Potter Releasing Systems - Manual (Page 94)

94
PRINTED IN USA MFG. #5401206 - REV G
12/08
VSR-S
VANE TYPE WATERFLOW
ALARM SWITCH WITH RETARD
FOR SMALL PIPE
PAGE 3 OF 3
Testing
The frequency of inspection and testing for the Model VSR-S and its
associated protective monitoring system should be in accordance with
applicable NFPA Codes and Standards and/or the authority having
jurisdiction (manufacturer recommends quarterly or more frequently.)
An inspector's test valve (usually located at the end of the most remote branch
line) should always be used for test purposes. If there are no provisions for
testing the operation of the flow detection device on the system, application
of the VSR-S is not recommended or advisable.
A minimum flow of 10 gpm (38 Lpm) is required to activate this device.
Please advise the person responsible for testing of the
fire protection system that this system must be tested in accordance with
the testing instructions.
Maintenance
Inspect detectors monthly for leaks. If leaks are found, replace the
detector. The VSR-S waterflow switch should provide years of trouble-
free service. The retard and switch assembly are easily field replaceable.
In the unlikely event that either component does not perform properly,
please order replacement retard switch assembly stock #1029030. There
is no maintenance required, only periodic testing and inspection.
DWG# 1206-5
GROUND SCREWS
3.50" 5.56"
(89.0 mm)
(59.4 mm)
2.34"
(141.2 mm)
(52.3 mm)
4.89"
2.00"
(50.8 mm)
1"-11 1/2 NPT
Mounting Dimensions
Waterflow switches that are monitoring wet pipe sprinkler systems
shall not be used as the sole initiating device to discharge AFFF,
deluge, or chemical suppression systems. Waterflow switches used
for this application may result in unintended discharges caused
by surges, trapped air, or short retard times.
Removal
• To prevent accidental water damage, all control valves should
be shut tight and the system completely drained before waterflow
detectors are removed or replaced.
• Turn off electrical power to the detector, then disconnect wiring.
• Use a wrench on the flats of the bushing. Turn the switch
counterclockwise to disengage the pipe threads.
• Gently lift with your fingers, roll the vane so it will fit through the
hole while continuing to lift the waterflow detector.
• Lift detector clear of pipe.