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

Valve
NormalOperating
Position
Diaphragm-Charge-Line Ball Valve Open
Alarm Test Ball Valve Closed
Water Supply Main Control Valve Open
Water Supply Main Drain Valve Closed
System Main Drain Valve Closed
Slow-Fill Ball Valve of the Victaulic AMTA (if applicable) Open
Fast-Fill Ball Valve of the Victaulic AMTA (if applicable) Closed
Isolation Ball Valve for Series 746-LPA Dry Accelerator (if
applicable)
Open
¼-Turn Vent Ball Valve for Series 746-LPA Dry Accelerator (if appli-
cable)
Closed
18. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the affected area that the valve is back in
service.
19. Provide test results to the authority having jurisdiction, if required.
WATERLEVELANDLOWAIRALARMTESTS
Perform the water level and low air alarm tests 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.
NOTICE
• IfaSeries746-LPADryAcceleratorisinstalled,makesurethe
authorityhavingjurisdictionisnotifiedthatthewaterleveland
lowairalarmtestsareinprogress.Failuretoclosetheisolation
ballvalveoftheSeries746-LPADryAcceleratormaycausethe
valvetotrip,resultinginafalsealarm.
1. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the affected area that the water level and
low air alarm tests will be performed.
Accelerator
Isolation
Ball Valve
2. If a Series 746-LPA Dry Accelerator is installed, close the isolation
ball valve.
Water Supply
Main Drain Valve
3. Open the water supply main drain valve fully to flush the water
supply of any contaminants.
Water Supply
Main Drain Valve
4. Close the water supply main drain valve.
Water Supply Main
Control Valve
5. Close the water supply main control valve.
I-769P.AC/ELEC_32
FireLockNXT™AutoConvertPreactionValve
SERIES 769
PreactionElectricAutoConvertDryTrim
I-769P.AC/ELECINSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
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VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2009 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_B

Victaulic FireLock NXT 769 Series Specifications

General

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