Specifications
MONITOR
HEATING
SYSTEMS
Section
5:
Servicing
5-1
INTRODUCTION
Servicing
is
required when
the
Monitor
Heater
is not
running
at
proper efficiency. This section
covers
possible
causes
and
corrective procedures
for
effi-
ciency loses.
Signs
of
improper heater efficiency
and
performance
would
be:
—
Yellowish lazy flame
—
Smoke from flue pipe exhaust
—
Heavy
soot
and
carbon
build
up in
combustion
chamber
—
Lowered heat
output.
5-2
MEASUREMENT
OF
FUEL
FLOW
RATE
Fuel
flow rates
are
preset
and
sealed.
These rates
should
not and we
recommend they
do not be
readjusted.
5-3
REMOVAL
OF
WATER
DEPOSITS
AND
CONTAMINANTS
FROM
FUEL
CONSTANT
LEVEL
VALVE
AND
FUEL LINES
NOTE: Disconnect
the
Monitor from power supply
(unplug) before
proceeding.
1.
Shut
off
valve
of
separate tank.
Bend
a
piece
of
sheet metal
or
cardboard into
a
U
shape
and
place
it
under
the
fuel constant
level
valve strainer cover
to
drain
bad
fuel into
a 1-2
liter pan. (Figure
4-1)
A.
Remove strainer cover
and
drain.
B.
With strainer cover removed, inspect, clean
and/or replace strainer
if
damaged.
C.
Remove
drain port screw
and
drain.
D.
Replace
strainer,
cover
and
screw.
E.
Open
fusible
link
valve
or
shut-off
valve
to
refill
system
with
fresh crystal clear ker-
osene.
F.
Repeat steps
1
-2
until
all
contaminated
fuel
is
drained off.
2.
Remove
fuel feed pipe from burner
pot and
solenoid pump,
and
drain
fuel
into pan.
3.
Once lines
are
clear,
reconnect fuel feed pipe,
turn operation
switch
ON and
start
a
test run.
NOTE:
Removing
and
retightening
burner fuel
connection
must
be
done when
a
burner
cools down completely.
If it is
done when
a
burner
is
hot,
the
welding
on the
fuel joint
may
break.
Fixing
Torque
for
nut:30~40kg-
cm
(26~35lb.in).
5-4
CLEANING
THE
BURN
CHAMBER
&
BURNER
POT
M-2400
Under
normal running conditions, soot will
not
deposit
in
great
quantities
inside
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
built
up
does occur
the
unit should
be
opened
and
cleaned.
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 components
are
removed, replace. Disconnect power
supply
to
unit.
1.
If
cleaning
is
necessary,
use the
following meth-
od:
A.
Remove
Front Cover.
B.
Remove Louver Assembly.
C.
Remove
Top
cover
and
wire connectors.
D.
Remove heat
shield
that covers combustion
chamber.
E.
Remove service panel. (Optional)
F.
Remove Flame detector rod. (Optional)
G.
Remove fuel piping from
bum
chamber.
H.
Remove
gniter.
I.
Remove screw
at top of
burner
cap
which
at-
tached
it to
cabinet. Remove screw
at
back
of
cabinet from exhaust duct
and
remove
the 1
screw
holding
the
heat exchanger
to
base.
J.
Remove
the 6
screws holding
the bum
chamber
to
base.
K.
Rock chamber back
and
forth
lightly,
raise
and
remove
bum
chamber
and
heat exchanger,
as
one
assembly from
unit.
L. Set
chamber upside down
and
remove
the 4
screws
which secure
the
burner
pot to the
burn
chamber.
Pull
the
burner
pot up and
out.
43