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During normal operation no maintenance is necessary. In case of unexpected
problems, failures or malfunctions the device must be shipped for back to
themanufacturer for checking, adjustment and reparation (if necessary).
Unauthorized opening and repairing can have negative effects or failures to the
protection-measures of the unit.
It210_01a_oi_e.docx / Jan-20
Page 6 / 21
www.hohner-elektrotechnik.de
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