Page 38 VK 7025 Dissolution Apparatus Revision H, 11/10
Setup Operator’s Manual P/N 70-9033
Varian, Inc.
Step 3. When lowering the drive unit to run the method, stop the downward
movement two inches above the vessel plate. Align the evaporation
cover with the cannula assembly and the DDM tube at each vessel
position. Lower the drive unit completely. The DDM tube should rest
within the DDM alignment attachment.
Setting the Manual Sampling Cannula
To sample manually from positions 7 and 8, it is necessary to set the manual sampling
cannulas to the correct length.
For positions 7 and 8, complete the following steps:
Step 1. From the System Setup Menu 1 screen, select DIAGNOSTICS. The
Diagnostic Menu screen displays.
Step 2. Select DDM TEST.
Step 3. Position a DDM manual override adapter over the DDM at position 7. Do
not press down on the adapter.
Step 4. Select the corresponding location on the screen and the appropriate
DDM opens. Gentle downward pressure slides the adapter into place.
The adapter prevents the DDM from closing.
Step 5. Press ESC twice to return to the System Setup Menu 1 screen.
Step 6. Attach the cannula (part number 17-3315) to the syringe.
Step 7. Place the manual sampling cannula through the DDM manual override
adapter and into the vessel (see Figure 10, “Manual Sampling through
the Top Cover,” on page 39).
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