Hach-Lange DR 3800 User Manual - Manual (Page 127)

127
Maintenance
8. Remove the old filter pad ( Figure 11 , item 3 ) and replace it with
a new one.
9. Screw the grid back in place.
10. Carefully stand the instrument upright.
11. Plug the instrument in.
Figure 11 Base of DR 3800 with filter grid
1 Filter grid 3 Filter pad
2 Phillips screw