Quincy Rotary Screw Belt Drive Air Compressor QSB-40-HP-A

Lock out and tag out the electrical power supply

Remove panels and guards to gain access to belt drive area

Release tension on belts by loosening locknut (1) and backing off jackbolt (2)

Remove existing belts (and discard, if replacing)

Check sheaves for nicks, wear, and misalignment before reinstalling belts

Inspect new (or used) belts for defects or damage before installation

Ensure maintenance is performed by trained and qualified technicians only.

Is the unit cool before starting service?

Clean up any fluid spills immediately to prevent slipping.

Are flange or component bolts loosened but not removed?

Is a safety solvent used for cleaning air filters or compressor parts?

Is the air filter serviced as needed?

Inspect for dirt in the following areas

NOTICE: Maintenance should be performed by trained and qualified technicians only.

CAUTION: Unusual noise or vibration indicates a problem. Do not operate the compressor until the source has been identified and corrected.

Wait for the unit to cool before starting service. Temperatures may exceed 180°F when the compressor is operating.

Clean up fluid spills immediately to prevent slipping.

Loosen, but do not remove, flange or component bolts. Carefully pry apart to be sure there is no residual pressure before removing bolts.

Never use a flammable solvent such as gasoline or kerosene for cleaning air filters or compressor parts.

Safety solvents are available and should be used in accordance with their instructions.

Check roll pin indicator position in slot and replace V-belts if at or near allowable travel.

Belt Drive Inspection Procedure

Remove the screws attaching control to door of enclosure

Remove and discard wire tie-wraps

Identify individual wire location before removing any wiring from the electronic control

Refer to the electrical wiring diagram

Install new electronic control panel

Install wiring in accordance with electrical wiring diagram

Disconnect conduit from elbow of probe

Cut wires and remove probe from the discharge end of the airend

Install new probe into discharge tube

Connect wires of new probe to existing wires using suitable splice and insert into conduit

Connect conduit to elbow of probe