PM Service and Repair

AIRSYS WPU Part Replacement Procedures
Download the attached file for part replacement instructions for AIRSYS WPUs. Individual articles for each component can be foundĀ in the PM Service and Repa...
Wed, 28 Feb, 2018 at 3:49 PM
Evaporator Fan Replacement Procedure
Shut off the power to the WPU. Remove the bottom left and right panels. Remove the wire junctions. Place a board or a metal sheet against the evaporato...
Wed, 28 Feb, 2018 at 1:00 PM
Condenser Fan Replacement Procedure
Shut off the power to the WPU. Remove the wiring cover from the condenser fan. Disconnect the wiring to the condenser fan (3 wires) Loosen the 4...
Thu, 1 Feb, 2018 at 1:03 PM
Evaporator Coil Replacement Procedure
Shut off power to the WPU. Remove the bottom front, bottom left, and bottom right panels. Remove the wire junctions to the evaporator fan. Remove the 6...
Wed, 28 Feb, 2018 at 1:03 PM
Condenser Coil Replacement Procedure
Shut off power to the WPU. Remove the middle front, upper front, upper left, and upper right side panels. Remove the wiring cover from the condenser fan....
Wed, 28 Feb, 2018 at 1:04 PM
Electric Heating Element Replacement Procedure
Shut off the power to the WPU. Remove the bottom left and bottom right panels. Disconnect the wiring from the heater. Loosen the nuts on both si...
Thu, 1 Feb, 2018 at 1:59 PM
Damper Actuator Replacement Procedure
Shut off the power to the WPU. Remove the damper cover. Loosen the nuts securing the actuator to the damper shaft. Remove the damper actuator. Disco...
Wed, 28 Feb, 2018 at 1:04 PM
Air Pressure Differential Switch Replacement Procedure
Open the electrical panel. Take off the cover and disconnect the contacts. Cut the zip ties securing the air tubes to the switch. Replace the sw...
Wed, 28 Feb, 2018 at 1:05 PM
Thermal Expansion Valve Replacement Procedure
Shut off power to the WPU. Remove the bottom front panel. Remove the valve core from the valve. Place a wet cloth around the copper tube near the therm...
Wed, 28 Feb, 2018 at 1:05 PM