Regular Maintenance - KERN HFD Service Manual

15.3 Regular maintenance:

Initial start-up,
every 3 months or
definitely after
12500 weighings
Every 12 months or in
any case after
50000 weighings
Every 5 years or
anyway after
250000 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.
Fehler! Verweisquelle konnte nicht gefunden werden. in HFD user manual).
HFD-SH-e-1810

Check all dimensions, see checklist chap. Fehler! Verweisquelle
konnte nicht gefunden werden. in HFD user manual

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. Fehler! Verweisquelle konnte nicht
gefunden werden. in HFD user manual) 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. Fehler! Verweisquelle konnte nicht gefunden werden. in
HFD user manual).

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 balance entirely
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