Carrier 50HQ - Manual (Page 12)

Indoor Fan Wheel should be centered in housing.
To adjust fan, loosen setscrew holding fan to
motor shaft. Adjust fan and retighten setscrew.
50VQ INDOOR BLOWER ASSEMBLY
REMOVAL
1. Remove fan section access panel.
2. Remove power wires from Molex plug.
3. Place a spacer beneath blower housing for
support.
4. Remove blower assembly mounting bracket.
(Rear flange on top of blower housing and
spacer now hold blower assembly in place.)
5. Support blower housing at bottom and remove
spacer. Tilt blower assembly downward and lift
out of unit.
50HQ INDOOR BLOWER ASSEMBLY
REMOVAL
1. Remove top cover (Fig. 2).
2. Remove power wires from Molex connector
(Fig. 7).
3. Remove blower assembly mounting screws from
base unit (Fig. 2).
4. Lift blower assembly out of unit.
Indoor Fan and Motor Removal
1. Remove blower assembly from unit.
2. Remove Molex plug from bracket on fan
housing.
3. Loosen setscrew holding fan to motor shaft.
4. Loosen motor mounting band and remove
motor.
5. Remove fan cutoff plate from blower housing
outlet.
6. Remove fan wheel from blower housing outlet.
Clean Indoor Fan Wheel — When coil is cleaned,
remove caked-on dirt from fan wheel and housing
with brush; remove grease with mild solvent. When
replacing blower assembly, make sure fan wheel is
centered in housing.
Return Air Filter — Replace filter media 4 times a
year. For other types of filters, refer to filter manu­
facturer’s instructions as required.
C.AUTION; Never operate unit without a filter
as coii will plug and dama^ to fan tnoior may
result.
Heat Exchanger — If excessive discharge pressure
is experienced with normal water flow, the heat
exchanger tubes may be fouled and require cleaning.
Contact a local water treatment firm for details on
chemical cleaning.
12