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Page 14 RWB 6104 BAFG R02
Perform regular maintenance
Check all wiring for secure connections or insula-
tion 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 ac-
cumulation or other restriction.
Clean the appliance thoroughly according to the
manufacturer’s recommendations.
Check the burner performance. Refer to the sec-
tion “Set combustion with test instruments”.
It is good practice to make a record of the service
performed and the combustion test results.
Figure 8. Blower wheel assembly
SK9190
Use a Feeler Gauge to set
the gap to;
AF = 0.125 +1/64 inch
AFG = 0.030 +1/64 inch
Replace the oil supply line fi lter. The line fi lter car-
tridge 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 applica-
ble.
Replace the nozzle with an equivalent nozzle.
Clean and inspect the electrodes for damage, re-
placing 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 grid surface, if necessary.
Make sure Low Firing Rate Baffl e is in place if
required for the burner application. Omitting the
baffl e can result in unacceptable burner combus-
tion.
Inspect all gaskets. Replace any that are dam-
aged or would fail to seal adequately.
Inspect the compustion head and air tube. Re-
move 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 ma-
terial.
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 by more than 10%.
Do not tamper with the burner or controls or make
any adjustments unless you are a trained and
qualifi 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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Tampering with or making incorrect
adjustments could lead to equip-
ment malfunction and result in
asphyxiation, explosion or fi re.
WARNING
!
Annual Professional Ser-
vice Required
Replace the blower wheel:
Turn off all power to the burner before servic-
ing.
Disconnect the burner motor wires.
Remove the bolts securing the motor to the
burner housing.
Remove the motor and blower wheel.
Remove the existing blower wheel.
Referring to the fi gure below, slide the new
blower wheel onto the shaft.
Use a feeler gauge to set the wheel-to-motor
gap, as shown below. (AF = 0.125 +1/64 inch,
AFG = 0.030 +1/64 inch)
Slide blower wheel toward motor until it con-
tacts feeler gauge.
Rotate the blower wheel until the setscrew is
centered on the fl at of the motor shaft. Tighten
the setscrew to secure the wheel.
DO NOT use a motor that has endshield open-
ings outside the blower wheel circumference
(represented by the dashed line).
Install the motor on the burner housing. Tighten
screws. Reconnect wires.
Restore power, start the burner and perform
combustion tests. Refer to the section “Set
combustion with test instruments”.
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