D770-44-00
4
I56-2338-004R
©2007 System Sensor
1. Waterflow detectors may not work or operate properly if sprinkler piping be-
ing monitored is plugged with pipe scale, mud, stones or other foreign material.
Sprinkler systems should be checked regularly for such blocking material, following
the instructions in Chapter 5 of NFPA Standard 13A.
2. Alarms generated by the activation of waterflow detectors may not be received by a
central station if telephone or other communication lines to the detector are out of
service, disabled, or open.
3. Vane-type waterflow detectors have a normal service life of 10-15 years. Hard water
systems, however, may substantially reduce waterflow detector service life.
WARNING
The LimiTaTions of WaTerfLoW aLarm Devices
4. Waterflow detectors are not a substitute for insurance. Building owners should
always insure property and lives being protected by sprinkler systems.
5. If valves controlling the water supply to a sprinkler system are closed, vane-type
waterflow detectors will not work. All valves controlling a sprinkler water supply
should be sealed or locked in the normally open position. The normally open posi-
tion should be monitored by a sprinkler supervisory switch.
Three-Year LimiTeD WarranTY
System Sensor warrants its enclosed waterflow detector to be free from defects in materi-
als and workmanship under normal use and service for a period of three years from date
of manufacture. System Sensor makes no other express warranty for this waterflow detec-
tor. No agent, representative, dealer, or employee of the Company has the authority to
increase or alter the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the repair or replacement of any part of the waterflow
detector which is found to be defective in materials or workmanship under normal use
and service during the three year period commencing with the date of manufacture.
After phoning System Sensor’s toll free number 800-SENSOR2 (736-7672) for a Return
Authorization number, send defective units postage prepaid to: System Sensor, Repair
Department, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please include a
note describing the malfunction and suspected cause of failure. The Company shall not
be obligated to repair or replace units which are found to be defective because of damage,
unreasonable use, modifications, or alterations occurring after the date of manufacture.
In no case shall the Company be liable for any consequential or incidental damages for
breach of this or any other Warranty, expressed or implied whatsoever, even if the loss
or damage is caused by the Company’s negligence or fault. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation
or exclusion may not apply to you. This Warranty gives you specific legal rights, and you
may also have other rights which vary from state to state.
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 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 authority having
jurisdiction.
Under normal conditions, System Sensor waterflow detectors should provide
years of trouble-free service. However, if the delay mechanism or switch en-
closure needs to be replaced, follow these directions. To replace the delay
mechanism or switch enclosure, use a
3
/
16
-inch socket head screwdriver to
remove the three screws that hold it in place. Either mechanism can be easily
replaced without removing the detector from the pipe or draining the pipe. To
replace the delay mechanism, request Part No. A3008-00. For switch enclo-
sure, request Part No. A77-01-02. Do not repair or replace any other waterflow
detector components. If any other part of the detector does not perform prop-
erly, 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. Sys-
tem 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 water-
flow 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 sprinkler system.
Please refer to insert for the Limitations of Fire Alarm Systems
