Victaulic FireLock NXT 776 Series User Manual

REQUIREDTESTS
WARNING
Thebuildingownerortheirrepresentativeisresponsiblefor•
maintainingthefireprotectionsysteminproperoperating
condition.
Toensurepropersystemoperation,valvesmustbeinspected•
inaccordancewithcurrentNFPA-25requirementsorinaccor-
dancewiththerequirementsofthelocalauthorityhaving
jurisdiction(whicheverismorestringent).Alwaysrefertothe
instructionsinthismanualforadditionalinspectionandtesting
requirements.
Thefrequencyofinspectionsmustbeincreasedinthepres-•
enceofcontaminatedwatersupplies,corrosive/scalingwater
supplies,andcorrosiveatmospheres.
Depressurizeanddrainthepipingsystembeforeattemptingto•
install,remove,adjust,ormaintainanyVictaulicproducts.
Failuretofollowtheseinstructionscouldcausesystemfailure,
resultingindeath,seriouspersonalinjury,andpropertydamage.
NOTICE
Anyactivitiesthatrequiretakingthevalveoutofservicemay•
eliminatethefireprotectionprovided.
Considerationofafirepatrolshouldbegivenfortheaffected•
areas.
Beforeservicingortestingthesystem,notifytheauthority•
havingjurisdiction.
MAINDRAINTEST
Perform the main drain test on a frequency required by the current
NFPA-25 code. The authority having jurisdiction in the area may require
these tests on a more frequent basis. Verify these requirements by
contacting the authority having jurisdiction in the affected area.
1. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the affected area that the main drain test
will be performed.
2. Confirm that sufficient drainage is available.
3. Record the water supply pressure and system air pressure.
4. 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.
5. FORPNEUMATIC(DRYPILOT)RELEASESYSTEMS: Verify that
the system is at the proper air pressure for the local water supply
pressure.
CAUTION
Usecautiontopreventopeningthesystemmaindrainvalve•
accidentally.
Openingthesystemmaindrainvalvewillcausethevalveto
operate,resultinginpropertydamage.
6. Open the water supply main drain valve fully to flush the water
supply of any contaminants.
7. While the water supply main drain valve is fully open, record
the water supply pressure (from the water supply gauge) as the
r esidual pressure.
I-769D_24
FireLockNXT™DelugeValve
SERIES 769
I-769DINSTALLATION,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 776 Series Specifications

General

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