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WATER COIL MAINTENANCE
CAUTION: See **WARNING** on Page 1 and 15
FILTERS
Filters upstream of the coil should be checked regularly. If the filters are dirty, they should be cleaned or
replaced. It is important that the coils stay clean to maintain desired airflow. See page 18 for more information
on filter maintenance.
COIL MAINTENANCE
1. Coils must be clean to obtain maximum performance. Check once a year under normal operating
conditions and, if dirty, brush or vacuum clean. Soiled fins reduce the capacity of the coil, demand more
energy from the fan, and create an environment for odor and bacteria to grow and spread through the
conditioned zone. High pressure water (700 Psi or less) may be used to clean coils with fin thickness over
0.0095 inches thick. TEST THE SPRAY PRESSURE over a small corner of the coil to determine if the fins
will withstand the spray pressure.
For coils with fragile fins or high fin density, foaming chemical sprays and washes are available. Many coil
cleaners contain harsh chemicals, so they must be used with caution by qualified personnel only. Care
must be taken not to damage the coils, including fins, while cleaning.
CAUTION: Fin edges are sharp.
BIOLOGICAL HAZARD. MAY CAUSE DISEASE. CLEANING SHOULD BE PERFORMED BY QUALIFIED PERSONNEL.
**WARNING**
19
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