Victaulic FireLock NXT 768 Series User Manual

CAUTION
DONOTusesolventsorabrasivesonornearthevalvebody•
seatring.
Failuretofollowthisinstructioncouldpreventtheclapper
fromsealing,resultinginimpropervalveoperationand/orvalve
leakage.
14. Rotate the clapper out of the valve body. Inspect the clapper seal
and seal-retaining ring. Wipe away any contaminants, dirt, and
mineral deposits. Clean out any holes that are plugged in the
valve-body seat ring. DONOTUSESOLVENTSORABRASIVES.
15. While the clapper is rotated out of the valve body, pull the latch
forward to inspect the diaphragm. If the diaphragm shows any
signs of wear or damage, replace it with a new, Victaulic-supplied
diaphragm. Refer to the “Removing and Replacing the Diaphragm
Assembly” section.
16. Inspect the clapper for freedom of movement and physical
damage. Replace any damaged or worn parts by following the
applicable instructions in the “Maintenance” section.
17. Re-install the cover plate by following the “Installing the Cover
Plate Gasket and Cover Plate” section.
18. Place the system back in service by following the “Placing the
System in Service” section.
I-768_31
FireLockNXT™DryValve
SERIES768
I-768INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_D

Victaulic FireLock NXT 768 Series Specifications

General

Brand	Victaulic
Model	FireLock NXT 768 Series
Category	Control Unit
Language	English