Lennox Cooling Unit LCH060

Spray the coil steadily and uniformly from top to bottom with water

Ensure water pressure does not exceed 900 psi

Ensure spray angle does not exceed 45 degrees

Ensure nozzle is at least 12 inches from the coil face

Check for fractures between the fins and refrigerant tubes

Reduce pressure and work cautiously to prevent damage

Clean condenser coil with detergent or commercial coil cleaner

Inspect the evaporator coil for dirt and debris

Clean the coil using mild detergent or commercial coil cleaner

Flush the condensate drain with water

Ensure the following are not wet during flushing

Is the coil clean and free of debris after maintenance?

Ensure the unit is not in operation before starting the filter replacement.

Verify the correct filter size from table 32.

Remove the temporary filters from the unit

Install the approved filters according to local codes or appropriate jurisdiction

Is the filter securely installed?

Examine burner flames for proper appearance during the heating season.

Check burners for any deposits or blockage before each heating season.

Turn off both electrical power and gas supply to unit.

Remove two screws securing burners to burner support and lift the burners from the orifices.

Inspect the condition of all-aluminum coils

Is there any visible debris on the all-aluminum coils?

Clean the all-aluminum coils if debris is present

Inspect the condition of fin/tube coils

Is there any visible debris on the fin/tube coils?

Clean the fin/tube coils if debris is present