. Turn off power before operation. Otherwise, electric shock, etc. might

occur. Connect the power cable according to the connection diagram. Do not force to bend or pull the power cable or leads. Do not introduce fingers or objects into openings of the motor. While running, do not touch the motor which may be considerably hot.

4.1.2 Motor characteristics 4.1.2.1 Starting characteristics The motor power is transmitted via the friction clutch to the horizontal shaft so as to mitigate the starting load. When the motor is started, it immediately reaches near the rated speed, gradually accelerating the bowl via friction clutch. During this while, the rated motor power is exceeded and, therefore, a motor enduring an overload is used as given in Table 4 -1.

Table 4 -1

I Overload I Duration I 25% overload

75%

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4.1.2.2 Starting characteristics curves

Fig. 4-1 exemplifies starting characteristics curves.

(mi n -1) (A)

8000---40

7000---35

Fig. 4-1

Character i s t i c curve a t start-up

S J ~ O G (;. 5KW 4P 440V $ 0 ~ ~ 1

20 Time (niin) -

I

Revolution speed o f bowl

I

A SELFJECTOR Instruction Manual 4-2 Operation ~ a n u a l l

'v4

I I I

Page 24: Mitsubishi Purifier Manual

4.1.2.3 Output and speed of revolution If the speed of revolution drops, the treating capacity of SELFJECTOR lowers. If the speed is higher than rated, the safety is compromised. Table 4 -2 gives motor output and speed for different models.

Table 4 -2

NOTE1 : G type is standard machine, GH type is G-HIDENS machine.

Designation *1

SJ1OG I GH

SJ20G I GH

SJ30G I GH

SJSOG I GH

SJ6OG I GH

SJ70G I GH

SJ100G I GH

SJ120G I GH

SJ150G I GH

4.1.2.4 Other specifications of motor Continuous rating Insulation: Class E(3.7kW), Class B(5.5kW over) Ambient the: 50°C max.

Allowable voltage fluctuation: 10% of rated voltage

4.1.3 Motor structure View of Load Side

4.1.3.1 Type Counter Load Side Load Side Direct of Rotation

Flange-mounted horizontal shaft totally enclosed fan-cooled 1 1 -

Rated output (kW)

type (indoor type) Turning direction: Counterclockwise as viewed of load (CCW)

4.1.3.2 Structure of wire lead-in

Poles

4

G

3.7

5.5

7.5

11

15

18.5

When used on ships, the structure must conform to JIS F8801 "Marine watertight cable glands (for box)" (water-proof glands). Fig. 4-2

GH

5.5

7.5

11

18.5

4.1.4 Rated current intensity Table 4 -3 gives rated current intensities of standard motors in case of 60Hz.

Rotation speed (min-')

50Hz

Approx.

1500

A SELF.IECTOR Instruction Manual 4-3 Operation ~ a n u a l l

60Hz

Approx.

1800

Table 4 -3 (Unit : A)

7.5kW

12.7 Voltage

3.7kW

6.48

Rating

440V

1 lkW

18.5

5.5kW

9.25

15kW

25.0

18.5kW

31 .O

Page 25: Mitsubishi Purifier Manual

4.2 Starter On the starter panel, there are "push-button" for starting the purifier motor, "indicator lamp" and "ammeter". It incorporates "overload relay (thermal relay)".

4.2.1 Precautions in handling

Do not put combustible things nearby. Otherwise, a fire might occur. Before proceeding to wiring, make sure power is turned off. Only a specialized electrician is allowed to conduct wiring. Using grounding terminals in the starter panel and out, ground the starter to the hull to make it electrically effective. (Be sure to ground.) Make sure the rated voltage and frequency of the starter panel match the source voltage and frequency.

4.2.2 Starter structure Made of steel sheet, drip-proof, wall-mounted type External wire introduction: Coaming

4.2.3 Overload relay (thermal relay) Resetting : Manual Operation characteristics : Time limit characteristics Current setting : See Table 4 -3

- A. - _I7 ,--IL.. ~ ~

I r 1 S N P L----

Fig. 4-3

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4.2.4 Connection of Starter

Reference to Fig. 4-4 (Internal connection in the SELFJACTOR 's starter at AC440V.)

MCB 88

M C E E) :Plug connection

0: Terminal for internal connection Terminal for external connection

I ' I - ~ o ~ u t o r n a t i c Control Panel or ~ l e r m ' Panel

(In case of manual operation. connection is not required. )

To Customer' a Control Console

Fig. 4-4

NOTE: 1) Terminal No. PR,PC and PA are connected to control panel.

2) Terminal No. M I l,M12,Ml,M5,M6 and MI0 are connected to control panel or alarm

panel. (In case of manual type, Not need connection.)

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4.3 Control panel The control panel repeatedly and automatically performs SELFJECTOR operating steps shown in Table 4 -4. It also receives alarm signals from detectors and, after due processing according to particular alarms, stops the purifier. The control panel comes in different types given in Table 4 -4.

Close bowl I- 1 Sealingwater 1

Alarm 1 4

1 Replacement water 1 I

Discharge sludge

To stop the purifier Purifying operation

Fig. 4-5

,

Table 4 -4

4.3.1 Precautions in handling

GBC-1

GBC-2

GSH-1A

Do not put combustible things nearby. Otherwise, a fire might occur. Before proceeding to wiring, make sure power is turned off. Only a specialized electrician is allowed to conduct wiring. Connect the ground terminal of the control panel to an electrically effective

point on the hull. (Perform grounding.) Make sure the rated voltage and frequency of the control panel match the

source voltage and frequency.

A SELFJECTOR Instruction Manual 4-6 Operation ~ a n u a l l

Control type

CPU

PLC

(programmable

logic controller)

For 1 purifier

For 2 purifiers

For 1 purifier

HIDENS configuration

(total and partial

discharge)

Page 28: Mitsubishi Purifier Manual

4.3.2 Control panel (model GBC-1)

The front panel configuration and the functions of the control elements of the automatic panel are

described below.

\I m

6

SOURCE

a

Fig. 4-6

(1) "CONT. SOURCE LAMP" The green pilot lamp (LED) lights when the power is supplied to the automatic control panel.

(2) "POWER SWITCH" The power switch for the automatic control panel

(3) "AUTO. START" The automatic running start switch. The green pilot lamp (LED) stays ON during automatic running.

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(4) "AUTO. STOP" When this button is pressed during automatic running, the SELFJECTOR automatically shuts down after completion of the process to discharge sludge.

(5) "ALARM" When any alarm occurs during operation, the red pilot lamp (LED) comes on. The type of alarm that has occurred can be identified by LEDs on the control unit in the panel.

(6) "ALARM RESET" When an alarm occurs, the pilot lamp is lighted and kept ON. To put out the pilot lamp, press this button.

(7) "DISCHG. TEST" When this button is pressed during automatic running, sludge is forced out.

(8) "EMERG. STOP" When this button is pressed, all the valves close and the SELF.IECTOR shuts down immediately. No sludge discharge takes place.

(9) "MM FUNC." This switch is used for ONIOFF control of feed signal output from the control panel to the Multi-Monitor. When the "MM ON" green pilot lamp (LED) is off, feeding signal is not outputted from the control panel to the Multi-Monitor even if the SELFJECTOR is on feeding. Whenever it pushes this button, the "MM ON" green pilot lamp (LED) repeats lighting and putting out lights.

(1 0) "GRAPHIC PANEL" On the graphic panel, the running status of SELFJECTOR, operational status of operating water solenoid valves (SV1 - 3) and 3-way solenoid valve (SV4) and alarm signals can be identified through corresponding LEDs.

SV1-4 : Green

Alarm (LEAK, NO-DIS) : Red

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4.3.3 Control panel (model GBC-2)

The front panel configuration and the functions of the control elements of the automatic panel are

described below.

Ooeration Panel for No.1 SELF.IECTOR Ooeration Panel for No.2 SELFJECTOR

No.1 SELFJECTOR No.2 SELFJECTOR Monitor indication LED

Fig. 4-7

(1) "CONT. SOURCE LAMP" The green pilot lamp (LED) lights when the power is supplied to the automatic control panel.

(2) "POWER SWITCH" The power switch for the automatic control panel

(3) "AUTO. START" The automatic running start switch. The green pilot lamp (LED) stays ON during automatic running.

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(4) "AUTO. STOP" When this button is pressed during automatic running, the SELFJECTOR automatically shuts down after completion of the process to discharge sludge.

(5) "ALARM" When any alarm occurs during operation, the red pilot lamp (LED) comes on. The type of alarm that has occurred can be identified by LEDs on the control unit in the panel.

(6) "ALARM RESET" When an alarm occurs, the pilot lamp is lighted and kept ON. To put out the pilot lamp, press this button. Pressing this button selects monitor between No.1 SELFJECTOR and No.2 SELFJECTOR displayed on the graphic panel.

(7) "DISCHG. TEST" When this button is pressed during automatic running, sludge is forced out.

(8) "EMERG. STOP" When this button is pressed, all the valves close and the SELFJECTOR shuts down immediately.

(9) "MM FUNC." This switch is used for ONIOFF control of feed signal output from the control panel to the Multi-Monitor. When the "MM ON" green pilot lamp (LED) is off, feeding signal is not outputted from the control panel to the Multi-Monitor even if the SELFJECTOR is on feeding. Whenever it pushes this button, the "MM ON" green pilot lamp (LED) repeats lighting and putting out lights.

(1 0) "GRAPHIC PANEL" On the graphic panel, the running status of SELFJECTOR, operational status of operating water solenoid valves (SV1 - 3) and 3-way solenoid valve (SV4) and alarm signals can be identified through corresponding LEDs.

SELFJECTOR monitor select : Green

SV1-4 : Green

Alarm (LEAK, NO-DIS) : Red

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4.3.4 Control panel (model GSH-1)

The front panel configuration and functions of the automatic control panel are shown below.

(1) "CONT. SOURCE LAMP" Lights when power is supplied to the automatic control panel

(2) "POWER SWITCH" Turns onloff the power for the automatic control panel.

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(3) "AUTO. RUNNING" The pushbutton is a switch for starting automatic operation. The built-in pilot lamp will stay ON during automatic operation.

(4) "AUTO. STOP" When this pushbutton is pressed during automatic operation, the SELFJECTOR will stop automatically after discharging sludge.

(5) "ALARM RESET" When any alarm occurs duriqg operation, the built-in pilot lamp will come on. The type of alarm that has occurred can be known from the data display on the front panel. When the pushbutton is pressed, the sustained alarm will be reset.

(6) "DISCHG. TEST" When this pushbutton is pressed during automatic operation, the SELFJECTOR is forced to discharge sludge.

(7) "EMERG. STOP" When this pushbutton is pressed, all the valves will immediately close, and the SELFclECTOR will stop.

(8) "MM FUNCTION SWITCH" This selector switch is used for ONIOFF control of feed signal output from the control panel to the Multi-Monitor. When the "MM FUNCTION SWITCH" is off position, feeding signal is not outputted from the control panel to the Multi-Monitor even if the SELFJECTOR is on feeding.

(9) "OPERATION DISPLAY PAIVEL" The operation display panel displays input and output data, ONIOFF status of input and output signals and kinds of alarm signals. Also, it is possible to enter and alter various set values on the graphic panel.

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4.3.5 Alarm panel (GAP-1 1)

- - -- -- - - - - 3

--- -- 1 5

r- -

- - --

4

2 6

FEEDING SOUR

8

7

M M # K SH XqY? 1J-tz.yt-

MM FUNCTION ALARM SWITCH RESET

-- -- - -

Fig. 4-9

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(1) "SOURCE LAMP" Lights when the alarm panel is turned on.

(2) "POWER SWITCH" Power switch for the alarm panel.

(3) "FEEDING LAMP" Pressing the "FEEDING" button while running lights the indicator lamp.

(4) "FEEDING" Pressing the button while running changes over the 3-way cylinder valve to feed liquid to SELFJECTOR.

(5) "OIL LEAKAGE LAMP" When the Multi-Monitor has its Leakage Monitor actuated by a leakage detected during running, the indicator lamp is lit.

(6) "STOP FEEDING" Pressing the button while running changes over the 3-way cylinder valve to allow feed liquid to bypass SELF,IECTOR.

(7) "ALARM RESET" When the Multi-Monitor has its Leakage Monitor actuated during running, the alarm circuit is caused to hold with the OIL LEAKAGE lamp lit.

(8) "MM FUNCTION SWITCH"

This selector switch is used for ONIOFF control of feed signal output from the alarm panel to the

Multi-Monitor. When the "MM FUNCTION SWITCH" is off position, feeding signal is not outputted from the alarm panel to the Multi-Monitor even if the SELFJECTOR is on feeding.

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4.4 Control Unit (GBC-1, GBC-2) GBC-1 and GBC-2 incorporate Control Unit which performs a sequence control. Logics required for purifier operation are factory inputted but some timers must be set to match your particular:

a SELFJECTOR designation

a Feed liquid type

For timer setting, refer to "Setting the control panel timers" in Operation manual 2.

Here, the description outline of Control Unit and Terminal Unit.

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4.4.1 Control Unit

The control unit is a controller with a built-in logic for automatic operation of the SELFJECTOR. The

control unit also contains the timer function.

1 Power Term~nsl

GBC-1

Fig. 4-10

T~mer indication1 ' Semng Pans

Alarm lndlcaang -LED=

1 Yl

I Connector T a t m ~ n a l M 2 Connector

Power

Term~nal

Fig. 4-11

. Alarm

Indicating

LEDs

Optional

=- Function

Selector

Switches

\ Timer

Indication1

Setting Parts

A SELFJECTOR Instruction Manual 4-1 6 Operation ~ a n u a l l

Name Symbol --

Timer Indication / LEDs and switchs which indicate the elapsed or set

Setting Parts time of the timer.

Alarm Indication ALARM When an alarm occurs in the SELFJECTORs, the

LEDs

Optional Function

Selector Switches

Power Terminal

Connector

Terminal

NO. 1 OPTION

(No.2 OPTION)

CN1

CH4(CN5)

When the optional detector is to be used, set the

switch to ON to enable the optional function.

5V and 24V power supplies are connected.

Connected to the terminal unit.

Page 38: Mitsubishi Purifier Manual

4.4.2 Terminal Unit

The terminal unit inputs and outputs signals fromlto external devices. GBC-1 one unit provided, in case

of GBC-2. Two units, one for the No. 1 machine, and one for the No. 2 machine, are provided. The

terminal unit is connected to the control unit through a connector.

Power Fuse Aux i l i a r y Re lay Switch Connector l nput l nd i ca t i on

l o Ev?~ VS DO LT 7SJ

P LC1 B O ~ ~ O ~ O O O ~ O O L-----

SV4 VSR DlSP LT-B AL ' S V l FED MSSP HT-B AL-C7-W 1 " '

loooo,o 00000l0

Externa l L i ne Term i na l Output 1 nd i c a t ion

Fig. 4-12

I 1 pushbuttons are turned ON or when ON signals are issued from the corresponding 1

Name

Input lndication LEDs

Function

lndicate the input status of signals. They come on when the corresponding front panel

Output lndication LEDs

I I open, or output signals to the individual detectors to be issued. The auxiliary relays are of I

detectors.

Indicate the output status of signals. They come on when "ON" signals are output to the

Auxiliary Relays

When any of the auxiliary relays fails, it can be replaced independently. 1 the socket type. 1 I I

lamps on the front panel of the control unit, when "Open" signals are output to the solenoid

valves, and when command signals are output to the detectors, respectively.

Cause the lamps on the front panel of the control unit to illuminate, the solenoid valves to

Fuse I Blows when an over-current flows to open or close the solenoid valve. I 1 Power Terminal /The power supply for opening the solenoid valve and the power supplies for the individual ~

I SSW2) 1 and Make. 'I. Do not change the settings done at the time of shipment from the factory. I

Connector Terminal

I Upper side of switch: Break Contact Lower side of switch: Make Contact

detectors are connected

Connected to the control unit.

*1. For switchover of contacts Break and Make, the internal wiring in the control panel and emergency

switch contacts must also be changed. Therefore, you cannot change over contacts Break and

Make after shipment from the factory.

External Line Terminal Used to connect external lines.

Switches (SSWI, Used for switchover of starter stop output and alarm cancel signal output contacts Break

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Page 39: Mitsubishi Purifier Manual

5 Programmable logic controller (PLC) 5.1 Programmable Controller

The automatic GSH-1 configuration incorporates a programmable logic controller (PLC) for sequence control. The programmable controller contains the logic for automatic operation of the purifier. It is a flexible controller whose programs can be rewritten from an external tool. The programmable controller contains the functions for inputting and outputting signals fromlto the external devices, and the timer functions.

5.2 Programmable Controller Configuration The programmable controller consists of the following devices. (For details, refer to Section 5.3 .) The CPU board and expansion board are mounted in the automatic control panel, whereas the operation display panel is mounted on the front of the automatic control panel.

5.2.1 CPU Board 'The CPU board is a device which outputs and inputs signals to and from external devices. The following signals are connected to the CPU board.

[Input Signals] From Multi-Monitor

o Oil leakage signal (LM) o No-discharge signal (DD) o Water detection signal (WD)

From automatic control panel o ON signal of each pushbutton on front of control panel

[Output Signals] o Discharge signal, feeding signal, etc. to Multi-Monitor o OPENICLOSE signals to solenoid valves o ON signal to front panel pilot lamps o STOP signal to motor starter, alarm signal to console, etc.

5.2.2 Operation Display Panel The operation display panel is a device for changing the timer and counter settings of the programmable controller and indicating SELFJECTOR alarms. It is connected to the CPU board by a communications cable.

The timers and counters must be set to different values, depending on:

o Model number of SELFJECTOR, o Type of feed oil, o Operating water pressure and sealing water pressure.

It is therefore necessary that the settings are changed to match the operating condition.

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5.2.3 Expansion Board (Option for Indication of Water Content) The expansion board is a device for displaying the water content value measured by the electrostatic capacity type water detector (option) on the operation display panel. Normally the board is not mounted.

5.3 Functions of Individual Parts of Programmable Controller 5.3.1 CPU Board

Screw x 4 Connector terminal

Input display LED

8 . . . . . 8 8 . . . . wr- 0-NC.7 wL"w

Operating status LED Communications

Output display LED

. . 8 . 8 8 . . . . . . . . 8 . Connector terminal szgg sggs ~~722~ ,zzzz

(Normal position: CPU board

Expansion board (Option)

Fig. 5-1 Outside View of CPU Board

-- -

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5.3.2 Functions of Individual Parts of CPU Board

Name I Symbol I Description I I

11

11

Operating Status LED

~ ~ When a pushbutton on the front panel is set to ON or the^ ~ I 1 Multi-Monitor is caused to be ON signals. the associated LED1

PWR

RUN

and then to TERM again to light the LED.

Comes on when an error occurs in the CPU.

The LEDs indicate the input status of signals. Input Display LED

1 1 I liahts. I

Comes on when the power supply is turned on.

Stays ON during operation.

When it is OFF, temporarily set the mode switch (SWI) to RUN,

CPU

10-1 17

LED lights. I I

Output Display LED

Mode Switch

Tool Port

QO-Q17 The LEDs indicate the output status of signals.

When a pilot lamp on the front panel is lit, or a solenoid valve is

opened or closed, or a detector signal is output, the associated

I To rewrite the program, connect a dedicated tool to the port. I

SW1 Normally set to TERM.

When the switch is set to RUN, the timer settings cannot be

--

I CN3

Communications Port

I 1 C N ~ 1 The flat cable for output signals is connected to the terminal. I Connector Terminal 1 CN1 I The flat cable for input signals is connected to the terminal.

I

4

NOTE : To replace the CPU board, disconnect the connector and loosen the four screws to i

I I CN2

1

remove the board. i

Not used

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5.3.3 Functions of lnput and Output Display LEDs

For the input and output display LED Nos. and functions, refer to the following table.

Table 5-1 Detailed Functions of lnput and Output Display LEDs

Name

lnput Display LED

Output Display LED

I

LED No. 10

I I

Description Lights when Leakage signal is inputted from the Multi-Monitor.

Lights when No-discharge signal is inputted the Multi-Monitor.

Lights when Water Detection signal is inputted from the Multi-Monitor.

Stays ON during operation of motor of SELFJECTOR.

Lights when bowl opening water solenoid valve (SVI) is energized.

Lights when bowl closing water solenoid valve (SV2) is energized. Lights when sealing waterlreplacement water solenoid valve (SV3) is

energized.

Lights when feed valve solenoid valve (SV4) is energized.

Stays ON during automatic operation.

Q10 I Lights when alarm occurs.

Lights when stop signal outputs to starter. * I

Lights when alarm cancel signal outputs to starter. * I

Lights when collective alarm signal outputs to console. *2 Stays ON during feeding process (for Leakage Monitor Function (LM) of

the Multi-Monitor interlocking).

Stays ON during discharging process (for Discharge Detector Function

(DD) of the Multi-Monitor interlocking).

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NOTE *l....The starter refers to the separately installed motor starter of the SELFJECTOR. *2....The console refers to the remote control console.

5.4 Operation Display Panel

Data Display Section

Address Display Section (UpperILower Stage) \ I

1 \ ADDRESS DATA I MAIN 0 \ I

TIM 0 ' f CNT 0

(REG) TIM CNT

- +

I A Y 1 TUB l SH 1 KAKOK l KA I SHA. L ID. , \ CLR ENT

/ I

Mode Display Section Control Keys

Fig. 5-2 Outside View of Operation Display Panel

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5.4.1 Functions of Individual Sections of Operation Display Panel

A SELFJECTOR Instruction Manual 5-6 Operation ~ a n u a l l

Description

Displays the number of the timerslcounters or inputloutput

signals whose data is displayed in the data display section.

Displays the data (timer setting timeltime elapsed, etc.) for

the item indicated on the address display section or mode

display section.

Lights when an ordinary operation data (main screen) is

displayed. When the MAlN is ON, the upper stage of the

data display section indicates the elapsed time of the

discharge interval timer (C015). (Unit: Minutes)

The lower stage indicates a water content value. (Option)

Lights when the set timelelapsed time of the timer are

displayed or the setting is changed. When the TIM is ON,

the set time is displayed in the upper stage of the data

display section, and the elapsed time displayed in the lower

stage.

Lights when the set timelelapsed time of the timer (counter)

is displayed or the setting is changed. When the CNT is

ON, the set time is displayed in the upper stage of the data

display section.

The lower stage displays the elapsed time.

Lights when the internal memory data of the programmable

controller is displayed. (Normally not used)

Lights when inputloutput signals are monitored. When the

MON is ON, the ONIOFF status of the inpuUoutput signal is

displayed in the data display section.

Lights when an input signal is monitored.

Lights when an output signal is monitored.

Lights when an internal signal is monitored. (Normally not

used)

Lights when an alarm is displayed.

When the ALM is ON, the alarm number is displayed in the

data display section.

Name

Address Display Section

Data Display Section

Mode Display Section

Symbol

ADDRESS

DATA

MAIN

TIM

CNT

REG

MON

IN

OUT

M

ALM

Page 45: Mitsubishi Purifier Manual

Name

nput Key

Symbol

SET

MAIN

MON

OPT

+ (REG)

+TIN CNT

C LR

ENT

Description

Use this key when there is a need for changing a setting.

Use this key to have ordinary operation data displayed on

the screen (to display the "main screen").

Use this key when inputloutput signals are to be monitored

on the screen.

Press OPT then ENT to display the number of the alarm that

occurred last.

In the timerlcounter setting change mode, use this key to

move the cursor to the left digit.

Use this key to display the set timelelapsed time of the timer

and counter.

In the timerlcounter setting change mode, use the key to

move the cursor to the right digit.

Use this key to decrement a setting or an address (number)

bv 1.

Use this key to increment a setting or an address (number)

by 1.

Use this key to clear a changed setting.

Use this key to enter a changed setting.

A SELF.IECTOR Instruction Manual 5-7 Operation ~ a n u a l l

Page 46: Mitsubishi Purifier Manual

5.4.2 Expansion Board (Option)

Input display

Output display

Expansion board (Option) - Terminals

Fig. 5-3 Skiagram of Expansion Board

The expansion board is used for analog inputting of a Water Detector (WD) reading. It is provided only for a control panel with an optional water display.

The board has signal input and output functions, but the functions are not normally used.

A SELFJECTOR Instruction Manual 5-8 Operation ~ a n u a l l

Page 47: Mitsubishi Purifier Manual

6 Multi-Monitor 6.1 Multi-Monitor 6.1 . I General

The Multi-Monitor forms an integrated detection system with various detectors and data displays.

LED display functions (Flow rate, Temperature, Pressure, Revolution number)

Leakage Monitor function (LM)

Discharge Detector function (DD)

Water Detector function (WD)

Blinking or turn-on Blinking when Turn on when when l i h t liquid outlet press. is normal

Fig. 6-1 Block Diagram of Multi-Monitor

Indicate flow rate

Revolution signal

Indicate light liquid (proximity switch) - outlet press.

A SELFJECTOR Instruction Manual

Indicate heavy liquid outlet press.

Indicate horizontal shaft revolution number

6-1 Operation ~ a n u a l l

-

Power (DC24V) ,

aD aD

(temp. sensor) - Temp. signal

-

Automatic control panel

GBC-1, GBC-2, GSH-1

or

Alarm panel

Oil inlet press. signal

(press. sensor)

GAP-1 1 - (for GSH-1)

Feeding signal

Discharging signal,

Leakage signal

(No-Dis. signal)

Oil outlet press. signal

(press. sensor)

Page 48: Mitsubishi Purifier Manual

6.1.2 Kind of Multi-Monitor

The Multi-Monitor is available in three types (refer to Table 6-1) for selection according to the type of

automatic system.

Table 6-1

Trouble d i sp lay LED (red) ,,

Pressure adjustment LED (ye1 low)

1

MM-3

GSH-1

0

0

0 h ,C ,Yr- 3

0

0

0

0

0

Functions

Applied automatic control device

Leakage Monitor Function (LM)

Indication of inlet temperature

Indication of flow rate

Indication of outlet pressure

Discharge Detector Function (DD)

lndication of revolution number

Water Detector Function (WD)

Communication (RS485)

Rota t ion d i sp lay LED (green) \ '\

Pressure adjustment LED (ye1 low),

\ \ \

MM-1

GBC-1, GBC-2

Alarm panel : GAP-1 1

0

0

0

0 -

-

-

-

hhh

M M-2

GBC-1, GBC-2

(with DD)

0

0

0

0

0

0 -

0

1 [ A MlTSUBlSHI KAKOKI KAISHA, LTD. ] 1

Fig. 6-2 Sketch Drawing of MM-1 Fig. 6-3 Sketch Drawing of MM-2, MM-3

A SELFJECTOR Instruction Manual 6-2 Operation ~ a n u a l l

Page 49: Mitsubishi Purifier Manual

6.1.3 Explanation of internal switches on Multi-Monitor

Fig. 6-4 shows an internal view of the Multi-Monitor.

Fig. 6-4 Internal Drawing of Multi-Monitor (MM-2, MM-3)

NOTE

In case of the Multi-Monitor-1 (VIM-l), switches from number 3 to 12 and 22 are not attached to

the Multi-Monitor. The terminal block (No.23) consists of the board number 1 to 17.

A SELFJECTOR Instruction Manual 6-3 Operation ~ a n u a l l

Page 50: Mitsubishi Purifier Manual

Table 6-2 Designation of Internal Switches on Multi-Monitor

A SELFJECTOR Instruction Manual 6-4 Operation ~ a n u a l l

12 Water detection selector dial

0:No water detection / 1: Water detection

- -

Page 51: Mitsubishi Purifier Manual

6.1.4 ldentification and Location of Multi-Monitor Sensors

Fig.6-5 shows the identification and location of the Multi-Monitor sensors.

Pressure sensor for oil outlet (Yellow) \ Pressure sensor

for circulation line

Main parts of (Blue) Multi-Monitor

Pressure sensor for oil inlet (Green)

Temperature sensor (Black)

Revolution sensor (Proximity switch) (GSH-1 and Option) (White) U

Fig. 6-5 ldentification and Location of Multi-Monitor Sensors

6.1.5 Routine running Turn off power of Multi-Monitor before SELFJECTOR is left unused for a long time.

After turning on power of Multi-Monitor again, perform at least 10 minutes warm-up so as to stabilize

the internal circuit.

6.1.6 Precautions in handling

The Multi-Monitor is a precision instrument. Handle i t with utmost attention so as not to give shock, etc. Use the Multi-Monitor at ambient temperatures between 0 and 60 "C.

I

A SELFJECTOR Instruction Manual 6-5 Operation ~ a n u a l l ( I

Page 52: Mitsubishi Purifier Manual

6.2 Leakage Monitor Function (LM) 6.2.1 General

Pressure adjustment LED (yellow)

\ The Leakage Monitor Function of the Multi-Monitor is a protective \ device that detects:

Leakage of treated oil to feed liquid outlet Leakage of treated oil from bowl's sludge outlet because bowl is not properly closed

attributable to any reason and notifies it to SELFJECTOR control panel via the Multi-Monitor to minimize the loss of treated oil.

Multi-Monitor(MM1

6.2.2 Operating principle The pressure sensor installed on the light liquid outlet connecting piping of SELFJECTOR monitors the pressure at all times and if, for any reason, the pressure has dropped when the flow has decreased from a normal rate, deems treated oil is out-flowed and outputs an

Cable gland error signal. Use of a precision pressure sensor allows to detect a large leakage flowing to the heavy liquid side as well as a slight Fig. 6-6 leakage due to poor bowl opening. In the normal running, pressure control valve that is arranged on the treated oil outlet piping adjusted so as to apply a certain pressure. If, on account of accidental leakage of purifier, the pressure has dropped below an alarm trigger or lower limit level, an alarm is outputted.

W i n delay timer setting Whin hdd timer setting (Alarm cancel) (Alarm cancel) Hold timer m Hold timer 14

Pressure change Ressure drop due to pulsation due t o leakage

Drop below lower level

-\ ,-, 1 , , U

Start of feeding Time

Fig. 6-7

NOTE1 To prevent a false alarm, when actual back pressure, light liquid outlet pressure, falls below the alarm trigger or lower limit level, the Leakage Monitor will not issue a "Leakage" signal until after a certain period of time. The alarm trigger pressure is averaged by the CPU in the Multi-Monitor to follow with actual back pressure that is fluctuated by pressure pulsation at the light liquid outlet.

A SELFJECTOR Instruction Manual 6-6 Operation ~ a n u a l ?

Page 53: Mitsubishi Purifier Manual

Delay Timer After starting the feed, the light liquid pressure rises gradually. To prevent an alarm from being delivered during the period where the pressure achieve set pressure, a delay timer is provided.

Hold Timer As soon as the pressure has dropped below the alarm pressure while feeding, the timer for feeding starts counting and, if the time is up, delivers an alarm. If the preset pressure level is recovered while counting, the timer resets itself.

NOTE Be sure to adjust and set the light liquid side delivery pressure.

(Standard value : 0.15 MPa (1.5 kgf/cm2})

Since its operating principle is such that this instrument needs a steady pressure independent of the piping pressure loss downstream from SELFJECTOR for proper detection, adjust the pressure control valve to maintain the instrument under a necessary level of back pressure during the operation. When a light liquid delivery pressure beyond the standard level is required, refer to "Leakage Monitor (LM) " in the Operation Manual 2.

6.2.3 Connecting with control panel To avoid erratic alarms, "feeding" signal is inputted from the automatic control panel or alarm panel so that no alarm could be outputted unless when "feeding".

NOTE For a manual type, the feeding signal contact is normally closed to simulate feeding. To avoid a false alarm during sludge discharge, therefore, turn off the "MM Function Switch" on the starter panel before sludge discharge, then turn it on again after feeding is started.

n n n

A MlTSUBlSHI K A W K I KAISHA,LTD, Feeding - Alarm

Multi-Monitor(MM)

Fig. 6-8

Control Panel

A SELFJECTOR Instruction Manual 6-7 Operation ~ a n u a l l

F 0

S e id€ iss

Page 54: Mitsubishi Purifier Manual

6.2.4 LED display

1 1. "Pressure adjustment" (yellow)

! The pressure adjustment LED (yellow) flashes when light liquid pressure varies by * 15% or less from the 1

Multi-Monitor setting and stays ~lluminated while the variation is less than *3%. Adjust the back pressure regulating valve so as to just light the LED when feeding. (Set the back pressure to the standard setting for light liquid pressure is 0.15 MPa (1.5 kgf/cm2)).

2. "Leakage display" (red)

When a leakage is detected, the Error LED (red) on the Multi-Monitor panel and Leakage signal output LED (red) above the boards in the Multi-Monitor are illuminated and an alarm is issued to the control panel at the same time. The oil purifier is stopped as a result after sludge is discharged.

Specifically, the Leakage LED is lit when: Pressure fails to reach a constant level before the delay timer is up. Pressure falls below the alarm trigger or lower limit level and fails to return to a constant level before the hold timer is up.

For self-diagnosis, in the case of an abnormality with the light liquid sensor described below, the "Light Liquid Sensor Abnormal" LED (red) in the Multi-Monitor is illuminated, with "Error" and the corresponding error identification number displayed in the upper and lower seven segment displays, respectively, and an alarm is issued to the control panel at the same time. The oil purifier is stopped as a result after sludge is discharged.

An extraordinarily high voltage (equivalent to 0.45 MPa (4.5 kgf/cm2}) is detected at the pressure sensor.

Pressure adjustment LED (yellow) -

.Error LED (red) lighting

Fig. 6-9

Auxiliary display LED

@Flow rate Confirmat~on LED

for Input signal (ween) - -- --

Feed~n~ Rotat~on D~schapns

E r r o r

Power sw~tch LM alarm output sw~tch -

B B OFF ON

B El OFF ON

L Confirmat~on LED for output s~gnal (red) - -- -- . 0 0 0 n

Revolut~on No-discharge Abnormal temp. Sensor2 error

L U I ~ B K ~ Water detection Sensor1 error Sensor3 error

Fig. 6-10

- - -

NOTE When the self-diagnosis function is actuated, the Multi-Monitor holds "Error" and error identification number in display, which cannot be cleared until power is turned off. Affer the cause is identified and eliminated, reset by turning power off, then on.

!

A SELFJECTOR Instruction Manual 6-8 Operation ~ a n u a l l

Page 55: Mitsubishi Purifier Manual

6.2.5 Routine running LM alarm af@ut switch Normally, keep the LM alarm output switch in the Multi-Monitor n I in the ON position.

- I OFF ON

LM alarm (IFF LM alarm (H

Fig. 6-11

The AP(pressure drop) value in regard to the Leakage Monitor function varies in response to the1 1 changing level of actual back pressure. Therefore, it needs no adjustment even if light liquid side1 pressure dHers from its initial set value unless the deviation exceeds 0.2 MPa (2.0 kgf/cm2).

NOTE2 On the method of the back pressure regulating valve, make adjustments correctly in accordance with appropriate procedures described in " Leakage Monitor Function (LM) " in the Operation Manual 2. Wrong setting or adjustment may cause a false leakage alarm.

6.2.6 Items to adjust

Normally, the back pressure regulating valve requires no adjustments after set up at once, except in the

following cases. For the adjusting method, refer to "Leakage Monitor Function (LM)" in the Operation Manual

2.

A SELFJECTOR Instruction Manual

Adjustment

Change treating size of

SELFJECTOR

Change light liquid pressure

Operation ~ a n u a l l

Procedure

Adjust the light liquid pressure to a desired level by

pressure control valve.

Change light liquid pressure setting memorized in

the Multi-Monitor.

I sU 1 fol

Page 56: Mitsubishi Purifier Manual

When adjusting light liquid outlet side pressure and flow rate or changing values (light liquid pressure, A P(pressure drop), minimum light liquid pressure level, etc.) preset in the Multi-Monitor, be

sure to refer to section 4. 'Multi-Monitor" and section 5. 'Operation " in the Operation Manual 2 and follow the procedures described there. Failure to follow given instructions could result in a false alarm or cause damage to the machine.

6.2.7 Factory settings (main value) Delay timer : 40 sec Hold timer : 15 sec Set pressure (Set press.) : 0.1 5 MPa (1.5 kgf/cm2) Pressure drop ( A p) : 0.02 MPa (0.2 kgf/cm2)

A SELF.IECTOR Instruction Manual 6-1 0 Operation ~ a n u a l ?

Page 57: Mitsubishi Purifier Manual

rotation speed falls to a preset level due to sudden loss of energy by sludge discharge, the Discharge Detector detects it by means of a proximity switch installed on the horizontal shaft to determine that sludge discharge has taken place. Also, the Multi-Monitor tells that the purifier is in

Proximity switch operation for safety and precaution through the rotation display LED (green). In addition, as a self-diagnosis function, the trouble display LED (red), also on top of the Multi-Monitor, is lit Fig. 6-12

to indicate a troubled purifier when the detector output is equivalent to 2500 rpm or more or when rotation pulses skip.

6.3 Discharge Detector Function (DD) 6.3.1 General The Discharge Detector Function (DD) of the

Trouble display LED (red) Multi-Monitor is a protective device that monitors sludge

Rotation display LED (green) discharge from the SELFJECTOR and sends an alarm

6.3.3 Connecting with control panel

To prevent a false alarm, the Multi-Monitor is fed with "discharging" signal from the automatic control panel

during sludge discharge and issues an alarm signal only during feeding.

a

signal to the automatic control panel when it detects an abnormal discharge.

@aD on ). WITSUBISHI KROKI KAISH4,LTD.

O'MW,

OLP-Lbl Oh.l,rn Om-<w

6.3.2 Operating principle (Alarm function)

The Discharge Detect relies on the rotation speed

n n n

aD aD

change of the horizontal shaft to do the action; when the

/ & H I T S U B I S H I K A W K I KAISHA,LTD. ]

~ u ~ t i - M O ~ ~ ~ O ~ ( M M )

Discharging - Alarm

w

Fig. 6-13

Control Panel

A SELFJECTOR Instruction Manual 6-1 1 Operation ~ a n u a l l

Page 58: Mitsubishi Purifier Manual

6.3.4 LED displays 1. "Rotation display" (green)

Indicates the purifier is rotating and externally notifies safety alarmlcaution. Rotating : Flashing Standstill: Lighting

2. "Trouble display" (red)

As a self-diagnostic function, the LED lights any of the following cases. i The output corresponds to 2500 rpm of speed or higher

(A circuit failure is suspected.) ii The proximity switch input signal is unstable

(The proximity switch may be out of position.) Correct its position. This LED goes out as soon as its input signal has been stabilized

NOTE The trouble display LED (red) may be transiently illuminated when the purifier is in or out of operation, which is no indication of the detector being in trouble.

3. "No-Discharge display" (red)

In the state of a "discharging" signal being fed from the automatic control panel, if there is not a predetermined amount of speed drop in the oil purifier, the Error LED (red) on the Multi-Monitor panel and "No -Dischargeu signal output LED (red) above the boards in the Multi-Monitor are illuminated. At the same time, an alarm is delivered to the Multi-Monitor and the oil purifier is stopped as a result.

Trouble display LED (red)

Rotat~on d~splay LED (green)

Aux~l~ary d~splay LED

@Flow rate @ Confirmat~on LED

for Input Signal (green) Temperature

HITSUBISHI KAKOKI K A I S M , LTD @ L~ght Isutd pressure

@ Rcvolut~on number

@ Cmrculat~on now pcssurc

Error

Power swltch

D D alarm output sw~tch

Revolut~on output s w ~ t c h

l o l ~ OFF ON

Conf~rmat~on LED for output s~gnal (red) ,--- --- -

I I L I O O O RcwLtion No-dmhrga Abnormal temp Sensor2 error

Leakage Water detectton Sensor1 enor Sensor3 error @Error LED (red) l ~ g h t ~ n g

Proximity switch

Fig. 6-14 Fig. 6-15

A SELFJECTOR Instruction Manual 6-12 Operation ~ a n u a l l

Page 59: Mitsubishi Purifier Manual

6.3.5 Routine running

Normally, keep the DD alarm output switch in the Multi-Monitor in the ON position.

6.3.6 Items to adjust Normally, the Discharge Detector requires no adjustments. For further information, refer to "Discharge Detector Function (DD)" in the Operation Manual 2.

6.3.7 Precautions in handling

This is a precision instrument. Handle it with utmost attention so as not to give shock, etc. Securely tighten screws to mount the proximity switch (to torque 60 kg cm max.) Keep the turning shaft stopped when mounting the proximity switch. Do not use other proximity switches than furnished with the instrument

6. 6. TI or TI

P r in1 In Tt rn va

UI stc se se di! d€

A SELFJECTOR Instruction Manual 6-1 3 Operation ~ a n u a l l

Page 60: Mitsubishi Purifier Manual

6.4 Water Detector Function (WD) 6.4.1 General The Water Detector Function (WD) of the Multi-Monitor is a device to prevent separated water from leaking into light liquid (purified oil). It is available in two types, i.e., pressure sensor type water detector (GSH-1) and electrostatic capacity type water detector (option).

Photo 6-1 Pressure sensor type water detection system

( G-HIDENS system )

6.4.2 Pressure sensor type water detector (GSH-IIMM-3) 6.4.2.1 Operating principle The Water Detection system provided with a pressure sensor, which is called G-HIDENS system, is controlled on the automatic control panel (GSH-1) via the Multi-Monitor (MM-3). The G-HIDENS system constantly monitors separated water being accumulated in the bowl by means of a pressure sensor installed in the circulation line and causes separated water to be discharged before it leaks into light liquid (purified oil). In the clarifier operation, some of light liquid (purified oil) is returned to the feed liquid inlet via circulation line. The circulation line, which is provided with a back pressure valve, pressure sensor and pressure gauge, is maintained under a required level of back pressure by means of the back pressure valve, with the shut-off valve in the heavy liquid outlet line fully closed. Upon arrival of separated water in the bowl at the top disc outside level, the circulation of light liquid is stopped with an instantaneous drop in circulation line pressure. Detecting this pressure change, the pressure sensor sends a signal to the control panel via the Multi-Monitor to tell that the predetermined quantity of separated water has been accumulated in the bowl and separated water is discharged, normally in the partial discharge mode. In some cases, total charge with sludge takes place, depending on time spent before detection of pressure drop.

A SELFJECTOR Instruction Manual 6-14 Operation ~ a n u a l l

Page 61: Mitsubishi Purifier Manual

,, Circulation (some o f purified oil i s circulated) ,

I ( Back Dressure va lve

Feed l i q u i d ( d i r t y o i I ) i n l e t

L ight l i q u i d ( p u r i f i e d o i l ) OL

Pressure sensor Heavy l iqu id chamber L ight l iqu id chamber

r t l e t

r, x Circulation stop

I I

, Dischargr hole

Fig. 6-16

6.4.2.2 Connecting with control panel To prevent a false alarm, the Multi-Monitor is fed with "feeding" signal from the automatic control panel and issues an alarm signal only during feeding.

n n n I I

p Feeding

Control Panel

u Alarm

Multi-Monitor(MM1 p-

Fig. 6-17

A SELF.IECTOR Instruction Manual 6-1 5 Operation ~ a n u a l l

Page 62: Mitsubishi Purifier Manual

6.4.2.3 LED displays "Water detection display" (red)

In the state of being fed with "feeding" signal from the automatic control panel, when the pressure sensor in the G-HIDENS system circulation line detects the arrival of separated water at the predetermine level in the bowl, the Error LED (red) on the Multi-Monitor panel and the confirmation LED for output signal "Water Detection" LED (red) above internal boards in the Multi-Monitor are illuminated. At the same time, a signal is delivered to the control panel and the oil purifier is stopped after sludge discharge.

Also, for self-diagnosis, when an extraordinarily high voltage (equivalent to 0.45MPa (4.5 kgf/cm2}) is detected at the pressure sensor, the "Water Sensor Abnormal" output LED (red) in the Multi-Monitor is illuminated, with "Error" and the corresponding error identification number indicated in the upper and lower seven segment displays, respectively. At the same time, an alarm is issued to the control panel and the oil purifier is stopped as a result after sludge discharge.

NOTE To prevent a false alarm due to pressure fluctuation or pulsation at the start of oil feed or during normal running, the Delay Timer and Hold Timer are provided. Either timer is actuated when pressure falls below the preset level during running. If pressure fails to return to normal after the timer is up, the detector recognizes it as a "Water Detected" status and sends an alarm signal to the control panel.

NOTE When the self-diagnosis function is actuated, the Multi-Monitor holds "Error" and the error identification number in display, which cannot be cleared until power is turned off. After the cause is identified and eliminated, reset by turning power off, then on.

Aux~l~ary d~splay LED -- @Flaw rate

Confirrnat~on LED a a for Input s~gnal (green) Temperature & M l T S U B l S H l K A K M l KAISHA, LTD

[300 @L~ght llquld pressure Feedm8 Rotat~on

Dlscharglng Revolut,an number

@ C~rculabon flaw pressure

E r r o r

Power swltch Water Detect~on

A SELF.IECTOR Instruction Manual 6-16 Operation ~ a n u a l l

a a output sw~tch-

Dam OFF ON

OFF ON No Water / Heavy l ~ q u ~ d Detector Funct~on

Confirmat~on LED for Water Detector Funct~on

output s~gnal (red) -

Heavy llqu~d Detector Funct~on (for opt~onal use)

I 17 -----

.Error LED (red) llghtlng Revolut~on Nwd~scharge Abnormal temp Sensor2 error Leakage Watrr&tect.vn Sensor1 error Sensor3 error

Proxlrnrty sw~tch

Fig. 6-18 Fig. 6-19

Page 63: Mitsubishi Purifier Manual

6.4.2.4 Routine running For clarifier operation that needs the Water Detector Function, select "Water Detector Function" on the Water Detector Function selector dial in the Multi-Monitor. (See Fig. 6-1 9) For purifier operation that needs no Water Detector Function, select "No Water / Heavy liquid Detector Function" on the same dial.

Fb Water/Heavy I iquid DetecW Ftnction

Water kt& Ftncticn

For optimal use)

With the Water Detection output switch (See Fig. 6-19) in the ON position, the Water Detector monitors water being accumulated in the bowl. When it detects the arrival of water at predetermined level, it sends an output signal to the control panel and causing water to be discharged. Normally, clarifier operation is performed with the Water Detection output switch placed in the ON position.

Water Detection arOxrt witch Water Detection artput witch ~ O F F J position ~ O N J positian

NOTE When clarifier operation is switched to the purifier operation, the Water Detector Function selector dial in the Multi-Monitor setting must be from " Water Detector Function " to " No Water / Heavy liquid Detector Function " but the position of the Water Detection output switch needs not be changed to OFF.

6.4.2.5 Items to adjust

Normally, the Water Detector requires no adjustments. For further information, refer to "Water Detector

Function (WD)" in the Operation Manual 2.

A SELF.IECTOR Instruction Manual 6-17 Operation ~ a n u a l l

6.d

To

a u

tht

Page 64: Mitsubishi Purifier Manual

6.4.3 Electrostatic capacity type water detector (GSH-1IMM-2)

The electrostatic capacity type water detector relies on difference in dielectric constant between water and oil

to determine the capacitance of oil, thereby detecting the water content of oil.

This detector is installed in the light liquid outlet piping of the SELFJECTOR and controlled on the automatic

control panel (GSH-1).

In the clarifier operation, the detector monitors the water content of light liquid. When a rise of approximately

0.5% occurs in the water content, the detector recognizes it as "water in the bowl having arrived at

predetermined level" and issues an output signal to the control panel. Water is discharged as a result.

6.4.3.1 Connecting with control panel

To prevent a false alarm, the electrostatic capacity type Water Detector is fed with "feeding" signal from the

automatic control panel and issues an alarm signal only during feeding. This detector exchanges signals with

the control panel, not via the Multi-Monitor but directly.

Capacitance type

Water Detector

Feeding - Alarm -

Fig. 6-20

A SELFJECTOR Instruction Manual 6-1 8 Zce-a: en ~ a n u a l l

Page 65: Mitsubishi Purifier Manual

6.5 Partial discharge detection function (GSH-1) The automatic GSH-1 system combined with Multi-Monitor MM-3 has a Partial Discharge Detection Function that, in addition to sludge discharge monitoring, indicates whether or not sludge discharge is optimal for partial discharge adjustment.

6.5.1 Operating principle When the Partial Discharge Detection Function of the Multi-Monitor monitoring the horizontal shaft rotation speed of the SELFJECTOR detects a rotation speed drop (peak hold) during sludge discharge, it compares the data with the optimal discharge value preset for each SJ-G model to determine if the quantity of discharge effected is optimal. And the Multi-monitor indicates the result of comparison through confirmation LEDs (Over, Just, Under) for partial discharge. (See Fig. 6-22)

Datum sensitivity VR -- --. -- Discharge measurement - - switch ,,

Dischargr quantity setting switch

" M

Center voltage of discharge quantity setting switch - - -. - - --

OFF ON

Fig. 6-21

Partial discharge confirmation LED -pppp --

I OVER (LED red)

U JUST (LED green)

I UNDER (LED red)

O MEASURING (LED green)

1. 50Hz / 60Hz selector switch 2. Partial ON / OFF selector switch -

DD alarm output switch -.p--pp

Dam OFF ON

DD alarm output switch ONIOFF control of discharge alarm output

/ 50Hz I60Hz selector switch Used to select SELFJECTOR power source frequency (50Hz or 60Hz). 1

Partial ON I OFF switch 0 Discharge measurement switch

Used for constant monitoring of sludge discharge to determine optimal or otherwise. The status of sludge discharge is indicated through partial discharge LEDs. Measures quantity of sludge discharged only once to determine if discharge is optimal. Pressing this button switch illuminates green LED in it and starts measurement

A SELFJECTOR Instruction Manual 6-1 9 Operation ~ a n u a l l

of sludge discharge (if partial ONIOFF switch is OFF). Lit when discharge is more than preset. Lit when discharge is optimal as preset. Lit when discharge is less than preset. Lit when discharae measurement switch is messed.

partial discharge

confirmation LED

OVER (red) JUST (green) UNDER (red) MEASURING (areen)

Page 66: Mitsubishi Purifier Manual

6.5.2 Items to adjust 6.5.2.1 50Hz I 60Hz selector switch Remove the front cover of the Multi-Monitor and set the switch (See Fig.6-22) to the power frequency of the SELFJECTOR (50 Hz or 60 Hz).

Settingto60l-b Settingto 50 M

NOTE The switch in wrong position prevents the Partial Discharge Detector from measuring the quantity of sludge being discharged accurately. Be sure that the switch in the right position before discharge measurement.

6.5.2.2 Measure of the amount of discharge

There are two purposes for which sludge discharge measurement is performed.

1. Monitoring during normal running

Set the partial ONIOFF switch (See Fig. 6-22) to ON. The detector becomes ready to constantly monitor

partial discharge for "No-Discharge" status. Normally, the SELFJECTOR is run with this switch in the ON

position.

2. Partial discharge adjustment 1 confirmation

Set the partial ONIOFF switch to OFF, then press the discharge measurement switch (See Fig. 6-22).

Measurement is immediately effected - only once.

Partial aV / (FF switch Partial aV / (FF switch TON] positim r 0 F FJ p i t i m

NOTE With the partial ON/OFF switch in the ON position, the discharge measurement switch is in op era five.

A SELFJECTOR Instruction Manual 6-20 - - - - - - - - --#= =. - t . q ~ n ~ a 1 1

Page 67: Mitsubishi Purifier Manual

6.6 Display Function 6.6.1 General

The Multi-Monitor is provided with two 4-digit seven segment displays (upper and lower) that indicate

SELFJECTOR sensor output data (flow rate, temperature, pressure, rotation number, etc.) and error. Settings

can be altered by use of four function setting switches (SW1 - 4) and altered data are stored in the internal

memory of the Multi-Monitor.

&per E E BE Lower ffl E E BE

n m n

Fig. 6-22

ma ap

6.6.2 Configuration of display

In normal operation, the flow rate is incrementally indicated in the upper seven segment display at every

5 seconds. In the lower display, the feed liquid temperature and light liquid pressure are indicated in the

same way.

Using the function setting switches (SW1 - 4), the feed liquid temperature, light liquid pressure and speed

(MM-2 and MM3 only), and circulation line pressure (MM-3 only) can be fixedly indicated in the lower

seven segment display.

In the case of an error, "Error" and the corresponding error identification number appear in the upper and

lower seven segment displays, respectively. (See Table 6-3.)

At the time of setting change, the setting number and set value are indicated in the upper and lower

seven segment displays, respectively.

A SELFJECTOR Instruction Manual 6-2 1 Operation ~ a n u a l l

a The expansion of I&! MITSUBISHI KAKOKI KAISHA, LTD, a part of the display @ F IUX(L/I+)

Inl @x10 @ Tenp. (t)

SV @ L press. ( npa)

0 @ Rev. ( r/n)

@ Y/H press (Mpn)

@ Error

Page 68: Mitsubishi Purifier Manual

n A I I Function setting switches - - - -- - . . - -

SW1 :Select of setting item SW2 : Forward item

SW4 : Enter

Fig. 6-23

Table 6-3

Light liquid pressure ( Revolution number 1

NOTE (Speed): Multi-Monitor with Discharge Detector Function (Circulation line pressure): Multi-Monitor with Water Detector Function (G-HIDENS system specification)

A SELFJECTOR Instruction Manual 6-22 Operation ~ a n u a l l

Page 69: Mitsubishi Purifier Manual

6.6.3 Factory settings

1 Power switch / ONIOFF OFF 1 OFF 1 OFF 1 2

3

4

1 Frequency

5

1 Kinds of oil

-

-

-

1 SELFJECTOR-G model

-

9 1 3 1 Gear pump model

LM alarm output switch

DD alarm output switch

Water Detection output switch

10 4 Minimum light liquid pressure (M Pa)

Partial discharge detection function

ON I OFF

ON I OFF

ON I OFF

Delay timer

ON I OFF

1 1

Minimum WD pressure 1 4 1 l o / IMPa\

OFF

-

-

-

5

OFF

OFF

LM trigger pressure (AP) (M Pa)

15

NOTE Shown above are shop-set default values. At test operation, it is necessary to adjust the settings according to the specification/model of SELFJECTOR. For set values, refer to "Multi-Monitor" in the Operation Manual 2.

OFF

OFF

OFF

16

A SELFJECTOR Instruction Manual 6-23 Operation ~ a n u a l l

- 1 OFF

OFF ~

12

13

WD trigger pressure (AW)

(MPa) Light liquid pressure (M Pa)

0.010-0.10 -

0.03-0.30 0.15