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MONITOR HEATING SYSTEM
Section 4: Maintenance/Servicing
4-1 CLEANING THE CABINET
When the cabinet is soiled, wipe it with a damp
cloth. Restore the shine with a dry cloth. The use
of abrasive household cleaners may dull the finish.
4-2 CHECKING THE FLUE PIPE
At the beginning of each heating season, check
the inside of the flue pipe. Foreign matter, spider
webs, etc. must be removed.
Be sure all fittings and joints are tight.
NOTE: Make sure that all exhaust pipe and intake
pipe connections are firmly mated.
Make sure that the connections between
the flue pipe and exhaust/air intake pipe
and hose are secured by the pipe holder
(P/N 4006) and the hose band (P/N 4008).
4-3 CLEANING THE INTERIOR
Remove the front cover and louver, and vacuum
and wipe away dust and other accumulation.
4-4 CLEANING THE BLOWER GUARD
Heating efficiency will be reduced if the blower
guard at rear of the cabinet is blocked with dirt
or dust.
Blockage also produces a rise in heat that could
cause the heater to shut off.
Wipe the guard clean at least once a week.
4-5 ELECTRIC MOTOR MAINTENANCE
Motors are permanently lubricated and need no
lubrication. Keep fan and motor free of dust and
dirt by cleaning annually.
4-6 CHECKING THE BURNER FLAME
The burner of this appliance does not need
cleaning, but check the burner flame once a year.
Flame pattern should be as shown in the following
figures. The burner must flame evenly over the
entire surface when operating correctly. The flame
must bum with a clear blue stable flame.
Blue Flame
Yellow Flame
4-7 CLEANING THE BURNER
Under normal running conditions, soot will not
deposit in great quantities at the burner, and a
light covering of soot will not affect the
performance of the unit thus it need not be
cleaned. However, if heavy soot build up does
occur the unit should be opened and cleaned.
If heavy soot builds up in a short period of time
also check the air flows are normal, refer to
page 8,10.
The burner is assembled using gaskets to
maintain its air tightness. If these gaskets leak,
the extra air can cause a serious soot problem
and or exhaust gases to escape into the area
being heated.
NOTE: If any gaskets are torn when compo-
nents are removed, replace.
Cleaning the burner requires disassemble of the
combustion chamber with the heat exchanger.
If cleaning is necessary, use the following
method:
A. Remove the screws from each side of the
cabinet securing the front cover. Carefully re-
move the front cover.
B. Remove the 7 screws, (three on each side and
one in the center) securing the louver assem-
bly to the heater. Remove the louver assem-
bly.
C. Remove the top cover and wire connectors.
D. Remove heat shield that covers combustion
chamber and its lead connectors.
Remove the air hose line from pressure detec-
tive pipe.
E. Remove screw at top of burner cap which at-
tached it to cabinet.
Remove screw at back of cabinet and joint
pipe from exhaust duct and remove the 6
screws holding combustion chamber to burner
chamber.
Remove the screw holding heat exchanger to
base.
Leave burner chamber assy attached to base.
F. Remove combustion chamber and heat ex-
changer, as one assembly from unit.
UNSATISFACTORY
40
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