TM 5-4610-218-12
Troubleshooting-Continued
Table 4-2.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Tighten a loose impeller.
Replace a broken impeller.
Check for worn bearings.
Step 3.
Replace defective bearings.
Check for a defective seal assembly.
Step 4.
Replace seal assembly.
15.
MAGNETIC MOTOR STARTERS WILL NOT OPERATE.
Step 1.
Check for burned or corroded contacts.
Replace contact set, paragraph 4-34.
Check for weak or broken springs.
Step 2.
Replace contact set, paragraph 4-34.
Step 3.
Check for burned out overload relay.
Replace overload relay, paragraph 4-34.
Check for defective coil.
Step 4.
Replace coil, paragraph 4-35.
Check for burned or cracked insulation between contactor,
Step 5.
overload relay, and auxiliary contacts.
Replace insulation.
Step 6.
Check for broken or cracked contact and terminal support.
Replace contact and terminal support.
4-51
