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D770-24-00 

4 I56-1452-004R

 

©

 2005 System Sensor 

Three-Year Limited Warranty

System Sensor warrants its enclosed smoke detector to be free from defects in 
materials and workmanship under normal use and service for a period of three 
years from date of manufacture. System Sensor makes no other express war-
ranty for this smoke detector. 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 smoke 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 1-800-SENSOR2 (736-7672) for a Return Authorization number, 
send defective units postage prepaid to: System Sensor, Repair  Department, RA 
#__________, 6581 Kitimat Rd., Unit #6, Mississauga, Ontario, L5N 3T5. 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 under common law.

1.  Waterflow detectors may not work or operate properly if sprinkler 

piping being 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 water-
flow 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 position should be monitored by a 
sprinkler supervisory switch.

6.  Unless all six cover screws are installed and tightened to 40 in. lbs. 

min., the hazardous location enclosure ratings will be voided.

Delay
adjustment
dial

NOTE: Retard time may exceed 90 seconds.
 

Adjust and verify that time does not exceed 90 seconds.

55

70

0

15

45

30

TI

ME

  DE

LAY  IN  SECO

ND

S

NU

MB

ER

  ON

  DIAL  IS  APPRO

XIM

AT

E

W0112-01

Figure 5. Delay adjustment dial:

Please refer to insert for the Limitations of Fire Alarm Systems

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