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TM 5-4120-393-14
5-7. Condenser Fan Motor (B2) (Welco Industries Model)
This task covers:
a. Repair
b. Disassembly
Initial setup.
Tools:
Tool kit, service, refrigeration unit NSN 5180-00-596-1474
Personnel: 1
Materials:
Solder (Appendix E, item 3)
Oil (Appendix E, item 14)
Equipment condition:
1.  Turn unit power off at power source. If there is a chance that it will be turned on, also disconnect power cable
to air conditioner.
2.  Remove motor. See para 4-60.
General Safety Instructions:
WARNING
Disconnect input power to the air conditioner before performing any internal
maintenance. Voltages used can KILL. Shutting the unit off at the control panel
does not disconnect unit power.
NOTE
For testing, removal, and installation see para 4-60.
REPAIR
Intermediate Direct Support Maintenance repair of the evaporator fan motor is limited to the replacement of the electrical
plug, thermostat, and bearings.
DISASSEMBLY
1.
Check to be sure power has been disconnected from air conditioner. Shutting the unit off at the control panel does
not disconnect power to compressor heaters.
2.
To replace connector (1):
a.
Using screwdriver, remove four screws (2) from terminal box cover (3).
b.
Remove cover (3).
c.
Remove four screws (4) from connector (1).
d.
Pull connector (1) away from terminal box as far as wires will allow.
5-13

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