Training Guide Course No. 196514
Level 2 Maintenance, X-1000 Series Dispensing Systems 3-50 P/N 196515 (Revision A)
Exercise Sheet 3-8-5
Cleaning the DV-7000
Tools and Materials Needed:
 Cleaning solution (MSDS recommended)
 Cotton swabs
 Reamer
1. Use MSDS recommended cleaning solution and a small bottle brush or cotton
swab to thoroughly clean the feed screw, the upper bearing, the seal, the
needle cap, and the inside of the dispensing cartridge. Make sure all fluid and
residue is removed from all surfaces.
2. Use the reamer to clean any residual fluid from the inside of the dispensing
cartridge.
3. If your DV-7000 is configured with the standoff nozzle, perform Steps 4-12 to
clean the precision needle.
4. Flush the large end of the needle with cleaning solvent.
5. Insert the appropriate size tungsten wire into the needle to open a path through
the end of the needle.
6. Do not force the wire through the needle. If there is a hard plug, use the
supplied drill bit to remove the plug by gently rotating the bit by hand, being
careful not to run the bit all the way through the needle.
7. CAUTION! Do not run the drill bit all the way through the needle, as this will
increase the size of the needle opening.
8. Once you have removed most of the material with the drill bit, try again to push
the tungsten wire through the needle.
9. If the wire still does not go through the needle, try again with the drill bit until
you can get the wire all the way through the needle.
10. NOTE: If great care is taken to maintain the needle it should last indefinitely.
11. Once you have cleared a path through the needle, flush the needle with
cleaning solvent until a clear stream of solvent flows from the end of the needle.
12. If necessary, use the small bottlebrush to remove any residual fluid. Rotating
the bottlebrush counter-clockwise while slowly inserting it into the needle will
pull any residual fluid out of the needle.
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