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Niro Soavi S.p.A
4.7.3 STRETCHING THE BELTS
WARNING: Control and servicing operations must be carried out WITH THE
MACHINE NOT IN OPERATION and with the sectioning switch of the imput
line LOCKED (by means of a lock) IN OPEN POSITION for the safety of the
personnel.
WARNING: The V-belt transmission may create danger of crushing or
entrapment. Use always the necessary fixed protections and in case
remove them only after having checked the machine to be completely
stopped in any moving part.
The ideal stretch is the lowest at which the belts do not slip under maximum load.
During the first 24-48 hours of running-in, check the stretch frequently; remember
that excessive stretch reduces the life of the belts and of the bearings that
support the drive.
Arrange for the stretch to be tightened as soon as any slipping occurs.
Belt slipping can cause overheating and create hazard particularly if the machine
is designed for operation in danger zones (explosion-proof version).
The following are two methods to identify the correct degree of stretching of the
belts; the first, which is easier, can be used when a new train of belts is installed,
or after loosening them completely; the second allows stretch to be checked even
during normal operations of servicing and control. The procedures of the
operations are described in paragraph 4.7.2.
4c071e0c.doc 4.7.7
Summary of Contents for ARIETE
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