Trouble Shooting - Mettler Toledo InTrac 785 Bedienungsanleitung

InTrac 785
7
© 06/2021 METTLER TOLEDO
Printed in Switzerland
Caution! No grease may be applied to the O-Ring in the immersion tube, as there is a danger
that grease could contact and adhere to the electrode / sensor tip (diaphragm / glass membrane)
when reinstalling the electrode / sensor, and have adverse effects on its function.
10. O-rings "6", "8" and "10" and guide ring "7" and carefully fit scraper ring with O-ring "9" using
an assembly tool (order no. 90 770 1790).
11. Pull entire guide unit "4" including the fixing screw "3" and the tension ring over the immer-
sion tube "5" in the order shown in the drawing above.
12. Pull adjusting ring "2" over the immersion tube "5".
13. Screw in sensor support "1". Use a no. 20 spanner.

Trouble Shooting

In this section you will find an overview of possible malfunctions which could appear during
operation of the retractable housings, their cause, as well as a guide to appropriate remedial
measures.
Danger! It is essential to comply with the safety instructions given in Section 1 and Section 2.
Malfunction
Immersion tube cannot be inserted.
Immersion tube can not be pulled out.
Immersion tube can not be pulled
out completely.
Process liquid is flowing out of the
rinsing chamber.
Process fluid is entering into the
immersion tube.
Danger! Breakage of the protection caging can lead to mixing of process medium and cleaning
medium.
Cause
Ball valve is not completely opened.
Retention nut is not open.
Ball valve is not completely opened.
Rinsing chamber is not closed.
O-ring defective.
Remedial action
Check the ball valve position.
Loosen the retention nut.
Ceck the ball valve position.
Close the outlet of the rinsing chamber
with covers or with valves.
Replace the O-ring in the electrode
holder (order O-ring set).
Retractable Housing InTrac 785
52 403 859 D
29