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8
Maintenance, cleaning, troubleshooting
8.1
Service
There is a service counter and an operating hours counter in the device. The service counter counts
when a signal that has to be monitored is set.
Service counter
Operation hours counter
Service interval counter
Operating time counter
8.2
Maintenance
The device is maintenance-free. In the event of damage, e.g. due to transport, maintenance, or faults
during operating, it is not permissible to carry out repairs on the device. If the device is opened up, the
warranty claim becomes void.
In the event of any damage, send the device to your responsible service partner. See back cover of this
operating manual.
8.3
Cleaning
When delivered, the membrane keyboard and the display have a protective film. If the device front be-
comes dirty during operation, clean the device front with a soft cloth and mild soapy water.
CAUTION!
Risk of damaging the device front!
Cleaning agents such as gasoline, solvents, and abrasive cleaning agent as well as cleaning the device
with a high-pressure cleaner can cause irreparable damage to the device front.
Always clean the device front with a soft cloth and mild soapy water.
8 Maintenance, cleaning, troubleshooting
The device counts the number of "low-high edges" of a binary
signal. For service purposes, the device saves further parame-
ters irrespective of the individual settings:
•
Operation time for the service
•
Terminal temperature
•
Switching cycles
The device measures the switch-on time of a binary signal.
If the device detects that the service interval (limit value) has
been exceeded, it raises the alarm by means of a service signal.
If the acknowledgement signal is reset, the service interval
counter restarts.
The device counts the operating hours only if the operating hours
counter is set to "Display in hours" or "Display in days".
If the operating hours counter is set to "Off", the device resets the
counter.
The counter counts up to the end of its value range and remains
at this point.
65
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Table of Contents
Troubleshooting
