Martin Christ Beta 2-8 LDplus - Manual (Page 62)

62 Maintenance and Service Operating Manual Freeze Dryer BETA 1-8 LDplus / BETA 2-8 LDplus
7.1.5. Vacuum Pump
For maintenance of the vacuum pump please refer to the separate
operating manual.
Additionally, we would like to emphasise the following points:
The oil level of the vacuum pump must be regularly checked using
the inspection glass (in case of continuous operation at least once
a week). Top up oil to the required level via the oil inlet. For
topping-up see the operating manual of the pump.
The first oil change must be carried out after approx. 100 operating
hours. Subsequent oil change intervals depend on the operating
conditions. In general, an oil change is necessary after approx.
500 to 1000 operating hours.
The oil change should always be carried out with warm pump.
7.1.6. 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 separate operating manual!)
7.1.7. Cleaning
7.1.7.1. Cleaning of the Freeze-dryer
Use soap water or other water-soluble, mild agents for cleaning of
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 that the lid to the
freeze-dryer or drying chamber is left open 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.
7.1.7.2. Cleaning of Accessories
When looking after accessories special safety measures must be
considered as these are measures to ensure operational safety
and reliability.
Chemical reactions as well as stress corrosion cracking
(combination of changing pressure and chemical reaction) can
affect or destroy the structure of the metals and plastic parts.
Hardly detectable cracks on the surface expand and weaken the
material without visible signs. When visible damage of the surface,
a crack, a mark or any other change, as well as corrosion is
detected, the part in question (shelf, vessel, drying chamber etc.)
must be replaced immediately for safety reasons.