Removing The Retractable Housing; Operation; Important Information For Everyday Operation; Inspection Work In Everyday Operation - Mettler Toledo InTrac 785 Bedienungsanleitung

InTrac 785
4.5.2
5
5.1
5.2
© 06/2021 METTLER TOLEDO
Printed in Switzerland
Attention: Specific information on the electrode (calibration / alignment with the measuring system,
storage, etc.) is to be found in the relative documentation for the electrode or measuring system.

Removing the Retractable Housing

1. Shut down the housing (see Section 4.4).
2. Remove the electrode / sensor (see Section 4.5.1).
3. Dismantle flushing water lines if installed.
Caution! Close the connection in order to prevent ingress of dirt.
4. Undo threaded or flange connection and carefully remove housing.
Caution! Never place or support the housing on the front ends of the centering spigot or immersion
tube (risk of damage).

Operation

Important Information for Everyday Operation

Caution! No attempt may be made to move the immersion tube into the "Measuring" position
without an electrode / sensor installed, otherwise sample medium can flow out via the open
immersion tube.
During operation:
• Never remove fastening components (screw / bolts of flange, ring nut, etc.);
• Never remove the sensor with the housing in measuring position;
• Never remove the sensor unless the ball valve is closed;
• Never close the ball valve with the housing in measuring position.
If any malfunctions occur during operation, the equipment in which the housing is installed must
first be made safe before any corrective measures are taken.
For all work on the equipment during everyday operation, wear the stipulated protective clothing
(protective goggles, gloves, breathing apparatus, etc).

Inspection Work in Everyday Operation

The following inspection work should be performed in everyday operation:
• Check fastenings (ring nut, flange, NPT-thread) of the housing at the vessel for firm seating
and leaks.
• Check the condition of the electrode / sensor. A faulty or damaged electrode / sensor must be
replaced immediately.
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Retractable Housing InTrac 785
52 403 859 D