York Single Package Air Conditioner ZF150N54D7A1BAA3A1

Verify that the unit is properly phased at the factory.

Is the blower rotating in the correct direction?

Is the compressor rotating in the correct direction?

Measure the amperage of the scroll compressor.

Is the scroll compressor drawing low amperage?

Are the suction and discharge pressures similar?

Is the scroll compressor producing a high noise level?

Ensure the use of appropriate pipe dope

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

Blow out loose particles from the pipe

Purge all gas lines external to the unit of air before initial start-up

Check that all filters are in place and clean

Are the filters clean and in good condition?

Clean or replace filters if necessary

Ensure filters are installed ahead of evaporator coil

Is the unit operating with filters properly installed?

Ensure panel latches are properly positioned for an airtight seal

Inspect the unit for possible damage during transit

Is there any evident damage on the unit?

Note the extent of the damage on the carrier’s freight bill

Request inspection by the carrier’s agent in writing

Ensure installation complies with all applicable codes

Loosen six nuts (top and bottom) A

Ensure nuts (C) are not loosened

Measure deflection distance using belt tension checker

Enter the deflection force applied

Check belt tension at least two times during the first 24 hours

Re-tighten nuts (A) after adjusting