38
Rotavapor
R-220 EX
6 Maintenance
• Take out the seal
laid in at the front and replace it.
6.7 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.
6.8 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. 6.7: Replacement of the Vacuum Seal 1
Fig. 6.8: Replacement of the Vacuum Seal 2
