Revision H, 11/10 VK 7025 Dissolution Apparatus Page 37
P/N 70-9033 Operator’s Manual Setup
Varian, Inc.
Installing Basket / Low-loss Evaporation Covers
The evaporation cover for low loss or baskets comes with two DDM alignment
attachments. Both attachments aid the alignment of the evaporation cover on the vessel.
The open alignment attachment allows use of the DDM. The solid alignment attachment
reduces evaporation and blocks use of the DDM.
If using the optional evaporation cover for use with baskets or for low loss, complete the
following steps:
Step 1. Determine which DDM alignment attachment is appropriate for your
system and screw the attachment into the opening in the evaporation
cover (see Figure 9, “Evaporation Cover for Low Loss or Baskets,”
below).
FIGURE 9. Evaporation Cover for Low Loss or Baskets
Step 2. If using paddles or rotating cylinders, remove the apparatus from vessel
position 1. Feed the shaft through the center hole of the evaporation
cover and replace the apparatus following the instructions under
“Installing Paddles” on page 29 or “Installing Rotating Cylinders” on
page 31, as appropriate. Repeat for each vessel position.
If using baskets, place an evaporation cover on the vessel at each
vessel position. Visually align the DDM tube with the DDM alignment
attachment and the cannula assembly with the opening in the
evaporation cover.
open DDM
alignment attachment
solid DDM
alignment attachment
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