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8 Maintenance and service
The freeze-dryer and the accessories are subject to high mechanical and
chemical stress. Thorough maintenance performed by the user extends the
service life and prevents premature failure.
If corrosion or other damage occurs due to improper care, the
manufacturer cannot be held liable or subject to any warranty claims.
• Thoroughly clean the freeze-dryer immediately after use to prevent or at
least significantly reduce the damage to the materials of construction
(see also chapter 1.2 - "Intended use", section "Freeze-drying of
solvent-containing products").
• Use soap water or other water-soluble, mild cleaning agents for
cleaning the freeze-dryer and the accessories.
• Do not use corrosive and aggressive substances.
• Do not use solvents.
• Do not use agents with abrasive particles.
• Do not expose the freeze-dryer or its accessories to intensive
UV radiation (e.g. sunlight) or thermal stress (e.g. by heat generators).
• Do not turn the unit upside down in order to clean it.
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8.1 Maintenance
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8.1.1 General
The general state of the freeze-dryer must be checked at regular intervals.
Any defects must be eliminated immediately! The following points are of
particular importance:
• dirt
• leaks
• corrosion
• bent system components
• loose screw and flange connections
• higher noise levels
• loose cables
• open cable ducts
• missing or illegible safety notes and hazard warnings
• missing or illegible inscriptions on components, pipes (direction of flow)
and cables
• etc.
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