KERN HFM Series Operating Instruction page 64

Regular maintenance:
Initial
Commissioning,
every 3 months or
anyway after
12 500 weighings
Every 12 months or
in any case after
50 000 weighings
Every 5 years or
anyway after
250 000 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. 9.3).
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 Check all dimensions, see checklist chap. 9.2
 Check the shackle or the eyelet for wear and tear, such as
e.g. plastic deformation, mechanical damage (unevenness),
notches, striation, cracks, corrosion, thread damage and
torsions.
 Check the application of the safety bracket on the hook,
moreover check for fault and correct function
 For balances of big construction size: Check that the split pin
and the nut on the shackle are not loose
If a dimension exceeds the admitted deviation from the original
dimension (see checklist, chap. 9.3) or if other discrepancies
have been found, the balance must be repaired at once by
trained specialized staff (KERN customer service). Never do
repair it by yourself!
Take balance out of operation immediately!
All repairs and spare parts must be documented by the service
partner (see list, chap. 10.2).
 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
 All load carrying parts have to be exchanged by trained
specialized staff (KERN customer service).
 Replace the crane scales entirely
HFM-BA-e-1813