Fan Motors - Carrier R-22 Application Manual And Service Manual

Speedup
Pins
This control has the option of shutting down the compressor for 30
seconds while going into and out of defrost modes. This is
accomplished by turning DIP switch 3 to the ON position. See Fig.
22 for switch position. Factory default is in the OFF position.
Five-Minute Time Delay
This control has a 5–minute time delay on startup. The speedup
terminals can be used to bypass this delay. Momentary shorting
across the speedup terminals will, upon release, bypass 5–minute
time delay. Do not short out the speedup terminals for more than
5 seconds, or defrost mode will be initiated.
Troubleshooting
Troubleshooting this control is done in the same manner as the
CES0130063 control with the exceptions listed above.
DEFROST THERMOSTAT LOCATION
On most residential, outdoor heat-pump models, the defrost
thermostat is located on the return-bend side of the coil. The 5/16
OD feeder tube from the header will enter a 1–1/2 in. to 2–in. long
3/8 OD stub prior to entering the coil. There is only one stub tube
per coil. All other feeder tubes enter the coil directly. The defrost
thermostat attaches to this stub tube. (See Fig. 23.)
Step 10—Fan Motors
Fan motor rotates the fan blade that either draws or blows air
through outdoor coil to perform heat exchange. Motors are totally
enclosed to increase reliability. This also eliminates need for rain
shield. For the correct position of the fan blade assembly, see Fig.
24 and Table 13.
Quiet Defrost interval
Shift DIP switches
Fig. 22—Defrost Control
22
CESO130076–00
FEEDER TUBE
Fig. 23—Defrost Thermostat Location
Turn off all power to unit before servicing or replacing fan
motor. Be sure unit main power switch is turned off. Failure
to do so may result in electric shock, death, or injury from
rotating fan blade.
The bearings are permanently lubricated; therefore, no oil ports are
provided.
A99442
STUB TUBE
DEFROST
THERMOSTAT
A97517