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1. Shut off unit main power supply. Lock out power supply and
tag disconnect locations.
2. Loosen bolts on mounting bracket so that fan belt can be
removed.
3. Disconnect motor power wires from motor terminals.
4. Remove the 4 motor mounting bolts from bottom of motor.
5. Remove motor. Rest motor securely on a high platform such
as a step ladder. Do not allow motor to hang by its power
wires.
NOTE: Use the same procedure to remove the condenser fan
motor.
Pressure Relief Device
All units are equipped with a fusible-plug type safety relief device
on the refrigerant tubing. The relief setting is 210°F.
Current Protection Device
All units are equipped with a current-sensing lockout relay on
each circuit. This device will lock out the compressor after any
safety trip (high-pressure switch, low-pressure switch, or internal
overload of the compressor for 5 minutes). Check reason for lock
-
out before resetting the device. To reset, turn the thermostat sys
-
tem switch to OFF, then back to COOL position.
High and Low-Pressure Switch
The high-pressure switch is located on the compressor discharge
line. The low-pressure switch is located on the suction line.
Oil Charge
All units are factory charged with oil (see Table 1 for compressor
model number). It is not necessary to add oil unless the compres
-
sor is removed from the unit. If additional oil is needed, do not use
mineral oils. Only synthetic oils are satisfactory.
