27
7 Maintenance and fault rectification
VEGAWAVE 62 • Two-wire 8/16 mA
32255-EN-181126
Error
Cause
Rectification
VEGAWAVE 62 signals
"covered" without being
submerged (overfill pro-
tection)
VEGAWAVE 62 signals
"uncovered" when being
submerged (dry run pro-
tection)
Operating voltage too low Check operating voltage
Electronics defective
Press the mode switch. If the instrument then changes
the mode, the vibrating element may be covered with
buildup or mechanically damaged. Should the switch-
ing function in the correct mode still be faulty, return the
instrument for repair.
Press the mode switch. If the instrument then does not
change the mode, the electronics module may be de-
fective. Exchange the electronics module.
Unfavourable installation
location
Mount the instrument at a location in the vessel where
no dead zones or mounds can form.
Buildup on the vibrating el-
ement
Check the vibrating element and the sensor for buildup
and remove the buildup if there is any.
Wrong mode selected
Set the mode switch on VEGAWAVE 62 to "max". Set
the correct mode on the signal conditioning instrument
(A: overfill protection; B: dry run protection).
Signal lamp flashes red
Error on the vibrating el-
ement
Check if the vibrating element is damaged or extreme-
ly corroded.
Interference on the elec-
tronics module
Exchanging the electronics module
instrument defective
Exchange the instrument or send it in for repair
Depending on the reason for the fault and the measures taken, the
steps described in chapter "
Set up
" may have to be carried out again.
7.3 Exchanging the electronics module
In general, all electronics modules of series WE60 can be inter-
changed. If you want to use an electronics module with a differ-
ent signal output, you can download the corresponding operating
instructions manual from our homepage under Downloads.
With Ex-d instruments, the housing cover may only be opened if there
is no explosive atmosphere present.
Proceed as follows:
1. Switch off voltage supply
2. Unscrew the housing lid
3. Lift the opening levers of the terminals with a screwdriver
4. Pull the connection cables out of the terminals
5. Loosen the two screws with a screw driver (Torx size T10 or slot
4)
Checking the switching
signal
Reaction after fault recti-
fication
