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UNT-SVX07A-EN 69
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.