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536636-UIM-D-1211
Johnson Controls Unitary Products 17
SECTION X: MAINTENANCE
Filters must be cleaned or replaced when they become dirty. Inspect at
least once per month. The frequency of cleaning depends upon the
hours of operation and the local atmospheric conditions. Clean filters
keep unit efficiency high.
COIL CLEANING
If the coil needs to be cleaned or replaced, it should be washed with
Calgon CalClean (mix one part CalClean to seven parts water). Allow
solution to remain on coil for 30 minutes before rinsing with clean water.
Solution should not be permitted to come in contact with painted sur-
faces.
LUBRICATION
The bearings of the blower motor are permanently lubricated.
CONDENSATE DRAINS
During the cooling season check the condensate drain lines to be sure
that condensate is flowing from the primary drain but not from the sec-
ondary drain. If condensate ever flows from the secondary drain the unit
should be promptly shut off and the condensate pan and drains cleaned
to insure a free flowing primary drain.