Martin Christ Alpha 1-2 LDplus User Manual

Page 57

Freeze-dryer Alpha 1-2 LDplus

8 Maintenance and service

Version 11/2006, Rev. 2.0 of 02/12/2014 • sb

Translation of the original operating manual

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8.1.1.1 Ice condenser chamber

Before each start-up, ensure that the ice condenser chamber is free from
water residues.
• Open the media drain valve to drain off any liquid. Then, close the

valve.

• If necessary, wipe the ice condenser chamber dry with a cloth.

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8.1.1.2 Drying chamber

Some drying chambers are equipped with the LYO CHAMBER GUARD
splinter protection film.
• In order to prevent the film from being damaged, only use water and

commercially available window cleaning agents as well as synthetic
sponges, soft tissues or a rubber wiper for cleaning.

• Do not dry-clean any drying chambers that are equipped with LYO

CHAMBER GUARD film!

Fig. 45: Identification label on a drying chamber with a splinter protection film

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8.1.1.3 Aeration valve, media drain valve

Contaminants such as product residues may lead to an insufficient vacuum.
In this case, the aeration valve and the media drain valve must be cleaned.
• Switch the freeze-dryer off and disconnect the mains plug.
• Remove the valve core.
• Clean the valve core and the opening with a moist cloth.
• Clean the O-rings and inspect them for any damage. Damaged O-rings

must be replaced.

Valve opening

Valve core

O-rings

Fig. 46: Valve opening and valve core with O-rings

(example, varies depending of the type of freeze-dryer)