26
BÜCHI
Rotavapor
R-220
6 Maintenance
6.6
Replacement of the Vacuum Seal
•
Remove the DN70 EasyClamp completely and take off
the distribution head.
•
Pull the cylindrical seal holder out and turn it over.
•
Insert Tool No. 20075 into the metal guide on the seal and
pull the seal out.
•
Put in the new seal with the dark scraper ring facing the
inside and the metal guide ring facing outward.
•
Insert the cylinder with the seal at the back lying on the in-
side.
•
Insert the seal at the front.
•
Provisionally install the EasyClamp using 2 bolts.
•
Set the distribution head of the glass assembly on top of
the seal.
•
Close the segments of the EasyClamp. Flip the top bolt up
and in, and hand-tighten all 3 knurled nuts.
Tip:
When the glass assembly "R" is in place, the vacuum seal
can be taken out and/or cleaned without the glass assembly
having to be removed.
•
Remove the complete DN70 EasyClamp assembly from
the distribution head.
•
Using a socket wrench, release the fastening for the sup-
port rod.
•
Carefully turn the glass assembly out around the support
rod as an axis.
•
Remove the seal.
6.7
Cleaning
Use commercially available cleaning agents to clean the glass-
ware.
Merely wipe the housing off with a damp cloth (without using
any organic solvents).
Use a commercially available de-liming agent to dissolve resi-
dues of lime in the bath and flush the bath out well.
Fig. 30: Replacement of the Vacuum Seal 1
Fig. 31: Replacement of the Vacuum Seal 2
Содержание Rotavapor R-220
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