TM 5-4310-371-14
TABLE 5-1. DIRECT AND GENERAL SUPPORT TROUBLESHOOTING (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WARNING
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, to avoid personal injury.
Step 1.
Check starter switch to see if all wires are tight to terminal
base.
If there are wires which are not tight to terminal blocks,
tighten terminal screws.
Step 2.
Check to see that switch mechanism of starter switch assembly
works smoothly without sticking.
If starter switch mechanism sticks or jams, replace starter
switch assembly.
4. MOTOR DOES NOT START AT LOW OPERATING POINT OR DOES NOT STOP AT HIGH OPERATING POINT
WARNING
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
WARNING
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, to avoid personal injury.
Step 1.
Check pressure switch to see if any leads are loose or discon-
nected at terminals.
If pressure switch leads are loose or are not connected,
reconnect leads and/or tighten leads.
Step 2
Check to see if pressure switch can still be adjusted.
If pressure switch adjustment mecha nism can not be
adjusted any further replace pressure switch.
Step 3.
Check to see if pressure switch still fails after above inspec-
tion and/or corrective actions.
5-3
