Freeze-dryer Epsilon 1-4 LSCplus
Freeze-dryer Epsilon 2-4 LSCplus
8 Maintenance and service
Version 07/2022, Rev. 3.0 of 20/07/2022
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Translation of the original operating manual
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8.1.2.2
Door latch
There is a slide pad on the door latch of the loading door. This slide pad is
included in the scope of supply as a spare part (part no. 18189991). It must
be inspected regularly for signs of wear. When its thickness is < 0.5 mm, it
must be replaced.
1
Door latch
2
Slide pad
3
Torx screws
Fig. 76: Door latch and slide pad
Replacing the slide pad:
Unscrew the two screws of the slide pad with a Torx
®
TX10 screwdriver,
remove the old slide pad, and install the new one.
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8.1.3
Aeration valve
Contaminants such as product residues may lead to an insufficient vacuum.
In this case, the aeration valve must be cleaned.
• Switch the freeze-dryer off and disconnect the mains plug.
• Remove the valve core.
• Clean the valve core and the opening with a moist cloth.
• Clean the O-rings and inspect them for any damage. Damaged O-rings
must be replaced.
1
Valve opening
2
Valve core
3
O-rings
Fig. 77: Valve opening and valve core with O-rings (example)
• If necesssary, grease the valve core with a thin layer of high-vacuum
grease and (part no. 126210) reinsert the valve core.
• Put the freeze-dryer into operation again.
If the vacuum is still insufficient, the freeze-dryer must be checked by
qualified specialist personnel (see chapter 7.3 - "Service contact").
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