Victaulic FireLock NXT 769 Series Installation, Maintenance, And Testing Manual

Accelerator
Isolation
Ball Valve
24. FORSYSTEMSINSTALLEDWITHASERIES746-LPADRY
ACCELERATOR: Open the isolation ball valve. This will set the
accelerator.
25. Observe the system air pressure over a 24-hour period to confirm
system integrity. If there is degradation in system air pressure, find
and correct all leaks. NOTE: NFPA requires less than 1½-psi/
0.1-Bar leakage in 24 hours.
Water Supply
Main Drain Valve
26. Open the water supply main drain valve.
CAUTION
• Takeprecautionswhenopeningthewatersupplymaincontrol
valve,sincewaterwillflowfromallopensystemvalves.
Failuretofollowthisinstructioncouldresultinpropertydamage.
Water Supply Main
Control Valve
27. Open the water supply main control valve slowly until water flows
steadily from the open water supply main drain valve.
Water Supply
Main Drain Valve
28. Close the water supply main drain valve when a steady flow of
water occurs.
Drip Check
29. Confirm that there is no leakage from the intermediate valve
chamber. The drip check in the alarm line should not be leaking
water or air.
Water Supply Main
Control Valve
30. If water or air is flowing from the drip check, close the water
supply main control valve, and start over at step 1. Refer to the
“Troubleshooting” section.
I-769P.AC/ELEC_24
FireLockNXT™AutoConvertPreactionValve
SERIES 769
PreactionElectricAutoConvertDryTrim
I-769P.AC/ELEC
INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
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VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2009 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_B

Victaulic FireLock NXT 769 Series Specifications

General

Brand	Victaulic
Model	FireLock NXT 769 Series
Category	Control Unit
Language	English