IOM – FLEXY II – 1007 – E Page 33
BELT TEN SI ON
On deliv ery, the driv e belts are new and correctly
tensioned. After the first 50 operating hours check and
adjust the tension. 80% of the total elongation of belts is
generally produced during the first 15 hours of operation.
Bef ore adjusting the tension, make sure that the pulleys
are correctly aligned.
To t ension t he belt, set t he height of m ot or s upport plat e
by moving the plate adjustment screws.
The rec ommended def lec t ion is 20 m m per met er f rom
centre to centre.
Check that according to the diagram below (f igure 12), the
following ratio remains the same.
The belt s s hould alway s be replaced when:
- The disk is set to maximum,
- The belt rubber is worn or the wire is visible.
Replacement belts must have the same rated size as the
ones they are replacing. If a transmission system has
several belts, they must all be f rom the same
NOTE:
An under-tensioned belt will slip, heat and wear
prematurely. On the other hand, if a belt is over-tensioned,
the pressure on the bearings will cause them to over-heat
and wear prematurely. Incorrect alignment will also cause
the belts to wear prematurely.
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