Maintenance
DVVA II 4000
9-16
400-42803-01 (Rev B) - July 2017
Replacing and Conditioning the Piston Tip
The piston tip should be replaced when deemed necessary; and must be conditioned before
using.
Replacing the Upper Piston Tip
1. Select
Unit 1 > Return Upper Piston Home
to move the piston to its uppermost position,
completely out of the sample chamber.
2. Slide the sample compartment shield to its uppermost position.
3. Place a stiff piece of paper or cardboard over the top of the sample funnel to prevent the
loosened tip from accidentally falling down into the chamber.
Upper piston
home position
Summary of Contents for DVVA II 4000
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