Freeze-dryer Epsilon 1-4 LSCplus
Freeze-dryer Epsilon 2-4 LSCplus
3 Safety
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Version 07/2022, Rev. 3.0 of 20/07/2022
• sb
Translation of the original operating manual
• perform a compatibility test of all the substances that are used in the
freeze-dryer (products to be dried as well as cleaning agents, etc.) and
that come into contact with the chamber walls, shelves, pipes/hoses
and seals. Substances that damage the material or weaken the
mechanical strength must not be used.
• ensure that the freeze dryer is operated with one of the vacuum pumps
approved by Martin Christ Gefriertrocknungsanlagen GmbH (see
chapter 5.2.3 - "Vacuum pumps").
• have the system maintained at regular intervals (see chapter 8 -
• check the safety devices regularly to ensure their correct operation (see
chapter 3.8 - "Safety devices").
• replace without delay any parts or components that are not in perfect
working order.
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3.3.1
Freeze-drying of solvent-containing products
With regards of corrosion resistance, the use of some organic in aqueous
solutions with low concentrations is acceptable.
Under certain circumstances, the freeze-drying of products containing
solvents may lead to the formation of explosive mixtures. This is why the
operator must draw up special operating instructions/SOPs including
precise instructions
• concerning the deactivation of specific components (see chapter 1.3.1 -
"Freeze-drying of solvent-containing products (non-aqueous media)"),
• concerning the inspection of the freeze-dryer in view of damage caused
by the solvent that is used (see chapter 1.3.1 - "Freeze-drying of
solvent-containing products (non-aqueous media)").
The operator ensures sufficient air exchange in the room where the freeze-
dryer is used if nitrogen is used as the aeration/inertisation medium.
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