User's Manual

Page 62 Sitrans LR 400 – INSTRUCTION MANUAL 7ML19985FH01
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Tro uble sh oot ing
Troubleshooting
The SITRANS LR 400 has left the factory in a fully tested condition. Carefully selected
components and compliance with prescribed quality standards guarantee the high
reliability of the SITRANS LR 400. In the unlikely event of a fault, please consult the
instructions in this chapter before contacting the responsible customer services.
Classification of faults
Faults occurring in the SITRANS LR 400 can be classified in the following groups:
• faults caused by ambient influences: over and undertemperature, moisture,
contamination by the measuring medium and other substances, mains faults,
vibration
• faults in the device: display, electronics, mechanics, connections
Please try to determine the fault and localize it as accurately as possible..
If the fault cannot be eliminated with the measures described, follow the instructions in
“Maintenance and repairs” on page 65.
Self-test
If you get fault messages after the self-test, please proceed according to “Fault
messages” on page 64.
If there is a malfunction in the device, you can also activate the self-test manually with
Parameter 3.2.1.
Note: The device performs a self-test every time it is switched on. It is ready for
operation when the LCD displays the multi-display and the control elements can be
operated.
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