Indoor Coil/Drain Pan/Drain Line; Blower Motor & Wheel; Lubrication; Blower Assembly Removal And Replacement - Rheem RHSL-HM1817AA Installation Instructions Manual

12.2 INDOOR COIL - DRAIN PAN - DRAIN LINE
Inspect the indoor coil once each year for cleanliness and clean as necessary. In some
cases, it may be necessary to remove the filter and check the return side of the coil with
a mirror and flashlight.
IMPORTANT: Do not use caustic household drain cleaners, such as bleach, in the con-
densate pan or near the indoor coil. Drain cleaners will quickly damage the indoor coil.
12.3 BLOWER MOTOR AND WHEEL
Inspect the blower motor and wheel for cleanliness. It should be several years before it
would become necessary to clean the blower motor and wheel.
• If it becomes necessary to remove the blower assembly from the unit, see instructions
on removal and disassembly of motor, blower and heater parts.
• The blower motor and wheel may be cleaned by 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 the balance weights (clips) on the blower wheel blades. Do not
drop or bend wheel as balance will be affected.

12.4 LUBRICATION

The blower motor sleeve bearings are pre-lubricated by the motor manufacturer and do
not have oiling ports. Motor should be run for an indefinite period of time without addi-
tional lubrication.

12.5 BLOWER ASSEMBLY REMOVAL AND REPLACEMENT

Removing the blower assembly is not required for normal service and maintenance.
Removal is necessary for replacement of defective parts such as motor, blower wheel.
After extended use, removal of the blower assembly may become necessary for a thor-
ough cleaning of the blower motor and wheel.
WARNING
If removal of the blower assembly is required, all disconnect switches supply-
ing power to the equipment must be de-energized and locked (if not in sight of
unit) so the field power wires can be safely removed from the blower assembly.
Failure to do so can cause electrical shock resulting in personal injury or
death.
• Mark field power supply wiring (for replacement) attached to terminal block or circuit
breaker(s) on blower assembly. Remove wiring from terminal block or circuit break-
er(s).
• Mark low voltage control wiring (for replacement) where attached to unit control pig-
tails on right side of blower housing. Remove wire nuts attaching field control wiring to
unit control pigtails.
• Remove 4 screws holding blower assembly to front channel of cabinet and pull blower
assembly from cabinet.
• To replace blower assembly, slide blower assembly into blower deck. Make sure
blower assembly engages lances in deck properly. If assembly hangs up, check to
make sure top and bottom are lined up in proper locations.
• Slide blower assembly to back of cabinet and make sure it is completely engaged.
• Replace 4 screws holding blower assembly to front channel of cabinet. Take care not
to strip screws, just snug into place.
• Replace low voltage control wiring with wire nuts and make sure wiring is to wiring
diagram and a good connection has been made.
• Replace field power wiring to terminal block or circuit breaker(s) on control area of
blower assembly. Make sure wires are replaced as they were, check wiring diagram if
necessary. Tighten supply power wiring securely to terminals lugs.
• Make sure wiring is within cabinet and will not interfere with access door. Make sure
proper separation between low voltage control wiring and field power wiring has been
maintained.
• Replace blower assembly control access panel before energizing equipment.
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