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.
The device shall be NEMA 4 rated and the enclosure shall be held captive by tamper resistant screws. It shall be possible to install an optional cover tamper switch to detect removal of the enclosure.
Main Features
Assembled in USA
0-90 second field replaceable time delay retard
Pressure Connection: 1/2" Male NPT
Easy to read retard time delay adjustment knob
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 Resistive
Conduit Entrances: Two knockouts provided for 1/2" conduit
Environmental Specifications: 40°F to 120°F (4,5°C to 49°C). NEMA 4 Enclosure - when used with proper conduit fittings
NOTE: Product currently out of stock which will delay delivery by 2 to 3 weeks
