VEGA VEGACAP 64 - two-wire - Manual (Page 19)

19
7 Maintenance and fault rectification
VEGACAP 64 • - two-wire
30015-EN-130916
7 Maintenance and fault rectification
7.1 Maintenance
If the instrument is used properly, no special maintenance is required
in normal operation.
7.2 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
VEGACAP 64 offers maximum reliability. Nevertheless, faults can oc-
cur during operation. These may be caused by the following, e.g.:
•
Sensor
•
Process
•
Voltage supply
•
Signal processing
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.
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.
Error Cause Rectification
– The instrument
signals covered
without cover-
ing with the
medium
– The instrument
signals covered
with cover-
ing with the
medium
Wrong mode se-
lected on the
signal condition-
ing instrument
Set the correct mode on the mode
switch of the signal conditioning in-
strument (A: overflow protection, B:
dry run protection). Wiring should be
carried out according to the quiescent
current principle.
Operating voltage
too low
Check operating voltage
Shortcircuit in the
probe, e.g. be-
cause of moisture
in the housing
Remove the electronics module.
Check the resistance between the
marked plug connections. See the fol-
lowing instructions.
Electronics de-
fective
Push the mode switch (A/B) on the
signal conditioning instrument. If the
signal conditioning instrument then
changes the mode, the probe may
be mechanically damaged. Should
the switching function in the correct
mode still be faulty, return the probe
for repair.
Reaction when malfunc-
tions occur
Failure reasons
Fault rectification
24 hour service hotline
Checking the switching
signal