Xylem YSI VARiON Plus 700 IQ H, Руководство по эксплуатации, Страница: 40 / 62

Maintenance and electrode exchange VARiON
® Plus
700 IQ H
40
ba76207e02 12/2020
If you need to disconnect the sensor from the sensor connection cable,
please note the following points:
 Before disconnecting the sensor from the SACIQ sensor connection
cable, remove any larger pieces of contamination from the sensor,
particularly in the area of the plug connection (brush it off in a bucket
of tap water, wash it off with a hose or wipe it off with a cloth).
 Unscrew the sensor from the SACIQ sensor connection cable.
 Always place a protective cap on the plug head of the sensor and on
the SACIQ sensor connection cable so that no moisture or dirt can
get into the contacting surfaces.
 In corrosive environments, close the socket of the sensor connec-
tion cable with the screwable SACIQ-Plug when it is dry in order to
protect the electrical contacts from corrosion. The protective plug is
available as an accessory (see section 7.2 G
ENERAL ACCESSORIES
).
Cleaning the sensor Clean the sensor shaft with tap water and a soft sponge or brush.
Remove the protective hood. The electrodes are best cleaned under
running tap water using a soft toothbrush or brush.
Cleaning the coupling
ring of the protective
hood
The coupling ring can be unscrewed and dismantled for cleaning as fol-
lows:
Fig. 6-1 Dismantling the coupling ring
We recommend to clean the sensor shaft and electrodes
while the sensor is still connected to the sensor connection
cable. Otherwise, moisture and/or dirt can get into the plug
connection where it can cause contact problems.
1 Remove the retaining ring (pos. 1 in Fig. 6-1).
2 Remove the intermediate ring (pos. 2) and sealing ring (pos.
3).
1
2
3