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Service (Continued):

FAN BLADES: The fan blades should be cleaned at least once per heating season, depending on conditions. Remove all accumulated dust and dirt with a burst of

condensed air (see Figure 13).

PRESSURE ADJUSTMENTS:

Proper pressure is dependent on the fuel type the unit will be running. When smoking or non-ignition occurs, remove the lower panel. Locate the Phillips screw with a

nut on the fuel pump to the left of the fuel line. There is a small “P” next to the pressure screw. The ideal pressure is 107 psi (7.5 kg/cm 2 ).

If you are experiencing smoking or fuel dripping from the unit, turn the screw clockwise 1/8 to 1/4 of a turn to increase the fuel pressure until the unit is operating

properly.

If you are experiencing extended flames from the front of the unit, turn the screw 1/8 to 1/4 of a turn counterclockwise to reduce the air pressure until the unit is

operating properly.

NOZZLES:

Nozzles should be cleaned or replaced at least once per heating season. Contaminated fuel could make this necessary immediately. To clean dirt from the nozzle, blow

compressed air through the nozzle front. It may be necessary to soak nozzle in clean Kerosene or diesel to help loosen any particles (see Figure 14a and 14b).

80-OFR Nozzle

125-OFR-A Nozzle

PHOTOCELL:

The photocell should be cleaned at least once per heating season or more depending on conditions. Use a cotton swab and water or alcohol to clean the lens of the

photocell.

Be certain to reinstall the photocell in the proper position as shown below (see Figure 15).

FILTERS:

The fuel filter and oil filter should be cleaned at least twice per heating season by rinsing it in clean Kerosene or diesel. Contaminated or old fuel could make cleaning

necessary immediately.

WIRING DIAGRAMS

80-OFR