Potter PS40 Serie Fiche Technique

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
• Non-Conductive Enclosure
• VdS version available
• Available with Nylon or Brass pressure connection (Nylon
connection shown in picture).
This document contains important information on the installation
and operation of PS40 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 PS40 Series Supervisory Pressure Actuated Switches are
designed primarily to detect an increase and/or decrease from normal
system pressure in automatic fire sprinkler systems. Typical applications
are: air/nitrogen supervision in dry pipe and pre-action systems, pressure
tanks, air supplies, and water supplies. The PS40-1 has one switch and
is factory set to activate at approximately 30 psi (2,1 bar) on a decrease
in pressure. The PS40-2 has two switches. The Low switch is factory set
to activate at approximately 30 psi (2,1 bar) on a decrease in pressure.
The High switch is factory set to activate at approximately 50 psi (3,5
bar) on an increase in pressure. NFPA 72 requires a supervisory signal
if the pressure increases or decreases by 10 psi from normal. The PS40
is factory set for a normal air pressure of 40 psi. 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 Teflon 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 flats on the device.
Potter Electric Signal Company, LLC • St. Louis, MO • Phone: 866-956-0988 / Canada 888-882-1833
5400931 - REV J
Supervisory Pressure Switch
Technical Specifications
Two knockouts for 1/2" conduit provided. Individual switch
Conduit Entrances
compartments and ground screw suitable for dissimilar voltages
SPDT (Form C)
Contact Ratings 10.1 Amps at 125/250 VAC, 2.0 Amps at 30 VDC
One SPDT in PS40-1, Two SPDT in PS40-2
Cover incorporates tamper resistant fastener that requires a special
Cover Tamper
key for removal. One key is supplied with each device.
Typical 1 lb. at 10 psi (,07 at ,7 bar)
Differential
4 lbs at 60 psi (,28 at 4,1 bar)
Dimensions 3.78"(9,6cm)Wx3.20"(8,1cm)Dx4.22"(10,7cm)H
Cover: Weather/UV/Flame Resistant High Impact Composite
Enclosure Base: Die Cast
All parts have corrosion resistant finishes
-40º F to 140ºF (-40ºC to 60ºC)
Environmental
NEMA 4/IP66 Rated Enclosure indoor or outdoor when used with
Limitations
NEMA 4 conduit fittings
PS40-1 operates on decrease at 30 psi (2,1 bar)
Factory Adjustment PS40-2 operates on increase at 50 psi (3,5 bar) and on decrease at
30 psi (2,1 bar)
Maximum System
300 psi (20,68 bar)
Pressure
Pressure Connection 1/2" NPT male Nylon or optional Brass
Pressure Range 10-60 psi (,7-4,1 bar)
Service Use NFPA 13, 13D, 13R, 72
*Specifications subject to change without notice.
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PS40 Series
• www.pottersignal.com
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