Technical data

7.6. Exhaust filter
If the unit is equipped with an exhaust filter (necessary if the
exhaust gases cannot be extracted into the open air or into a
vent), take care that the condensate in the filter does not rise too
high. The condensate is drained using a waste oil drain screw at
the filter.
(Please refer to the separate operating manual!)
7.7. Cleaning
7.7.1. Cleaning the freeze dryer
Use soap water or other water-soluble, mild cleaning agents to
clean the freeze dryer. Avoid corrosive and aggressive
substances. Do not use alkaline solutions or solvents or agents
with abrasive particles. Remove product residues from the ice
condenser chamber using a cloth. It is recommended to open the
lid of the freeze dryer or of the drying chamber when the freeze
dryer is not in use so that moisture can evaporate.
If there is the risk of toxic, radioactive or pathogenic
contamination, special safety measures must be considered
and adhered to.
7.7.2. Cleaning the accessories
When cleaning accessories, special safety measures must be
taken as these are measures to ensure operational safety and
reliability.
Chemical reactions as well as stress corrosion (combination of
changing pressure and chemical reaction) can affect or destroy the
structure of metals and plastic parts. Hardly detectable cracks on
the surface will expand and weaken the material without any
visible signs. When a visible damage of the surface, a crack, a
mark or any other change, also corrosion, is detected, the part
(shelf, vessel, drying chamber etc.) must be replaced immediately
for safety reasons.
Fans, lid seals, vessels, racks, drying chambers 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.
84 • Maintenance Operating Manual Freeze Dryer ALPHA 1-4 LSC / ALPHA 2-4 LSC