Airxcel Aqua-Hot 200 Series, Руководство по обслуживанию

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Fluid Circulation Pump
©Aqua-Hot®
250-D03 Diesel Series Service Manual REV 220302
p. 68
Burner Components
Bearings
The bearings support the combustion air blower’s shaft and
allows the blower to turn smoothly.
Bearings Test:
1. In order to perform the following procedure, it is necessary
to detach and reattach the diesel burner head. Be sure to
review the detaching and reattaching section for detaching
and reattaching instructions starting on Page 47.
2. Locate and disconnect the C-plug harness wires that
connect to the flame sensor and fuel solenoid. Disconnect
the ignition cables from th ignition electrodes.
3. Remove the four nozzle stand plate screws that secure the
nozzle stand plate in place. Remove the nozzle stand plate
by pulling on the nozzle stand until the plate releases from
the cast-aluminum blower casing.
4. Remove the four ignition coil screws that secure the
ignition coil to the protection cap. Lift the ignition coil and
disconnect the black (+) and brown (-) wires from the C-plug
harness wires, prior to removing. Remove the protection
cap from the diesel burner, so that the motor and clutch
halves are exposed.
5. Remove the three hex-head screws that secure the motor
and motor flange to the blower housing. Remove the
motor and flange assembly along with the clutch halves.
Disconnect the motor’s black (+) and brown (-) wires from
the C-plug harness’ wires.
6. Remove the four blower housing screws that secure the
blower housing to the blower casing. Remove the blower
housing so that the combustion air blower is exposed.
7. Spin the combustion air blower by hand. Placing one of
the clutch halves to the end of the shaft, assists with the
spinning of the bearings.
8. If the combustion air blower rotates smoothly, without
any friction or noise, the bearings are in proper working
condition. If the combustion air blower does not rotate
smoothly and/or produces noise, the bearings are worn
and must be replaced.
Bearings Replacement:
1. In order to perform the following procedure, it is necessary
to detach and reattach the diesel burner head. Be sure to
review the detaching and reattaching section on Page 47.
2. Locate and disconnect the C-plug harness wires that
connect to the flame sensor and fuel solenoid. Disconnect
the ignition cables from the ignition electrodes.
3. Remove the four nozzle stand plate screws that secure the
nozzle stand plate in place. Remove the nozzle stand plate
by pulling on the nozzle stand until the plate releases from
the cast-aluminum blower casing,
Blower Casing
Motor Flange
Blower Housing
Protection Housing
Figure 110