Blower Motor And Wheel Maintenance - Carrier Deluxe 58MVB Service And Maintenance Instructions

COLLECTOR BOX TUBE
COLLECTOR BOX TUBE (GREEN)
INDUCER HOUSING (MOLDED) DRAIN TUBE
(BEHIND COLLECTOR BOX DRAIN TUBE)
COLLECTOR BOX DRAIN TUBE
(BLUE)
FIELD-INSTALLED
FACTORY-SUPPLIED DRAIN TUBE
COUPLING (LEFT DRAIN OPTION)
FIELD-INSTALLED FACTORY-
SUPPLIED DRAIN TUBE
5. Furnaces are equipped with permanent, washable filter(s).
Clean filter by spraying cold tap water through filter in op-
posite direction of airflow.
6. Rinse filter and let dry. Oiling or coating filter is not rec-
ommended.
7. Slide filter into furnace.
8. Recapture filter retaining wire.
9. Replace blower access panel and main furnace door.
10. Turn on electrical supply to furnace.
Step 2—Blower Motor and Wheel Maintenance
To ensure long life, economy, and high efficiency, clean
accumulated dirt and grease from blower wheel and motor
annually.
The inducer and blower motors are pre- -lubricated and require no
additional lubrication. These motors can be identified by the
absence of oil ports on each end of the motor.
The following items should be performed by a qualified service
technician.
Clean blower motor and wheel as follows:
1. Turn off electrical supply to furnace.
2. Remove main furnace door and blower access panel.
3. Disconnect wires
All factory wires can be left connected, but field thermo-
stat connections may need to be disconnected depending
on their length and routing.
4. Position control box, transformer, and door switch assem-
bly to right side of furnace casing.
5. If condensate trap is located in left- - or right- -hand side of
furnace casing, proceed to item 6. Otherwise remove trap
and tubing as described below (See Fig. 5.):
a. Disconnect field drain connection from condensate
trap.
b. Disconnect drain and relief port tubes from condensate
trap.
c. Remove condensate trap from blower shelf.
6. Remove screws securing blower assembly to blower shelf
and slide blower assembly out of furnace. Detach ground
(PINK)
Fig. 5 --- Factory- -Shipped Upflow Tube Configuration
(Shown with Blower Access Panel Removed)
BURNER ENCLOSURE PRESSURE
REFERENCE TUBE ASSEMBLY
CAP
(BLUE & WHITE STRIPED)
CONDENSATE TRAP
FACTORY-SUPPLIED DRAIN
TUBE COUPLING (RIGHT
FIELD-INSTALLED
FACTORY-SUPPLIED
1/2-IN. CPVC STREET
ELBOWS (2) FOR LEFT
wire and disconnect blower motor harness plugs from
blower motor.
NOTE: Blower wheel is fragile. Use care.
7. Clean blower wheel and motor by using a vacuum with
soft brush attachment. Be careful not to disturb balance
weights (clips) on blower wheel vanes. Do not bend wheel
or blades as balance will be affected.
8. If greasy residue is present on blower wheel, remove
wheel from the blower housing and wash it with an ap-
propriate degreaser. To remove wheel:
a. Mark blower wheel location on shaft before
disassembly to ensure proper reassembly.
b. Loosen setscrew holding blower wheel on motor shaft.
NOTE: Mark blower mounting arms and blower housing so
each arm is positioned at the same hole location during
reassembly.
c. Mark blower wheel orientation and cutoff plate
location to ensure proper reassembly.
d. Remove screws securing cutoff plate and remove
cutoff plate from housing.
e. Remove bolts holding motor mounts to blower
housing and slide motor and mounts out of housing.
f. Remove blower wheel from housing.
g. Clean wheel per instructions on degreaser cleaner. Do
not get degreaser in motor.
9. Reassemble motor and blower wheel by reversing items
8b through 8f. Ensure wheel is positioned for proper rota-
tion.
NOTE: Be sure to attach ground wire and reconnect blower
harness plugs to blower motor.
10. Reinstall blower assembly in furnace.
11. Reinstall condensate trap and tubing if previously re-
moved.
a. Reinstall condensate trap in hole in blower shelf.
b. Connect condensate trap drain tubes. See Fig. 5 or
tubing diagram on main furnace door for proper tube
location.
4
PLUG
COLLECTOR BOX
DRAIN TUBE
FIELD-INSTALLED
DRAIN OPTION)
DRAIN OPTION
A05110