TABLE 4-1. ORGANIZATIONAL TROUBLESHOOTING (Cont'd)
TEST OR INSPECTION
4. KNOCKING OR RATTLE DEVELOPS IN COMPRESSOR PUMP
Disconnect compressor unit from main power supply before performing check(s)
or inspection, to avoid personal injury.
Check for loose motor pulley or flywheel.
Tighten motor pulley and flywheel.
Check for loose V belts.
Listen for squeaky V belts.
If V belts squeak, then they have been glazed and should
Check for loose compressor pump mounting nuts and bolts.
Tighten any loose mountings.
Check for lack of oil in compressor pump.
If there should be a lack of oil in compressor pump, fill
Check to make sure oil in compressor pump is correct weight.
If oil weight is incorrect, change oil in compressor pump
Check for any loose connections in tubing, compression fittings,
If any loose connections are found, tighten them.