York Single Package Air Conditioner ZR102N15A2AAA50124A

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

Blow out loose particles from the piping.

Have all gas lines external to the unit been purged of air?

Verify factory phasing of Predator® units

Is the blower rotating in the correct direction?

Is the compressor rotating in the correct direction?

Is the electrical connection to the unit misphased?

Change the phasing of the Field Line Connection at the factory or field supplied disconnect to obtain proper rotation

Is the scroll compressor drawing low amperage?

Ensure all necessary safety equipment is worn

Verify that a special pipe dope is used for assembling pipes

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

Use a commercially available soap solution to check all joints for leaks

Loosen six nuts (top and bottom) A

Ensure nuts (C) are not loosened

Use belt tension checker to apply a perpendicular force to one belt at the midpoint of the span

Enter the deflection distance obtained

Enter the deflection force applied

Was the belt tension checked at least two times during the first 24 hours of operation?

Did any retensioning fall between the min. and max. deflection force values?

Adjust blower speed to specific static and CFM requirements

Adjust belt tension as required

Tighten blower pulley set screws

Tighten motor sheave set screws

Re-check set screws after 10-12 hours of run time