SICK MERCEM300Z, Operating Instructions Manual

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68 MERCEM300Z · Operating Instructions · 8013255 V2.0 · © SICK AG
Clearing Malfunctions
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8.1
If the device does not function at all …
8.2
When measured values are obviously incorrect …
8.3
Malfunction messages
A malfunction has occurred when:
●
The measured values blink.
●
The “ yellow ” LED lights.
●
The “ red ” LED lights.

Press the < Diag > button for more information.
8.4
Stand-by
When a malfunction occurs, the device switches to “Stand-by“:
●
The sample gas path (including gas sampling system) is purged with instrument air.

Press the < Diag > button for more information.
Possible cause Notes
Power supply has failed.

Check the power supply (e.g. external switch, external fuses).
Internal fuse defective.

Check fuses (

p. 69, §8.6).
Software not working correctly.

Switch the device off with the external mains switch and switch
it on again after a few seconds.
Possible cause Notes
The device does not measure the
sample gas.

Check the measured medium path and all valves (e.g. switch-
ing from the test medium to the measured medium).
Sample gas path not gas-tight.

Check the installations.
The device is not adjusted correctly.

Perform an adjustment (

p. 41, §5.4); check the test media
first (setpoint value, service life, throughflow, setting in menu
2.3.1).
More information concerning the causes:

Controls and indicators/displays

p. 33, §4.3

Classifications (device state)

p. 34, §4.4.2

List of error messages and possible causes

p. 70, §8.7
More information concerning the causes:

Classifications (device state)

p. 34, §4.4.2

List of error messages and possible causes

p. 70, §8.7