Potter PS40 Series Manual

Models: PS40-1 VdS
PS40-2 VdS
Service Use
Automatic Sprinkler
One or two family dwelling
Residential Occupancy up to four stories
National Fire Alarm Code
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: Dry pipe
systems, pre-action air/nitrogen supervision, pressure tanks, air supplies,
and water supplies. The PS40 switch is factory set for 2,8 BAR (40 PSI)
normal system pressure. The switch marked with the word LOW is set to
operate at a pressure decrease of ,7 BAR (10 PSI) at 2,1 BAR (30 PSI). The
switch marked with the word HIGH is set to operate at a pressure increase
of ,7 BAR (10 PSI) at 3,5 BAR (50 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.
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. A NEMA-4 rated conduit fitting is required
for outdoor use.
4. Connect the wires to the appropriate terminal connections for the
service intended. See Figures 2,4,5,6, and 8
Potter Electric Signal Company • St. Louis, MO • Customer Service: 866-572-3005 • Tech Support: 866-956-0988 • Canada 888-882-1833 • www.pottersignal.com
PRINTEd IN USA
SUPERVISORY PRESSURE SWITCH
UL, cUL, and CSFM Listed, FM and LPC Approved, NYMEA
Accepted, CE Marked, VdS
Dimensions: (9,6cm) 3.78" W x (8,1cm) 3.20" D x (10,7cm) 4.22" H
Conduit Entrance:
Enclosure: Cover- Die-cast with textured red powdercoat finish, single
Pressure Connection: Nylon 1/2" NPT male
Factory Adjustment:
Pressure Range: 0,7 - 4,1 BAR (10-60 PSI)
Differential: Typical 0,07 at 0,7 BAR (1 lb. at 10 PSI)
Maximum System Pressure: 17,2 BAR (250 PSI)
Switch Contacts: SPdT (Form C)
Environmental Specifications:
NEMA 4/IP66 Rated Enclosure - indoor or outdoor when used
with NEMA 4 conduit fittings.
Temperature range: -40°C to 60°C (-40°F - 140°F)
NFPA-13 Tamper: Cover incorporates tamper resistant fastener that requires a
NFPA-13d special key for removal. One key is supplied with each device.
NFPA-13R For optional cover tamper switch kit, order Stock No. 0090200.
NFPA-72 See bulletin #5401200 PSCTSK.
Adjustment And Testing
The operation of the supervisory 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 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 0,7 - 4,11 BAR (10 and 60 PSI) 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 verified with a pressure gauge.
MFG. #5401161 - REV d
09/12
MODEL PS40 (VdS)
Two knockouts provided for 1/2" conduit. Individual
switch compartments and ground screw suitable for
dissimilar voltages.
cover screw and rain lip.
Base- die-cast
PS40-1 operates on decrease at 2,1 BAR (30 PSI)
PS40-2 operates in increase at 3,5 BAR (50 PSI) and
on decrease at 2,1 BAR (30 PSI)
0,28 at 4,1 BAR (4 lbs. at 60 PSI)
10.1 Amps at 125/250VAC, 2.0 Amps at 30VdC
One SPdT in PS40-1, Two SPdT in PS40-2
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