31
maintenance - Cleaning
Feeder Chamber
This chamber may get a buildup of fines from the feeder
mechanism movement. This area should be checked and
cleaned at least once a year.
To remove the feeder cover:
•
Remove the 5/16" wing nut.
•
Slide the cover off of the threaded stud.
•
Inspect and clean the inner chamber if necessary. See
Fig. 65.
•
Reinstall the cover making certain it is centered on the
feeder body and tighten as tightly as you can by hand.
The combustion blower is made to be removed easily for
inspection and cleaning. See Fig. 67.
The combustion blower is mounted on a precision cut
gasketless mounting plate. This plate is held into place
with (3) thumb screws. See Fig. 67.
To remove the combustion blower:
•
Turn the thumb screws counterclockwise approximately
5 turns. Rotate the entire assembly counter clockwise until
the points of the retaining slots are visible.
•
Remove the blower assembly with the fan blade by
pulling it directly away from the blower housing.
•
The cord on the motor is long enough to allow the motor
to be set down on the black plastic fan cover. This allows
for easy access to inspect and clean the area. See Fig.
66.
•
With the blower assembly out, inspection should be done
on the surfaces of the blower assembly and the housing
opening where they meet. These surfaces MUST be
clean and free from dirt, grit, flyash, soot or nicks in the
metal. This gasketless seal relies on an extremely close
tolerance. Therefore, anything other than a clean joint
may cause exhaust gases and/or flyash to escape.
•
The assembly can only be reinstalled in one position:
with the motor winding in the upward location. See Fig. 67.
The mounting plate will not allow for any other position.
•
Always make sure that the assembly is fully seated and
the (3) thumb screws are tightened before operating the
unit.
5/16"
wing nut
ESP
Feeder rear
chamber/
clean out
cover
Pellet
metering
slide plate
Possible pellet
fines buildup
area.
mating
Surface
Close
Tolerance
Close
Tolerance
Close
Tolerance
Close
Tolerance
Fig. 64
Fig.65
Fig. 66
Fig. 67
Summary of Contents for Harman Accentra Insert
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