Operating Manual Freeze Dryer ALPHA 1-2 LDplus Maintenance • 59
take care that no product or other residues will get into the pipe to
the aeration valve and the drain valve.
7.7.4. Disinfection of Drying Chamber, Lid and Accessories
All usual disinfectants like e. g. INCIDUR, Melisiptol, Sagrotan,
Buraton or Terralin (available at laboratory retail suppliers) can be
used.
NOTE! Check compatibility with lid and drying chamber; also see
enclosure “Chemical behaviour PLEXIGLAS® (acrylic glass).
The freeze dryers and the accessories consist of different
materials. A possible incompatibility must be considered. For
autoclaving the temperature stability of the individual material must
be checked. Please consult us if in doubt.
If dangerous materials
are used, the freeze dryer and the accessories must be
disinfected.
7.7.5. Checks by Operator
The operator has to ensure that the important parts of the freeze
dryer relevant for safety are not damaged.
This especially refers to:
• Lid or drying chamber
• Seals
• Oil level of vacuum pump
• Accessories, especially changes like corrosion, wear
and tear of material etc.
Furthermore, an earth conductor check must be carried out
regularly.
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