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A180051
Fig. 6
−
FMU4Z and FMC4Z Models
−
Blower and Coil Parts
CARE AND MAINTENANCE
The minimum maintenance requirements for this equipment are as
follows:
1.
Inspect and clean or replace air filter each month or as re-
quired.
2.
Inspect cooling coil, drain pan, and condensate drain each
cooling season for cleanliness. Clean as necessary.
3.
Inspect blower motor and wheel for cleanliness each heating
and cooling season. Clean as necessary.
4.
Inspect electrical connections for tightness and controls for
proper operation each heating and cooling season. Service
as necessary.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when handling
parts.
CAUTION
!
A. Air Filter
The air filter should be replaced as needed.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
Never operate unit without a filter.
CAUTION
!
B. Cooling Coil, Drain Pan, and Condensate Drain
The cooling coil is easily cleaned when it is dry. Inspect coil and
clean (if necessary) before each cooling season. To check or clean
cooling coil, remove blower/heater access panel to gain full access
to cooling coil. If coil is coated with dirt or lint, vacuum with a soft
brush attachment.
Be careful not to bend coil fins. If coil is coated with oil or grease,
clean it with a mild detergent and water solution. Rinse coil with
clear water.
Be careful not to splash water onto insulation.
Inspect drain pan and condensate drain at same time cooling coil is
checked. Clean drain pan and condensate drain by removing any
foreign matter from pan. Flush pan and drain tube with clear water.
If drain tube is restricted, it can generally be cleared by
high
−
pressure water. Cut plastic line and work outside condensate
pan and away from coil to clear drain tube.
NOTE
:
There MUST be a trap in condensate line. Trap must be at
least 3
−
in. deep, not higher than the bottom of unit condensate
drain opening, and pitched downward to an open drain or sump.
