Revision H, 11/10 VK 7025 Dissolution Apparatus Page 99
P/N 70-9033 Operator’s Manual Maintenance and Troubleshooting
Varian, Inc.
• It is recommended that the water bath temperature probe jack is checked for
surface corrosion and wiped clean with a soft cloth or nonabrasive pad every one
to three months.
Paddle / Basket Shaft Care
1. When using with corrosive materials such as hydrochloric acid or media containing
salts, be sure to rinse them thoroughly with deionized water immediately after each
use, and dry thoroughly with a soft towel or cloth.
2. Do not clean with abrasive cleansers or cloths. Use deionized water whenever
possible. If you must use a cleanser or solvent, be sure that it is as mild as possible,
non-abrasive, and fully compatible with fluorocarbons and stainless steel before use.
If in doubt, call the service department for advice before proceeding.
3. We recommend that you do not use a laboratory dishwasher. Clean paddles and
basket shafts only by hand. The high temperatures to which your items would be
subject in a dishwasher may damage the fluorocarbon coating.
4. Be sure to handle with care. Our QC laboratory has checked the shafts for
straightness, to ensure that they will operate without significant wobble. If you must
clean or handle them while they are still mounted on the instrument, use minimal
pressure on the shaft to prevent them from bending. While in the chucks, just a little
bit of pressure exerted on the shaft—especially near the blade or basket—can easily
bend the shaft and cause significant wobble.
5. Use care when removing vessels from the apparatus while the paddles or basket
shafts are installed so that you do not bump them.
6. When attaching or removing baskets, do not bend the clips excessively.
7. Please store paddles and basket shafts properly between uses. Do not simply place
these items in a drawer. They will be subject to nicks, chips, and scratches as they
Note
Depending on the frequency of use, it may be necessary to
complete this maintenance procedure more often.
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