BUCHI Extraction Unit E-816 SOX - Manual (Page 44)

7 Maintenance and repairs
44 E-812/816 Soxhlet Operation Manual, Version B
7 .2 Weekly maintenance
7 .2 .1 Heating elements
The ceramic heating plates should be cleaned regularly after they have cooled down. Remove dirt
adhering to the plate with e.g. ethanol. Then clean the plate with a moist cloth and dry it.
7 .3 Monthly maintenance
7 .3 .1 Cleaning the seals
NOTE
When replacing the seals, take care not to damage them. To avoid damaging the seals, never apply
grease and never touch them with sharp objects.
To prolong the lifetime of the seals, rinse them regularly with distilled water. Afterwards, dry them with
a soft cloth.
7 .3 .2 Replacing the seals
Seals are subject to wear and tear, thus you should check them regularly and replace them, if neces-
sary.
To replace the seals on the extraction chambers, proceed as follows:
• Remove the protective shield.
• Slide the rack forward, so that you have free access to the extraction chambers.
• Remove the extraction chamber for which you want to replace the seal.
• Now proceed as shown in the figures below:
Fig. 7.2: Replacing the seals on the extraction chambers
• Now refix the extraction chamber, slide back the rack and remount the protective shield.
To replace the seals on the beakers, proceed as shown in the figures belows: