25
Troubleshooting
Indication, diagnosis and remedy
Switchpoint has been reached - incorrect function
Status and indication
Error
Remedy
Incorrect function when
switchpoint is reached
The electrode tips have been cut
to the wrong length.
Assign the electrode rods correctly and change
connections on the electronic module.
The code switch setting is
incorrect.
Set code switch according to the selected
function.
Level switch is not working
No supply voltage. LED Power
ON not illuminated
No supply voltage.
Switch on supply voltage. Check all electrical
connections.
No function.
The earth connection to the
vessel is interrupted.
Clean seating surfaces and screw level switch
together with metal joint ring in place. Do not
insulate the electrode with hemp or PTFE tape!
Electronic module defective.
Replace electronic module.
Replacing electronic module
Before exchanging the electronic module take the level switch out of service and cut off its voltage
supply.
1. Undo the cover screws
(
and remove the housing lid
)
.
(Fig. 3, 4)
2. Pull the electrode wires off the terminal lugs
"
on the electronic insert.
Unplug all terminal strips
6
,
8
,
$
.
3. Undo the PE connection
0
.
4. Unscrew the fixing screws
9
of the electronic module and take out the electronic module. The mod-
ule is available as spare part.
Stock code #
NRGS 15-1
321357
NRV 1-47
230 V AC
5. Install the new electronic module in reverse order.
Note
When ordering spare parts please state the material number indicated on the name plate.
After replacing the electronic module please re-commission the equipment.
- continued -
