Instruction Manual

Water supply unit with receiver tank Model RMB

To users

Keep this manual along with the separately attached “Home Pump Instruction Manual” for future reference.

Warning Do not carry out any operation, inspection, or maintenance of the water supply unit until you read this manual and understand the contents. Keep this manual carefully at hand so that you can consult it anytime when operating, maintaining, or inspecting the water supply unit.

To contractors who carry out installation work:

Be sure to deliver this manual to user(s) who will carry out operation, inspection, and maintenance of the water supply unit.

Teral Inc.

I

Limited warranties

1. In the event of a failure or breakage under proper use of the product during the warranty period, equipment supplied by Teral Inc. shall be repaired or replaced free of charge within the scope of the relevant part, provided that such failure or breakage is attributable to inadequacy of the design or workmanship of the equipment.

2. The warranty mentioned in the above clause shall be only the mechanical warranty of the defective part, and shall not cover any expenses or other damage arising from the failure or breakage.

3. In the event of the following failures and breakage, the costs of the repairs shall be borne by the user.(1) Failures and breakage attributable to equipment that was not delivered by Teral Inc. (2) Failures and breakage after the expiration of the warranty period (3) Failures and breakage caused by disasters or force majeure, such as fire, acts of God, or

earthquakes (4) Failures and breakage resulting from repairs or modifications made without the consent of Teral

Inc.(5) Failures and breakage when parts other than those designated by Teral Inc. are used

4. Teral Inc. shall not be liable for any damage caused by incorrect or reckless use of the water supply unit. The costs and expenses incurred for sending engineer(s) in such a case shall be borne by the user.

5. If the cause of a failure is unclear, necessary actions shall be determined through mutual consultation.

II

Purpose of this manual The purpose of this manual is to provide the user with detailed information necessary to properly operate, maintain, and inspect the water supply unit.

This manual contains the following information and is intended for persons experienced in the operation of water supply units, or for those who have been trained by such experienced operators. Only qualified personnel such as licensed electrical engineers are allowed to carry out the electrical wiring work.

ContentsLimited warranties········································································································ IPurpose of this manual································································································ IIContents ···················································································································· II

1. Safety precautions ································································································ 1-11.1 Types and meanings of warning labels··································································· 1-11.2 Safety precautions ····························································································· 1-11.2.1. Precautions on operation··············································································· 1-11.2.2. Precautions on installation, maintenance, and inspection····································· 1-2

2. Configuration and overview of the unit ······································································ 2-32.1 Name of each part ····························································································· 2-32.2 Specifications of the unit ····················································································· 2-4

3. Installation of the unit····························································································· 3-13.1 Before using the unit ·························································································· 3-13.2 Precautions on installation ··················································································· 3-13.3 Precautions on piping work ·················································································· 3-23.4 Precautions on wiring work ·················································································· 3-43.5 Precautions on measures against freezing······························································ 3-43.6 Operation and handling······················································································· 3-5

4. Troubleshooting···································································································· 4-1

1-1

1. Safety precautions

1.1 Types and meanings of warning labels This instruction manual divides precautions into the following four categories according to the level of hazards (or the severity of the accident).

Be sure to understand the meanings of the following terms and comply with the content (instructions) of the instruction manual.

Warning label Meaning

Danger Indicates an imminently hazardous situation. Failure to observe the procedures or instructions will result in death or serious injury.

Warning Indicates a potentially hazardous situation. Failure to observe the procedures or instructions may result in death or serious injury.

CautionIndicates a potentially hazardous situation. Failure to observe the procedures or instructions will result in minor or moderate injury or cause damage to equipment or devices.

Note Indicates information that is in particular to be noted or emphasized.

1.2 Safety precautions

1.2.1. Precautions on operation (1) Do not use the power cable or power plug if they are damaged. Do not use the unit if the

power plug is not firmly inserted into the outlet. Failure to observe this may lead to a fire or electric shock.

(2) Do not use wet hands to connect/disconnect the power plug or operate the ground fault interrupter.Failure to observe this may lead to an electric shock.

(3) Do not leave the pump cover off. Otherwise, rainwater or dust gets into the motor; and resulting insulation degradation or other problems may lead to an electric shock or fire.

(4) Do not put a blanket or other material over the pump cover or the internal motor section in order to prevent freezing. Overheating may occur, thus leading to ignition and a fire.

(5) Do not touch the pump or motor during operation. Failure to observe this may lead to burns.

(6) Do not step on the main unit or place an object onto it. Failure to observe this may lead to an accident.

(7) Never run the pump dry (operation without any water being pumped out). Failure to observe this may lead to a fire or electric shock.

(8) Run the pump at the rated voltage. Failure to observe this may lead to a fire or electric shock.

1-2

1.2.2. Precautions on installation, maintenance, and inspection (1) Never disassemble, repair, or modify the product.

Failure to observe this may lead to ignition or malfunction, resulting in injury. (2) Before starting maintenance or inspection, be sure to disconnect the power plug or turn off

the ground fault interrupter. (3) Do not put anything inside the pump cover.

Overheating may occur, thus leading to ignition and a fire. (4) Before starting grounding work, be sure to disconnect the power plug or turn off the ground

fault interrupter. Failure to observe this may lead to an electric shock.

2-3

2. Configuration and overview of the unit

2.1 Name of each part

Typical configuration (Model RMB0.5, single-pump operation) * See the installation manual for details.

Elbow socket

Nut

Packing

Overflow pipe

Low-level float switch

Full-level float switch(option)

Packing

Plain washerNut

Packing

Cylinder type water hammer arrestor

Ball tap

Packing

Drain cap

Packing

Packing

Nut

Nut

Plainwasher

Plainwasher

Bolt

Rubberwasher

Plain washer

Suctionpipe

2-4

2.2 Specifications of the unit

Warning

Do not use the unit under any conditions other than those provided in the specifications. Failure to observe this may lead to an electric shock, fire, or product failure.

Installation location Indoors and outdoors (ambient temperature: 0 to 40°C)

Receiver tank material

50L, 100L, 200L, 300L, and 500L: ultra-high molecular weight polyethylene1000L: FRP

Receiver tank model

Receiver tank

capacity(L)

Availablecapacity

(L)

Ball tap bore (mm)

Overflow bore (mm) Color

RMB0.5 50 72 20 32 Gray

RMB1 100 138 20 32 Gray

RMB2 200 232 13 32 Gray

RMB3 300 268 13 32 Beige

RMB5 500 442 13 32 Beige

RMB10 1000 740 13 32Cream

(Munsell 2.5Y 9/5)

3-1

3. Installation of the unit

3.1 Before using the unit Upon receiving your unit, check the following points first. (1) Check the nameplate to verify that the product is what you ordered. (2) No part of the product is damaged during transportation. (3) All fastening parts including bolts or nuts are securely tightened. (4) All the accessories that you ordered have been delivered.

3.2 Precautions on installation

(1) Select a well-ventilated location which allows the user to monitor the running pump on a daily basis and to have easy access for repairs and inspection.

Bad

Avoid tight space or poorly-ventilated areas.

(2) Motors and wiring installations are very sensitive to moisture. Ensure to provide an adequate drainage system.

Good

Install the unit in a well-ventilated place and install a drain ditch.

3-2

(3) The installation foundations must be large and thick enough to withstand the weight of the unit.

Bad Good

Pebbles, nails, glass, and other debris will damage the receiver tank.

If you install the unit on concrete blocks, arrange them in parallel crosses and join them with mortar.

The surface should be flat and even.

(4) Check the levelness of the installation foundations with a spirit level, and ensure that the surface is flat and even. Take care not to damage the receiver tank.

3.3 Precautions on piping work Conduct all piping work in accordance with the Water Bureau Plumbing Code issued by local water departments or governments to meet the specific local conditions and requirements.

(1) Use pipes of specified sizes for galvanized steel pipes for water service, stainless steel pipes, unplasticized polyvinylchloride pipe, and polyethylene pipes. Using a smaller size pipe will significantly decrease the performance.

(2) To minimize the water resistance, use suction and discharge pipes with minimum bends.

Bad

The pipes must be short with minimum bends.

3-3

(3) Carefully install fittings of the piping. Any leakage will lead to insufficient water flow and pressure, thus resulting in a failure.

(4) Install a sluice valve somewhere on the outlet water line (discharge line). The valve will be useful for inspection and repair work.

(5) Keep the end of the overflow pipe away from the water surface at any time. Provide an adequate drainage system to prevent water backflow.

Bad Good

Use indirect waste piping for the overflow pipe.

(6) If no water is used for several days, change water in the receiver tank and keep it sanitary. The water can be drained through the drain hole (see the figure on page 2-1). Ensure to install a sluice valve somewhere on the drain line.

(7) Use a flexible tube for the connection to the ball tap and to the pump discharge port. (The flexible tubes are special accessories.)

(8) Use a drain adapter (a special accessory) when connecting a drain pipe to the receiver tank. Because an excessive force on the drain adapter can damage the thread, ensure to attach a flexible tube to the male thread of the drain adapter. (The flexible tubes are special accessories.)

Caution

If you tighten plastic parts such as a drain adapter too much, you may damage the threads, thus resulting in water leakage.

Bad

Connect fittings carefully.

3-4

3.4 Precautions on wiring work

Warning

Carry out all wiring work safely and securely in accordance with the Technical Standard for Electric Facilities as well as the Internal Wiring Standards. Incorrect work may cause an electric shock or fire.

· To prevent an electric shock, ensure to connect a ground wire to a ground terminal.

Warning

· Before starting grounding work, be sure to disconnect the power plug or turn off the ground fault interrupter.

· Do not connect a ground wire to a gas pipe or a water pipe. Failure to observe this may lead to an explosion or electric shock.

3.5 Precautions on measures against freezing Even in a warm region, an unexpected cold wave may freeze and damage the piping, pump, and other installations in winter. Take adequate measures to prevent freezing.

(1) Bury any horizontal sections of the suction and discharge pipes deep in the ground wherever possible. Wrap insulating materials made of felt, glass wool, and others around any above-ground sections of the pipes.

(2) A ceramic heater is directly attached to the pump body to protect it from freezing. This heater is activated/deactivated with its thermostat, depending on the level of the ambient temperature (it turns on at 5±3°C and turns off at 15±3°C). If you turn off the power—for example, because you do not use the unit for a long time, ensure to drain the pump, pipes, and other parts to prevent freezing.

Bad Good

This can cause fire. Take adequate measures against freezing.

Insulation material

Ground wire

3-5

3.6 Operation and handling (1) Open the valve on the suction pipe to feed water into the receiver tank. (2) Open the valve on the discharge pipe and turn the faucet on. (3) Remove the pump cover. (4) Remove the priming plug from the priming port to prime water until water spills out of the

priming port.

Caution

Never run the pump without priming. Failure to observe this may cause the sliding parts inside the pump to seize up.

(5) Once the unit has started running properly, confirm whether the pump runs automatically by turning the faucet on and off, and check for any leakage.

Caution

When the unit is running, do not touch the casing or the motor. Otherwise, you may get burned with hot surfaces.

(6) Low-level float switch (single-pump operation) The unit is fitted with “the low-level detection float switch for dry-run prevention” which automatically stops the pump when the water level in the receiver tank drops to a specified level.· While the float is underwater, the unit can run in automatic mode. · If the float is completely in the air, automatic mode is disabled.

Electrode (automatic alternate operation, automatic alternate parallel operation) 4-pole electrodes detect water levels of Full, Dry-run prevention (low water level), and Dry-run recovery. Refer to instruction manuals of Models THP_-V-D or Models THP_-V-W for details.

(7) Keep good ventilation during the hot, rainy season Humid conditions in the hot, rainy season cause condensation on/inside the unit. Ensure that the place is well ventilated to keep the inside of the unit dry.

(8) How to drain water Take the following steps to drain water from the auxiliary tank or the pump for anti-freezing, maintenance, inspection, repairs, or for other reasons:

Warning

· Do not connect/disconnect the power plug or operate the ground fault interrupter with wet hands. Failure to observe this may lead to an electric shock.

· Before carrying out any maintenance, inspection, repairs, or other work, be sure to turn off the power. Failure to observe this may lead to an electric shock or injury.

Turn off the power, and then discharge water by turning on the faucet. Remove the priming plug from the auxiliary tank. Remove the drain plug of the pump to discharge water from the pump. Remove the plug and the valve plug attached to the suction side (check valve) of the pump to drop water from the suction pipe into the receiver tank.

When the discharge is complete, put the removed drain plug, plug, and valve plug back in place and securely fasten them.

When you restart the operation, prime the auxiliary tank, attach the priming plug, and then turn the power on.

4-1

4. Troubleshooting

If there is something wrong with the pump, thoroughly investigate the cause. If it is necessary to replace parts and/or repair the unit, be sure to ask the vendor or the service center specified by the manufacturer.

Problem Cause Action Power failure Contact the power company. Power cable is broken. Replace the cable. Pressure switch is broken. Replace the pressure switch. Motor has failed. Repair. Low-level float switch is broken. Replace the low-level float switch.

Protector trips.

Press the reset button of the protector. If the protector trips again soon after being reset, do not press the button repeatedly; instead, remove the cause first and then press the button.

Voltage drops. Consult the power company. Defective capacitor (single phase) Replace the capacitor.

Pump does not run.

No water in receiver tank Ensure the proper water level.

Pump is sucking air from the suction side.

Check any pipe joints and connections to the pump; and take measures to prevent air intrusion.Pump runs but does

not pump up water. Non-return valve (check valve) is broken. Repair.

Pressure switch is broken. Replace the pressure switch. Flow switch is broken. Replace the flow switch. Pump does not stop

running. Impeller is worn or deformed. Replace the impeller.

Non-return valve (check valve) is broken. Repair.

Water is leaking from pipes or faucets. Check for any leakage; and repair.

Pump starts running although water is not used.

Flow switch is broken. Replace the flow switch. The pump starts running soon after any faucets are turned on.

Flow switch is broken. Replace the flow switch.

Excessive voltage drops. Consult the power company. The pump is contaminated with foreign matter. Remove the cover and foreign matter.

Motor hums but does not run. Repair.Protector trips.

Pump is frozen. Melt ice with hot water and inspect any heat insulating devices.

Head Office 230, Moriwake, Miyuki-cho, Fukuyama-city, Hiroshima, 720-0003, Japan

Tel.+81-84-955-1111 Fax.+81-84-955-5777

www.teral.net2016 10

E-IMN-00007-000-D