Service and Parts Manual (2019, 2020, 2021, 2022)

90 PB
R-410A SEALED SYSTEM REPAIR
Replace 9k and 12k Duct Type unit Compressor and Motor
Removal and Assembly of Fan Motor
Step Illustration Handling Instruction
Important: Before removing the fan, make sure power to the system is disconnected.
1. Unplug the motor
cables.
2. Remove the base
board.
Use screwdriver to remove the
electric box cover and unplug the
motor cables in electric box.
Loose and take out the screws
fixing the base board, then remove
the base board.
3. Remove the screws
on fan sub-assembly.
Remove the screws on fan
sub-assembly.
4. Removing the fan
cage enclosure.
Rotate the fan cage housing toward
supply opening and remove.
5. Loosen the fan and
motor.
6. Replace the motor.
Use a hex wrench to loosen the
screws holding the fan cage to the
motor shaft. Remove outer housing
holding motor in place.
7. Reassembly of the
unit.
Remove the motor from the support
bracket. Then remove the fan cages
from the motor shafts. Remove the
motor from the air inlet and replace
with new motor. Be sure to tighten
the cages onto the motor shafts.
Reassemble the unit in the reverse
order of disassembly and test
operation.