10
Evaporator Coil, Condenser Coil, and Base
Pan Maintenance
NOTE: See Component Identification section of manual
for location of parts described in following
paragraphs.
Outer Case Removal
To inspect and clean base pan, condenser coil, and
evaporator coil, air conditioner outer case must be
removed from chassis. To remove outer case on large
chassis air conditioners, refer to the installation
instructions shipped with the unit.
To remove outer case from small and mini chassis units:
1. Remove air filter and set aside.
2. Remove control knobs by pulling knobs straight out.
3 Remove screws securing front frame to air conditioner
chassis.
On small chassis units, pull front frame out and away
from air conditioner.
On mini chassis units, release “locking tabs” securing
right and left sides of frame to outer case by gently
but firmly pushing frame in one direction and outer
case in opposite direction. (For example, to release
right side of frame, push frame to the right while
pushing case left.)
When both sides of frame are released, lift frame to
release top tabs, then pull frame out and away from
chassis.
4. Remove screws securing outer case to air conditioner
base pan.
5. Remove screws securing top of case to partition
panel.
6. Remove screws securing sides of case to partition
panel.
7. Remove screws securing rear of case to condenser
coil.
8. Lift outer case off chassis.
Inspecting and Cleaning Coils
Inspect evaporator and condenser coils. Check for bent
fins and accumulations of dirt or other debris that may
reduce or block airflow through coils. Reduced or blocked
Care and Maintenance
airflow affects air conditioner efficiency and can lead to
premature compressor failure.
Attempt to straighten bent fins by “combing” fins with a
fine tooth comb. Vacuum or blow dirt and debris from
coils. Use a brush to loosen difficult accumulations of dirt.
Inspecting and Cleaning Base Pan
Inspect base pan. Check for dirt and debris, algae build-
up in condensate drain channels, scratches, paint
blisters, and rust spots.
• Vacuum or blow dirt and debris from base pan. Use a
brush to loosen difficult accumulations of dirt.
• If algae build-up is present, clean with sponge or cloth
dampened with warm soapy water.
NOTE: Placing an algaecide in outdoor side of base pan
may reduce or eliminate problem of algae build-
up. For best results, thoroughly clean base pan of
old algae before using an algaecide.
• Use a wire brush to remove any rust and loose paint in
base pan. Prime rust spots and bare metal with quality
metal primer, then repaint areas using quality enamel
paint.
Outer Case Maintenance
Inspect outer case. Check for scratches, paint blisters,
and rust on both inside and outside of case.
NOTE: Remove chassis from outer case to inspect
interior of outer case.
Repair scratches, rust, and paint blisters using a quality
enamel paint. Before painting, remove any loose paint and
rust with a wire brush. Prime rust spots and bare metal
with quality metal primer before repainting.
Fan Motor
The fan motor is permanently lubricated. Never add oil to
the motor.
(1 Seiten)
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