Trainee Guide TR-L2-M2000
Level 2 Maintenance Training – M2000 Dispensing Systems 3-2-38 P/N 73-0018-00 (Revision B)
Exercise Sheet 3-6-8
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.
 CAUTION! Do not run the drill bit all the way through the needle, as this will
increase the size of the needle opening.
7. Once you have removed most of the material with the drill bit, try again to push the
tungsten wire through the needle.
8. 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.
9. NOTE: If great care is taken to maintain the needle it should last indefinitely.
10. 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.
11. If necessary, use the small bottle brush to remove any residual fluid. Rotating the bottle
brush counter-clockwise while slowly inserting it into the needle will pull any residual fluid
out of the needle.
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