Quincy Rotary Screw Belt Drive Air Compressor QSB-25-HP-W

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 backing off nut (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

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

Ensure maintenance is performed by trained and qualified technicians only.

Wait for the unit to cool before starting service.

Clean up fluid spills immediately to prevent slipping.

Loosen, but do not remove, flange or component bolts to check for residual pressure.

Use safety solvents for cleaning air filters or compressor parts.

Monitor all gauges and indicators for normal operation.

Check fluid level on the dial gauge or sight gauge.

Removal of Old Electronic Control

Remove screws attaching control to door of enclosure

Remove and discard wire tie-wraps

Preparation for New Installation

Identify individual wire location before removing any wiring

Refer to the electrical wiring diagram

Installation of New Electronic Control

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