Kenmore 70129, 78189, 70089, 78079 owner manual Evaporator Coil, Condenser Coil, Base Pan Maintenance

Care and Maintenance

Evaporator Coil, Condenser Coil, and

Base Pan Maintenance

NOTE: See Figures I 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 unitfrom window.

2.Remove front grille by sliding gdlle left and pulling

-out. Remove air filter by sliding left and pullingout.

3,	Remove six 5/16" screws secudng 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 secudng outer case to air conditioner base pan. Three screws are located on each side of case.

6.Remove 1/4" screw securing power supply cord to outer case.

7.Remove two 1/4" screws sscudng case to control

assembly. One screw is located on each side of case.

8.Remove two 1/4" screws secudng 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 debds 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 professionalcleaning.

Inspecting and Cleaning Base Pan

Inspect base pan. Check for dirt, debds, 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. Pdme rust spots and bare metal with quality metal pdmer 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.