KERN and SOHN 4.3 Mode D'emploi page 81

Regular maintenance:
Prior to each usage
Initial start-up,
every 3 months or
definitely after
12 500 weighing
processes
Every 12 months or
in any case after 50
000 weighings
Every 10 years or
anyway after 500,000
weighings
Note
During the revision watch out for wear and tear according to the following drawings
(chap. 8.3).
Rejection criteria: Load suspension devices may no longer be used when e.g.
+
Deviations are identified during the inspections specified for servicing.
+
The type or load rating plate is missing.
+
Load suspension devices known to have been overloaded or subject to
other harmful influences may no longer be used and/or may be re-used only
after inspection.
37
• Check for fault-free operation of the attachment devices
• Check all dimensions, see checklist chap. 8.3
• Check the attachment device for wear and tear, such as e.g.
plastic deformation, mechanical damage (unevenness),
notches, striation, cracks, corrosion, thread damage and
torsions.
• Check safety fastening on the attachment device for faults
and fault-free operation.
• Remove balance from use immediately if a reading exceeds
the permitted deviation from the original reading (see
checklist, chap. 8.3) or any other fault is identified.
• All repairs and replacement parts (e.g. hook) must be
documented by the service partner (see list, chap. 9.2).
• If the enhanced maintenance has to be carried out by
trained staff (KERN customer service). At this general
revision all load carrying parts must be checked for gaps
with magnetic powder
• Replace the crane scales entirely
HCB_HCN-BA-e-1543