Trane Split System Cooling Condenser TTA120F

Preparation and Safety Precautions

Ensure all electrical connections are complete before starting the procedure.

Is the compressor access panel installed and manifold hoses routed through refrigerant gauge access holes?

Verify that a qualified licensed electrician is present for handling live electrical components.

Turn on power to the unit and allow the system to run for 5 to 10 minutes to stabilize operating conditions.

Airflow and Refrigerant Charging

Measure airflow across the indoor coil.

Is the airflow measurement within the fan performance data specifications?

WARNING: Hazardous Voltage w/Capacitors!

Disconnect all electric power and discharge capacitors

Verify with a voltmeter that all capacitors have discharged

Check unit wiring for tight connections

Ensure wiring insulation is intact

Ensure only dry nitrogen with a pressure regulator is used for pressurizing unit.

Confirm no use of acetylene, oxygen, or compressed air for pressure testing.

Verify no use of open flame for gas leak detection.

Pressurize the system through the service valve with dry nitrogen to 200 psi.

Ensure all field joints are leak free using soap bubbles or other methods

If leaks are found, release pressure, repair, and repeat leak test.

Disconnect all electric power, including remote disconnects.

Discharge all motor start/run capacitors.

Follow lockout/tagout procedures.

Verify with a voltmeter that all capacitors have discharged.

Perform all monthly maintenance inspections.

Check unit superheat and record the reading in the Maintenance Log.

Disconnect all electric power, including remote disconnects, and discharge all motor start/run capacitors.

Follow proper lockout/tagout procedures.

Verify with a voltmeter that all capacitors have discharged.

Remove enough panels from the unit to gain safe access to coils.

Straighten any bent coil fins with a fin comb.

Remove loose dirt and debris from both sides of the coil with a soft brush.