Regular Maintenance And Care - KERN HUS Series Instruction Manual

9.2

Regular maintenance and care

 The regular 3-month maintenance may only be carried out by an expert with
competent knowledge of working with crane scales. Thereby the national
regulations for prevention of accidents as well as the working, operation and
safety regulations of the owner-operator.
 To check the dimensions only use suitable test devices.
 The regular 12-month maintenance must only be carried out by trained
specialized staff (KERN customer service).
 The results of the maintenance must be written down in the checklist (chap. 9.3).
 The additional results of the extended maintenance have to be entered in the
checklist (chapter 10.1).
 The replaced spare parts also must be entered, (chapter 10.2)
Regular maintenance:
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 5 years or
anyway after
250 000 weighings
Every 10 years or
anyway after
500 000 weighings
Important note
When checking for wear and tear please refer to the drawing (KERN HUM fig. 3,
chap. 9.3.1; KERN HUS fig. 4, chap. 9.3.2) below.
HUS/HUM-BA-e-1131
 Check all dimensions, see checklist chap. 9.3
 Check the shackle 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
 Ensure that the positioning screws at 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
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