Maintenance - SICK PLS Serie Manual Del Usuario

PLS GB

7.2 Maintenance

When set up appropriately by authorized personnel using the
user software, the PLS reports minor dirt contamination of the
front screen with the dirt warning (when the device is func-
tioning fully) as well as severe dirt contamination of the front
screen (and shuts down the outputs at the same time).
Clean the front screen if the device's dirt warning is activated.
This is indicated by the slow flashing of the yellow LED while
the green LED shines constantly (protective field clear). The
front screen is an optical component and must not be
scratched. Therefore clean it only with a soft cloth and plastic
cleaner. (Recommended: Antistatic plastic cleaner, 1 litre,
order no. 5 600 987)
If the screen is scratched it must be replaced. The order num-
ber of the replacement front screen (including seals and
screws) can be found in the chapter Accessories in the PLS
technical description. As the PLS must be readjusted after re-
placement of the front screen, please advise your safety offi-
cer.
Regularly check the tightness of all mounting screws on the
PLS and the fixing brackets. Also check all screws on the in-
terface plugs.
Regularly check that the device is functioning correctly by
reaching into the protective field along its edges, correspond-
ing to the appropriate application regulations.
8 008 321/M844/06-05-02 Operating Instructions • PLS
179
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