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

Ensure maintenance is performed by trained and qualified technicians only.

Is there any unusual noise or vibration from the compressor?

Wait for the unit to cool before starting service.

Clean up any fluid spills immediately.

Initial Checks and Preparations

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

Ensure no flammable solvents are used for cleaning air filters or compressor parts.

Remove 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

Ensure the Belt Tension Tester (P/N 142645) is available

Rotate pulleys a minimum of 2 revolutions before taking measurements

Find amount of deflection force on the upper scale of the tension tester

Is the deflection force within the recommended range?

Tighten belts if deflection force is less than minimum recommended

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

Trace wires from transducer to the microprocessor

Disconnect transducer wires at microprocessor

Remove transducer from Teflon bushing