Victaulic 769N FireLock NXT Series User Manual

I-769N.Preaction/AC-ELEC / Victaulic
®
Series 769N FireLock NXT
™
/ Installation, Maintenance, and Testing Manual
LOW WATER ALARM TEST
Perform the low water alarm test on a frequency required by current
LPCB/EN requirements. 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 low water alarm
test will be performed.
2. Close the water supply main control valve.
2a. Verify that the water pressure is above 1.4 Bar/20 psi.
3. Partially open the water supply main drain valve slowly. Record
the pressure at which the low water alarm activates. NOTE: The
low water alarm will sound only if it is connected properly to the
Fire Alarm Control Panel (FACP). The low water alarm should clear
automatically when the valve is reset.
4. Close the water supply main drain valve.
5. Open the water supply main control valve fully.
6. Confirm that all valves are in their normal operating positions (refer
to the table below).
Valve Normal Operating Position
Water Supply Main Control Valve Open
Water Supply Main Drain Valve Closed
System Main Drain Valve Closed
Charge Line Ball Valve of the Priming Manifold Assembly Open
Alarm Test Ball Valve of the Priming Manifold Assembly 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 applicable)
Closed
7. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the affected area that the valve is back in
service.
8. Provide test results to the authority having jurisdiction, if required.
Water Supply
Main Drain
Valve
(Steps 3 & 4)
Water Supply Main
Control Valve
(Steps 2 & 5)
I-769N.Preaction/AC-ELEC_25REV_A

Victaulic 769N FireLock NXT Series Specifications

General

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