General
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. 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.
Features:
- Assembled in USA
- Easy to read retard time delay adjustment knob
- 0-90 second field replaceable time delay retard
- Mounting secured with integral 1/2" male NPT fitting
- Two SPDT (form C) contacts
- Weatherproof
- Easy to read wire terminal designations
Specifications
- Make : Potter
- Model: WFSR-F
- Pressure Connection:1/2" Male NPT
- Conduit Entrances: Two knockouts provided for 1/2" conduit.
- Contact Ratings: Two Sets of SPDT (Form C) 15.0 Amps at 125/250VAC 2.0 Amps at 30VDC Resistive
- Enclosure Cover - Weather/UV/Flame Resistant High Impact Composite Base - Die-cast aluminum
- Environmental Specifications NEMA 4/IP54 Rated Enclosure suitable for indoor or outdoor use with factory installed gasket when used with appropriate conduit fitting.
- Temperature Range: 40°F - 120°F, (4.5°C - 49°C) - UL Non-corrosive sleeve factory installed in saddle.
- Flow Sensitivity Range for Signal 4-10 GPM (15-38 LPM) – UL
- Maximum Surge:18 FPS (5.5 m/s)
- Max. Pressure: 175 PSI (12,1 BAR)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
