TM 10--3510--221--24
0087 00--1/2 blank
AIR TANK PRESSURE HI
0087 00
THIS WORK PACKAGE COVERS:
Troubleshooting Air Tank Pressure Hi Fault
INITIAL SETUP:
Maintenance Level
Equipment Conditions
Unit
Power must be applied at main control
enclosure (WP 0010 00).
1. Use maintenance menu to start air system (WP 0010 00).
2. Allow air system to pressurize while observing air compressor and operator panel display.
Does air compressor turn off when ”AIR TANK PRESS” reading is 124--125 psig?
YES Go to step 3.
NO Go to step 4.
3. Monitor operator panel display.
Does another ”AIR TANK PRESS HI” message appear?
YES Go to step 4.
NO Return to normal operation.
4. Check relief valve on air tank
Is air venting from relief valve?
YES Go to step 5.
NO Replace relief valve on air tank (WP 0199 00). Go to step 5.
5. Open door on main control enclosure. Verify SW1 and SW2 are ON.
6. Use maintenance menu to stop air system.
7. Open petcock on bottom of air tank. Allow pressure to vent then close petcock.
8. Use maintenance menu to start air system.
9. Allow air system to pressurize while observing operator panel display and LED on SSR PCB4 position 23.
Does LED go off when ”AIR TANK PRESS” reading is 124--125 psig?
YES Check for shorted wire connections between SSR PCB4 and air compressor inverter and
between CB6 and air compressor inverter. Repair as necessary.
NO Check for shorted wire connections between SSR PCB4 and PCB7.
END OF WORK PACKAGE
