Wenglor SEFG Muting, Operating Instructions Manual

Page: 162 / 187

Servicing 162
12. Servicing
DANGER!
Risk of safety device failure!
• No repairs may be carried out on the ESPE.
• No changes or manipulations may be carried out on the ESPE.
12.1 Maintenance
NOTE!
• This wenglor sensor is maintenance-free.
• The instructions for the annual (see Section 12.4, page 163) and daily inspection (see
Section 12.3, page 163), as well as cleaning (see Section 12.2, page 162) must be
observed.
12.2 Cleaning
NOTE!
• The panes of the ESPE must be clean at all times. They must be free from contamination,
scratches or roughening.
• Contamination of any kind has a direct impact on the signal strength of the ESPE and may
result in malfunctions.
The panes may only be cleaned with the supply voltage disconnected.
It is advisable to clean the panes regularly. The frequency of the cleaning depends on the level of contamina-
tion on the system.
Cleaning takes place with a clean, soft and damp (to prevent electrostatic charge) cloth, without putting any
pressure on the pane.
Do not clean the ESPE with solvents or cleaning agents which could damage the device (aggressive, abra-
sive, scratching).
To guarantee good and lasting legibility of the segment display, the same cleaning measures are recom-
mended as for the panes.
After cleaning, check the function of the safety device (see
Section 12.3, page 163 ).