Document Potter

MFG. #5400928 - REV D1/08

PRINTED IN USA PAGE 1 OF 3

MODEL PS10PRESSURE SWITCH

Patent Pending

InstallationThe Potter PS10 Series Pressure Actuated Switches are designed for the detection of a waterfl ow condition in automatic fi re sprinkler systems of particular designs such as wet pipe systems with alarm check valves, dry pipe, preaction, or deluge valves. The PS10 is also suitable to provide a low pressure supervisory signal; adjustable between 4 and 15 psi (0,27 and 1,03 BAR). 1. Apply Tefl on tape to the threaded male connection on the device. (Do not use pipe dope)2. Device should be mounted in the upright position (threaded connection down).3. Tighten the device using a wrench on the fl ats on the device.

Wiring Instructions 1. Remove the tamper resistant screw with the special key provided. 2. Carefully place a screwdriver on the edge of the knockout and sharply apply a force suffi cient to dislodge the knockout plug. See Fig 9 3. Run wires through an approved conduit connector and affi x the connector to the device. 4. Connect the wires to the appropriate terminal connections for the service intended. See Figures 2,4,5, and 6. See Fig 7 for two switch, one conduit wiring.

Testing The operation of the pressure alarm switch should be tested upon completion of installation and periodically thereafter in accordance with the applicable NFPA codes and standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently).Wet System Method 1: When using PS10 and control unit with retard - connect PS10

(UL, cUL, and CSFM Listed, FM and LPC Approved, NYMEA Accepted, CE Marked Pending)Dimensions: 3.78" (9,6cm)W x 3.20" (8,1cm)D x 4.22" (10,7cm)HConduit Entrance: Two knockouts provided for 1/2" conduit. Individual switch compartments and ground screws suitable for dissimilar voltages.Enclosure: Cover - Die-cast with textured red powdercoat fi nish, single cover screw and rain lip. Base - Die-cast Pressure Connection: Nylon 1/2" NPT MaleFactory Adjustment: 4 - 8 PSI (0,27 - 0,55 BAR)Differential: 2 PSI (0,13 BAR) typicalMaximum System Pressure: 300 PSI (20,68 BAR)Switch Contacts: SPDT (Form C) 10.1 Amps at 125/250VAC, 2.0 Amps at 30VDC One SPDT in PS10-1, Two SPDT in PS10-2Environmental Specifi cations: NEMA 4/IP55 Rated Enclosure - indoor or outdoor when used with NEMA 4 conduit fi ttings. Temperature range: -40°F to 140°F (-40°C to 60°C) Service Use: Automatic Sprinkler NFPA-13 One or two family dwelling NFPA-13D Residential Occupancy up to four stories NFPA-13R National Fire Alarm Code NFPA-72

Potter Electric Signal Company • 2081 Craig Road, St. Louis, MO, 63146-4161 • Phone: 800-325-3936/Canada 888-882-1833 • www.pottersignal.com

into alarm port piping on the input side of retard chamber and electrically connect PS10 to control unit that provides a retard to compensate for surges. Insure that no unsupervised shut-off valves are present between the alarm check valve and PS10.Method 2: When using the PS10 for local bell application or with a control that does not provide a retard feature - the PS10 must be installed on the alarm outlet side of the retard chamber of the sprinkler system.Testing: Accomplished by opening the inspector's end-of-line test valve. Allow time to compensate for system or control retard. Note: Method 2 is not applicable for remote station service use, if there is an unsupervised shut-off valve between the alarm check valve and the PS10.

Wet System With Excess Pressure Connect PS10 into alarm port piping extending from alarm check valve. Retard provisions are not required. Insure that no unsupervised shut-off valves are present between the alarm check valve and the PS10. Testing: Accomplished by opening the water by-pass test valve or the inspector's end-of-line test valve. When using end-of-line test, allow time for excess pressure to bleed off.

Dry System Connect PS10 into alarm port piping that extends from the intermediate chamber of the alarm check valve. Install on the outlet side of the in-line check valve of the alarm port piping. Insure that no unsupervised shut-off valves are present between the alarm check valve and the PS10. Testing: Accomplished by opening the water by-pass test valve.Note: The above tests may also activate any other circuit closer or water motor gongs that are present on the system.

TamperCover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device. For optional cover tamper switch kit, order Stock No. 0090200. See bulletin #5401200 PSCTSK.

Ordering Information Model Description Stock No.PS10-1 Pressure switch with one set 1340103 SPDT contactsPS10-2 Pressure switch with two sets 1340104 SPDT contacts Hex Key 5250062 Cover Tamper Switch Kit 0090200

MFG. #5400928 - REV D 1/08



Typical Sprinkler Applications

Switch Clamping Plate TerminalDimensions

OUTGOING

INCOMING

DWG# 923-3

Low Pressure Signal Connection

EOLR

TO FIRE ALARM PANEL

EOLR

TO FIRE ALARM PANEL

Waterfl ow Signal Connection

WET SYSTEM WITH EXCESS PRESSURE

WATER MOTOR GONG

PS10

RBVSWET SYSTEM ALARM CHECK VALVE

OS & Y VALVE

WATER BY-PASS VALVE

WET SYSTEM WITHOUT EXCESS PRESSURE

WATER MOTOR GONG

WET SYSTEM ALARM CHECK VALVE

OS & Y VALVE

RBVS

WATER BY-PASS VALVE

RETARD

PS10

DRY SYSTEM ALARM CHECK VALVE

OS & Y VALVE

WATER BY-PASS VALVE

CHECK VALVE RBVS

DRY SYSTEM

PS10 WATER MOTOR GONG

DWG. #923-2AA

Fig. 2

Fig. 4 Fig. 5

Fig. 3

NOTE: To prevent leakage, apply Teflon tape sealant to male threads only.

ADJUSTMENT KNOB

2.87[72.97]

4.22[107.19]

2.48[62.87]

3.78[95.89]

3.20[81.28]

1.60[40.64]

Fig. 1

GROUND SCREWS

1/2" NPT

An uninsulated section of a single conductor should not be looped around the terminal and serve as two separate connections. The wire must be severed, thereby providing supervision of the connection in the event that the wire becomes dislodged from under the terminal.

Closing of any shutoff valves between the alarm check valve and the PS10 will render the PS10inoperative. To comply with NFPA-72 any such valve shall be electrically supervised with asupervisory switch such as Potter Model RBVS.

POSITIVE DCOR HOT AC

BELL

NEGATIVE DCOR NEUTRAL AC

LINE LOAD

Local Bell For Waterfl ow ConnectionFig. 6

MFG. #5400928 - REV D 1/08



Break out thin section of divider to provide path for wires when wiring both switches from one conduit entrance.

One Conduit WiringFig. 7 Fig. 9

Removing Knockouts

W/ PRESSURE APPLIED

W/O PRESSURE APPLIED

NC

NO

C

C 1 2

NC

NO

C

C 1 2

Changing PressureFig. 8

•Installation must be performed by qualifi ed personnel and in accordance with all national and local codes and ordinances. •Shock hazard. Disconnect power source before servicing. Serious injury or death could result. •Read all instructions carefully and understand them before starting installation. Save instructions for future use. Failure to read and understand instructions could result in improper operation of device resulting in serious injury or death.•Risk of explosion. Not for use is hazardous locations. Serious injury or death could result.

•Do not tighten by grasping the switch enclosure. Use wrenching fl ats on the bushing only. Failure to install properly could damage the switch and cause improper operation resulting in damage to equipment and property. •To seal threads, apply Tefl on tape to male threads only. Using joint compounds or cement can obstruct the pressure port inlet and result in improper device operation and damage to equipment. •Do not over tighten the device, standard piping practices apply.

Engineer/Architect Specifi cations Pressure Type Waterfl ow Switch Pressure type waterfl ow switches; shall be a Model PS10 as manufactured by Potter Electric Signal Company, St Louis MO., and shall be installed on the fi re sprinkler system as shown and or specifi ed herein.Switches shall be provided with a ½” NPT male pressure connection and shall be connected to the alarm port outlet of; Wet Pipe Alarm Valves, Dry Pipe Valves, Pre-Action Valves, or Deluge Valves. The pressure switch shall be actuated when the alarm line pressure reaches 4 - 8 PSI (0,27 - 0,55 BAR).Pressure type waterfl ow switches shall have a maximum service pressure rating of 300 PSI (20,68 BAR) and shall be factory adjusted to operate on a pressure increase of 4 - 8 PSI (0,27 - 0,55 BAR)

Pressure switch shall have one or two form C contacts, switch contact rating 10.1 Amps at 125/250 VAC, 2.0 Amps at 30 VDC.Pressure type waterfl ow switches shall have two conduit entrances one for each individual switch compartment to facilitate the use of dissimilar voltages for each individual switch. The cover of the pressure type waterfl ow switch shall be Zinc die-cast with rain lip and shall attach with one tamper resistant screw. The Pressure type waterfl ow switch shall be suitable for indoor or outdoor service with a NEMA 4/IP55 rating.The pressure type waterfl ow switch shall be UL Ulc and CSFM listed, FM and LPC approved and NYMEA accepted.

For low pressure use: Com and Terminal 1

For waterfl ow use: Com and Terminal 2

MFG. #5400930 - REV D1/08



InstallationThe Potter PS40 Series Pressure Actuated Switches are designed primarily to detect an increase and/or decrease from normal system pressure in automatic fi re sprinkler systems. Typical applications are: Dry pipe system, pre-action air/nitrogen supervision, pressure tanks, air supplies, and water supplies. The PS40 switch is factory set for 40 PSI (2,8 BAR) normal system pressure. The switch marked with the word LOW is set to operate at a pressure decrease of 10 PSI (,7 BAR) at 30 PSI (2,1 BAR). The switch marked with the word HIGH is set to operate at a pressure increase of 10 PSI (,7 BAR) at 50 PSI (3,5 BAR). See section heading Adjustments and Testing if other than factory set point is required.1. Connect the PS40 to the system side of any shutoff or check valve. 2. Apply Tefl on tape to the threaded male connection on the device. (Do not use pipe dope) 3. Device should be mounted in the upright position. (Threaded connection down) 4. Tighten the device using a wrench on the fl ats on the device.

Wiring Instructions1. Remove the tamper resistant screw with the special key provided. 2. Carefully place a screwdriver on the edge of the knockout and sharply apply a force suffi cient to dislodge the knockout plug. See Fig. 9 3. Run wires through an approved conduit connector and affi x the connector to the device. A NEMA-4 rated conduit fi tting is required for outdoor use.

(UL, cUL, and CSFM Listed, FM and LPC Approved, NYMEA Accepted, CE Marked Pending)Dimensions: 3.78" (9,6cm)W x 3.20" (8,1cm)D x 4.22" (10,7cm)HConduit Entrance: Two knockouts provided for 1/2" conduit. Individual switch compartments and ground screw suitable for dissimilar voltagesEnclosure: Cover- Die-cast with textured red powdercoat fi nish, single cover screw and rain lip. Base- Die-cast Pressure Connection: Nylon 1/2" NPT maleFactory Adjustment: PS40-1 operates on decrease at 30 PSI (2,1 BAR) PS40-2 operates in increase at 50 PSI (3,5 BAR) and on decrease at 30 PSI (2,1 BAR)Pressure Range: 10-60 PSI (,7 - 4,1 BAR)Differential: Typical 1 lb. at 10 PSI (,07 at ,7 BAR)

4 lbs at 60 PSI (,28 at 4,1 BAR)Maximum System Pressure: 300 PSI (20,68 BAR)Switch Contacts: SPDT (Form C) 10.1 Amps at 125/250VAC, 2.0 Amps at 30VDC One SPDT in PS40-1, Two SPDT in PS40-2Environmental Specifi cations: NEMA 4/IP55 Rated Enclosure - indoor or outdoor when used with NEMA 4 conduit fi ttings. Temperature range: -40°F to 140°F (-40°C to 60°C) Tamper: Cover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device. For optional cover tamper switch kit, order Stock No. 0090200. See bulletin #5401200 PSCTSK.Service Use: Automatic Sprinkler NFPA-13 One or two family dwelling NFPA-13D Residential Occupancy up to four stories NFPA-13R National Fire Alarm Code NFPA-72


Ordering Information Model Description Stock No.PS40-1 Pressure switch with one set SPDT contacts 1340403PS40-2 Pressure switch with two sets SPDT contacts 1340404 Hex Key 5250062 Cover Tamper Switch Kit 0090200 BVL Bleeder valve 1000018

4. Connect the wires to the appropriate terminal connections for the service intended. See Figures 2,4,5,6, and 8

Adjustment And Testing The operation of the pressure supervisory switch should be tested upon completion of installation and periodically thereafter in accordance with the applicable NFPA codes and standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently). Note: Testing the PS40 may activate other system connected devices. The use of a Potter BVL (see product bulletin 8900067 for details) is recommended to facilitate setting and testing of the PS40 pressure switch. When a BVL (bleeder valve) is used, the pressure to the switch can be isolated and bled from the exhaust port on the BVL without effecting the supervisory pressure of the entire system. See Fig. 3 The operation point of the PS40 Pressure Switch can be adjusted to any point between 10 and 60 PSI (0,7 - 4,11 BAR) by turning the adjustment knob(s) clockwise to raise the actuation point and counter clockwise to lower the actuation point. In the case of the PS40-2, both switches operate independent of each other. Each switch may be independently adjusted to actuate at any point acrosss the switch adjustment range. Initial adjustment can be made with a visual reference from the top of the adjustment knob across to the printed scale on the switch bracket. Final adjustments should be verifi ed with a pressure gauge.

MFG. #5400930 - REV D1/08





OUTGOING

INCOMING

DWG# 923-3

Fig. 1 Fig. 2

Fig. 3

GONGMOTORWATER

TESTBY-PASSWATER

VALVEOS & Y

VALVE

ALARMPRESSURESWITCH

PS10

CHECKVALVE

VALVECHECK

BVLVALVETESTBLEEDER

AIR LINESHUT-OFFVALVE

PS40

DWG. #924-1A

RBVSDRY PIPE

VALVE

Typical Connections

COM 1 2

EOLRTO FIRE ALARM PANEL

TO FIRE ALARM PANEL

EOLR

COM12

21COM

HIGH AIR

LOW AIR

PS40-1 PS40-2WITH NORMAL SYSTEM PRESSURE APPLIED LOW -TERMINAL 2 CLOSES ON PRESSURE DROP.

WITH NORMAL SYSTEM PRESSURE APPLIED HIGH - TERMINAL 1 WILL CLOSE ON PRESSURE INCREASE.

GROUND SCREWS

1/2" NPT

NOTE: To prevent leakage, apply teflon tape sealant to male threads only.

ADJUSTMENT KNOB

2.87[72.97]

4.22[107.19]

2.48[62.87]

3.78[95.89]

3.20[81.28]

1.60[40.64]

Fig. 4


Closing of any shutoff valves between thealarm check valve and the PS10 will renderthe PS10 inoperative. To comply with NFPA-72 any such valve shall be electrically supervised with a supervisory switch such as Potter Model RBVS.

MFG. #5400930 - REV D1/08




One Conduit WiringFig. 6

Fig. 8Fig. 9Removing Knockouts

NC

NC

NO

NO

C

C

C 1 2

C 1 2

LOW PRESSURE SWITCH

HIGH PRESSURE SWITCH

Changing Pressure


EOLR

TO FIRE ALARM PANELEOLR

TO FIRE ALARM PANEL

High Pressure Signal ConnectionFig. 5 Fig. 7

(With normal system pressure)

Engineer/Architect Specifi cations Pressure Type Waterfl ow Switch Pressure type supervisory switches; shall be a Model PS40 as manufactured by Potter Electric Signal Company, St. Louis, MO., and shall be installed on the fi re sprinkler system as shown and or specifi ed herein.Switches shall be provided with a 1/2" NPT male pressure connection to be connected into the air supply line on the system side of any shut-off valve. A Model BVL bleeder valve as supplied by Potter Electric Signal Company of St. Louis, MO., or equivalent shall be connected in line with the PS40 to provide a means of testing the operation of the supervisory switch. (See Fig. 3)The switch unit shall contain SPDT (Form C) switch(es). One switch shall be set to operate at a pressure decrease of 10 PSI (0,7 BAR) from normal. If two switches are provided, the second switch shall be set to operate at a pressure increase of 10 PSI (0,7 BAR) from normal.Switch contacts shall be rated at 10.1 Amps at 125/250VAC and 2.0 Amps at 30VDC. The units shall have a maximum pressure rating of 300 PSI (20,68 BAR) and shall be adjustable from 10 to 60 PSI (0,7 to 4,1 BAR).Pressure switches shall have two conduit entrances, one for each individual switch compartment to facilitate the use of dissimilar voltages for each individual switch.The cover of the pressure switch shall be zinc die-cast with rain lip and shall attach with one tamper resistant screw. The pressure switch shall be suitable for indoor or outdoor service with a NEMA-4/IP55 rating.The pressure switch shall be UL, ULC, and CSFM listed, FM and LPC approved and NYMEA accepted.

•Installation must be performed by qualifi ed personnel and in accordance with all national and local codes and ordinances.•Shock hazard. Disconnect power source before servicing. Serious injury or death could result.•Read all instructions carefully and understand them before starting installation. Save instructions for future use. Failure to read and understand instructions could result in improper operation of device resulting in serious injury or death.•Risk of explosion. Not for use is hazardous locations. Serious injury or death could result.

•Do not tighten by grasping the switch enclosure. Use wrenching fl ats on the bushing only. Failure to install properly could damage the switch and cause improper operation resulting in damage to equipment and property.•To seal threads, apply Tefl on tape to male threads only. Using joint compounds or cement can obstruct the pressure port inlet and result in improper device operation and damage to equipment.•Do not over tighten the device, standard piping practices apply.



MFG. #5400932 - REV D1/08


PS100-2PRESSURE TYPE FLOW SWITCH

InstallationThe Potter PS100 Pressure Actuated Switches are designed primarily to detect a decrease from normal system pressure in automatic fi re sprinkler systems. A typical application is for an alarm initiating device that is used on a wet system with excess pressure. The PS100-2 has two SPDT switches factory set to operate on a pressure drop at 90 PSI (6,2 BAR). See section heading Adjustments and Testing if other than factory set point is required.

1. Connect the PS100 to the system side of any shutoff or check valve. 2. Apply Tefl on tape to the threaded male connection on the device. (Do not use pipe dope) 3. Device should be mounted in the upright position. (Threaded connection down) 4. Tighten the device using a wrench on the fl ats on the device.

Wiring Instructions 1. Remove the tamper resistant screw with the special key provided. 2. Carefully place a screwdriver on the edge of the knockout and sharply apply a force suffi cient to dislodge the knockout plug. See Fig. 93. Run wires through an approved conduit connector and affi x the connector to the device. A NEMA-4 rated conduit fi tting is required for outdoor use.4. Connect the wires to the appropriate terminal connections for the service intended. See Figures 2,4,5,7, and 8. See Fig. 6 for two switch one conduit wiring.

(UL, cUL, and CSFM Listed, FM and LPC Approved, NYMEA Accepted, CE Marked Pending)Dimensions: 3.78" (9.6cm)W x 3.20" (8.1cm)D x 4.22" (10.7cm)HConduit Entrance: Two knockouts provided for 1/2" conduit. Individual switch compartments and ground screw suitable for dissimilar voltages. Enclosure: Cover- Die-cast with textured red powdercoat fi nish, single cover screw and rain lip. Base- Die-cast Pressure Connection: Nylon 1/2" NPT maleFactory Adjustment: Operates on decrease at 90 PSI (6,2 BAR)Pressure Range: 25-175 PSI (1,7 - 12,1 BAR)Differential: Typical 2 lbs. at 25 PSI (,14 at 1,7 BAR)

8 lbs at 175 PSI (,55 at 12,1 BAR)Maximum System Pressure: 300 PSI (20,68 BAR)Switch Contacts: Two SPDT (Form C) 10.1 Amps at 125/250VAC, 2.0 Amps at 30VDCEnvironmental Specifi cations: NEMA 4/IP55 Rated Enclosure - indoor or outdoor when

used with NEMA-4 conduit fi ttings. Temperature range: -40°F to 140°F (-40°C to 60°C)Tamper: Cover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device. For optional cover tamper switch kit, order Stock No. 0090200. See bulletin #5401200 PSCTSK.Service Use: Automatic Sprinkler NFPA-13 One or two family dwelling NFPA-13D Residential Occupancy up to four stories NFPA-13R National Fire Alarm Code NFPA-72


Adjustment And TestingThe operation of the waterfl ow pressure switch should be tested upon completion of installation and periodically thereafter in accordance with the applicable NFPA codes and standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently).

Note: Testing the PS100 may activate other system connected devices. The use of a Potter BVL (see product bulletin 8900067 for details) is recommended to facilitate setting and testing of the PS100 pressure switch. When a BVL (bleeder valve) is used, the pressure to the switch can be isolated and bled from the exhaust port on the BVL without effecting the supervisory pressure of the entire system. See Fig. 3

The operation point of the PS100 Pressure Switch can be adjusted to any point between 25 and 175 PSI (1,7 - 12,1 BAR) by turning the adjustment knob(s) clockwise to raise the actuation point and counter clockwise to lower the actuation point. Both switches operate independent of each other. Each switch may be independently adjusted to actuate at any point acrosss the switch adjustment range. Initial adjustment can be made with a visual reference from the top of the adjustment knob across to the printed scale on the switch bracket. Final adjustments should be verifi ed with a pressure gauge.

Ordering Information Model Description Stock No.PS100-2 Pressure switch with two SPDT contacts 1341005 Hex Key 5250062 Cover Tamper Switch Kit 0090200BVL Bleeder valve 1000018

MFG. #5400932 - REV D1/08





OUTGOING

INCOMING

DWG# 923-3

Fig. 1 Fig. 2

Fig. 3

GROUND SCREWS

1/2" NPT

PS100 PRESSURE

DROP ALARM SWITCH

SHUT-OFF VALVE

BLEEDER TEST VALVE

BVL

CHECK VALVE

EXCESS PRESSURE

PUMP

PS120 PRESSURE SUPERVISORY SWITCH

BLEEDER TEST VALVE

BVL

DWG #925-1A

OS & Y VALVE

OS & Y VALVE

CHECK VALVE

WATER SUPPLY


ADJUSTMENT KNOB

2.87[72.97]

4.22[107.19]

2.48[62.87]

3.78[95.89]

3.20[81.28]

1.60[40.64]

Fig. 4

BELL

COM 1 2COM 1 2


POSITIVE DC OR HOT AC

NEGATIVE DC OR NEUTRAL AC

LINE LOAD

OPEN CIRCUIT CLOSES ON ALARM RING A LOCAL BELLWITH NORMAL SYSTEM PRESSURE APPLIED -TERMINAL 2 CLOSES ON PRESSURE DROP.


Typical Connections



Waterfl ow Signal Connection

EOLR

TO FIRE ALARM PANEL

Fig. 5 Fig. 7Local Bell For Waterfl ow Connection

POSITIVE DCOR HOT AC

BELL

NEGATIVE DCOR NEUTRAL AC

LINE LOAD

MFG. #5400932 - REV D1/08



Fig. 8 Fig. 9Removing KnockoutsChanging Pressure (with normal system pressure)

NC

NO

C

C 1 2

SWITCH ONE SWITCH TWO

NC

NO

C

C 1 2

Engineer/Architect Specifi cations Pressure Type Waterfl ow Switch Pressure type waterfl ow switches; shall be a Model PS100-2 as manufactured by Potter Electric Signal Company, St. Louis, MO., and shall be installed on the fi re sprinkler system as shown and or specifi ed herein.Switches shall be provided with a ½" NPT male pressure connection to be connected to the excess pressure supply line on the system side of any shut-off or check valve. A Model BVL bleeder valve as supplied by Potter Electric Signal Company of St. Louis, MO., or equivalent shall be connected in line with the PS100-2 to facilitate testing of the PS100-2.Pressure type waterfl ow switches shall have a maximum service pressure rating of 300 PSI (20,68 BAR) and shall be factory adjusted

•Installation must be performed by qualifi ed personnel and in accordance with all national and local codes and ordinances.•Shock hazard. Disconnect power source before servicing. Serious injury or death could result.•Read all instructions carefully and understand them before starting installation. Save instructions for future use. Failure to read and understand instructions could result in improper operation of device resulting in serious injury or death.•Risk of explosion. Not for use is hazardous locations. Serious injury or death could result.

•Do not tighten by grasping the switch enclosure. Use wrenching fl ats on the bushing only. Failure to install properly could damage the switch and cause improper operation resulting in damage to equipment and property.•To seal threads, apply Tefl on tape to male threads only. Using joint compounds or cement can obstruct the pressure port inlet and result in improper device operation and damage to equipment.•Do not over tighten the device, standard piping practices apply.

to operate on a pressure decrease of 10 PSI (14,5 BAR).Pressure switch shall have two Form C contacts, switch contact rating at 10.1 Amps at 125/250 VAC. 2.0 Amps at 30 VDC. Pressure type waterfl ow switches shall have two conduit entrances, one for each individual switch compartment to facilitate the use of dissimilar voltages for each individual switch.The cover of the pressure type waterfl ow switch shall be zinc die-cast with rain lip and shall attach with one tamper resistant screw. The pressure type waterfl ow switch shall be suitable for indoor or outdoor service with a NEMA-4/IP55 rating. The pressure type waterfl ow switch shall be UL, ULC, and CSFM listed, FM and LPC approved and NYMEA accepted.

For waterfl ow or low pressure use:COM and terminal 2

MFG. #5400933 - REV D1/08



Installation The Potter PS120 Series Pressure Actuated Switches are designed primarily to detect an increase and/or decrease from normal system pressure in automatic fi re sprinkler systems. Typical applications are: Wet pipe systems with excess pressure, pressure tanks, air supplies, and water supplies. The PS120 switch is factory set for 120 PSI (8,3 BAR) normal system pressure. The switch marked with the word LOW is set to operate at a pressure decrease of 10 PSI (0,7 BAR) at 110 PSI (7,6 BAR). The switch marked with the word HIGH is set to operate at a pressure increase of 10 PSI (0,7 BAR) at 130 PSI (9 BAR). See section heading Adjustments and Testing if other than factory set point is required.1. Connect the PS120 to the system side of any shutoff or check valve. 2. Apply Tefl on tape to the threaded male connection on the device. (Do not use pipe dope) 3. Device should be mounted in the upright position. (Threaded connection down) 4. Tighten the device using a wrench on the fl ats on the device.

Wiring Instructions 1. Remove the tamper resistant screw with the special key provided. 2. Carefully place a screwdriver on the edge of the knockout and sharply apply a force suffi cient to dislodge the knockout plug. See Fig. 9 3. Run wires through an approved conduit connector and affi x the connector to the device. A NEMA-4 rated conduit fi tting is required for outdoor use.


Service Use:Automatic Sprinkler NFPA-13

One or two family dwelling NFPA-13D Residential Occupancy up to four stories NFPA-13R National Fire Alarm Code NFPA-72

(UL, cUL, and CSFM Listed, FM and LPC Approved, NYMEA Accepted, CE Marked Pending)Dimensions: 3.78" (9.6cm)W x 3.20" (8.1cm)D x 4.22" (10.7cm)H Enclosure: Cover- Die-cast with textured red powdercoat fi nish, single cover screw and rain lip. Base- Die-cast Pressure Connection: Nylon 1/2" NPT male

Cover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device. For optional cover tamper switch kit, order Stock No. 0090200. See bulletin #5401200 PSCTSK.

Switch Contacts: SPDT (Form C) 10.1 Amps at 125/250VAC, 2.0 Amps at 30VDC One SPDT in PS120-1, Two SPDT in PS120-2Environmental Specifi cations: NEMA 4/IP55 Rated Enclosure - indoor or outdoor when used with NEMA 4 conduit fi ttings. Temperature range: -40°F to 140°F (-40°C to 60°C)

Pressure Range: 25-175 PSI (1,7 - 12,1 BAR)Differential: Typical 2 lbs. at 25 PSI (0,14 at 1,7 BAR)

8 lbs at 175 PSI (55 at 12,1 BAR) Maximum System Pressure: 300 PSI (20,68 BAR)

Factory Adjustment: PS120-1 operates on decrease at 110 PSI (7,6 BAR)PS120-2 operates in increase at 130 PSI (9 BAR) and on decrease at 110 PSI (7,6 BAR)

Conduit Entrance: Two knockouts provided for 1/2" conduit. Individual switch compartments and ground screw suitable for dissimilar voltages

Tamper:

4. Connect the wires to the appropriate terminal connections for the service intended. See Figures 2,4,5,6, and 8. See Fig. 7 for two switch one conduit wiring.Adjustment And Testing The operation of the pressure supervisory switch should be tested upon completion of installation and periodically thereafter in accordance with the applicable NFPA codes and standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently). Note: Testing the PS120 may activate other system connected devices. The use of a Potter BVL (see product bulletin 8900067 for details) is recommended to facilitate setting and testing of the PS120 pressure switch. When a BVL (bleeder valve) is used, the pressure to the switch can be isolated and bled from the exhaust port on the BVL without effecting the supervisory pressure of the entire system. See Fig. 3 The operation point of the PS120 Pressure Switch can be adjusted to any point between 25 and 175 PSI (1,7 - 12,1 BAR) by turning the adjustment knob(s) clockwise to raise the actuation point and counter clockwise to lower the actuation point. In the case of the PS120-2, both switches operate independent of each other. Each switch may be independently adjusted to actuate at any point acrosss the switch adjustment range. Initial adjustment can be made with a visual reference from the top of the adjustment knob across to the printed scale on the switch bracket. Final adjustments should be verifi ed with a pressure gauge.

Ordering Information Model Description Stock No.PS120-1 Pressure switch with one set 1341203 SPDT contacts PS120-2 Pressure switch with two sets 1341204 SPDT contacts Hex Key 5250062 Cover Tamper Switch Kit 0090200BVL Bleeder valve 1000018

MFG. #5400933 - REV D1/08





OUTGOING

INCOMING

DWG# 923-3

Closing of any shutoff valves between the alarm check valve andthe PS10 will render the PS10 inoperative. To comply with NFPA-72 any such valve shall be electrically supervised with a supervisory switch such as Potter Model RBVS.

Fig. 1 Fig. 2

Fig. 3 PS120

PRESSURE SUPERVISORY

SWITCHBLEEDER TEST VALVEBVL

WET SYSTEM ALARM CHECK VALVE

PS10 WATERFLOW

ALARM SWITCH

WATER MOTOR GONG

RBVS

RBVS

CHECK VALVE

EXCESS PRESSURE PUMP OS & Y

VALVE

WATER BY-PASS TEST VALVE

RBVS

DWG #926-1A

Typical Connections

COM 1 2


TO FIRE ALARM PANEL

EOLR

COM12

21COM

HIGH AIR

LOW AIR

PS120-1 PS120-2

WITH NORMAL SYSTEM PRESSURE APPLIED LOW -TERMINAL 2 CLOSES ON PRESSURE DROP.

WITH NORMAL SYSTEM PRESSURE APPLIED HIGH - TERMINAL 1 WILL CLOSE ON PRESSURE INCREASE.

GROUND SCREWS

1/2" NPT


ADJUSTMENT KNOB

2.87[72.97]

4.22[107.19]

2.48[62.87]

3.78[95.89]

3.20[81.28]

1.60[40.64]

Fig. 4


MFG. #5400933 - REV D1/08





Fig. 8Fig. 9Removing Knockouts

NC

NC

NO

NO

C

C

C 1 2

C 1 2

LOW PRESSURE SWITCH

HIGH PRESSURE SWITCH

Changing Pressure


EOLR

TO FIRE ALARM PANELEOLR

TO FIRE ALARM PANEL

High Pressure Signal ConnectionFig. 5 Fig. 7

(With normal system pressure)

Engineer/Architect Specifi cations Pressure Type Waterfl ow Switch Pressure type supervisory switches; shall be a Model PS120 as manufactured by Potter Electric Signal Company, St. Louis, MO., and shall be installed on the fi re sprinkler system as shown and or specifi ed herein.Switches shall be provided with a ½" NPT male pressure connection to be connected into the air supply line on the system side of any shut-off valve.A Model BVL bleeder valve as supplied by Potter Electric Signal Company of St. Louis, MO., or equivalent shall be connected in line with the PS120 to provide a means of testing the operation of the supervisory switch. (See Fig. 3)The switch unit shall contain SPDT (Form C) switch(es). One switch shall be set to operate at a pressure decrease of 10 PSI (0,7 BAR) from normal. If two switches are provided, the second switch shall be set to operate at a pressure increase of 10 PSI (0,7 BAR) from normal.Switch contact shall be rated at 10.1 Amps at 125/250VAC and 2.0 Amps at 30VDC. The units shall have a maximum pressure rating of 300 PSI (20,68 BAR) and shall be adjustable from 25 to 175 PSI (1,7 to 12,1 BAR).

•Installation must be performed by qualifi ed personnel and in accordance with all national and local codes and ordinances.•Shock hazard. Disconnect power source before servicing. Serious injury or death could result. •Read all instructions carefully and understand them before starting installation. Save instructions for future use. Failure to read and understand instructions could result in improper operation of device resulting in serious injury or death.•Risk of explosion. Not for use is hazardous locations. Serious injury or death could result.

•Do not tighten by grasping the switch enclosure. Use wrenching fl ats on the bushing only. Failure to install properly could damage the switch and cause improper operation resulting in damage to equipment and property. •To seal threads, apply Tefl on tape to male threads only. Using joint compounds or cement can obstruct the pressure port inlet and result in improper device operation and damage to equipment.•Do not over tighten the device, standard piping practices apply.



WFSR-FWATERFLOW ALARM SWITCH

WITH RETARD

MKT. #8810009 - REV TMFG. #5400987 - 10/07

PAGE 1 OF 2PRINTED IN USA

Waterfl ow Alarm Switch With Retard For Supervision Of Wet Alarm Check Valve The Model WFSR-F is a pressure operated switch with an adjustable, instantly recycling pneumatic retard to prevent false alarms due to water pressure variation. The WFSR-F is connected into the alarm port of a wet sprinkler system alarm check valve (see " WARNING", page 2).

InstallationA male 1/2" NPT pipe fi tting is provided for connection to the alarm port of the alarm check valve. No additional mounting or support is

UL, cUL and CSFM Listed, FM Approved and NYMEA Accepted, CE Marked, VdS ApprovedDimensions: 5 9/16"H x 3 1/2"W x 5 7/8"D (14,1cm H x 8,9cm W x 14,9cm D)Weight: 1.5 lbs. (3,3 kg.)Enclosure: Cover - Die-cast with textured red powdercoat fi nish Base - Die-cast aluminumPressure Connection: 1/2" Male NPTPressure Adjustments: Factory adjusted to operate between

5 and 8 PSI (0.35 and 0,55 BAR) on rising pressure

Maximum system pressure: 175 PSI (12,1 BAR)Contact Ratings: Two Sets of SPDT (Form C) 15.0 Amps at 125/250VAC 2.0 Amps at 30VDC ResistiveConduit Entrances: Two knockouts provided for 1/2" conduitEnvironmental Specifi cations: 40°F to 120°F (4,5°C to 49°C) NEMA 4 Enclosure - when used

with proper conduit fi ttingsService Use: Automatic Sprinkler NFPA-13 One or two family dwelling NFPA-13D Residential occupancy up to four stories NFPA-13R National Fire Alarm Code NFPA-72Tamper: Cover incorporates tamper resistant fasteners that require a special key for removal. One key is supplied with each device. For optional cover tamper switch kit, order Stock No. 0090018.


Fig. 2 Typical Electrical Connections

Note: For supervised circuits see “Switch Terminal Connections” drawing and caution note (Fig. 4).

2 SETS OF NORMALLY OPEN CONTACTS

CLOSE ON ALARM

THE N.C. AND N.O. MARKINGS ON THE SWITCH ARE FOR AN ALARM

CONDITION.

THE CONTACTS ARE REVERSED WHEN THE DEVICE IS IN THE

NORMAL CONDITION.

WATERFLOW ZONE ON FIRE PANEL

EOLR FROM FIRE PANEL

POSITIVE DC OR HOT AC

NEGATIVE DC OR NEUTRAL AC

DWG# 761-2

BELL

COM NO NC

COM NO NC

COM NO NC

COM NO NC

EOLR

Stock number - 1010080

This device is not intended for applications in explosive environments.

Fig. 1 WFSR-FTO SPRINKLERS

FROM WATER SUPPLY

BY-PASS TEST VALVE

RBVS

WFSR-F

TO DRAIN

RETARD CHAMBER

DWG# 987-1A

required. Allow 5" (12,7cm) to the front of the unit for removal of the cover. Install with the pressure connection down.

TestingOperation of the unit is checked by opening the by-pass test valve or inspector's test valve. The frequency of the inspection and testing for the Model WFSR-F and its associated protective monitoring system should be in accordance with applicable NFPA Codes and Standards and/or authority having jurisdiction (manufacturer recommends quarterly or more frequently).

WFSR-FWATERFLOW ALARM SWITCH

WITH RETARD

MKT. #8810009 - REV TMFG. #5400987 - 10/07

PAGE 2 OF 2PRINTED IN USA

Switch Terminal Connections Clamping Plate Terminal

Fig. 4Fig. 3Retard Adjustment:To change time turn knob (either direction) for desired time delay. Use the minimum amount of retard necessary to prevent false alarms, a “B” setting is usually adequate for this. Factory set at “B”.

APPROX. RETARD SETTINGS (IN SEC.)0 A B C D E0 10-25 20-40 35-55 50-70 60-90

OUTGOING

INCOMING

DWG# 923-3

Fig. 5 Typical Wet System

DO NOT LEAVE COVER OFF FOR EXTENDED PERIOD OF TIME

DWG# 987-30


Use tefl on tape sealant only. Apply only to male threads of connectors.

Use of pipe cement voids warranty as this material may obstruct pressure aperture resulting in loss of alarm signal.

Device must be installed before any shut off valve on alarm port line unless it is supervised by a supervisory switch such as Potter Model RBVS.

The system should be tested on a quarterly basis or more frequently to insure proper operation.

Due to the possibility of unintended discharges caused by pressure surges, trapped air, or short retard times, waterfl ow switches that are monitoring wet pipe sprinkler systems should not be used as the sole initiating device to discharge AFFF, deluge, or chemical suppression systems.

RISER TOSPRINKLER

HEADS

OPTION 1 OPTION 2

WFSR-FWATERFLOW

DEVICEWITH RETARD

PS10WATERFLOW

PRESSURE SWITCH

TO WATERMOTOR GONG

SHUTOFF(OPEN)

PETCOCK(OPEN)

ALARM LINESHUTOFF VALVE,

SUPERVISED(OPEN)

WATER PRESSURE GAUGE(SYSTEM PRESSURE)

(OPEN)

CHECK VALVEUSE TO BUILD

SMALL EXCESSSURGES

BY-PASS LINE

WATER PRESSURE GAUGE(CITY PRESSURE) (OPEN)

CHECK

RBVS

DRAINVALVE

(CLOSED)

WATER BY-PASSTEST VALVE

(CLOSED)

OSYSUTAMPERDEVICE

OSY CONTROL VALVE(OPEN)

RETARDCHAMBER

PETCOCK(OPEN)

DRIPCUP

CHECKVALVE

STRAINER

DWG. #8700023-2A

DRAINPIPEWATER PRESSURE

FROM CITY MAINS

MODEL PS10EXFEXPLOSION PROOF PRESSURE SWITCH

PRINTED IN USA MKT. #5401029 REV K7/07

PAGE 1 OF 3

Installation And Test ProcedureThe Potter PS10EXF Pressure Actuated Switch is designed for the detection of a waterfl ow condition in automatic fi re sprinkler systems located in hazardous locations classifi ed as shown above, of particular designs such as wet systems with alarm check valves or dry pipe systems. It may also be used to provide a low pressure supervisory signal. It can be adjusted to operate on pressure between 28 kPA/.28 BAR (4 PSI) and 138 kPA/1.38 BAR (20 PSI).Mounting: Device should be mounted in upright position (threaded connection down).Testing: The operation of the pressure alarm switch and its associated protective system should be tested upon completion of installation and periodically thereafter in accordance with the applicable codes and standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently). Wet System METHOD 1: When using PS10EXF and control unit with retard, connect the PS10EXF into alarm port piping on the input side of retard chamber and electrically connect PS10–EXF to control unit that provides a retard to compensate for surges. Insure that no shut off valves are present between the alarm check valve and the PS10EXF.METHOD 2: When using the PS10EXF for local bell application or with a control that does not provide a retard feature, the PS10EXF

must be installed on the alarm outlet side of the retard chamber of the sprinkler system. Testing: Accomplished by opening the inspector's endofline test valve. Allow time to compensate for system or control retard. Wet System With Excess Pressure: Connect the PS10EXF into alarm port piping extending from alarm check valve. Retard provisions are not required. Insure that no shut off valves are present between the alarm check valve and the PS10EXF.Testing: Accomplished by opening the water bypass test valve or the inspector's endofline test valve. When using endofline test, allow time for excess pressure to bleed off.Dry System: Connect the PS10EXF into the piping that extends from the intermediate chamber of the dry sprinkler valve. Install on the outlet side of the inline check valve of the alarm port piping. Insure that no shut off valves are present between the dry sprinkler valve and the PS10EXF.

Testing: Accomplished by opening the water bypass test valve.

CENELEC, DEMKO NO. D 03 Atex 0311298, EN50018, EN50014, FM ApprovedDimensions: 152mm Dia. x 178mm HEnclosure: Cast aluminumPressure Connection: 1/2" NPT male brass fi ttingConduit Entrance: 1/2" NPT female conduit opening Factory Adjustment: Both switches operate on pressure increase at: 41 ±7 kPA/.41 ±.07 BAR (6 ±1 PSI) Both switches operate on pressure decrease at: 34 ±7 kPA/.34 ±.07 BAR (5 ±1 PSI)Maximum Differential: 7 kPA/.07 BAR (1 PSI)Maximum Proof Pressure: 1724 kPA/17.24 BAR (250 PSI) Switch Contacts: Two Sets of SPDT (Form C) 15.0 Amps at 125/250 VAC 2.0 Amps at 30 VDCEnvironmental Specifi cations: For use in hazardous locations classifi ed asEEx d IIB T6 (IP66) NEMA 4 and 9 Rated Enclosure Temperature Range: 40°F to 140°F (40°C to 60°C)

PS10EXF Stock Number 1350001

Potter Electric Signal Company • 2081 Craig Road, St. Louis, MO, 631464161 • Phone: 8003253936/Canada 8888821833 • www.pottersignal.com

Model Description Stock No.PS10EXF Pressure switch with 2 sets of 1350001 contacts (SPDT) Hex Key (For cover removal) 5250074 Hex Key (For pressure adjustment access) 5250073

The above tests may also activate any other circuit closer or water motor gongs that are present on the system.

www.pottersignal.com



PAGE 2 OF 3


Pressure Switch Termination

Closing of any shutoff valves between the alarm check valve and the PS10EXF will render the PS10EXF inoperative. To comply with NFPA72 any such valve shall be electrically supervised with a supervisory switch such as Potter Model BVS.





PAGE 3 OF 3

Note: To prevent leakage, apply tefl on tape sealant to male threads only.

Use of pipe joint cement may result in obstruction of the aperature and loss of signal.

When this device is to be installed in an area that is classifi ed as “hazardous”, the person responsible for safety in the area should be contacted to determine if the tools and operations required for the installation of the device and associated components are permitted in the area. To reduce the risk of ignition of hazardous atmospheres, disconnect supply circuits before opening cover. Keep cover tight while circuits are live. Cover screws must be torqued to a minimum of 2 Nm.

Engineer/Architect Specifi cationsAir pressure supervisory switch shall be a Model PS40EXF as manufactured by Potter Electric Signal Co. of St. Louis, Mo. U.S.A. and shall be installed on the sprinkler systems as shown on the drawings and/or as specifi ed herein.Switches shall be provided with a 1/2" NPT male pressure connection to be connected into the air supply line on the system side of any shutoff valve. A Model BVL bleeder valve as supplied by Potter Electric Signal Co. of St. Louis, Mo. U.S.A., or equivalent, shall be connected between the product and the air supply to provide a means of testing the operation of the supervisory switch.The switch unit shall contain two SPDT (Form C) switches. One switch shall operate at a pressure decrease of 69 kPA/.69 BAR (10 PSI) from normal. The second switch shall operate at a pressure increase of 69 kPA/.69 BAR (10 PSI) from normal. Switch contacts shall be rated at 15.0 Amps at 125/250 VAC and 2.0 Amps at 30 VDC. The units shall have a maximum pressure rating of 1724 kPA/17.24 BAR (250 PSI) and shall be adjusted from 69kPA/.69 BAR (10 PSI) to 1207 kPA/12.07 BAR (175 PSI).The switch housing shall be weatherproof and oil resistant.



PAGE 1 OF 3

The Potter PS40EXF is a pressure actuated switch designed primarily to detect a 69 kPA/.69 BAR (10 PSI) increase and/or decrease from normal system pressure in automatic fi re sprinkler systems located in hazardous locations classifi ed as shown above.Typical applications are air pressure supervision in dry pipe systems and pressure supervision of pressure tanks, air supply or water supply.

Installation And Test ProcedureMounting: Device should be mounted in upright position (threaded connection down). Requires NEMA Type 4 conduit hub for outdoor installations.Testing: The operation of the pressure supervisory switch and its associated protective system should be tested upon completion of installation and periodically thereafter in accordance with the applicable codes and standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently)

Dry System: Connect PS40EXF in air supply line on the system side of any shutoff or check valve.Provision for testing the unit can be accomplished with the installation of a Potter Bleeder Valve (Model BVL) in the line to the PS40EXF.

CENELEC, DEMKO NO. D 03 Atex 0311298, EN50018,

EN50014, FM Approved

Dimensions: 152mm Dia. x 178mm H

Enclosure: Cast aluminum

Pressure Connection: 1/2" NPT male brass fi ttingConduit Entrance: 1/2" NPT female conduit opening

Factory Adjustment: One switch operates on decrease at 207 kPA/2.07 BAR

(30 PSI) and one switch operates on increase at

345 kPA/3.45 BAR (50 PSI).

Pressure Range: 69 kPA/.69 BAR (10 PSI) to 1207 kPA/12.07 BAR (175 PSI)

Maximum Differential (Approx.): 14 kPA/.14 BAR (2 PSI) at 138 kPA/1.38 BAR (20 PSI)

34 kPA/.34 BAR (5 PSI) at 1207 kPA/12.07 BAR (175 PSI)

Maximum Proof Pressure: 1724 kPA/17.24 BAR (250 PSI)

Switch Contacts: Two Sets of SPDT (Form C)

15.0 Amps at 125/250 VAC

2.0 Amps at 30 VDC

Environmental Specifi cations: For use in hazardous locations classifi ed asEEx d IIB T6 (IP66)

NEMA 4 and 9 Rated Enclosure

Temperature Range: 40°F to 140°F (40°C to 60°C)

PS40EXF Stock Number 1350002


Model Description Stock No.PS40EXF Pressure switch with 2 sets of 1350002 contacts (SPDT) BVL Bleeder Valve 1000018 Hex Key (For cover removal) 5250074 Hex Key (For pressure adjustment access) 5250073

Testing the PS40EXF may activate other system connected devices.




PAGE 2 OF 3

Typical Sprinkler Application Dry System

Typical Electrical Connections

Note: High switch changes with pressure increase. Low switch changes with pressure decrease.


Typical Electrical Connections



PAGE 3 OF 3

NOTE: Switches are shown in standby condition with “normal” pressure applied. Switch #1 (high) changes with pressure increase. Switch #2 (low) changes with pressure decrease.

Pressure Switch Termination

Field Adjustments The operating point of the switches on the PS40EXF can be adjusted to any point between 69 kPA/.69 BAR (10 PSI) and 1207 kPA/12.07 BAR (175 PSI) by turning the adjustment knob(s) clockwise to raise the actuation point, and counterclockwise to lower the actuation point. The two switches operate completely independently of one another, and each switch may be adjusted to actuate at any point the system requires. Final adjustment should be made with a pressure gauge.

NOTE: To prevent leakage, apply tefl on tape sealant to male threads only.

Use of pipe joint cement may result in obstruction of the aperature and loss of signal.

When this device is to be installed in an area that is classifi ed as “hazardous”, the person responsible for safety in the area should be contacted to determine if the tools and operations required for the installation of the device and associated components are permitted in the area. To reduce the risk of ignition of hazardous atmospheres, disconnect supply circuits before opening cover. Keep cover tight while circuits are live. Cover screws must be torqued to a minimum of 2 Nm.

Engineer/Architect Specifi cationsAir pressure supervisory switch shall be a Model PS40EXF as manufactured by Potter Electric Signal Co. of St. Louis, Mo. U.S.A. and shall be installed on the sprinkler systems as shown on the drawings and/or as specifi ed herein.Switches shall be provided with a 1/2" NPT male pressure connection to be connected into the air supply line on the system side of any shutoff valve. A Model BVL bleeder valve as supplied by Potter Electric Signal Co. of St. Louis, Mo. U.S.A., or equivalent, shall be connected between the product and the air supply to provide a means of testing the operation of the supervisory switch.The switch unit shall contain two SPDT (Form C) switches. One switch shall operate at a pressure decrease of 69 kPA/.69 BAR (10 PSI) from normal. The second switch shall operate at a pressure increase of 69 kPA/.69 BAR (10 PSI) from normal. Switch contacts shall be rated at 15.0 Amps at 125/250 VAC and 2.0 Amps at 30 VDC. The units shall have a maximum pressure rating of 1724 kPA/17.24 BAR (250 PSI) and shall be adjusted from 69kPA/.69 BAR (10 PSI) to 1207 kPA/12.07 BAR (175 PSI).The switch housing shall be weatherproof and oil resistant.

PRINTED IN USA MKT. #8910218 REV J MFG.#5401060 11/03

ADPS ADJUSTABLE DEADBAND

PRESSURE SWITCH

PAGE 1 OF 2

DescriptionThe Model ADPS is an Adjustable Deadband Pressure Switch with independent set and reset points which are adjustable throughout the entire operating range of the switch. The minimum deadband (minimum span between set and reset points) may be obtained at any point in the operating range of the switch. A change in pressure greater than the high setting will reposition the switch mechanism to open or close a single snapaction electrical switch.This control device is designed for use as an operating control in applications sensing air, water, or any fl uid not harmful to the pressure connection, diaphragm or nitrile pressuresealing oring. The instances where an operating control would result in personal injury and/or loss of property, it is the responsibility of the installer to add devices (safety, limit controls) that protect against, or systems (alarm, supervisory systems) that warn of control failure.This device is not intended for applications in explosive environments or use with hazardous fl uids.Mounting and InstallationThe Model ADPS is typically mounted in an upright position on a fl at surface by two 1/4" screws through the mounting fl anges on the base or by two 1/420 screws into the back of the base. See Fig. 1 for mounting dimensions. Locate the switch where vibration, shock, and ambient temperature fl uctuations are minimal. To avoid damage to the switch, always hold a wrench on the pressure connection hex when tightening pressure connections. Never tighten the pressure connection by turning the switch housing into the fi tting.

Listings/Approvals• UL Standard 508 Guide (NKPZ) and CSA Standard C22.2 No. 14M Class (321106) for Pressure Operated Industrial Control Equipment.• UL Standard 873 Guide (XAPX) and CSA Standard C22.2 No. 24 Class (481302) for Temperature Indicating and Regulating Equipment. • CE MarkedAmbient/Media Temperature Range 4°F to 180°F (20°C to 82°C)Construction • NEMA Type 4X enclosure for indoor or outdoor use. (To maintain 4X rating, use appropriate Type 4 conduit hub.) • Forged brass or 316 S.S. pressure connections• Aluminum Diecast base with Polymer enclosure • Beryllium Copper diaphragm (Stainless steel isolator diaphragm included for protection of beryllium copper diaphragm on models with stainless steel pressure connection.) • Nitrile Pressure Sealing OringSwitch Contact Snapaction SPDT (Form C) 15 Amps at 125/250/480 VAC* 1/8 HP at 125 VAC 1/4 HP at 250 VAC * Noninductive loads only

Adjustable Operating Range

Minimum Deadband

Proof Pressure

Factory Setting

25300 PSIG 12 PSIG 400 PSIG 90/60 PSIG

Direct control of motors with HP ratings greater than those shown could damage the ADPS switch, resulting in sprinkler system damage and unintentional water fl ow. The installation of a pressure relief valve set at or below the systems maximum operating pressure is recommended.

See Model Options on page 2.


Fig. 1

WiringUse properly rated temperature supply wire for the anticipated service temperature. Make all electrical connections in accordance with the National Electrical Code and local regulations. A wiring check may be performed by manually actuating the switch actuator on the side of the snapaction switch inside the enclosure. (See Fig. 3)

Fig. 2

Do not loosen or remove the two (2) screws that secure the switch to the switch mounting bracket.


ADPS ADJUSTABLE DEADBAND

PRESSURE SWITCH

PRINTED IN USA MKT. #8910218 REV J MFG.#5401060 11/03

PAGE 2 OF 2

AdjustmentsThe two thumb adjustment dials, accessible through the enclosure cover, are used to adjust the set point and reset point of the switch. The dial scales and pointer may be used to give an indication of the low and high set points.The high setting adjustment dial is calibrated for increasing pressure. The low setting adjustment dial is calibrated for decreasing pressure. For best accuracy, make the fi nal adjustments with a pressure gauge at the actual working media pressure and temperature encountered in the application.

The minimum deadband (minimum span between set and reset points) may be obtained at any point in the operating range of the switch. When the desired settings are obtained, replace the adjustment cover. The adjustment cover and enclosure cover can be made tamper resistant by a single sealing wire inserted through the hole in the locking bar. The repeatability of the set and reset points is typically ± 1% of the operating range.

Ordering InformationStock Number Model Number Adjustable

Operating RangeMinimum Deadband

Proof Pressure

Pressure Connection Diaphragm

1370010 ADPS3001B 25300 PSIG 12 PSIG 400 PSIG 1/4" NPT Brass Beryllium Copper1370020 ADPS3001S 25300 PSIG 12 PSIG 400 PSIG 1/4" NPT 316 S.S. Beryllium Copper w/ 316 S.S. Isolator1370030 ADPS3002S 25300 PSIG 12 PSIG 400 PSIG 3/8" NPT 316 S.S. Beryllium Copper w/ 316 S.S. Isolator1370040 ADPS6001B 50600 PSIG 25 PSIG 650 PSIG 1/4" NPT Brass Beryllium Copper1370050 ADPS6001S 50600 PSIG 25 PSIG 650 PSIG 1/4" NPT 316 S.S. Beryllium Copper w/ 316 S.S. Isolator1370060 ADPS6002S 50600 PSIG 25 PSIG 650 PSIG 3/8" NPT 316 S.S. Beryllium Copper w/ 316 S.S. Isolator

PCSPUMP CONTROL SWITCH

MFG. #5401143 - REV G10/07


UL Listed, CSA Approved, and CE MarkedListing/Approvals: UL Standard 508 Guide (NKPZ) and CSA Standard

C22.2 No. 14-M Class (321106) for Pressure Operated Industrial Control Equipment.

UL Standard 873 Guide (XAPX) for Temperature Indicating and Regulating Equipment.

CE MarkedAmbient/Media Temperature Range: 40°F to 140°F (4.5°C to 60°C)Construction:

• NEMA Type 4X Enclosure for indoor or outdoor use. (To maintain 4X rating, use appropriate Type 4 conduit hub.)

• Forged Brass Pressure Connections• Aluminum Diecast Base with Polymer Enclosure• Beryllium Copper• Nitrile Pressure Sealing O-ring

Switch Contact: 15 Amps @125 VAC Resitive 1/2 HP @ 125 VAC


Adjustable Operating Range

Minimum Deadband

Proof Pressure

Factory Setting

25-300 PSIG 12 PSIG 400 PSIG 90/60 PSIG

Direct control of motors with HP ratings greater than those shown could damage the PCS switch, resulting in sprinkler system damage and unintentional water flow. The installation of a pressure relief valve set at or below the system's maximum operating pressure is recommended.

GeneralThe model PCS is a Pump Control Switch with independent set and reset points which are adjustable throughout the entire operating range of the switch. The minimum deadband (minimum span between set and reset points) may be obtained at any point in the operating range of the switch. When the pressure drops below the setting, a snap action switch closes energizing the built in pump control relay and turns the pump on. When the pressure increases above the high setting, the snap action switch opens de-energizing the built in pump control relay and turns the pump off.This control device is designed for use as an operating control in applications sensing air, water, or any fl uid not harmful to the pressure connection, diaphragm or nitrile pressure-sealing o-ring. Where an operating control would result in personal injury and/or loss of property, it is the responsibility of the installer to add devices (safety, limit controls) that protect against, or systems (alarm, supervisory systems) that warn of control failure.This device is not intended for applications in explosive environments or use with hazardous fl uids.

PCS-300-1B Stock number 1370080

Mounting and InstallationThe Model PCS is typically mounted in an upright position on a fl at surface by two 1/4" screws through the mounting fl anges on the base or by two 1/4-20 screws into the back of the base. See Fig. 1 for mounting dimensions. Locate the switch where vibration, shock and ambient temperature fl uctuations are minimal. To avoid damage to the switch, always hold a wrench on the pressure connection hex when tightening pressure connections. Never tighten the pressure connection by turning the switch housing into the fi tting.

(2) 1/4-20 x .50 DEEPTHREADED HOLES FOR BACK MOUNTING OPTION

DIE CAST BOX CONNECTOR

(2) .266 MOUNTING THRU HOLES FOR 1/4” SCREWS

DWG #1143-4

Fig. 1

MFG. #5401143 - REV G10/07


PCSPUMP CONTROL SWITCH

WiringUse properly rated temperature supply wire for the anticipated service temperature. When applicable, make all electrical connections in accordance with the National Electrical Code and all local regulations in a junction box with a 2 inch maximum connector length between the PCS enclosure and junction wiring box.

Note: Do not alter factory wiring on micro switch.

Note: Do not loosen or remove the two (2) screws that secure the switch to the switch mounting bracket. The PCS requires 120V AC power to operate. It is not possible to test the switch with an ohm meter or continuity tester. When 120V AC is applied to the black and white wires, the 120V AC line voltage will be switched internally to the red wire when the pressure reaches the PCS low pressure setting. With 120V AC applied to the black, a wiring check may be performed by manually actuating the switch actuator on the side of the snap-action switch inside the enclosure. (See Fig. 3), and metering for 120V AC between the red and white wires.

Fig. 3

AdjustmentsThe two thumb adjustment dials, accessible through the enclosure cover, are used to adjust the set point and reset point of the switch. The dial scales and pointer may be used to give an indication of the low and high set points.The high setting adjustment dial is calibrated for increasing pressure. The low setting adjustment dial is calibrated for decreasing pressure. For best accuracy, make the fi nal adjustments with a pressure gauge at the actual working media pressure and temperature encountered in the application.

The minimum deadband (minimum span between set and reset points) may be obtained at any point in the operating range of the switch.When the desired settings are obtained, replace the adjustment cover. The adjustment cover and enclosure cover can be made tamper resistant by a single sealing wire inserted through the hole in the locking bar.The repeatability of the set and reset points is typically ±1% of the operating range.

Fig. 2

QRSQUICK RELEASE SWITCH

MFG. #5471131 - REV M2/08


UL, cUL Listed, FM Approved, and CE MarkedService Pressure: 250 PSI (17.24 BAR)Pressure Connection:1/2" NPT Male BrassEnclosure: Cover - Die-Cast external surface with gray powdercoat fi nish. Base - Plated SteelPressure Range: 5 - 70 PSI (.34 - 4.83 BAR) (See preset pressure setting chart)Differential: Approx. 1 PSI (.07 BAR)Burst Pressure: Min 1000 PSI (68.95 BAR)Environmental Specifi cations:Indoor use only NEMA 1/IP50 Rated Enclosure Temperature range:-40°F to 140°F (-40°C to 60°C)Immunity: EN61000-4-3/IEC1000-4-3: Immunity to Radio Frequency Electromagnetic Fields, (Level 3: 10V/m) EN61000-4-6/IEC1000-4-6: Immunity to Radio Frequency Induced Conducted Disturbances, (Level 3, 10Vrms) The cover must be securely fastened to the base to ensure metal to metal contact. Power Requirements: Standby: 40 mA at 24 VDC Max Alarm 80 mA Contact Ratings: Alarm and high/low air 5 amps at 25 VDC Cover tamper .1 amp at 25 VDCService Use: Automatic Sprinkler NFPA-13 Residential occupancy up NFPA-13R to four stories National Fire Alarm Code NFPA-72


The QRS is a microprocessor based pressure switch designed to monitor the air pressure in a dry pipe fi re sprinkler system and replace a mechanical air accelerator when used with a PFC Series Fire Alarm Releasing Panel, and an approved solenoid valve. High/Low air indication: One normally open contact that closes if the normal air pressure in the system increases or decreases beyond a given point. (see system air pressure setting chart) Preset pressure settings set by 10 position rotary switch on pc board. Normally wired to the supervisory circuit of the fi re alarm panel. Factory set to position #2 for a normal system air pressure of 30 PSIAlarm indication: One normally open contact that closes if the pressure drops at a rate of .1 PSI (.007 BAR) per second or greater (indicates an open sprinkler head, normal response time is approximately 2 seconds) or if the pressure drops to 5.5 PSI (.38

UL Listed Extinguishing System Attachment 354L & Accelerator 456AU.S. Patent Number 5,971,080

Stock number - 1341300

BAR). The QRS must be wired to a PFC Series Fire Alarm Releasing Panel that operates an approved electric solenoid valve on the dry pipe sprinkler system. Its function is to dump air into the intermediate chamber, tripping the alarm valve. This is used to replace a mechanical air accelerator and gives a much faster response time.Cover tamper: One normally open contact that closes when the cover is removed. May be wired to Supervisory Circuit condition on the fi re alarm panel.Loss of power results in an open circuit on the alarm input terminals and causes a Trouble Condition on the Releasing Panel.High/Low air contacts automatically reset when the pressure returns to normal.Alarm contacts: Automatically reset after 30 seconds for .1 PSI (.007 BAR) per second drop.Latch in alarm for critical low air (5.5 PSI) (.38 BAR) and reset at 6.5 PSI (.45 BAR).

The QRS must be wired using shielded cable in metal conduit (rigid or fl exible). Connect drain wire of shield to earth ground of the panel only. Do not connect drain wire to the QRS. Shielded cable: 6 conductor, 22 AWG stranded, PVC jacket, overall foil shield with drain. (Alpha wire type 5196C or equivalent.)

When the QRS is installed in accordance with these installation instructions, compliance to the above immunity standards indicates the equipment's design provides reasonable immunity from radio frequency sources. Intentionally subjecting the equipment to radio frequency sources could result in unintended operation of the dry pipe system.

Keep all radio transmitters or RF sources at least ONE foot from the QRS. Failure to do so could result in unintended operation of the dry pipe system.

MFG. #5471131 - REV M2/08



OUTGOING

INCOMING

DWG# 923-3



Dimensions

2.250(5.7 cm)

1.125(2.9 cm)

PRESSURE SETTING SWITCH

4.750(12.1 cm)

3.188(8.1 cm)

DWG #1131-2

2.750(7.0 cm)

4.250(10.8 cm)

Switch Setting

Low Air Threshold Nominal Pressure High Air Threshold

PSI BAR PSI BAR PSI BAR

0 7 .48 10 .69 15 1.04

1 7 .48 15 1.04 20 1.38

2 15 1.04 20 1.38 25 1.72

3 15 1.04 25 1.72 30 2.07

4 20 1.38 30 2.07 35 2.41

5 25 1.72 35 2.41 40 2.76

6 30 2.07 40 2.76 45 3.10

7 35 2.41 45 3.10 50 3.45

8 45 3.10 55 3.79 60 4.14

9 55 3.79 65 4.48 70 4.83

System Air Pressure Setting Chart

Switch is factory set on position #4 for normal air pressure of 30 PSI.

The following installation requirements shall be followed completely to ensure proper operation of the QRS and PFC-4410-RC. Make all connections between the QRS and PFC-4410RC with no power applied to the PFC-4410RC.

Failure to follow these requirements completely will result in improper operation.

1. There shall be a continuous run of shielded cable between the QRS & PFC-4410-RC. Splices shall not be permitted. If an 8 conductor shielded cable is not available, multiple cables may be used to provide the number of conductors required, providing all cables are shielded.2. All wiring between the QRS and PFC-4410-RC shall be installed in a continuous run of metal conduit. Interruptions in the continuity of the metal conduit shall not be permitted. There shall not be any other

wires in, or attached to, this conduit. If a junction box is used, the box shall be of the drawn style, not spot welded. There shall be no gaps in the box. The metal box cover shall remain on at all times.3. The drain wire of the shielded cable shall be grounded at the PFC-4410-RC only. It shall not be grounded at the QRS. Termination of the drain wire at the QRS shall consist of cutting the wire short and insulating it to prevent contact with other material or circuits.4. The drain wire of the shielded cable shall be connected to the S terminal on the RS-485 terminal strip in the PFC-4410-RC. The drain wire shall be as short as possible and insulated to prevent unwanted contact with other circuits on the 4410-RC.5. Terminals 8 & 9 of the QRS shall be connected to the + - terminals of the 24VDC power terminal strip respectively in the PFC-4410-RC, to supply power to the QRS. These connections must be made before applying power to the PFC-4410RC.6. The 120VAC power for the PFC-4410-RC shall be from a dedicated circuit. There shall not be any other conductors in the conduit other than the hot, neutral and ground wires necessary to power the PFC-4410-RC.

MFG. #5471131 - REV M2/08



7. The EG terminal of the PFC-4410-RC shall be connected to a good earth ground connection.8. The AC power wires shall be kept away from all other wires associated with the PFC-4410-RC by a minimum of 1 inch.9. The shielded cable for the QRS shall be separated from the NAC wiring by a minimum of 1 inch.10. There shall be no wires or circuits allowed inside the PFC-4410-RC cabinet except those directly connected to the panel. There shall be no external AC circuits brought into the PFC-4410-RC cabinet.11. The Top conduit entrances on the PFC-4410-RC cabinet shall not be used if there is the possibility of condensation or other liquid entering the cabinet.12. The supervisory air in the system shall be set to match one of the settings on the QRS rotary switch. Testing the systemWith power applied to the PFC-4410-RC panel and system pressure corresponding to the setting on the QRS rotary switch, press the reset button. The panel should restore to normal.Wait 60 seconds before doing anything.Note: failure to wait 60 seconds before testing the system will result in the system not operating properly!Open the test valve, the QRS should operate and the panel should display an alarm on the appropriate zone of the PFC panel. Trouble Shooting TipsProblem: PFC-4410RC indicates trouble on the zone the QRS is connected to.

Check: Temporarily remove all power from the PFC-4410RC for 5-10 seconds, then re-apply power. If power connections were made to the QRS while the PFC-4410RC was hot, it may be necessary to reboot the system.Problem: System won’t trip when air pressure is dropped during test.Check: Make sure a minimum of 30 seconds has expired after the system is restored to normal pressure, the QRS has power applied and the PFC panel is reset.The System air pressure and PFC panel must both be a normal condition with the QRS powered up for a MINIMUM of 30 seconds before the system can be tested.Check: Troubleshooting tip #1 about rebooting the system.Problem: The PFC panel indicates a SUPERVISORY condition.Check: The system air pressure may not correspond with the rotary switch setting on the QRS.Adjust the system air pressure to match the rotary switch on the QRS. (See the System Air Pressure Setting Chart on pg. 2)Check: The system air pressure with calibrated gauges.Problem: The system false trips or other unexplained operations. Check: Was shielded cable used.Check: Is the entire length of shielded cable completely enclosed in metal conduit.Check: Is the drain wire connected to the S terminal of the PFC series panel only.Check: Make sure the drain wire is not connected to the QRS.Check: Make sure the cover is installed on the QRS.Check: Make sure no wires other than the shielded cable for the QRS are included in the metal conduit.Check: Make sure the shielded cable is not running within 1” of either

JUMPER

JUMPER

TAMPER ALARMEOLR

LOW AIREOLR

1 2 3 4 5 6 7 8 91

2

GREENVIOLET

BLUE

BR

OW

N

ORANGE

YELLOW REDBLACK

24VDC+ -

ORANGEYELLOW

3

DO NOT CONNECT DRAIN WIRE AT THIS END. CUT OFF AND INSULATE.

4

+ - + - S + - + - + - + -24VDC RS-485 AUX PWR ABORT SUPV ZONE 1

DWG# 1131-1ARED

BLACK DRAIN WIRE INSULATE

VIOLET GREEN

BLUE

BROWN

Wiring Diagram for Model QRS Electronic Accelerator for Dry Pipe Valves(s)

OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4

+ - + - + - + -

S RELEASINGSOLENOID

1.5K

LOCATIONSOLENOIDINSTALL AT

PART #3005012DIODE ASS'YEND OF LINE

S RELEASINGSOLENOID

1.5K



S RELEASINGSOLENOID

1.5K



S RELEASINGSOLENOID

1.5K



DE

R

KC

ALB

DE

R

KC

A LB

DE

R

KC

ALB

DE

R

KC

ALB

SYSTEM 1 SYSTEM 2 SYSTEM 3 SYSTEM 4

PFC4410-RC Panel

1 If more than one QRS is used, install EOLR across terminals 6 & 7 of the last QRS only. If only one QRS is used, install EOLR across terminals 6 & 7 of QRS.

2 If more than one QRS is used, connect orange and yellow wires to terminals 6 & 7 of all except the last QRS. If only one QRS is used, do not use orange and yellow wires.

3 If more than one QRS is used, splice orange and yellow wires from fi rst QRS to second QRS inside PFC Series cabinet. Continue procedure to last QRS. If only one QRS is used, do not connect orange and yellow wires at either end.

4 Shielded cable must be used. Alpha wire type 5198C or equivalent. Cable must be installed in a continuous run of metal conduit from PFC panel to QRS.

Reference wiring diagram program #14

The QRS Quick Release Switch is to be wired to the Model PFC-4410-RC releasing panel using shielded cable in metal conduit (rigid or fl exible). Connect drain wire of shield to earth ground of the PFC-4410-RC only. Do not connect drain wire to QRS. Shielded cable: 6 or 8 conductor, 22 AWG stranded, PVC jacket, overall foil shield with drain. (Alpha wire type 5198C or equivalent).


MFG. #5471131 - REV M2/08


Wiring Diagram

When using the QRS as an electronic accelerator do not connect any other initiating device to any initiating zone of the PFC-100RC. Doing so could result in unintended operation of the dry pipe system.

The QRS uses electronic components to monitor the air pressure. Keep all radio transmitters or RF sources at least ONE foot from the QRS. Failure to do so could result in unintended operation of the dry pipe system.

Document Potter

Documents

Transcript of Document Potter