Maintenance And Fault Rectification; Maintenance; Rectify Faults - Vega VEGAWELL 52 Operating Instructions Manual

Maintenance

Cleaning
Reaction when malfunc-
tion occurs
Causes of malfunction
Fault rectification
24 hour service hotline
Check the 4 ... 20 mA
signal
VEGAWELL 52 • 4 ... 20 mA/HART
8 Maintenance and fault rectification
8.1 Maintenance
If the instrument is used properly, no special maintenance is required
in normal operation.
In some applications, product buildup on the diaphragm can influence
the measuring result. Depending on the sensor and application, take
precautions to ensure that heavy buildup, and especially a hardening
thereof, is avoided.
If necessary, clean the diaphragm. Make sure that the materials are
resistant against the cleanig, see resistance list under "Service" on
"www.vega.com".
8.2

Rectify faults

The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
VEGAWELL 52 offers maximum reliability. Nevertheless, faults can
occur during operation. These may be caused by the following, e.g.:
•
Sensor
•
Process
•
Voltage supply
•
Signal processing
The first measures to be taken are to check the output signals as well
as to evaluate the error messages via the display and adjustment
module. The procedure is described below. Further comprehensive
diagnostics can be carried out on a PC with the software PACTware
and the suitable DTM. In many cases, the causes can be determined
and the faults rectified this way.
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 manned 7 days a week round-the-clock. Since we offer
this service worldwide, the support is only available in the English
language. The service is free, only standard call charges are incurred.
Connect a multimeter in the suitable measuring range according to
the wiring plan.
Error code Cause
4 ... 20 mA Level fluctuations
signal not
No atmospheric pres-
stable
sure compensation
8 Maintenance and fault rectification
Rectification
– Set damping (integration time)
– Check the capillariy and cut it clean
– Check the pressure compensation
in the housing and clean the filter
element, if necessary
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