7
Inspection and maintenance
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7.16
Remaining service life
The operating mode and operating time must be established by the owner, see section
1.3 and recorded in the logbook in order to calculate the remaining service life.
After the service life has expired a general overhaul (S.W.P. = Safe Working Period) must
be carried out.
Fig. 101
7.16.1
Operating hours counter in SLE load monitor
The operating hours counter in the load monitor of the overload safety device adds up
the operating time of the hoist. In order to obtain the lifetime expired in full load hours, the
operating hours must
be calculated with load factor “k”
. This is carried out by a qualified
person
during the annual “
periodic inspection
”
.
If 90% of the theoretical full load lifetime has expired, a general overhaul (GO) must be
scheduled and carried out at the earliest possible date.
A general overhaul must be completed after 10 years at the latest.
7.16.2
SMC multi-controller (optional)
The operating time of the hoist and the full load operating hours are recorded in the SMC.
The SMC calculates the full load operating hours from the relevant hoisted load and the
operating hours of the hoist. The remaining service life is calculated with reference to the
mechanism group and can be read off by means of a PC (laptop).
If the theoretical full load lifetime has expired, also indicated by an illuminated red LED, a
general overhaul must be scheduled and carried out.
Reading the full load operating hours does not replace the prescribed tests
including inspecting the wearing parts (rope, return sheaves...).
.
7.17
General overhaul
The mechanism (motor and gear; not applicable to wearing parts) of the YK/SK wire rope
hoist is classified according to ISO. The theoretical full load lifetime in hours shown
opposite (D) is applicable for normal hoist applications.
ISO
M4
M5
M6
M7
D [h]
800
1600 3200 6400
Tab. 45
If the full load lifetime (D) minus the lifetime expired is nought, the wire rope hoist must
be overhauled by the manufacturer.
NOTICE
Danger of material damage.
Components which are in the power flux may only be
overhauled by the manufacturer.
The rope drive is classified according to FEM 9.661, see factory certificate.
As the service life of components such as gears is limited in accordance with the
classification, it must be ensured that this is not exceeded. After the scheduled service life
has expired hazards may arise. Thus the operator must take the responsibility for the
remaining service life and the necessity of a general overhaul.
We cannot accept any liability for damage occasioned by non-observance.
