Potter Releasing Systems - Manual (Page 106)

106
WFSR-F
WATERFLOW ALARM SWITCH
WITH RETARD
MFG. #5400987 - REV W
12/08
PAGE 2 OF 2 PRINTED IN USA
Switch Terminal Connections
Clamping Plate Terminal
Fig. 4 Fig. 3
Retard Adjustment:
To change time turn knob (either
direction) for desired time delay.
Use the minimum amount of retard
necessary to prevent false alarms, a
“B” setting is usually adequate for
this. Factory set at “B”.
APPROX. RETARD SETTINGS (IN SEC.)
0 A B C D E
0 10-25 20-40 35-55 50-70 60-90
OUTGOING
INCOM
ING
DWG# 923-3
Fig. 5 Typical Wet System
DO NOT LEAVE COVER
OFF FOR EXTENDED
PERIOD OF TIME
DWG# 987-30
An uninsulated section of a single conductor
should not be looped around the terminal and
serve as two separate connections. The wire must
be severed, thereby providing supervision of the
connection in the event that the wire becomes
dislodged from under the terminal.
Use teflon tape sealant only. Apply only
to male threads of connectors.
Use of pipe cement voids warranty as this
material may obstruct pressure aperture
resulting in loss of alarm signal.
Device must be installed before any shut
off valve on alarm port line unless it is
supervised by a supervisory switch such
as Potter Model RBVS.
The system should be tested on a
quarterly basis or more frequently to
insure proper operation.
Due to the possibility of unintended discharges caused by pressure
surges, trapped air, or short retard times, 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.
ALARM CHECK VALVE
RISER TO
SPRINKLER
HEADS
OPTION 1 OPTION 2
WFSR-F
WATERFLOW
DEVICE
WITH RETARD
PS10
WATERFLOW
PRESSURE SWITCH
TO WATER
MOTOR GONG
SHUTOFF
(OPEN)
PETCOCK
(OPEN)
ALARM LINE
SHUTOFF VALVE,
SUPERVISED
(OPEN)
WATER PRESSURE GAUGE
(SYSTEM PRESSURE)
(OPEN)
CHECK VALVE
USE TO BUILD
SMALL EXCESS
SURGES
BY-PASS LINE
WATER PRESSURE GAUGE
(CITY PRESSURE) (OPEN)
CHECK
RBVS
DRAIN
VALVE
(CLOSED)
WATER BY-PASS
TEST VALVE
(CLOSED)
OSYSU
TAMPER
DEVICE
OSY CONTROL VALVE
(OPEN)
RETARD
CHAMBER
PETCOCK
(OPEN)
DRIP
CUP
CHECK
VALVE
STRAINER
DWG. #8700023-2A
DRAIN
PIPE
WATER PRESSURE
FROM CITY MAINS