Trane Packaged Rooftop TSC060A4

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?

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;

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

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