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6.4.5 Poly V-belt tension adjustment
To check the cooler fan poly V-belt tension, measure
the belt frequency. Use tensioning tool 2913 0022 00.
The arrows show where the frequency should be
measured.
The correct belt frequency is 50 Hz ±2.5 Hz.
Correct the V-belt tension by loosening the fixing
screw (1) of V-belt tensioner (2). Loosen the lock nut
on the adjusting screw (3). Turn the adjusting screw
clockwise to increase V-belt tension or counter-
clockwise to decrease V-belt tension.
After adjusting the V-belt tension, retighten the
adjusting screw lock nut and the fixing screw.
6.4.6 MP safety valve adjustment
– A check of the opening of the lifting gear, once a
year.
– A check of the set pressure once a year according
to the local regulations. This check cannot be done
on the unit and must be carried out on a proper test
bench.
All adjustments and repairs and
following checks must be done by
an authorized representative of the
valve supplier.
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