Mettler Toledo WMS Manual De Usuario página 10

5 Maintenance
To ensure that your weighing module remains reliable, accurate, and functional for many years to
come, the individual components must be cleaned and maintained periodically as appropriate for the
intensity of use and the risk of contamination with debris.
5.1 Cleaning
The dual labyrinth protects the interior of the module against penetration of solids, such as powder,
and liquids. It is very important to keep the area between the weighing platform and the upper part of
the housing clean to ensure perfect operation of the module. Cleaning is made easier by the smooth
surface of the stainless steel housing and by the fact that the labyrinth ring can be removed without
the use of tools.
Note
You can use any conventional cleaning solution but no aggressive solvents that could damage the
seal sets.
Cleaning with labyrinth protection
NOTICE
AttentionMake sure that no dirt or cleanser can get into the interior of the WMS weigh module
(especially when the weighing platform is removed)!
1 Remove the round or square weighing platform. Make sure that
no dirt can get into the interior of the module through the opening.
2 Clean the areas around the labyrinth ring thoroughly.
3 Remove the labyrinth ring by squeezing the ring together on the
long side of the weigh module and lifting it off.
4 Remove the last contamination.
5 Replace the labyrinth ring and the weighing platform.
Cleaning with the "Wash-down" option
The WMS weigh module with "wash-down" option has an inflatable seal set under the weighing
platform that allows the weigh module to be cleaned with a water spray or gentle water jet.
NOTICE
AttentionMake sure that no dirt or cleanser can get into the interior of the WMS weigh module
(especially when the weighing platform is removed)!
Cleaning with a spray
1 With the weighing platform in place, activate the seal set with an
air pressure of 1 bar. This inflates the bellows.
2 Check that the seal set is working by attempting to turn slightly the
weighing platform. If the weighing platform remains firmly seated,
the seal set is activated.
NOTICE
Do not use the water jet until you have performed this check.
3 Dry off the housing and release the air from the seal set.
4 Remove the weighing platform and clean the area around the
labyrinth ring thoroughly.
5 Remove the labyrinth ring by squeezing the ring together on the
long side of the weigh module and lifting it off.
6 Remove the last contamination.
7 Replace the labyrinth ring and the weighing platform.
10 Maintenance Weigh Modules