26
Example of dirty measuring electrodes
Maintenance
Cleaning the measuring electrode
The conductivity transmitter may only be installed and removed by qualified specialist staff. Please pay
attention to the note in the "Installation" section on pages 11 and 12.
Before cleaning the measuring electrode(s), take the conductivity transmitter out of operation and
remove it.
Clean the measuring electrode
(LRGT 16-1, LRGT 17-1)
or electrodes
(LRGT 16-2)
:
Use a fat-free cloth to wipe off loose deposits.
Use abrasive linen (medium grain, e.g. 400 μm) to remove encrusted deposits.
For
LRGT 16-1, LRGT 17-1
you can also slacken the locking grub screw
4
, unscrew the measuring
tube
2
by hand, and then clean the electrode rod and measuring surface.
Fig. 2
Safety note
Danger
Steam or hot water can escape when the conductivity transmitter is loosened.
This presents a risk of severe scalding all over the body!
Therefore, only dismantle the conductivity transmitter when the boiler pressure is 0 bar.
The conductivity transmitter becomes hot during operation.
Risk of severe burns to hands and arms.
Make sure that equipment is cold before carrying out installation and maintenance work.
The equipment may only be installed, wired and commissioned by qualified and competent staff.
Retrofitting and maintenance work may only be performed by authorised staff who have achieved a
recognised level of competence through specific training.
