Insufficient Vacuum; Small Flange Connections - Christ Alpha 3-4 LSCbasic Operating Manual

Freeze-dryer

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7.1.2

Insufficient vacuum

NOTE

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7.1.2.1

Version 11/2018, Rev. 1.2 of 05/03/2019 • sb-pe

Translation of the original operating manuel

The vacuum checks must be carried out when the ice condenser is frozen.

Leakages are often due to improper small flange connections between the

various components and hose connections or to leakages in the valves.

•

Loosen the connection and place the centring ring (with sealing ring

inside) in a centred manner between the flange connections.

•

Seal the connection with the clamping ring by tightening the wing nut.

•

Ensure that the centring ring neither slips out of place nor gets jammed.

Fig. 53: Small flange and centring ring

Fig. 55: Attaching the clamping ring

Freeze-dryer Alpha 3-4 LSCbasic

7 Malfunctions and error correction

Fig. 54: Small flange with centring ring

and small flange

Fig. 56: Tightened clamping ring

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