Fitting The Electrode/Sensor - Mettler Toledo InTrac 785 Instructions D'utilisation

InTrac ® 785
InTrac ® 785
52 403 859
Basic installation
The basic installation is intended for cleaning/flushing of the electrodes and sensors when the
housing is in the «Maintenance» position.
– Inlet:
The inlet line is connected to the flushing water inlet (thread G 1/8") of the housing via an
appropriate shut-off device.
– Outlet:
For the water outlet, the flushing water outlet (thread G 1/8") is connected to the appropriate
drain (comply with local regulations).
Attention: The water outlet should be positioned at a somewhat higher level than the inlet so
that the chamber lock is always filled with water or buffer solution even when the inlet is closed.
This prevents the pH electrode from drying out. Where necessary, use a suitable lead-off (first
upwards) for the outlet line.
4.2.2

Fitting the electrode/sensor

1 2
1. Move the housing to maintenance position and close ball valve «4» by hand.
2. Unscrew the cable antikink «1».
3. Unscrew the protective sleeve «2».
4. Check that the correct type of electrode/sensor has been selected
(see Section 10 «Appendix»).
5. Check the electrode/sensor for damage (e.g. breakage of electrode).
Caution! A damaged electrode/sensor must never be installed.
6. Check washers and O-rings on electrodes/sensors and replace if necessary.
7. Remove watering cap from the tip of the electrode/sensor and rinse electrode/sensor
with water.
8. Carefully insert electrode/sensor into the immersion «3» tube and screw in by hand as far
as it will go.
Danger! Under no circumstances whatsoever may tools be used.
9. Remove the cover cap of the electrode/sensor screw cap connection.
10. Run the connection cable through the antikink protection «1» and protective sleeve «2»,
and connect the plug to the electrode/sensor.
11. Mount protective sleeve «2» and tighten by hand. Finally, also hand-tighten the cable
antikink protection «1».
3
© 07 / 12 Mettler-Toledo AG, CH-8606 Greifensee
25
4
Printed in Switzerland