Maintenance; General Information And Handling - Siemens SIPART DR21 Manual

Manual
8

Maintenance

8.1

General information and handling

The controller is maintenance-free. White spirit or industrial alcohol is recommended for clean-
ing the front foil and the plastic housing if necessary.
be changed freely without readjustment with power supplied. The other modules may also be
replaced without readjustment (procedure as described in chapter 8.2).
CAUTION
All modules contain components which are vulnerable to static. Observe the
safety precautions!
S-actuators on S-controllers remain in their last position.
WARNING
!
The backplane module may only be changed after the power supply has been
safely disconnected.
WARNING
!
Modules may only be repaired in an authorized workshop. This applies particu-
larly to the backplane module because of the safety functions (safe disconnec-
tion and safety extra low voltages).
SIPART DR21
C73000-B7476-C143-08
8 Maintenance
8.1 General information and handling
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