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

Accelerator
Isolation
Ball Valve
13. If a Series 746-LPA Dry Accelerator is installed, open the isolation
ball valve.
Water Supply
Main Drain Valve
14. 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
15. 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
16. Close the water supply main drain valve when a steady flow of
water occurs.
Water Supply Main
Control Valve
17. Open the water supply main control valve fully.
18. Confirm that all valves are in their normal operating positions (refer
to the table below).
Valve
NormalOperating
Position
Diaphragm-Charge-Line Ball Valve Open
Alarm Test Ball Valve Closed
Water Supply Main Control Valve Open
Water Supply Main Drain Valve Closed
System Main Drain Valve Closed
Slow-Fill Ball Valve of the Victaulic AMTA (if applicable) Open
Fast-Fill Ball Valve of the Victaulic AMTA (if applicable) Closed
Isolation Ball Valve for Series 746-LPA Dry Accelerator (if
applicable)
Open
¼-Turn Vent Ball Valve for Series 746-LPA Dry Accelerator (if appli-
cable)
Closed
19. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the affected area that the valve is back in
service.
20. Provide test results to the authority having jurisdiction, if required.
I-769P.AC/ELEC_34
FireLockNXT™AutoConvertPreactionValve
SERIES 769
PreactionElectricAutoConvertDryTrim
I-769P.AC/ELECINSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
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REV_B

Victaulic FireLock NXT 769 Series Specifications

General

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