KERN & SOHN HFA 10T-3 - Manual (Page 38)

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 suspended balances. 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 9.3).
 The load suspension devices must be cleaned before inspection, see chap. 9.1.
Regular maintenance:
Prior to each usage  Check for fault-free operation of the attachment devices
Initial start-up,
every 3 months or
definitely after
12 500 weighing
processes
 Check all dimensions, see checklist chap. 9.3
 Check the suspended balance and the used attachment
device for wear and tear, such as e.g. plastic deformation,
mechanical damage (unevenness), notches, striation,
cracks, corrosion and torsions.
 Remove balance from use immediately if a reading exceeds
the permitted deviation from the original reading (see
checklist, chap. 9.3) or any other fault is identified.
Every 12 months or
in any case after
50 000 weighing
processes
 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
Every 10 years or
anyway after 500 000
weighing processes
 Replace entire suspended balance
Note
For inspection of wear and tear please refer to the drawing (See chap. 9.3) below.
Rejection criteria: Load suspension devices may no longer be used when e.g.
+
If deviations during the tests defined for maintenance were discovered.
+
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.
38 HFA-BA-e-1511