Freeze-dryer Epsilon 2-10D LSCplus
7 Malfunctions and error correction
Version 07/2022, Rev. 3.0 of 20/07/2022
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Translation of the original operating manual
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7.1.2.2
Aeration valve, media drain valve
WARNING
Risk of poisoning/infection caused by contaminated condensate
(defrosting water)
The condensate may contain harmful substances originating from the
product.
Contact with the condensate may cause severe damage to health.
• Wear suitable protective clothes, gloves, and respiratory protection
when maintaining the drain system (especially when cleaning the
valves and when replacing the seals)!
A malfunction of the aeration valve or the media drain valve may have
several causes. One potential source are contaminants such as product
residues within the valve.
• Switch the freeze-dryer off and disconnect the mains plug.
• Clean the valve (see chapter 8.1.4 - "Aeration valve, media drain
• Put the freeze-dryer into operation again.
If there is still a leakage, the freeze-dryer must be checked by qualified
specialist personnel (see chapter 7.3 - "Service contact").
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7.1.2.3
Pressure control valve
A malfunction of the pressure control valve may have several causes.
NOTE
The inspection of the valve must be carried out by qualified specialist
personnel (see chapter 7.3 - "Service contact").
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7.1.2.4
Vacuum sensor
Vacuum sensors have a limited service life and can be ordered as spare
parts.
Capacitive vacuum sensors
Capacitive vacuum sensors may experience a measurement drift due to
long-term use, soiling or sudden aeration. In this case, the vacuum sensor
must be adjusted (see chapter 8.1.12 - " Vacuum sensor ").