5.52.541.01.01.09
25
12.5
Overload protection
If the hoist does not lift the permitted load, the overload protection must be adjusted. Adjustment may only be
done by a service company, authorised by the manufacturer!
DANGER!
The factory setting of the overload protection is secured by a seal. Any guarantee becomes invalid if this setting is
changed. Should maintenance be necessary, please contact a service company that is authorised by the
manufacturer.
DANGER!
The overload protection serves exclusively to protect against damage to the device due to overloading
when moving loads. Its function must not be integrated into the operational work process!
Depending on the type of hoist, the following variants are possible:
12.5.1
Slipping clutch
Illustration 23
12.5.2
Mechanical spring assembly
In case of overload the load must be lowered until it reaches the ground so that the
spring assembly can release. Only thereafter it is possible to repeat the lifting motion.
Illustration 24
Illustration 25
12.5.3
Overload protection by pressure limiting valve
Factory setting for the desired load at 6 bar.
Normally this setting does not need to be adjusted.
Illustration 26
13
Inspection
13.1
General Overhaul for motor-driven units
The validated, national accident prevention regulations must be observed and the measures to reach "safe
working periods (S.W.P.)" according to FEM 9.755.
After the "theoretical working time D" has been elapsed, the owner/user must take motor driven devices out
of operation and effect a General Overhaul.
Further use of the equipment is only allowed after a licensed qualified person has proofed
that further use is possible without doubt
and
the conditions for further use have been determined
These conditions have to be written down in the test book.
The owner/user is responsible to make sure that these conditions are observed.
13.2
Periodic checks
Independently from the regulations of the individual countries, lifting devices must be checked at least yearly
by a qualified person or licensed qualified person regarding its functional safety.
