elco Firebird FB 2 K LN, Instructions Manual, Page: 54 / 64

MAINTENANCE
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EN
6 .4 .7 Cleaning the internal rotor
Check there is no dust inside the fan wheel because this could reduce the combustion
performances. Carry out maintenance operations, avoiding to damage the fan. Verify the correct
position of fan wheel within the burner housing.
Follow the sequence
–
loose the screws (1) and remove the air intake duct (2)
–
clean the fan (3) and the inside of the air intake using a brush
–
if necessary, disassembly and re-assembly the fan.
2
1
3
Fig. 54
Observe the positioning diagram below when replacing the motor and blower wheel (3). The
inside flange (A) of the blower wheel must be fitted at 0,3 mm lower than the equipment plate (B),
tighten the set screw on the blower wheel.
A
B 3
OK
NO
NO
C
Burner Position C
FB 2 K 18 LN 0,5 mm
FB 2 K 20 LN 0,5 mm
FB 2 K 26 LN 0,5 mm
FB 2 K 35 LN 0,5 mm
Fig. 55