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WeatherMaker® Single-Packaged Rooftop Units 50 A: Monthly Maintenance

This procedure contains the monthly cleaning and maintenance of your unit. It has instructions for the Periodic Clean Water Rinse and Routine Cleaning of Evaporator Coil Surfaces.
MaintainX
10/24/2021

WeatherMaker® Single-Packaged Rooftop Units 50 A: Monthly Maintenance

This procedure contains the monthly cleaning and maintenance of your unit. It has instructions for the Periodic Clean Water Rinse and Routine Cleaning of Evaporator Coil Surfaces.

    Periodic Clean Water Rinse

    A periodic clean water rinse is beneficial for coils in coastal or industrial environments. However, it is important that the water rinse is made with very low velocity water stream to avoid damaging the fin edges. Monthly cleaning as described below is recommended.

    Routine Cleaning of Coil Surfaces

    Monthly cleaning with Totaline® environmentally balanced coil cleaner is essential to extend the life of coils. This cleaner is available from Carrier Replacement parts division as part num- ber P902-0301 for a one gallon container, and part number P902-0305 for a 5 gallon container. It is recommended that all coils, including copper tube aluminum fin, pre-coated fin, cop- per fin, or e-coated coils be cleaned with the Totaline environ- mentally balanced coil cleaner as described below. Coil cleaning should

    Avoid the use of:

    Totaline environmentally balanced coil cleaner is non-flamma- ble, hypoallergenic, nonbacterial, and a USDA accepted biode- gradable agent that will not harm the coil or surrounding com- ponents such as electrical wiring, painted metal surfaces, or in- sulation. Use of non-recommended coil cleaners is strongly discouraged since coil and unit durability could be affected.

    Totaline Environmentally Balanced Coil Cleaner Application Equipment

    ! CAUTION

    Harsh chemicals, household bleach or acid or basic cleaners should not be used to clean outdoor or indoor coils of any kind. These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion at the fin/tube interface where dissimilar materials are in contact. If there is dirt below the surface of the coil, use the Totaline environmentally balanced coil cleaner as described above.

    ! CAUTION

    High velocity water from a pressure washer, garden hose, or compressed air should never be used to clean a coil. The force of the water or air jet will bend the fin edges and in- crease airside pressure drop. Reduced unit performance or nuisance unit shutdown may occur.

    Totaline Environmentally Balanced Coil Cleaner Application Instructions

    MICROCHANNEL HEAT EXCHANGER (MCHX) CONDENSER COIL MAINTENANCE AND CLEANING RECOMMENDATIONS

    ! CAUTION

    Do not apply any chemical cleaners to MCHX condenser coils. These cleaners can accelerate corrosion and damage the coil.

    Routine cleaning of coil surfaces is essential to maintain proper operation of the unit. Elimination of contamination and removal of harmful residues will greatly increase the life of the coil and extend the life of the unit.

    The following steps should be taken to clean MCHX condenser coils:

    ! CAUTION

    Excessive water pressure will fracture the braze between air centers and refrigerant tubes.

Source: Carrier (www.shareddocs.com)

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