- 12-
2. Pull the filter straight up and remove.
3. Clean filter with vacuum or with running water.
Reverse this procedure to reinstall the filter
.
Filter is removed by grasping
the filter
'
s top and gently
pulling up
Front removal is not
necessary to
remove the filter
Vent Screen
Before cleaning the vent screen, disconnect power to the
unit by unplugging the power cord at the wall outlet or
subbase, or disconnect power at the fuse box or circuit
breaker. If unit is operated with vent door closed, the vent
screen does not need
to be cleaned.
1. Remove the cabinet front as described in Front
Removal.
2. Remove the six screws securing the chassis to the wall
sleeve.
3. Slide the chassis out of the wall sleeve far enough so
that the vent screen is accessible.
4. Clean the vent screen
,
slide the chassis back into the
wall sleeve, secure it in place with six screws and reinstall
the front cabinet.
Cabinet Front
The cabinet front and discharge air grille can be cleaned
with a water dampened cloth. Under no circumstances
should hydrocarbon-based cleaners (e.g. acetone,
benzene, naphtha gasoline, etc.) or ammonia based
cleaners be used to clean the front or air grilles. Use care
when cleaning the control area.
Y E A R L Y M A I N T E N A N C E A N D
CLEANING
NOTE:
Use a mild biodegradable detergent when
cleaning the unit. Special care must be taken to protect the
unit's control board and other electrical components from
getting any water on them while cleaning. The use of harsh
or caustic cleaning agents or materials such as bleach or
coil cleaners that are not designed for PTAC products will
cause damage or deterioration of the aluminum fin or coil
material and is not recommended. Care must be taken not
to bend the aluminum fin stock.
Routine scheduled Maintenance
To achieve continuing top performance and high efficiency,
establish a
“once a year" cleaning/inspection schedule for
the unit. Take the unit out of the sleeve and thoroughly
clean and rinse. Be sure to include in the yearly cleaning
the evaporator coil, and condenser coil, basepan, and
drain passages.
Scheduled maintenance can be accomplished by either
qualified local maintenance staff or by an authorized
servicer. They must follow the instructions described in this
manual.
Adverse Operating Conditions Maintenance
Units operating in dusty or corrosive locations; i.e.
dusty construction site or sea coast, must be cleaned
more often. A minimum of four (4) times a year will
maintain proper operational conditions and protect unit
components.
Wall sleeve
Clean the wall sleeve while cleaning the unit. The
caulking around the sleeve should be checked to make
sure that any potential air and water openings around
the sleeve are properly sealed. The wall sleeve's level
should also be rechecked. Proper leveling for most
installations are a 1
/
4 bubble tilt to the outside and
level from right to left. Contact your sales person for
detailed maintenance or cleaning instructions.
CAUTION!
DO NOT USE COMMERCIAL GRADE COIL CLEANERS. SOME
OF THESE CLEANERS MAY CONTAIN ETHYLENE DIAMINE
TETRACETIC ACID (EDTA) WHICH CAN SHORTEN THE LIFE
OF THE CONDENSER COIL
.
Base pan and Condenser coil
Before cleaning the base pan and condenser coil, turn
OFF unit mode switch and disconnect power to the unit.
To disconnect power, either unplug the power cord at the
wall outlet or subbase, or disconnect power at the fuse box
or circuit breaker
1. Create a water tight seal by tightly covering the entire
control panel area and fan motor with plastic. Creating this
seal prevents water from entering the control area or the
fan motor and damaging the unit.
2. Spray condenser coil and base pan down with water.
Next spray a mild biodegradable detergent onto the
condenser coil and base pan. Let set for five (5) minutes.
3. Rinse condenser coil and base pan with water again
.
NOTE:
Ensure water pressure is no higher than that of an
ordinary garden hose and the water temperature no higher
than 120
℉
.
