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9 Maintenance and fault rectification
VEGACAL 64 • Two-wire 4 … 20 mA/HART
30030-EN-200929
9 Maintenance and fault rectification
9.1 Maintenance
If the device is used properly, no special maintenance is required in
normal operation.
The cleaning helps that the type label and markings on the instrument
are visible.
Take note of the following:
•
Use only cleaning agents which do not corrode the housings, type
label and seals
•
Use only cleaning methods corresponding to the housing protec-
tion rating
9.2 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
The device 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
Cause
Rectification
4 … 20 mA signal not sta-
ble
Fluctuating measured
value
Adjust damping e.g. via the display and adjustment
module
Maintenance
Cleaning
Reaction when malfunc-
tion occurs
Causes of malfunction
Fault rectification
24 hour service hotline
Check the 4 … 20 mA
signal
