21
CF2500/CF3500
Burner Manual
Annual Service
— by quali
fi
ed service
technician
Replace the oil supply line
fi
lter. The line
fi
lter
cartridge must be replaced to avoid contamination
of the fuel unit and nozzle.
Inspect the oil supply system. All
fi
ttings should be
leak-tight. The supply lines should be free of water,
sludge, and other restrictions.
Remove and clean the pump strainer if applicable.
Replace both nozzles with the speci
fi
ed brand,
pattern, gph,
fl
ow rate, and spray angle speci
fi
ed by
the appliance manufacturer.
Clean and inspect the electrodes for damage,
replacing any that are cracked or chipped.
Check electrode tip settings. Replace electrodes if
tips are rounded.
Inspect the igniter spring contacts.
Clean the cad cell lens or other sensor surface, if
necessary.
Inspect all gaskets. Replace any that are damaged
or would fail to seal adequately.
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Perform Regular Maintenance
Inspect the combustion head and air tube. Remove
any carbon or foreign matter. Replace all damaged
units with exact parts.
Clean the blower wheel, air inlet, air guide, burner
housing, and static plate of any lint or foreign
material.
If motor is not permanently lubricated, oil motor with
a few drops of SAE 20 nondetergent oil at each oil
hole. DO NOT over oil motor. Excessive oiling can
cause motor failure.
Check motor current. The amp draw should not
exceed the nameplate rating.
Check all wiring for secure connections or insulation
breaks.
Check the pump pressure and cutoff function.
Check primary control safety lockout timing.
Check ignition system for proper operation.
Inspect the vent system and chimney for soot
accumulation or other restriction.
Clean all
fl
ue passages and
fl
ue pipe. Replace
corroded or damaged pipes.
Clean the appliance thoroughly according to the
manufacturer’s recommendations.
Check the burner performance. Refer to the section
‘Set High-
fi
re Air’
.
It is good practice to make a record of the service
performed and the combustion test results.
Monthly Maintenance
— by owner
Observe combustion air openings and vent system
for integrity. Openings must be clean and free of
obstructions.
Check oil lines and
fi
ttings to verify there are no
leaks.
Observe burner ignition and performance to verify
smooth operation.
Shut the system down if you observe abnormal
or questionable operation. Call a quali
fi
ed service
agency for professional inspection and service.
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Section: Perform Regular Maintenance
Annual Professional
Service Required
Tampering with or making incorrect
adjustments could lead to equipment
malfunction and result in asphyxiation,
explosion or
fi
re.
Do not tamper with the burner or controls or make
any adjustments unless you are a trained and
quali
fi
ed service technician.
To ensure continued reliable operation, a quali
fi
ed
service technician must service this burner annually.
More frequent service intervals may be required in
dusty or adverse environments.
Operation and adjustment of the burner requires
technical training and skillful use of combustion test
instruments and other test equipment.
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