Bryant SM03-4 Service Manual page 42

"
1
1 ⁄
8
GROMMET
Fig. 34—FF1A/FF1B/FF1C Motor, Inlet Ring, and Blower Wheel Assembly
WARNING: As with any mechanical equipment, per-
sonal injury can result from sharp metal edges. Be careful
when removing parts.
A. Air Filter
To clean or replace air filter, grasp it at bottom and lift it out of
unit. Clean filter using cold water. Rinse clean and let dry. Oiling
or coating of filter is not required. To replace, stand filter in rack
with binding facing coil. Press top edge under access panel.
NOTE: Steel rods in filter prevent it from being pulled into coil.
Retain these rods and reinstall after cleaning or before replacement
if new filter is used.
CAUTION: Never operate unit without a filter.
B. Cooling Coil, Drain Pan, and Condensate Drain
The cooling coil is easily cleaned when it is dry. Inspect coil and
clean (if necessary) before each cooling season. To check or clean
cooling coil, remove blower/heater access panel to gain full access
to cooling coil. If coil is coated with dirt or lint, vacuum with a soft
brush attachment.
Be careful not to bend coil fins. If coil is coated with oil or grease,
clean it with a mild detergent-and-water solution. Rinse coil with
clear water. Be careful not to splash water onto insulation.
Inspect drain pan and condensate drain at same time cooling coil
is checked. Clean drain pan and condensate drain by removing any
foreign matter from pan. Flush pan and drain tube with clear water.
If drain tube is restricted, it can generally be cleared by high-
pressure water. Cut plastic line and work outside condensate pan
and away from coil to clear drain tube.
NOTE: There MUST be a trap in condensate line. Trap must be
at least 3-in. deep, not higher than the bottom of unit condensate
drain opening, and pitched downward to an open drain or sump.
MOTOR
C. Blower Motor and Wheel
Clean blower motor and wheel when cooling coil is cleaned.
To clean or service wheel or motor, proceed as follows:
NOTE: Further disassembly of motor and mount is not necessary
as adequate clearance is available to clean motor.
To reassemble unit, proceed as follows:
—42—
CAUTION: Do not use caustic household drain cleaners
in condensate pan or near coil. Drain cleaners can quickly
destroy coils.
1. Pull unit disconnect (when used) and remove blower access
panel.
2. Disconnect motor electrical leads from control box and
capacitor. Mark location of wires for reassembly.
3. Remove 3 bolts holding motor mount to blower housing
while supporting motor shell with hand.
4. Pull motor inlet ring and blower wheel assembly out of
blower housing.
5. With blower wheel, inlet ring, and motor mount still
attached to motor, place motor on flat, horizontal surface,
shaft up. Mark position of wheel on motor shaft for
reassembly.
6. Loosen blower wheel setscrew and remove blower wheel
from motor shaft.
7. Clean blower motor and wheel using a vacuum with a soft
brush attachment. Remove grease with a mild solvent such
as hot water and detergent. Be careful not to disturb balance
weights (clips) on blower wheel vanes. Do not drop or bend
wheel as balance will be affected.
1. Place motor with mount attached on flat, horizontal surface
with shaft up.
2. Set inlet ring on top of motor mount grommets. Center inlet
ring flush on all 3 grommets.
BLOWER
WHEEL
INLET
RING
A86006