Siemens SIMATIC HMI OP37/Pro, Equipment Manual

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6-9
OP37/Pro Equipment Manual
Release 7/98
The illustration below shows the position of the battery cover.
Battery cover
Figure 6-8 Position of battery cover
Before replacing the battery, observe the following precautions:
!
Caution
The battery may be changed only be suitably qualified personnel.
Before replacing the battery make sure you have observed the ESD guide-
lines in the Appendix to this manual.
Before changing the battery, make sure the power supply is turned on in
order to prevent a loss of data – passwords for example.
To change the battery, proceed as follows:
1. If you have installed a direct key module, you must unscrew it
(Section 5.2.1) to gain access to the battery cover (refer to Figure 6-8).
!
Caution
Before removing the direct key module you must switch off the OP! You must
then switch the power supply on again to prevent loss of data when replacing
the battery.
2. Tilt the cover with the exhausted battery backward.
3. Detach the plug connector on the battery cable.
4. Remove the battery from the cover.
5. Fit new battery by following the reverse procedure.
!
Caution
Used lithium batteries are classed as special-category waste and must be disposed
of accordingly. They should be placed individually in plastic bags and sealed.
Battery cover
Before replacing
Replacing the
battery
Servicing/Maintenance