POTTER PS10 Series Pressure Type Waterflow Switch Canada Owner’s Manual

POTTER PS10 Series Pressure Type Waterflow Switch Canada

Features

• One or two switch models available
• Independent switch adjustment on two switch models, no tools needed
• Two 1/2” conduit/cable entrances
• Separate isolated wiring chambers
• Non-corrosive pressure connection
• VdS version available
• Non-Conductive enclosure
• Available with Nylon or Brass pressure connection (Nylon connection shown in picture).

NOTICE: This document contains important information on the installation and operation of PS10 pressure switches. Please read all instructions carefully before beginning installation. A copy of this document is required by NFPA 72 to be maintained on site.

Installation

The Potter PS10 Series Pressure Actuated Switches are designed for the detection of a waterflow condition in automatic fire 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 Teflon 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 flats 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 sufficient to dislodge the knockout plug. See Fig 9.
3. Run wires through an approved conduit connector and affix the connector to the device. NEMA 4 rated conduit and fittings are required for outdoor use.
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.

Technical Specifications

Conduit Entrances| Two knockouts for 1/2” conduit provided. Individual switch compartments and ground screw suitable for dissimilar voltages
---|---

Contact Ratings

| SPDT (Form C)

10.1 Amps at 125/250VAC, 2.0 Amps at 30VDC One SPDT in PS10-1, Two SPDT in PS10-2

Cover Tamper| Cover incorporates tamper resistant fastener that requires a special key for removal. One key is supplied with each device.
Differential| 2 psi (0,13 bar) typical
Dimensions| 3.78”(9,6cm)Wx3.20”(8,1cm)Dx4.22”(10,7cm)H

Enclosure

| Cover: Weather/UV/Flame Resistant High Impact Composite Base: Die Cast

All parts have corrosion resistant finishes

Environmental

Limitations

| -40º F to 140ºF (-40ºC to 60ºC)

NEMA 4/IP66 Rated Enclosure indoor or outdoor when used with NEMA 4 conduit fittings

Factory Adjustment| 4 – 8 psi (0,27 – 0,55 bar)
Maximum System

Pressure

| 300 psi (20,68 bar)
Pressure Connection| 1/2” NPT male Nylon or optional Brass
Pressure Range| 4-15 psi (0,27 – 1,03 bar)
Service Use| NFPA 13, 13D, 13R, 72

Testing and Adjustment

NOTE: Testing the PS10 may activate other system connected devices. 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). There should be no need to adjust the PS10 when it is used as a pressure type waterflow indicator. It is factory set to comply with UL and FM standards.

Wet System

• Method 1: When using PS10 and control unit with retard – connect PS10 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.

Dimensions

Switch Clamping Plate Terminal

WARNING: 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.

Typical Sprinkler Applications

CAUTION: Closing of any shutoff valves between the alarm check valve and the 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.

Low Pressure Signal Connection

Waterflow Signal Connection

Local Bell For Waterflow Connection

One Conduit Wiring

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

Switch Operation

Terminal C: Common

1. Closed when installed under normal system pressure.
2. Open when installed under normal system pressure. Closes on pressure drop. Use for low pressure supervision.

Terminal

1. Open with no pressure supplied. Closes upon detection of pressure. Use for waterflow indication.
2. Closed with no pressure applied.

Removing Knockouts

Engineer/Architect Specifications Pressure Type Waterflow Switch

Pressure type waterflow switches; shall be a Model PS10 as manufactured by Potter Electric Signal Company, St Louis MO., and shall be installed on the fire sprinkler system as shown and or specified 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 waterflow 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 waterflow 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 waterflow switch shall be Weather/UV/ Flame Resistant High Impact Composite with rain lip and shall attach with one tamper resistant screw. The Pressure type waterflow switch shall be suitable for indoor or outdoor service with a NEMA 4/IP66 rating. The pressure type waterflow switch shall be UL Ulc and CSFM listed, FM and LPC approved and NYMEA accepted.

WARNING

• Installation must be performed by qualified 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.

CAUTION

• Do not tighten by grasping the switch enclosure. Use wrenching flats 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 Teflon 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.

Ordering Information

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.

NOTICE: Pressure switches have a normal service life of 10-15 years. However, the service life may be significantly reduced by local environmental conditions.

Potter Electric Signal Company, LLC

• St. Louis, MO
• Phone: 800-325-3936
• www.pottersignal.com
• firealarmresources.com

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