Technical data

If there is the risk of toxic, radioactive or pathogenic
contamination, special safety measures must be considered
and adhered to.
Aluminium accessories are particularly prone to corrosion. A
neutral cleaning agent with a pH-value between 6 and 8 should be
used for such parts. Alkaline cleaning agents (pH > 8) must be
avoided. This increases the service life and considerably reduces
the susceptibility to corrosion.
Careful maintenance by the user increases the service life and
prevents premature failure of accessories. Damage caused by
insufficient care does not constitute a warranty claim.
7.7.3. Maintenance of the aeration valve and the drain valve
Special attention must be paid to the aeration valve and the drain
valve. If residues from previous drying processes deposit on them,
the freeze dryer may malfunction. Therefore, take care that no
product or other residues will get into the pipe to the aeration valve
and to the drain valve.
7.7.4. Disinfecting the drying chamber, the lid and the
accessories
All usual disinfectants like, for example, INCIDUR, Melisiptol,
Sagrotan, Buraton or Terralin (available through your local
laboratory supplier) can be used.
ATTENTION! Check compatibility with the lid and the drying
chamber. See also the enclosure “Chemical behavior of
PLEXIGLAS® (acrylic glass)”.
The freeze dryers and the accessories are made of different
materials. A possible incompatibility must be considered. For
autoclaving, the temperature stability of the individual materials
must be taken into consideration. Please consult us if in doubt. If
dangerous materials are used, the freeze dryer and the
accessories must be disinfected.
Operating Manual Freeze Dryer ALPHA 1-4 LSC / ALPHA 2-4 LSC Maintenance • 85