Trane Packaged Rooftop TSC048

Warning: This maintenance check requires trained personnel with PPE!

Airflow through the unit is adequate for proper sampling by the return air smoke detector?

If airflow is not adequate, report the issues to the maintenance team and stop the procedure

Adherence to the maintenance procedures, including recommended intervals between filter changes, and coil cleaning is maintained?

If maintenance procedures are not adhered to, report the issues to the maintenance team and stop the procedure

Smoke detector is functioning properly?

If smoke detector is not functioning properly, report the issues to the maintenance team and stop the procedure

Sign off on the monthly return air smoke detector maintenance

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

WARNING! Hazardous Chemicals! Coil cleaning agents can be either acidic or highly alkaline and can burn severely if contact with skin occurs. Handle chemical carefully and avoid contact with skin.

ALWAYS wear Personal Protective Equipment (PPE) including goggles or face shield, chemical resistant gloves, boots, apron or suit as required.

For personal safety refer to the cleaning agent manufacturer’s Materials Safety Data Sheet and follow all recommended safe handling practices.

Failure to follow all safety instructions could result in death or serious injury.

Remove enough panels from the unit to gain access to the coil.

Protect all electrical devices such as motors and controllers from any over spray.

Straighten any bent coil fins with a fin comb.

Mix the detergent with water according to the manufacturer’s instructions. If desired, heat the solution BUT DO NOT EXCEED 150oF maximum to improve its cleansing capability.

WARNING! Hazardous Pressures! Coils contain refrigerant under pressure.When cleaning coils, maintain coil cleaning solution temperature under 150°F to avoid excessive pressure in the coil. Failure to follow these safety precautions could result in coil bursting, which could result in death or serious injury.

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

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;