Manipulation Of And Maintenance Work On The Housings; Housings With Ball Valve Sealing; Installation In Pressurized Systems - Mettler Toledo InTrac 785 Instructions D'utilisation

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© 07 / 12 Mettler-Toledo AG, CH-8606 Greifensee
Printed in Switzerland
2.9.2

Manipulation of and maintenance work on the housings

Attention: Before dismantling a retractable housing or commencing any maintenance work on
it, ensure that the equipment in which the retractable housing is installed is in a safe condition
(depressurize, no explosion risk, empty, rinse, vent, etc.). Retractable housings may only be
stripped down after having been completely dismounted.
Manipulation of the housings may only take place after it is has been ensured that no process
medium can escape through the housing in the event of incorrect manipulation.
For this reason, the complete system must be emptied and vented in advance (safe condition).
It is principally necessary to wear personal protective outfit such as protective goggles and
clothing.
Only such maintenance and repair work as is specifically described in this Instruction Manual
may be performed on the retractable housing.
Only original spare parts from METTLER TOLEDO may be used for replacing defective
components (see Section 8.2 «Spare parts»).
Danger! Non-compliance with the prescribed maintenance instructions can endanger personnel
and the environment.
2.9.3

Housings with ball valve sealing

Caution! Housings with ball valve sealing cannot assure permanent sealing of the process
medium from the flushing chamber during insertion and retraction operations.
An optional flushing chamber (see accessories page 36) can be fitted to prevent flowback of
the medium. This allows sealing water to be created while the housing is withdrawn (must be
installed by the customer) in order to generate counter-pressure in respect of the process. This
also cleans the sensor at the same time.
2.9.4

Installation in pressurized systems

Attention: The maximum permissible temperature and pressure specifications must not be
exceeded. The values depend upon the design and type of the retractable housing. The relative
specifications are given on the type plate of the individual housings.
Danger! If temperature and pressure limits are exceeded, there is a risk to the integrity of the
system, thereby presenting a potential threat to human life and to the environment.
Housing Material
InTrac785 1.4435 / 316L, Alloy C22, Ti
Max. permissible pressure [PS] / [TS]
16 bar/130 °C 232 psig/266 °F
InTrac ® 785
InTrac ® 785
52 403 859