TABLE 4-1. ORGANIZATIONAL TROUBLESHOOTING (Cont'd)
TEST OR INSPECTION
Check setting of pressure switch.
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.
Disconnect compressor unit from main power supply before servicing, replacing
or repairing parts of equipment, 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 oil level in compressor pump.
If oil level is low, fill to correct level as described
Check to make sure oil in compressor pump is correct weight.