Victaulic 769N FireLock NXT Series User Manual

I-769N.Preaction/AC-ELEC / Victaulic
®
Series 769N FireLock NXT
™
/ Installation, Maintenance, and Testing Manual
REQUIRED AUTOCONVERT SYSTEM TEST
Victaulic recommends the AutoConvert system test every year (at
minimum).
1. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the affected area that the AutoConvert
system test 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.
5. Close the water supply main control valve.
6. Open the system main drain valve slightly to lower the system air
pressure approximately 3 – 5 psi/21 – 34 kPa/0.2 – 0.3 Bar.
DO NOT drop the system air pressure below 10 psi/69 kPa/0.7 Bar.
6a. Verify that the AutoConvert air pressure gauge (item 11 on pages 8
and 9) maintains pressure and does not track system air loss.
6b. Remove power from the FACP.
6c. Verify that the latching solenoid of the AutoConvert system opens.
Air pressure decay on the system pressure gauge (item 6 on pages
8 and 9) should track with the AutoConvert air pressure gauge
(item 11 on pages 8 and 9).
6d. Restore power to the FACP.
7. Close the system main drain valve.
8. Close the slow-fill ball valve on the AMTA
9. Open the fast-fill ball valve on the AMTA. Bring the pressure back
up to the normal system pressure.
10. When normal system air pressure is reached, close the fast-fill ball
valve on the AMTA.
11. Open the slow-fill ball valve on the AMTA.
12. If a Series 746-LPA Dry Accelerator is installed, open the isolation
ball valve.
13. Open the water supply main drain valve.
14. Open the water supply main control valve slowly until water flows
steadily from the open water supply main drain valve.
15. Close the water supply main drain valve when a steady flow of
water occurs.
16. Open the water supply main control valve fully.
17. Confirm that all valves are in their normal operation 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
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 Supply
Main Drain Valve
(Steps 3, 4,
13, & 15)
Water Supply Main
Control Valve
(Steps 5, 14, & 16)
System Main
Drain Valve
(Steps 6 & 7)
I-769N.Preaction/AC-ELEC_23REV_A

Victaulic 769N FireLock NXT Series Specifications

General

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