Enerco MH175KT - Manual (Page 5)

5 Operating Instructions and Owner’s Manual Mr. Heater |Kerosene Forced Air Heater
3. AIR AND FUEL LINES. If the air or fuel lines are removed
during cleaning, be sure all connections are tight before
operating unit.
4. AIR PRESSURE SETTING. The air pressure has been properly
set at the factory. If the air pressure is out of adjustment, it
will most likely be caused by dirty air filters, a partially
plugged nozzle, an air leak in the system or improperly set
pressure. If adjustment becomes necessary, first determine
the proper pressure setting for your heater which is printed
on the serial label located on the fuel tank. Remove the plug
from the air filter cover and attach an accurate pressure
gauge calibrated to a maximum reading of 15 PSI. Start the
heater and note the pressure reading. If the pressure is low,
slowly turn the pressure adjusting screw in (Clockwise) until
the correct pressure is obtained. If the air pressure is high,
turn the adjusting screw out (counterclockwise) until the
pressure is correct. When correct pressure is reached, unplug
the heater, remove the gauge and replace the plug.
STORAGE
Store the heater in a dry location free from fumes or dust.
At the end of each heating season, clean the heater as described
in the MAINTENANCE section. Drain and flush the fuel tank with
clean fuel. The manufacturer recommends completely filling the
tank with fuel for extended storage to minimize condensation
inside the tank.
SERVICING
A hazardous condition may result if a heater is used that has been
modified or is not functioning properly. When the heater is
working properly:
* The flame is contained within the heater.
* The flame is essentially yellow.
* There is no strong disagreeable odor, eye burning or other
physical discomfort.
* There is no smoke or soot internal or external to the heater.
* There are no unplanned or unexplained shut downs of the
heater.
The parts lists and wiring diagram show the heater as it was
constructed. Do not use a heater which is different from that
shown. Heater performance is effected by air pressure setting. If
there is any uncertainty about the air pressure setting, have it
checked.
A heater which is not working right must be repaired, but only by
a trained, experienced service person.
In-warranty products will be repaired with no charge for either
parts or labor. Please include a brief statement indicating date,
place of purchase, the nature of the problem and proof of
purchase.
Out-of-warranty products will be repaired with a charge for parts
and labor.
MAINTENANCE AND STORAGE
WARNING. To prevent personal injury, unplug the heater
from the wall outlet before servicing.
For maximum efficiency and trouble-free service, make the
following periodic maintenance, cleaning and inspections.
DAILY SCHEDULE
1. GENERAL. Make general visual inspection of heater for loose
or damaged parts. Check nuts and bolts to insure against
looseness caused by vibration or rough handling. Damaged
parts should be repaired or replaced before using heater
again. Check heater operation to be sure it is operating
normally (See "Servicing" section for description of normal
operation).
2. FILTERS. Dirty air or fuel filters will cause an imbalance in the
air-fuel mixture. The best indication that this condition exists
is an increase in odors or difficulty getting your heater to
ignite. This heater should never be operated without the
filters in place. If required, clean filters as described under
"500 Hours" and "Annual Schedules".
500 HOUR SCHEDULE
1. AIR INTAKE FILTER. Remove and wash the filter element with
a mild detergent, dry thoroughly and replace. Do not oil the
filter element. If your heater is used where there is
considerable dust or dirt, clean as often as necessary
(approximately every 50 hrs.).
2. REMOVE DUST. Clean heater twice a season (more often
under dusty conditions). Remove accumulated dust from the
transformer, burner, motor and fan blades with compressed
air. Wipe area clean with a clean dry cloth. Inspect area to
insure all foreign materials are removed, especially around
the burner and combustion area.
3. CAD CELL. Clean the glass portion of the cad cell with a soft
dry cloth.
4. NOZZLE. Accumulation of dirt from fuel and carbon from the
compressor vanes will eventually fill up the passages in the
nozzle, resulting in reduction of fuel and air flow. Pressure
will gradually increase giving improper fuel-air mixture and
excess odor and smoke. If this occurs, replace the fuel nozzle.
5. FUEL TANK. Clean twice a season (during frequently used
periods, clean twice a month). Drain and flush the fuel tank
with clean fuel oil.
ANNUAL SCHEDULE
1. AIR OUTPUT FILTER. Remove the air output filter and tap the
contaminated side gently on a solid object to remove
contaminates. Compressed air or liquids should not be used
to clean this filter. Reinstall cleaned filter in filter body in the
same position as it was when removed. If the filter appears
extremely dirty, replace it with a new filter of the same type.
When replacing the filter cover, be sure the gasket is firmly in
place and the screws in the filter cover are tight to prevent air
leaks.
2. FUEL FILTER. Remove the fuel filter from fuel line and direct
compressed air through the filter in the opposite direction of
fuel flow. Safety glasses should be worn when using
compressed air.