Testing; To Be Performed Prior To The Initial Start-Up By Competent Personnel; To Be Performed Periodically By Competent Personnel - Leuze electronic S20 Original Operating Instructions

9

Testing

S20 Safety Switches are maintenance free. Nevertheless, they must be replaced
after maximum 1,000,000 switching cycles.
Always replace the entire Safety Switch including actuator.
For the testing intervals, observe nationally applicable regulations.
Document all tests in a comprehensible manner.
9.1

To be performed prior to the initial start-up by competent personnel

Check whether the Safety Switch is operated according to its specified environ-
mental conditions (see chapter 14).
Test to ensure proper mechanical and electrical function (see chapter 9.2).
9.2

To be performed periodically by competent personnel

Mechanical function
Stop the dangerous state and open the protective device.
Check that the components are securely fastened.
Test the cable entry for leaks.
Check Safety Switch and actuator for damage, deposits, deformation and
wear.
Test several times whether the actuator can be easily moved into the Safety
Switch.
Electrical function
WARNING
Severe accidents may result if tests are not performed properly!
Make certain that there are no persons in the danger zone.
Stop the dangerous state and open the protective device.
Make certain that the machine cannot be started while the protective device is
open.
Close the protective device and start the machine.
Test several times whether the machine stops upon opening of the protective
device.
Leuze electronic
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S20
Testing
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