Maintenance; Important Information On Maintenance; Replacing Seals In Contact With The Process Medium - Mettler Toledo InTrac 785 Instructions D'utilisation

InTrac ® 785
6

Maintenance

InTrac ® 785
52 403 859
6.1

Important information on maintenance

Danger! The information and instructions given in Section 1 and Section 2 must be fully
adhered to.
Caution! Maintenance and service work on the housings may only be carried out by
appropriately trained personnel.
Only original spare parts from METTLER TOLEDO may be used, otherwise all guarantees become
automatically invalid.
Only the maintenance and repair work described in the following Sections may be performed on
the retractable housings.
Caution! It is possible that the process medium could harm the environment and your health
(toxic, caustic, corrosive, etc.). Therefore, ensure that the equipment is in a non-hazardous
condition before you start with any maintenance work.
Danger! Before startup, the housing must be checked to ensure that:
– the right types of O-ring have been selected and that they are undamaged and correctly
positioned.
Attention! Only original spare parts from METTLER TOLEDO may be used, otherwise all
guarantees become automatically invalid.
6.2

Replacing seals in contact with the process medium

All seals that come into contact with process medium should always be replaced at least
every 6 months for reasons of safety. With aggressive media, the seals may need to be
changed at correspondingly shorter intervals. Medium-wetted seals must be examined at least
monthly, as well as during normal maintenance procedures, to check for dirt or damage.
Frequent insertion and retraction motion of the immersion tube can also have an influence on
the necessary maintenance intervals.
Attention: Seals are wearing parts which must be regularly examined by the operator of the
housing, and replaced if necessary (dependent upon application).
Replacement of medium-wetted seals
METTLER TOLEDO recommends that medium-wetted seals should under all circumstances be
replaced at least every 6 months.
Check on medium-wetted seals
METTLER TOLEDO recommends that medium-wetted seals should under all circumstances be
examined and checked every 3 months.
In the case of aggressive or abrasive media, the seals may need to be checked at shorter
intervals.
© 07 / 12 Mettler-Toledo AG, CH-8606 Greifensee
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Printed in Switzerland