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

Water Supply
Main Drain Valve
5. Open the water supply main drain valve.
6. Confirm that water is not flowing from the water supply main drain
valve.
Diaphragm-Charge-
Line Ball Valve
7. Close the diaphragm-charge-line ball valve.
System Main
Drain Valve
8. Open the system main drain valve to drain any water that has
accumulated and to release system air pressure.
NOTE: If the system has operated, open the remote system test valve
(inspector’s test connection) and any auxiliary drain valves.
Slow-Fill
Ball Valve
9. Close the slow-fill ball valve on the AMTA.
WARNING
• Makesurethevalveisdepressurizedand
drainedcompletelybeforethecoverplate
boltsareremoved.
Thecoverplatecouldblowoffifthecoverplate
boltsareremovedwhilethevalveispressur-
ized,resultinginseriouspersonalinjuryand/or
propertydamage.
10. ACTIVATETHEELECTRICALPORTIONOFTHESYSTEMTO
ENERGIZETHESOLENOID,ORPUSHDOWNONTHEAUTO
DRAINSCREWTOREMOVEPRESSUREINTHEDIAPHRAGM
CHARGELINE.
11. OPENTHEMANUALPULLSTATION.
12. After all pressure is released from the system, loosen the cover
plate bolts slowly. NOTE: DO NOT remove any cover plate bolts
until all cover plate bolts are loosened.
12a. Remove all cover plate bolts, along with the cover plate and cover
plate gasket. NOTE: The 1 ½-inch/48.3-mm and 2-inch/60.3-mm
valve sizes contain washers under the heads of the cover plate
bolts. Keep these washers for re-installation.
REV_B
FireLockNXT™AutoConvertPreactionValve
SERIES 769
PreactionElectricAutoConvertDryTrim
I-769P.AC/ELECINSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2009 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
I-769P.AC/ELEC_39

Victaulic FireLock NXT 769 Series Specifications

General

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