CENTAC TROUBLESHOOTING GUIDE
7
CST-TP0007
1994 Ingersoll-Rand Company
Date of issue: January, 1999 Supersedes: 16-dec-94
No Control Power
Cause
Solution
1. POWER ON selector switch OFF.
Turn POWER ON switch to ON.
2. Blown fuse.
Replace fuse.
3. Bad control power transformer.
Replace.
4. Control power transformer wired
incorrectly.
Correct transformer wiring.
Failure to Load
Cause
Solution
1. LOAD selector switch in the wrong
position.
Turn switch to LOAD.
2. Inlet valve stuck.
Investigate and correct.
3. Controller setpoint too low.
Adjust.
4. No control air signal.
Investigate and correct. Check for closed
valve.
5. Surge sensor tripped.
Adjust or replace.
6. Bypass valve will not close.
Investigate and correct.
7. No power air to inlet or bypass valve.
Investigate. Open power air shutoff valve.
8. Valve actuator or positioner
malfunctioning.
Repair or replace.
9. REMOTE/LOCAL switch for CEM in
wrong position.
Turn to REMOTE for CEM operation.
10. Incorrect CLL setting.
Reset to correct value.