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9 - 1
Siemens AG ⋅ May 1998
The devices should be stored in dry and clean rooms. For storage of devices or related spare moduĆ
les the applicable temperature range is -25 _Cto+70_C (refer to chapter 3.1, technical data).
The relative humidity must not cause condensation or ice.
It is recommended to limit the temperature range for storage to values between +10 _C and
+35 _C in order to avoid early ageing of the electrolytic capacitors in the power supplies.
Furthermore it is recommended to connect the devices every two years to auxiliary voltage, so that
the electrolytic capacitors in the power supplies are formatted. The same procedure should be folloĆ
wed before installing these devices. In case of extreme climatic conditions (tropical), this pre-heats
the device and avoids condensation.
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