Maintenance - DeWalt DXH70KTFRHC Instruction Manual

place. The middle hole is only for the locating pin that receives no fastener. Simply
remove the screws that line up with the holes on the heat shield when on the
centering pin. Put the heat shield into place and re-attach the screws.
PREPARATION FOR OPERATION
1. Check the heater for possible shipping damage. If any is found, immediately
contact the manufacturer at 855-805-5745.
2. Follow all of the "Operation Precautions" and "Safety Precautions".
3. Fill the fuel tank with clean kerosene. In extremely cold weather, condensation may
develop in the tank and it is recommended that a tablespoon of de-icer be added
for each gallon (4 liters) of fuel in the tank. When filling the heater, use at least 2
gallons (8 liters) of fuel. Be sure heater is level and do not overfill. Use a funnel or
can with a long fill spout.
IMPORTANT: Before filling fuel tank the first time or after extended storage
periods, drain the fuel tank of any moisture or condensation.
4. Locate heater at a safe distance from combustible materials. Not suitable for use
on wood floors or other combustible materials. When used, the heater should
rest on suitable insulating material at least 1 inch thick and extending 3 ft. or more
beyond the heater in all directions.
HEATER START UP
1. Locate the power plug near the controls of the heater. Using a properly sized
and grounded extension cord plug in the unit.
2. When power reaches the heater the Red light on the back of the heater will
illuminate.
3. Turn the power switch to the ON position. The LED read out will show the
approximate room temperature. When you turn the thermostat knob clockwise
the LED readout will change to show the set temperature. When that number
is higher than the room temperature the heater will begin is sequence of
operation.
4. Once the heater begins to run it will cycle on and off based on the thermostat
setting. If for any reason your heater does not run properly refer to the
Diagnostic and trouble shooting section in this manual or contact the
manufacturer with one of the methods listed on the back page of this manual.
HEATER SHUT DOWN
To turn off either turn the thermostat knob to a temperature lower than the room
temperature or move the power switch to the off position.
NOTICE: The heater is engineered with an integrated 3 minute cooling cycle
designed to prolong the life of internal components and to reduce surface
temperatures that tend to increase shortly after shutdown. Please allow this cycle to
complete before removing power from the heater.
Maintenance and Storage
Daily Maintenance 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 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 filter in place.
Contact DeWALT for replacement parts
500 Hour Maintenance schedule
1. REMOVE DUST. Clean heater twice a season (more often under dusty conditions).
Remove accumulated dust from the 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.
2. CAD CELL. Clean the glass portion of the cad cell with a soft dry cloth.
3. NOZZLE. Accumulation of dirt and carbon from the combustion process can
eventually fill up the passages in the nozzle, resulting in reduction of fuel and air
flow. If this occurs, replace the fuel nozzle. Contact DeWALT for service parts
4. FUEL TANK. Clean twice a season (during frequently used periods, clean twice a
month). Drain and flush the fuel tank with clean fuel oil.
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