TABLE 5-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (Cont'd)
TEST OR INSPECTION
Check to see if safety valve is malfunctioning.
If safety valve is malfunctioning constantly, remove and
11. MOTOR INCAPABLE OF TURNING COMPRESSOR PUMP
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, to avoid personal injury.
Release pressure from air receiver and compressor pump before inspection,
performing procedures or disassembly of equipment to avoid personal injury.
Check to see that compressor pump can be turned by hand.
If compressor pump cannot be turned by hand, it may be
due to back pressure leaking through check valve from
air receiver. Remove and replace check valve.