Install Instructions

MNEZ123 111820
– 17 –
Model EZ 1,2,3 and LF Oil/Bio-fuel Burners — Instruction Manual
7. Maintenance Procedures
Maintenance/service procedures
Turn off power to appliance when servicing burner. Failure
to comply could result in severe personal injury, death or
substantial property damage.
Cleaning blower wheel
1. The blower wheel accumulates dust and debris from normal operation.
You will need to clean the wheel blades periodically to prevent reduction
in airow.
• Inspect the blower wheel by removing the blower wheel access
cover (See Figure 14).
• To remove the cover, open the ignitor plate and loosen the blower
wheel access cover screw about three turns.
• Inspect the blower wheel to see if it needs to be cleaned. Dirt and
lint on the wheel reduce air ow, and must be removed if the burner
is to operate correctly.
2. To clean blades, remove the two bolts securing the motor to blower
housing.
a. Slide the motor out and rotate to remove and access blower wheel.
b. Use a brush and vacuum to clean each blade and the blower hous-
ing interior.
c. Replace motor/wheel in blower housing and secure with the two
bolts.
d. Push wire slack back into junction box.
Replacing blower motor or wheel
1. If either the blower wheel or motor must be replaced, remove the two
bolts securing the motor to housing.
2. Disconnect the motor wires in the burner junction box.
3. Loosen the Allen screw securing the blower to the motor shaft and
remove the wheel.
4. When assembling the replacement assembly, slide the wheel onto the
motor shaft and use feeler gauges to set a space of 3/64 inch between
the blower wheel and the motor face.
5. Replace the motor/wheel assembly in the housing, wire the motor leads
and secure the motor with the two bolts.
Motor maintenance
• The Carlin PSC motor is constructed with permanently-lubricated bear-
ings, and requires no oiling. Should you replace the original motor with
another type of motor, occasional oiling may be required, depending
on motor design and manufacturer’s recommendations.
• Any time you replace a component or disassemble any part of the
burner for service/maintenance, perform a complete operational test
after reassembly to verify the burner operates correctly. Failure to verify
operation could result in severe personal injury, death or substantial
property damage.
Checking ignitor
Never test an ignitor by placing a screwdriver (or other me-
tallic object) across the high voltage clips. Check 40700 &
40900 ignitors only by observing spark at appliance ignition
electrodes, with fuel supply OFF. Using any other method
could cause ignitor damage and severe personal injury.
1. Checking 45000 ignitors only:
• Disconnect electrical power to burner.
• Remove hold down clips or screws. Lift ignitor mounting plate to
the full-open position. Set high voltage clips to a ½” to ¾” gap.
• Carefully energize ignitor and check for spark arcing at the high
voltage terminals. If spark jumps the gap, ignitor is good.
Ceramic ber materials
The appliance may contain ceramic ber and/or berglass
materials. Ceramic ber materials, such as chamber liners, may
contain carcinogenic particles (chrystobalites) after exposure
to heat. Airborne particles from berglass or ceramic ber
components have been listed as potentially carcinogenic by
the State of California. Take the following precautions when
removing, replacing and handling these items.
Avoid breathing dust and avoid contact with skin or eyes. Wear
long-sleeved, loose-tting clothing, gloves and eye protection.
Use a NIOSH N95 certied respirator. This respirator meets
requirements for protection from chrystobalites. Actual job
requirements or NIOSH regulations may require other or
additional protection. For information, refer to the NIOSH
website, http://www.cdc.gov/niosh/homepage.html.
Ceramic ber removal: To prevent airborne dust, thoroughly
wet ceramic ber with water before handling. Place ceramic
ber materials in a plastic bag and seal to dispose.
Avoid blowing, tearing, sawing or spraying berglass or ce-
ramic ber materials. If such operations are necessary, wear
extra protection to prevent breathing dust.
Wash work clothes separately from other laundry. Rinse clothes
washer thoroughly afterwards to prevent contamination of
other clothing.
NIOSH First aid procedures:
Eye exposure — irrigate immediately
Breathing — fresh air.
Figure 14 Removing the blower wheel access cover