Page 27
BOLT
PULLEY ALIGNMENT - WITH TENSIONER
NUT
ALIGN
TENSIONER
MARKS
ADJUSTABLE
PULLEY
FIXED
PULLEY
TENSIONER
TENSIONER BOLT AND
ADJUSTMENT NUT
FIGURE 12
Blowers Equipped With Belt Tensioner
1 - Loosen the bolt in the center of the tensioner. See
2 - Place belt over all three pulleys.
3 -
4 - Hold the tensioner with marks aligned and tighten
E-Check Belt Tension
Overtensioning belts shortens belt and bearing life. Check
belt tension as follows:
1 -
2 - Apply perpendicular force to center of span (X) with
of span length or 1.5mm per 100mm of span length.
3 -
A force below these values indicates and underten-
sioned belt. A force above these values indicates an
overtensioned belt.
MEASURE BELT TENSION
DEFLECTION 1/64” PER INCH OF SPAN
OR 1.5mm PER 100mm OF SPAN
FORCE
FIGURE 13
F-Field-Furnished Blower Drives
See BLOWER DATA tables for blower drives.
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