LI-COR LI-600 - Page 90

Section 8. Maintenance
8-11
Figure 8-10. Filter part number 301-19838 is a direct replace-
ment for the original filter (part number 301-16918).
4 Remove the pump cover and pump.
Remove the four screws on the pump cover then
remove it. Using gloves, remove the pump to gain
access to the H
2
O buffer material.
Handle the black plastic corners only.
5 Remove the H
2
O buffer material.
Use gloves or tweezers to remove the H
2
O buffer
material, as oils on the skin and scratches can reduce
its buffering efficacy.
Alternatively, turn the LI-600 over a container to col-
lect the H
2
O buffer material.