SECTION IV. UNIT TROUBLESHOOTING PROCEDURES
4-9. UNIT TROUBLESHOOTING PROCEDURES.
Unit troubleshooting procedures listed in Table 4-2 cover the most common malfunctions that may be repaired at the unit
level. Repair or adjustment requiring specialized equipment is not authorized unless such equipment is available.
Troubleshooting procedures used by the operator should be conducted in addition to the unit troubleshooting procedures.
This manual cannot list all the possible malfunctions or every possible test/inspection and corrective action. If a
malfunction is not listed or corrected by a listed corrective action, notify your supervisor.
Table 4-1. Symptom Index
No electrical power to laboratory (generator output switch on and power cable properly connected).
Fluorescent light bulb fails to light (other bulbs in fixture light).
Emergency light fails to come on when normal power is lost.
No power available in Petroleum Laboratory (purge cycle took place and circuit breaker A1CB1 placed in ON
A group of ceiling lights fail to operate (all other ceiling lights operate).
Door interlock (micro) switch does not operate properly.
Convenience outlet (receptacle) inoperative.
A/C (ECU) remote control unit fails to operate properly (power available).
Environmental Control Unit fails to operate properly (power available).
Purge damper (intake, exhaust, or ECU intake) fails to operate.
Purge door limit switch fails to operate.
Air compressor motor fails to run (power available to motor controller).
Leaks in system cause compressor to cycle on and off.
Air pressure switch causing compressor to cycle on and off.
Vacuum pump motor fails to run (power available to motor controller).