Trane Flex II Series Installation Operation & Maintenance page 37

• Regular coil maintenance, including annual cleaning enhances the unit operating efficiency by minimizing compressor
head pressure and amperage draw. The condenser coil should be cleaned at least once each quarter or more if the unit
is located in a "dirty" or corrosive environment. Cleaning with cleansers or detergents is strongly discouraged due to
the all-aluminum construction; straight water should prove sufficient, if not please contact Trane. Any breach in the
tubes can result in refrigerant leaks
IMPORTANT: Only in extreme cases should any type of chemical cleaner or detergent be used on microchannel coils. If
it becomes absolutely necessary because water alone did not clean the coil, specify a cleaner that is:
• A is pH neutral cleaner.
• An alkaline cleaner that is no higher than 8 on the pH scale.
• An acidic cleaner that is no lower than 6 on the pH scale.
• Does not contain any hydrofluoric acids.
Be sure to follow the instructions provided with any cleaner chosen. Keep in mind that it is still MANDATORY that the
coils are thoroughly rinsed with water after the application of the cleaner even if the instructions specify a "No Rinse"
cleaner. Cleaners or detergents that are left on the coil due to improper rinsing will significantly increase the possibility
of corrosion damage on the microchannel coil.
Note: Quarterly cleaning is essential to extend the life of an E-coated coil and is required to maintain warranty
coverage. Failure to clean an E-coated coil will void the warranty and may result in reduced efficiency and
durability in the environment.
WARNING! Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures
to ensure the power cannot be inadvertently energized. Failure to disconnect power before servicing could result in
death or serious injury.
1. Disconnect Power to the unit.
2. Wear proper personal protection equipment such as a face shield, gloves and waterproof clothing.
3. Remove enough panels from the unit to gain safe access to the microchannel coil.
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