Martin Christ Beta 2-8 LDplus - Manual (Page 63)

Operating Manual Freeze Dryer BETA 1-8 LDplus / BETA 2-8 LDplus Maintenance and Service 63
Fans, lid seal, vessels, racks, drying chamber and shelves must
be cleaned regularly in order to avoid damage.
Cleaning of accessories should be carried out away from the
freeze-dryer once a week or preferably after every use.
If there is the risk of toxic, radioactive or
pathogenic contamination, special safety
measures must be considered and adhered to.
Aluminium accessories are particularly subject to corrosion. A
neutral agent with a pH-value between 6 and 8 should be used for
such parts. Alkaline agents (pH > 8) must be avoided. Thus life
time is increased and corrosion is reduced considerably.
Careful maintenance through the user increases life time and
avoids premature failure of accessories. Damage caused by
insufficient care does not constitute a warranty claim.
7.1.7.3. Maintenance of the Drying Chamber
The drying chamber is 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 no use any scouring agents, hard sponges, rough tissues, or
brushes!
Do not dry-clean any drying chambers that are equipped with LYO
CHAMBER GUARD film!
7.1.7.4. 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,
there is the risk of faulty operation of the freeze-dryer. Therefore,
take care that no product or other residues will get into the pipe to
the aeration valve and the drain valve.
7.1.8. 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 “Resistance to stress cracking and chemical influences
PLEXIGLAS " (acrylic glass).
The freeze-dryers and the accessories consist of different
materials. A possible incompatibility must be considered. The
compability of the outer protective layer of the LYO CHAMBER
GUARD film has not been field-tested yet. Therefore, we cannot
guarantee a compability of 100% with disinfectants.
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.