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

PLACINGTHESYSTEMINSERVICE
CAUTION
• MakesuretheSeries769FireLockNXTPreactionValveis
properlyheatedandprotectedfromfreezingtemperaturesand
physicaldamage.
Failuretofollowthisinstructioncouldcauseimpropervalve
operation,resultinginpersonalinjuryand/orpropertydamage.
System Main
Drain Valve
1. Open the system main drain valve. Confirm that the system is
drained.
System Main
Drain Valve
2. Close the system main drain valve.
3. Confirm that all system drains are shut and that the system is free
of leaks.
3a. Confirm that the system has been depressurized. The gauges
should indicate zero pressure.
Accelerator
Isolation
Ball Valve
4. FORSYSTEMSINSTALLEDWITHASERIES746-LPADRY
ACCELERATOR: Confirm that the isolation ball valve to the
accelerator is closed.
Accelerator
¼-Turn Vent
Ball Valve
4a. FORSYSTEMSINSTALLEDWITHASERIES746-LPADRY
ACCELERATOR: Open the ¼-turn vent ball valve.
Diaphragm-Charge-
Line Ball Valve
5. Open the diaphragm-charge-line ball valve.
I-769P.AC/ELEC_20
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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REV_B

Victaulic FireLock NXT 769 Series Specifications

General

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