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12 Maintenance and Service
12.1 Cleaning
For cleaning of keys and housing, we recommend surface-active, non-abrasive, neutral
cleaning agents.
Warning!
We do not guarantee resistance to concentrated acids or lyes, benzyl alcohol,
methylene chloride and high-pressure steam.
12.2 Fuse Replacement
Non-Ex Version:
Turn fuse holder in the direction of the arrow with a screwdriver to open (see figure 12.1)
and replace blown fuse with a new type M 3.15 A / 250 V fuse.
Ex-Version:
Replacement of the fuse module must be done by authorized service personnel only.
Order No.:
50076930 100V to 230 VAC
50076931 24 VAC
50087807 24 VDC
12.3 Repairs
Repair work must be carried out directly by the manufacturer or by the Endress+Hauser
Service Organization. See the back cover of these operating instructions for a list of the
Endress+Hauser service representatives.
Figure 12.1
Fuse holder of non-Ex
version
Open
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