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ADJUSTMENT PROCEDURE
1. Fill fuel tank.
2. Start heater.
3. Locate the pressure adjustment screw, located on the back of the power pack assembly
and accessible by the handle of the heater.
4. Remove the rubber cap over the fuel pressure adjustment screw.
5. Using a flat bladed screw driver, turn the pump pressure adjustment screw:
• clockwise
to increase pump pressure
• counter-clockwise
to decrease pump pressure
By using the installed pressure gauge (if equipped) you may quantitatively calibrate the
pressure. The manufacturer's recommended pump pressures are in the specifications
chart on page 3.
6. The desired qualitative burner characteristics are that the nose cone in the combustion
chamber should be cherry red with no dark spots and the flame should not extend
beyond the nose cone.
IMPROPER PRESSURE ADJUSTMENT
Problem:
Heater does not have a strong consistent flame.
Heater smokes and spits raw fuel.
Nose cone does not get cherry red.
Adjustment:
Pump pressure is too low.
Turn adjustment screw clockwise to increase pump pressure
Flame extends beyond the end of the heater.
Problem:
Adjustment:
Pump pressure is too high.
Turn adjustment screw counter clockwise to decrease pump pressure.
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 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 Maintenance 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. Safety glasses should be worn when using compressed air.
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. Make sure to dispose of
waste fuel properly.
Annual Maintenance 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.
3. AIR AND FUEL LINES. If the air or fuel lines are removed during cleaning, be sure
all connections are tight before operating unit.
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