Air Dryers—A-4400 Series Technical Bulletin
21
To replace the condenser fan motor, refer to Figure 12 and proceed as follows:
1.
Disconnect the power supply to the air dryer.
2.
Remove the cover mounting screws and take the cover off the unit.
Retain screws for reassembly.
3.
Remove the cable tie securing the cord to the protecting screen.
4.
Working from underneath the cabinet and using a 3/8 in. wrench, remove
the two mounting screws that secure the fan assembly to the cabinet base.
Retain screws for reassembly.
5.
Slide the fan motor assembly out of the cabinet.
6.
Noting the orientation of the fan blade, use a pliers to loosen and remove
the fan blade retaining nut and the fan blade. Retain parts for reassembly.
7.
Using a wire cutter, cut the two leads in a convenient location.
8.
Using a 1/4 in. wrench, loosen and remove the two motor mounting
screws and the fan motor support “L” bracket. Retain the screws and
bracket for reassembly.
9.
Noting the orientation of the motor and its leads, peel the old fan motor
off of the protecting screen, leaving as much of the black vibration
dampening tape behind as possible.
10. Install the replacement fan motor (A-4300-601 ordered separately) in the
same orientation noted in Step 9.
11. Secure the motor and the fan motor support “L” bracket to the mounting
bracket using the screws retained in Step 8.
12. Using a cable tie (field furnished), secure the motor leads to the
protecting screen to keep the motor leads away from the fan blades
during operation.
13. Reassemble the fan blade to the motor in the same orientation noted in
Step 6, and secure it in place using the fan blade retaining nut.
14. Slide the fan motor assembly into the cabinet, over its base mounting
location.
15. Secure the fan motor assembly to the cabinet base using a 3/8 in. wrench
and the mounting screws retained in Step 4.
Condenser
Fan Motor
Replacement
