Freeze-dryer Alpha 3-4 LSCbasic
5 Set-up and connection
Version 11/2018, Rev. 1.9 of 01/12/2021
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Translation of the original operating manuel
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.
Freeze-dryers with a dry-running vacuum pump require a silencer with 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.
•
Die Leit ung muss s o v erlegt s ein, dass k ein Kondens at in di e Pum pe z urückl aufen k ann. Bei steig enden Leit ungen em pf ehl en wir di e Verw endung eines Absc hei ders (Woul ff'sche Flasc he oder Waschflas che).
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5.8
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
Connection to the
vacuum pump
Fig. 14: Installation of the pressure control valve
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