Quincy Rotary Screw Belt Drive Air Compressor QSB-50-HP-W

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

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.

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

Use safety solvents for cleaning air filters or compressor parts.

Locate pressure transducer in the upper left-hand corner of the panel

Trace wires from transducer to the microprocessor

Disconnect transducer wires at microprocessor

Remove transducer from Teflon bushing

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

Rotate pulleys a minimum of 2 revolutions before taking measurements

Apply force and measure deflection force on the upper scale of the tension tester

Is the deflection force within the recommended range?

Adjust belt tension if deflection force is not within the recommended range

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