Pilz PSEN op4B-S-3-080 - Manual (Page 55)

Operating Manual PSEN op4B Series
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8.1 Maintenance
Safety light curtains require no particular maintenance, except for
cleaning the optical covers. Moist cotton cloths should be used for
cleaning.
We recommend that you do not use:
• Alcohol or solvents,
• Cloths made of wool or synthetic material
8.2 General information and useful data
Safety devices are only beneficial if they are installed correctly, in
accordance with the regulations.
If you find that you do not have the necessary expertise to install the
safety devices correctly, please contact our technical support.
Electronic fuses protect the devices against short circuit. Once these
have reacted you will need to disconnect the power supply for at least
20 seconds and rectify the short circuit. When you reconnect the
power supply the fuses will have reset and the safety light curtain can
automatically resume normal operation.
Faults that result in a power supply failure may cause the outputs to
open temporarily, but do not adversely affect the safe operation of the
safety light curtain.
Install and replace emitter and receiver only in pairs.
Emitter and receiver have the same serial number.
Guideline for repair: Always send both emitter and receiver for repair.
(During repair, both units are programmed with the current software
version).