Freeze-dryer Epsilon 1-4 LSCplus
Freeze-dryer Epsilon 2-4 LSCplus
5 Set-up and connection
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Version 07/2022, Rev. 3.0 of 20/07/2022
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Translation of the original operating manual
The freeze-dryer is equipped with a dry-running vacuum pump. As a result,
the vacuum exhaust gases are completely free from oil particles. However,
small quantities of debris from worn seals may be emitted. That is why,
even when working with non-harmful substances, the exhaust gases must
either be led to the outside through the roof via a pipe that is properly
connected to the outlet of the vacuum pump, or they must be filtered by
way of a silencer with integrated filter elements that is connected to the
outlet of the vacuum pump.
This freeze-dryer uses a silencer with integrated filter elements . The
silencer is removed for transport and must be installed prior to
commissioning the freeze-dryer:
• Switch the freeze-dryer off.
• Clean the vacuum connector of the freeze-dryer with a cloth.
• Fasten the silencer to the vacuum connector by way of the supplied
centring ring and clamping ring.
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5.2.4
Pressure control valve
The pressure control valve is integrated in the suction pipe between the
vacuum pump and ice condenser chamber. During certain, specified
process phases, it interrupts the volume flow to the vacuum pump (see
chapter 2.2.1 - "General information on freeze-drying").
CAUTION
Observe the installation direction of the pressure control valve!
1
Pressure control
valve
2
Vacuum pump
connection
Fig. 14: Installation of the pressure control valve (example illustration)
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