Martin Christ Alpha 1-2 LDplus - Manual (Page 33)

Freeze-dryer Alpha 1-2 LDplus
5 Set-up and connection
Version 11/2006, Rev. 2.0 of 02/12/2014 • sb
33
Translation of the original operating manual
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5.3 Aeration and media drain valve
The aeration and media drain valve is located on the left side of the unit.
After the end of a freeze-drying process, the unit will be aerated via the
aeration valve.
Additionally, it is used to drain off the condensate and the defrosting water.
• Connect the drain hose (included in the scope of supply) to the hose
connector.
• Place a collecting vessel under the unit.
The hose must be laid with a continuous slope and the end of the hose
must always be above the liquid level in the collecting vessel. This prevents
water and dirt residues from being sucked into the ice condenser chamber
if there is negative pressure when the media drain valve is opened.
(see chapter 2.1.1 - "Functional and operating elements")
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5.4 Vacuum sensor
NOTE
Please refer to the separate operating manual of the vacuum sensor!
In order to protect the vacuum sensor against transport damage, it comes
supplied in its original packaging. Prior to commissioning the freeze-dryer,
the sensor must be installed.
1
Vacuum sensor
2 Clamping rings
3 Connection socket
Fig. 13: Position of the vacuum sensor and the connection socket
• Switch the unit off by actuating the mains power switch.
• Take the vacuum sensor out of its original packaging and fasten it to the
connector with a bow-shaped connecting piece, two clamping rings
(DIN16KF) and two centring rings (included in the scope of supply).
• Plug the connector to the connection socket and hand-tighten the
screws on the connector.