To Next PageTo Next PageWhat to do if air is leaking from the diaphragm assembly of Victaulic Control Unit?
If air is leaking from the diaphragm assembly of your Victaulic Control Unit, the diaphragm is damaged. Contact Victaulic.
Why is air leaking from the ball drip on my Victaulic Control Unit alarm manifold assembly?
If air is leaking from the ball drip on the alarm manifold assembly of your Victaulic Control Unit, it means that air is passing the clapper seal and entering the intermediate chamber of the valve because water is under the clapper seal. To fix this, check the clapper seal and valve body seat ring for physical damage or foreign material. Make sure there is no water under the seal. If water is present, remove and replace the seal.
How to fix Victaulic 769N FireLock NXT Control Unit valve operating without sprinkler activation?
If the Victaulic Control Unit valve operates without sprinkler activation, it could be due to a loss of air pressure in the system or trim. The pressure switch on the air compressor might be set too low, or the compressor isn't working correctly. Check for leaks in the system and trim, and ensure the AMTA is working as it should. You might want to install a low-air supervisory switch. Also, increase the “ON” setting of the air compressor’s pressure switch and inspect the air compressor to ensure it is working correctly.
What to do if the Series 753-E Solenoid Valve of Victaulic 769N FireLock NXT Control Unit does not open?
If the Series 753-E Solenoid Valve of your Victaulic Control Unit isn't opening, it could be because the solenoid isn't getting power or the solenoid coil has been removed from the valve. Check all electrical connections to ensure the solenoid is receiving power. If power issues persist, have a qualified fire alarm control specialist check the fire alarm control panel configuration. Also, reinstall the coil to the solenoid valve.
Why won't the clapper latch closed on my Victaulic 769N FireLock NXT?
If the clapper of your Victaulic Control Unit won't latch closed, it could be due to a lack of water pressure on the diaphragm, or the auto drain isn't set. Check the water pressure in the charge line and ensure the restrictor in the charge line is clean. Make sure the manual pull station valve is closed and the solenoids are closed (de-energized). Set the auto drain by pulling up on the auto drain sleeve.
What to do if the solenoid valve of Victaulic 769N FireLock NXT Control Unit does not open?
If the solenoid valve of your Victaulic Control Unit does not open, it may be because power is not being supplied to the solenoid valve, or the solenoid coil has been removed from the valve. Check all electrical connections to verify power is being supplied to the solenoid valve. If there are still issues with power being supplied to the solenoid valve, a qualified fire alarm control specialist should verify that the fire alarm control panel is configured correctly. Reinstall the coil to the solenoid valve.
Why is air leaking from the ball drip on the alarm manifold assembly of my Victaulic 769N FireLock NXT Control Unit?
If air is leaking from the ball drip on the alarm manifold assembly of the Victaulic Control Unit, it is likely due to air getting past the clapper seal and into the intermediate chamber of the valve, with water under the clapper seal. Check the clapper seal and valve body seat ring for physical damage and foreign material. Inspect the clapper seal to verify that no water is under the seal. If water is present, remove and replace the seal.
Why is water leaking from the ball drip on the alarm manifold assembly of my Victaulic 769N FireLock NXT?
If water is leaking from the ball drip on the alarm manifold assembly of your Victaulic Control Unit, it means that water is getting past the clapper seal and into the intermediate chamber of the valve, with water under the clapper seal. Check the clapper seal and valve body seat ring for physical damage and foreign material. Inspect the clapper seal to verify that no water is under the seal. If water is present, remove and replace the seal.
Why is no water passing through the Series 776 Low-Pressure Actuator of my Victaulic 769N FireLock NXT?
If no water is passing through the Series 776 Low-Pressure Actuator of your Victaulic Control Unit, the strainer in the priming manifold might be clogged. Disassemble and clean the priming manifold strainer.
Why doesn't the Series 746-LPA Dry Accelerator operate within specified pressure drop in my Victaulic 769N FireLock NXT?
If the Series 746-LPA Dry Accelerator on your Victaulic Control Unit isn't operating within a 0.3-Bar/5-psi pressure drop, it could be due to a loss of air pressure in the upper air chamber or the air decay rate of the system being too slow. Use soapy water on all joints around the Series 746-LPA Dry Accelerator to check for leaks and repair them. Ensure there are no restrictions in the remote system test valve (inspector’s test connection).
General| Application | Fire Protection Systems |
|---|---|
| Connection Type | Grooved |
| Body Material | Ductile Iron |
| Seat Material | EPDM |
| Trim Material | Stainless Steel |
| Type | Butterfly Valve |
| Model | 769N |
| Pressure Rating | 300 psi |
| Maximum Working Pressure | 300 psi |
| Temperature Rating | -40°F to 150°F (-40°C to 65°C) |
| Size Range | 2" - 12" |
| Sizes | 2", 2.5", 3", 4", 5", 6", 8", 10", 12" |
| Listings/Approvals | UL, FM |
Provides an overview of the Victaulic Series 769N FireLock NXT Actuated Valve with Preaction Trim.
Explains hazard levels and essential safety precautions for installers.
Details crucial steps for installation and proper handling of received components.
Step-by-step guide for placing the fire protection system into initial service.
Table listing the standard operating positions for various valves in the system.
Outlines the necessary steps to properly reset the fire protection system.
Details weekly and monthly visual inspection requirements for the valve and trim.
Covers essential tests including drain, flow, trip, water level, and low air alarm tests.
Instructions for inspecting internal valve components at specified frequencies.
Guides for replacing key components like clapper seals, diaphragms, and filters.
Provides solutions for common problems related to the system, trim, and actuators.
Illustrates field wiring connections for System Sensor and Potter panels.
Details programming steps for System Sensor and Potter fire alarm control panels.
