VEGA VEGABAR S 14 - Manual (Page 20)

6 M
aintenance and fault
rectification
6 .1
Maintenance
If the instrument is used properly, no special
maintenance is required in normal operation.
6 .2
Fault rectification
Failure reasons
VEGABAR S 14 offers maximum reliability.
Nevertheless, faults can occur during operation.
These may be caused by the following, e.g.:
l
Sensor
l
Process
l
Voltage supply
l
Signal processing
Fault rectification
The first measure to be taken is to check the output
signal. In many cases, the causes can be
determined this way and the faults rectified.
24 hour service hotline
Should these measures not be successful, please
call in urgent cases the VEGA service hotline under
the phone no. +49 1805 858550.
The hotline is available to you 7 days a week
round-the-clock. Since we offer this service world-
wide, the support is only available in the English
language. The service is free of charge, only the
standard telephone costs will be charged.
Checking the 4 … 20 mA signal
?
4 … 20 mA signal not stable
l no atmospheric pressure compensation
à Check the pressure compensation in the
plug or via the capillaries
? No 4 … 20 mA signal
l Connection to voltage supply wrong
à Check connection according to chapter
"C
onnection steps" and if necessary,
correct according to chapter "Wiring plan"
l No voltage supply
à Check cables for breaks; repair if neces-
sary
l Supply voltage too low or load resistance
too high
à Check, adapt if necessary
?
Current signal 22 mA
l electronics module or measuring cell de-
fective
à Exchange the instrument or send it in for
repair
In Ex applications, the regulations for the
wiring of intrinsically safe circuits must be
observed.
6 .3
Instrument repair
If a repair is necessary, please proceed as follows:
You can download a return form (23 KB) from our
Internet homepage www.vega.com under: "Down-
loads - Forms and certificates - Repair form".
By doing this you help us carry out the repair
quickly and without having to call back for needed
information.
l
Print and fill out one form per instrument
l
Clean the instrument and pack it damage-proof
l
Attach the completed form and, if need be, also
a safety data sheet outside on the packaging
l
Please ask the agency serving you for the
address of your return shipment. You can find
the respective agency on our website www.
vega.com under: "Company - VEGA world-
wide"
20 VEGABAR S 14
Maintenance and fault rectification
32950
-01
-101123