Trane Packaged Rooftop TSC048AW

WARNING! Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

Before completing the following checks, turn the unit OFF and lock the main power disconnect switch open.

Inspect the return air filters.

Clean or replace them if necessary.

Sign off on the filter maintenance

Airflow through the unit is affected by the amount of dirt and debris accumulated on the indoor coil and filters

Is the airflow through the unit adequate for proper sampling by the return air smoke detector?

To insure that airflow through the unit is adequate for proper sampling by the return air smoke detector, complete adherence to the maintenance procedures, including recommended intervals between filter changes, and coil cleaning is required

Have the maintenance procedures been adhered to, including recommended intervals between filter changes, and coil cleaning?

Periodic checks and maintenance procedures must be performed on the smoke detector to insure that it will function properly;

Has the smoke detector been checked and maintained to ensure it functions properly?

Sign off on the monthly return air smoke detector maintenance

NOTICE! Coil Damage! DO NOT use any detergents with microchannel condenser coils. Use pressurized water or air ONLY, with pressure no greater than 600psi. Failure to do so could result in coil damage. For additional information regarding the proper microchannel coil cleaning procedure, refer to RT-SVB83*-EN

Due to the soft material and thin walls of the MCHE coils, the traditional field maintenance method recommended for RoundTube Plate Fin (RTPF) coils does not apply to microchannel coils

Moreover, chemical cleaners are a risk factor to MCHE due to the material of the coil.The manufacturer does not recommend the use of chemical cleaners to clean microchannel coils. Using chemical cleaners could lead to warranty claims being further evaluated for validity and failure analysis

The recommended cleaning method for microchannel condenser coils is pressurized water or air with a non-pinpoint nozzle and an ECU of at least 180 with pressure no greater than 600 psi.To minimize the risk of coil damage, approach the cleaning of the coil with the pressure washer aimed perpendicular to the face of the coil

Note: For more details on Microchannel coil cleaning, please refer to bulletin RT-SVB83*-EN

Did you follow the recommended cleaning method for microchannel condenser coils?

Regular coil maintenance, including annual cleaning, enhances the unit’s operating efficiency by minimizing: compressor head pressure and amperage draw; evaporator water carryover; fan brake horsepower, due to increase static pressure losses; airflow reduction.

At least once each year, or more often if the unit is located in a “dirty” environment, clean the evaporator and condenser coils using the instructions outlined below. Be sure to follow these instructions as closely as possible to avoid damaging the coils.

Note: For units equipped with hail guards follow removal procedure listed below.

Pull the top of the hail guard outward until the fastener studs are free of the retaining nuts

Lift the hail guard from the lower retaining bracket and set aside

To clean refrigerant coils, use a soft brush and a sprayer (either a garden pump-up type or a high-pressure sprayer).

If the detergent selected is strongly alkaline (ph value exceeds 8.5), did you add an inhibitor?

Check the unit’s drain pans and condensate piping to ensure that there are no blockages

Inspect the evaporator and condenser coils for dirt, bent fins, etc. If the coils appear dirty, clean them according to the instructions described in “Coil Cleaning” later in this section

Manually rotate the condenser fan(s) to ensure free movement and check motor bearings for wear. Verify that all of the fan mounting hardware is tight

Inspect the F/A-R/A damper hinges and pins to ensure that all moving parts are securely mounted. Keep the blades clean as necessary

Verify that all damper linkages move freely; lubricate with white grease, if necessary

Check supply fan motor bearings; repair or replace the motor as necessary

Check the fan shaft bearings for wear. Replace the bearings as necessary

Check the supply fan belt. If the belt is frayed or worn, replace it. Refer to the “Fan Belt Adjustment” section for belt replacement and adjustments

Verify that all wire terminal connections are tight