Victaulic FireLock NXT 776 Series User Manual

PLACINGTHESYSTEMINSERVICE
• PNEUMATIC(DRYPILOT)RELEASESYSTEMS
• HYDRAULIC(WETPILOT)RELEASESYSTEMS
• ELECTRICRELEASESYSTEMS
CAUTION
MakesuretheSeries769FireLockNXTDeluge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.
1. Open the system main drain valve. Confirm that the system is
drained.
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.
4. Open the diaphragm-charge-line ball valve.
Screw
(Not in “set”
position)
Seal
Compression
Fitting
Drain
Hose
Body
Spring
Stem
Screw
(In “set”
position)
Sleeve
5. Confirm that water is flowing steadily from the Auto Drain. Pull up
on the Auto Drain Sleeve.
5a. FORPNEUMATIC(DRYPILOT)RELEASESYSTEMS:
Confirm that water is flowing through the Series 776 Low-
Pressure Actuator after opening the diaphragm-charge-line
ball valve and pulling up on the Auto Drain Sleeve.
I-769D_18
FireLockNXT™DelugeValve
SERIES 769
I-769D
INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
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VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_D

Victaulic FireLock NXT 776 Series Specifications

General

Brand	Victaulic
Model	FireLock NXT 776 Series
Category	Control Unit
Language	English