Beckett SM - Manual (Page 18)

18
CENTER WHEEL FOR EQUAL
DISTANCE FROM HOUSING SIDES
Section: Perform Regular Maintenance
ALWAYS KEEP THE FUEL
OIL SUPPLY VALVE SHUT
OFF IF THE BURNER(S) IS SHUT DOWN
FOR AN EXTENDED PERIOD OF TIME.
Perform Regular Maintenance
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 combustion with test instruments”.
It is good practice to make a record of the service
performed and the combustion test results.
Shutting the Burner Off
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Turn off all electric power to the burner.
Note: There could be more than one disconnect switch.
Replacing the blower wheel:
When replacing the blower wheel, insure that the wheel
is centered between the two sides of the burner housing
as shown below.
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 UNIT OR
CONTROLS - CALL YOUR QUALIFIED SERVICE
TECHNICIAN OR SERVICE PERSONNEL.
To ensure continued reliable operation, a qualifi 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. y
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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 the nozzle with the exact brand, pattern,
gph fl ow rate and spray angle..
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 surface, if necessary.
Inspect all gaskets. Replace any that are damaged
or would fail to seal adequately.
Inspect the combustion head and air tube. Remove
any carbon or foreign matter. Replace all damaged
units with exact parts.
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Step 4: Recheck smoke level. It should be Zero.
-This procedure provides a margin of
reserve air to accommodate variable
conditions.
-If the draft level has changed, recheck
the smoke and CO
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levels and readjust
the burner, if necessary
Once combustion is set, tighten all fasteners on air
band, air shutter and escutcheon plate.
Start and stop the burner several times to ensure
satisfactory operation. Test the primary control
and all other appliance safety controls to verify
that they function according to the manufacturer’s
specifi cations. 4.
5.
Figure 10. Blower Wheel Assembly