elco Firebird FB 4 R LN - Page 48

MAINTENANCE
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EN
Observe the positioning diagram below when replacing the motor and blower wheel (3). The inside
ange (A) of the blower wheel must be tted at a lower position (quote C) than the equipment
plate (B),tighten the set screw on the blower wheel.
A
B
3
OK
NO
NO
C
Burner Position C
FB 4 R 20 LN 0,7 mm
FB 4 R 26 LN 0,7 mm
FB 4 R 35 LN 0,7 mm
Fig. 49