PROGRAMMING MANUAL • PH5 AIR INTAKE EMERGENCY SHUT-OFF VALVE
L6448
ECN 1-1941
L6448_Rev3
2
1
Operation
When the controller is unprogrammed, both lights will flash alternatingly
When the engine is not running, neither light will flash on the controller
When the engine is running, the green light should flash every 5 seconds to indicate the system is active and
the engine speed is being monitored
When the valve is closed, the red light will become lit and remain lit for 30 seconds
When an emergency condition arises and an engine shutdown is needed, activate the toggle switch and the
valve will close
In an overspeed runaway condition, the PowerGuard controller will automatically close the valve and shut
down the engine
Once 30 seconds elapses, the red light will extinguish and the valve will be safe to reset
Do NOT activate the toggle switch for more than 5 seconds
2
Maintenance
To ensure a trouble-free long life of your PowerHalt Shut-Off Valve, a scheduled monthly maintenance procedure is
mandatory:
Inspect all fasteners, clamps, and support brackets for tightness and the required torque
Inspect all wiring / cable runs for corrosion, vibration wear, and loose connections
Inspect all hoses for cracks, damage, and leaks
Inspect the PowerGuard controller for damage, dirt, and poor connections
Confirm the green light flashes every 5 seconds when the engine is running
Activate the valve to ensure it remains functional and free moving
Seizing due to lack of use is the #1 failure mode of any shut-off valve in the market. As this is a safety device,
activation testing must be employed at a minimum of once per month.
