FIGURE 4. KNOCKOUT PLUG REMOVAL:
GROUND
SCREW
W0383-01
FIGURE 5. DELAY ADJUSTMENT DIAL:
NOTE: RETARD TIME MAY EXCEED 90 SECONDS. ADJUST
AND VERIFY
THAT TIME DOES NOT EXCEED 90 SECONDS.
NUMBER ON DIAL IS APPROXIMATE TIME DELAY IN SECONDS
DELAY
ADJUSTMENT
DIAL
W0385-00
SS-200-035 3 I56-4175-002
MECHANICAL DELAY ADJUSTMENT
The pneumatic delay is preset at the factory to 30 seconds. To adjust the set-
ting, turn the adjustment dial clockwise to increase the delay, counterclock-
wise to decrease it. The delay is adjustable from 0 to 90 seconds max.
See
Figure 5.
As a point of reference when setting time delay in dark environ-
ments the notch in the dial indicates an approximate 30 second time delay
and the larger of the three tabs indicates an approximate 60 second time
delay.
NOTE:
Set the delay to the minimum required to prevent false alarms from
flow surges.
Periodically test time delay as required by Authority Having Jurisdiction or
code authority.
OPERATIONAL TESTING
Always notify a central station monitoring waterflow alarms before repairing,
maintaining, or testing waterflow alarm devices.
1.
Replace the cover and tighten the tamper proof screws with the tamper
proof wrench. Store the wrench in a secure place.
2.
Open the inspector’s test valve and time how long it takes for the detec-
tor to indicate a flow condition. The detector should remain activated un-
til the inspector’s test valve is closed. Air pockets in the sprinkler system
may increase the apparent delay.
MAINTENANCE
To prevent accidental water damage, control valves should be shut tight and
the system completely drained before waterflow detectors are removed or
replaced.
Inspect detectors in accordance with applicable ULC and NFPA codes and
standards and/or the Authority Having Jurisdiction for leaks and replace if a
leak occurs. Test detectors at least quarterly, as described under Operational
Testing, to ensure proper operation. Test more often if required by the author-
ity having jurisdiction.
Under normal conditions, System Sensor waterflow detectors should provide
years of trouble-free service. However, if the delay mechanism becomes
faulty, a replacement kit is available. To replace the delay mechanism, re-
quest Part No. FS-RT. Complete instructions are enclosed with replacement
parts. The mechanism can be easily replaced without removing the detector
from the pipe or draining the pipe. Do not repair or replace any other water-
flow detector components. If any other part of the detector does not perform
properly, replace the entire detector. Installation methods other than those
listed in this installation manual may prevent the device from reporting the
flow of water in the event the associated sprinkler system is activated by a
fire. System Sensor is not responsible for devices that have been improperly
installed, tested, or maintained.
To remove a detector:
1.
Drain the pipe.
2.
Turn off electrical power to the detector and disconnect the wiring.
3.
Loosen the nuts and remove the U-bolts.
4.
Gently lift the saddle far enough to get your fingers under it. Then, roll
the vane so it will fit through the hole while continuing to lift the waterflow
detector saddle.
5.
Lift the detector clear of the pipe.
CAUTION
If a vane breaks in a pipe, find and remove it. If it is not removed, the vane
may restrict the flow of water to all or part of the fire sprinkler system.
