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

Water Supply Main
Control Valve
5. Close the water supply main control valve.
System Main
Drain Valve
6. Open the system main drain valve slightly to lower the system air
pressure approximately 3 to 5 psi/0.2 - 0.3 Bar. DO NOT drop the
system air pressure below 10 psi/0.7 Bar.
6a. Make sure the AutoConvert Assembly Air Pressure Gauge (Item 34
on page 5) maintains pressure and does not track system air loss.
6b. Remove power from the FACP.
6c. Make sure the latching solenoid of the AutoConvert Trim Assembly
opens. System air pressure decay (system pressure gauge, Item
17 on page 4) should track with the AutoConvert Assembly Air
Pressure Gauge (Item 34 on page 5).
6d. Restore power to the FACP.
System Main
Drain Valve
7. Close the system main drain valve.
Slow-Fill
Ball Valve
8. Close the slow-fill ball valve on the AMTA.
Fast-Fill
Ball Valve
9. Open the fast-fill ball valve on the AMTA. Bring the pressure back
up to the normal system pressure.
Fast-Fill
Ball Valve
10. When the normal system air pressure is reached, close the fast-fill
ball valve on the AMTA.
I-769P.AC/ELEC_30
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