Revision H, 11/10 VK 7025 Dissolution Apparatus Page 31
P/N 70-9033 Operator’s Manual Setup
Varian, Inc.
Step 6. Place a shaft locking ring on the top of the shaft and slide it down until it
rests on the shaft collar.
Step 7. Rotate the shaft locking ring so the drive positioning teeth on both the
shaft locking ring and the shaft collar rest against one another, locking
the shaft in place.
Step 8. Tighten the set screw using the 7/64-inch T-handle Allen wrench
provided.
Step 9. Raise the drive unit to its home position. Remove the height gauge from
the basket shaft.
Step 10. Repeat steps 3 - 9 for each of the remaining positions.
Step 11. The basket shafts are set at the appropriate height so when the baskets
are installed and the drive unit lowered they are at the USP-specified
height of 25 ± 2 mm above the bottom of the vessel.
Installing Rotating Cylinders
Step 1. Raise the drive unit to its home position.
Step 2. Carefully insert a rotating cylinder shaft into the spindle until
approximately half of the shaft is above the top of the spindle.
Note
If using rotating cylinders, it is easier to install the evaporation
covers prior to installing the rotating cylinders. See “Installing
Standard Evaporation Covers” on page 36 or “Installing Basket /
Low-loss Evaporation Covers” on page 37 as appropriate for the
type of evaporation covers included with your system.
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