Freeze-dryer Epsilon 2-10D LSCplus
3 Safety
Version 07/2022, Rev. 3.0 of 20/07/2022
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Translation of the original operating manual
3.7
Safety notes concerning the operation
The following notes and instructions concerning the operation of the freeze-
dryer must be observed in order to protect all persons and property.
3.7.1
Hazards caused by electricity
DANGER
Danger of life caused by electric shock
There is a risk of electric shock when touching current-carrying
components.
This may lead to ventricular fibrillation, cardiac arrest, or respiratory
paralysis.
• Only qualified electritians are authorised to perform work on the
electrical system of the freeze-dryer!
• The electrical equipment of the freeze-dryer must be checked at
regular intervals by a qualified electrician!
• Defects such as loose connections or burnt cables must be eliminated
immediately.
3.7.2
Hazards caused by natural, flammable refrigerants
DANGER
Risk of suffocation caused by the refrigerant
When work is performed on the refrigeration system of the freeze-dryer,
refrigerant may escape in the liquid or gas state and under high pressure.
Gaseous refrigerant is heavier than air and high concentration levels of it
may collect on the floor or in pits.
There is a risk of suffocation in the case of high concentration levels.
Possible symptoms are paralysis and unconsciousness. Affected persons
do not notice the fact that they suffocate.
• Only qualified persons are authorised to perform work on the
refrigeration system of the freeze-dryer!
• Ensure good aeration/extraction when working on the refrigeration
system!
WARNING
Risk of cold burns or frostbite caused by the refrigerant
When work is performed on the refrigeration system of the freeze-dryer,
refrigerant may escape in the liquid or gas state and under high pressure.
In the case of skin contact with liquid refrigerant, cold burns or frostbite
may result.
• Only qualified persons are authorised to perform work on the
refrigeration system of the freeze-dryer!
DANGER
Risk of explosion due to refrigerants
The refrigerants used are highly flammable and can form an explosive
mixture if their concentration in the ambient air is sufficiently high.
There is an explosion hazard.
• Work on the refrigeration system of the freeze-dryer must only be
carried out by qualified specialist personnel who have been trained to
handle flammable refrigerants!
• Ensure good ventilation and make sure that no ignition sources (e.g.
soldering iron, welding equipment) are present!