Specifications
MONITOR HEATING SYSTEMS
Section
4:
Maintenance
Activity
Material
Remarks
Inspect
Combustion Ring. Flame
Sensor
Rod, Baffle,
and
Burner
Cloth.(Suggested
frequency
every
3
years).
Clean
all
carbon deposits. Replace
if
excessively worn,
warped,
or
cracked.
NOTE:
If any
gaskets
are
torn
when Components
are
removed,
the
gasket must
be
replaced.
Clean Combustion Chamber
(every
3
years)
Vacuum
all
carbon deposits
from
interior
of
chamber.
Inspect
air
holes
in
Burner
Pot
Clean Igniter
Check
air
piping
that interconnect
Combustion Blower
and Air
Pres-
sure
Switch.
Check
for
carbon build
up in
fuel
inlet going into burn chamber (every
3
years)
Check
for
carbon residue
at
burner
end of
fuel line
(every
5
years)
Use
a
small, stiff brush
or a
short
length
of
soft copper wire
to
clean
any
blocked
holes.
A
glass beater works well
if
avail-
able.
Scrape
any
carbon deposits
from
igniter.
Replace
air
piping that
is
worn,
broken
or
brittle.
Disconnect copper fuel
piping
from
burn chamber
and
clear fuel inlet
line
by
reaming with
a
solid piece
of
wire(such
as
copper.bailing
wire.or
coat
hanger) which should
be
able
to go in
approximately
3"
without
obstruction.
The
fuel
line
can be
checked
and
cleaned
with
a
thinner piece
of
wire.
NOTE:
Removing
and
retightening
burner fuel
connection
must
be
done when
the
burner cools down com-
pletely.
If it is
done when
the
burner
is
hot,
the
weld-
ing on the
fuel joint
may
break. Fixing
torgue
for
nut;30~40kg-cm(26
~35lb-in)
4-3
INSPECT
EXHAUST/AIR
PIPING
Verify
that
all
exhaust
and air
pipes
are
free
of
leaks
and
loose connections,
as
specified
below:
STEP1:
Remove
Protective
Cloth
Remove
cloth
insulation
cover(s) from
all
exhaust
pipes.
STEP2:
Inspection
of
Exhaust/Air
Piping
A.
Visually
inspect
both
air and
exhaust
piping
for
obvious cracks, leaks,
or
loose
connections.
Black carbon deposits
may be
evidence
of
these leaks,
and
o-rings
may
need
to be
replaced.
B.
Be
sure
that
all
pipes
are
installed
tightly
and
securely, especially
at
joints.
C.
Turn heater
ON.
D.
Carefully apply
a
small amount
of
soapy water
(with
a
paint
brush)
to the
surface areas
of the
air/exhaust
piping.
Any
leaks that
may
exist will
be
readily
identified
by the
appearance
of
bubbles.
STEP3:
Return
to
Operating Condition
A.
Turn heater OFF.
B. Dry all
pipes with paper towels.
C.
Repair
any
leaks that have been found
(if
necessary, replace
the
tubing).
D.
Replace
cloth
insulation
covers.
40