York Single Package Cooling Unit ZE060E05B2A1ABA1B1

Check that all filters are in place and clean

Clean or replace filters if necessary

Are the filters installed ahead of the evaporator coil?

Inspect evaporator coil for frost or damage

Is the unit operating with filters properly installed?

Close main manual shut-off valve

Shut off all electric power to the unit

Remove screws holding manifold to burner supports

Open union fitting in gas supply line

Remove gas piping closure panel

Disconnect wiring to gas valves and spark ignitors

Remove manifold-burner gas valve assembly

Use special pipe dope for assembly

Clean piping of dirt and scale by hammering on the outside of the pipe

Blow out loose particles from the pipe

Ensure all gas lines external to the unit have been purged of air

Check for proper compressor rotation

Inspect electrical connection for misphasing

Change the phasing of the Field Line Connection if necessary

Verify scroll compressor operation

Ensure proper supply air blower rotation

Check line voltage at the unit point of power connection for misphasing

Ensure no open flames are present in the area.

Use only approved pipe dope for assembling pipes.

Open the main shut-off valve to admit normal gas pressure to the mains.

Check all joints for leaks using a soap solution or other suitable material. Ensure the following joints are checked:

Were any leaks detected during the inspection?

If leaks were detected, were they repaired?