User guide

Care and Maintenance
Evaporator Coil, Condenser Coil, and
Base Pan Maintenance
NOTE: See Figures 1 and 2 on page 4 for location of air
conditioner components described below.
Outer Case Removal
To inspect and clean base pan, condenser coil, and
evaporator coil, air conditioner chassis must be
removed from outer case. For slide-out chassis models
(12000, and 18000 Btu units), remove front grille, air filter,
and front frame. Slide chassis out of outer case. Refer to
Window Installation instructions for detailed directions.
To remove outer case on 7000 and 9000 Btu models;
1. Remove unit from window.
2. Remove front grille by sliding grille left and pulling
- out. Remove air fitter by sliding left and pulling out.
3. Remove six 5/16 “ screws securing expandable
curtains to outer case. Three screws are located on
each side of outer case. Slide curtain frames away
from outer case until they disengage the top and
bottom rails.
4. Remove 4 screws securing front frame to chassis.
Pull front frame away.
5. Remove six 1/4“ screws securing outer case to air
conditioner base pan. Three screws are located on
each side of case.
6. Remove 1/4" screw securing powersupply cord to
outer case.
7. Remove two 1 /4" screws securing case to control
assembly. One screw is located on each side of
case.
8. Remove two 1 /4" sc rews securi ng back of case to
condenser assembly.
9. 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 air flow through coils. Reduced or
blocked air flow 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 brush to loosen difficult accumulations of dirt.
NOTE: Especially dirty coils may require professional
cleaning. Contact a local Sears Service Center
for professional cleaning.
Inspecting and Cleaning Base Pan
Inspect base pan. Check for dirt, debris, algae build-up in
condensate drain channels, scratches, paint blisters, and
rust spots.
• Vacuum or blow dirt and debris from base pan. Use
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 algicide 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 algicide.
• Use wire brush to remove any rust and loose paint in
base pan. Prime rust spots and bare metal with
quality metal primer before repainting areas with
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
case interior.
Repair scratches, rust, and paint blisters using quality
enamel paint. Before painting, remove loose paint and
rust with wire brush. Prime rust spots and bare metal
with quality metal primer before repainting.