Maintenance/Repairs
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2. Release the cap nut ➋ land unscrew the threaded rod with the cap nut from
the threaded bushing.
3. rRelease the screw connection at the positive pole
➌ .
4. Slightly pull out the battery and release the screw connection at the negative
pole.
5. Remove the supply leads.
6. Connect the supply leads first to the positive pole of the batteries and then to
the negative pole.
7. Assemble the threaded rod.
8. Put on the protective hood and screw tight.
9.3.2 Replace batteries for date/time
If the wrong date and the wrong time is shown in the display, the battery of the
circuit board behind the display must be replaced.
To replace the battery, carry out the following steps:
1. Switch off the device and disconnect from the mains.
2. Open the control housing. The circuit board is located in the housing lid.
3. With a slight twist, press the battery
➊ against the bottom spring bracket ➌
and pull up to remove.
CAUTION
• Do not use metallic tools to replace the battery.
• Use only batteries of the type 3 V lithium CR 2032.
CAUTION
Figure 9/8: Remove battery for date/time
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