Important; Maintenance - Mr. Heater MH18B Instructions D'utilisation Et Manuel Du Propriétaire

NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING! NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
13. Installation of 4 D-cell batteries is
required for fan operation. Battery
box is located on lower back panel of
heater. Follow instructions on battery
cover for correct battery installation.
See Figure 6.
14. Heater fan can also be powered by
electrical adapter F276127. Required
adapter to be 6 volt DC up to 800
milliamp current with positive tip
polarity. See Figure 6.
Shutdown Instructions
1. To shut off heater, shut off propane
at supply tank, allow heater to use-up
propane in supply line until heater
shuts off, then slightly push down and
turn Control Knob clockwise to "OFF"
position.
• When not in use, the gas must
be turned off at the LP-gas supply
cylinder. As stated before allow heater
to use up propane in supply line until
heater shuts off. When the LP-gas
supply cylinder is not disconnected
from the heater, the heater and the
cylinder must be stored outdoors, in a
well ventilated space, out of reach of
children, and must not be stored in a
building, garage or any other enclosed
area.
• Indoor storage of the heater is
permissible only if the cylinder is
disconnected and removed from
the heater. Cylinders must be stored
outdoors out of the reach of children
and must not be stored in a building,
garage or any other enclosed area.

Maintenance

• Always keep the heater area clear
and free from combustible materials,
gasoline and other flammable vapors
and liquids.
• Keep the vent areas (slots in the
bottom and top of the heater) clear at
all times.
• Visually inspect the pilot flame and
burner periodically during use. The
pilot flame should be blue in color
(not yellow) and will extend to the
thermocouple. The flame will surround
the thermocouple just below the tip.
See Figure 7.
Mr. Heater | Portable Big Buddy Radiant Heater
• A slight yellow flame may occur where
the pilot flame and main burner
flame meet. The burner should be
bright orange (with a slight blue color
around the border, a red-orange haze
that is visible on the ceramic tile is
acceptable) and without a noticeable
flame.
• A blue flame that rolls out at the
top of the ceramic tile indicates an
accumulation of dust, lint or spider
webs inside the housing assembly and
main burner assembly. If the pilot is
yellow or the burner has a noticeable
flame, cleaning may be required.
• It is necessary to periodically check the
burner orifice and burner venturi to
make sure that they are clear of things
such as insect nests and spider webs
that may accumulate over time. A
clogged tube can lead to a fire.
• Use the following procedure to inspect
the casing assembly and main burner
assembly.
Cleaning Instructions (Refer to
Exploded Parts on Page 8):
IMPOR TANT: Allow heater to
thoroughly cool before performing any
maintenance.
1. Remove disposable 1 lb. cylinder
from heater or turn OFF gas supply at
remote cylinder valve, and disconnect
hose from heater.
2. Remove wire guard from front of
heater by gently bending to remove
from holes in front cover.
3. Remove (4) four screws that secure the
rear cover (ref. # 3) to the heater.
4. Pivot cover outward from bottom.
Release from 2 top clips. Set aside.
5. Remove (3) screws attaching lower
baffle to expose burner air openings.
6. Inspect interior of casing assembly for
accumulation of dust, lint or spider
webs. If necessary, clean interior
casing assembly with a vacuum
cleaner or apply air pressure (max. 30
psi). Do not damage any components
within casing assembly when you are
cleaning.
7. Inspect and clean main burner orifice
located at bottom of burner venturi
tube, by using a vacuum or apply air
pressure at orifice opening.
6
Operating Instructions and Owner's Manual
Figure 7
WARNING: Never use needles,
wires or similar cylindrical objects to
clean the pilot to avoid damaging the
calibrated ruby that controls the gas
flow through the pilot orifice.
8. Inspect and clean pilot (mounted to
bracket) by using a vacuum or apply air
pressure through the holes in the pilot
indicated by the arrows in Figure 7.
9. Apply air pressure (max. 30 psi) into
ceramic tile of burner assembly and
the venturi tube (with 2 air openings)
to remove dust, lint or spider webs.
10. Reinstall lower baffle with (3) screws.
1 1. Slide back cover over (2) plastic hooks
on top of heater. Make sure rear cover
aligns with plastic side covers and
reinstall (4) screws to hold in place.
12. Replace wire guard.