Trane UniTrane Fan-Coil & Force Flo Air Conditioners manual maintenance, Maintenance procedures

maintenance

Maintenance procedures

Fan Board Assembly Removal Follow the procedure below when replacing the coil or making repairs to the fan or motor.

WARNING

Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury.

Vertical Units

1.Remove the front panel of cabinet and recessed units.

2.Pull the main and overflow drain hoses of the main drain pan into the inside of the fan-coil chassis end panel.

3.Remove the two fanboard mounting screws.

4.Slide the fanboard out horizontally to remove.

Horizontal Units

1.Open the bottom panel of cabinet and recessed models.

2.Remove the main drain pan following the instructions given under the drain pan section above for horizontal fan-coil units.

3.While supporting the fanboard in place,

remove the two fanboard mounting screws which secure the fanboard to the unit.

CAUTION

Heavy Object!

Support the fanboard when removing it from the unit. Failure to properly support fanboard may result in minor to moderate personal injury.

Replacing the Motor

The capacitor for all unit motors can be replaced should it fail. Contact the local Trane service department to replace the motor capacitor in the event it fails.

However, the motor itself cannot be repaired or rewound. If the motor fails, record the model number from the unit nameplate and present to the local Trane Service Parts Center to purchase a replacement. The motor bearings are permanently lubricated and do not require any further oiling.

After removing the fanboard assembly from the unit, disconnect the fan wheel/ wheels from the motor shaft by loosening the Allen head setscrew on the fan wheel hub collar. Next, remove the mounting bolts holding the fan motor plate to the mounting bracket of the fanboard. Then remove the motor by sliding the fan shaft from the fan wheel hub.

During re-assembly, make certain the fan wheel(s) is/are properly centered in the fan housing to prevent the fan wheel from contacting the housing on either side. After the unit has been re-as- sembled, verify that no unusual noise or vibration is present at startup.

Control Device Replacement

To order control components such as relays, contactors, transformers, low temperature detection devices, condensate overflow detection devices, differential pressure switches, sensors, control valves and actuators, contact the local Trane Service Parts Center. To order, the Trane parts center will need the unit model number (which can be found on the unit nameplate), the serial number, and the part name or ID.

UNT-SVX07A-EN 69