Victaulic FireLock NXT 764 Series User Manual

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.
2. If a Series 746-LPA Dry Accelerator is installed, close the isolation
ball valve.
3. Open the water supply main drain valve fully to flush the water
supply of any contaminants.
4. Close the water supply main drain valve.
Water Supply Main
Control Valve
5. Close the water supply main control valve.
6. Partially open the system main drain valve slowly. Confirm that
water is not flowing from the drain. NOTE: If water is flowing from
the drain, the system may not have drained properly. In this case,
follow all steps under the “Placing the System in Service” section.
7. Record the system air pressure at which the low air alarm
activates.
I-768_22
FireLockNXT™DryValve
SERIES768
I-768INSTALLATION,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 764 Series Specifications

General

Brand	Victaulic
Model	FireLock NXT 764 Series
Category	Control Unit
Language	English