Lennox Cooling Unit LCH048

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 condition of the all-aluminum coils

Are the all-aluminum coils clean and free of debris?

Inspect the condition of the fin/tube coils

Are the fin/tube coils clean and free of debris?

Examine burner flames for proper appearance during the heating season

Examine 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 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?

Ensure the building is unoccupied before starting the filter replacement.

Verify the correct filter size using table 32.

Select the unit type and corresponding filter size

Remove the temporary filters from the unit.

Install the approved filters as per local codes or jurisdiction.

Have all temporary filters been replaced with approved filters?