Waters 1500-Series, Operator'S Manual

Page: 74 / 188

3-24 Installing Options and Accessories
16. From the back side of the head support, slide the plunger indicator rod
through the hole in the head support.
17. Lubricate the plunger rod and seals with methanol.
18. Align the head support on the pump housing face.
The back side of the head support must contact the pump housing face.
When viewed from the front of the pump, the indicator rod must be
oriented to the upper right of the head support.
19. Insert the four 9/64-inch hex screws, and alternately tighten them with
a T-handle wrench.
20. Ensure the indicator rod slides freely.
21. Lubricate the pump head seal with methanol.
22. Align the pump head carefully over the plunger and indicator rod, and
then slide the head onto the head support.
23. Insert the two 5/32-inch hex screws, and alternately tighten them with a
T-handle wrench.
24. Ensure the gap between the pump head and the head support is
uniformly spaced all around.
25. Pull out and release the indicator rod:
• If the rod does not snap back easily, the head is misaligned. Loosen
the pump head, and then repeat step 21 through step 23 , above.
• If the rod snaps back easily, continue with step 25 , below.
26. Reconnect the inlet and outlet tubing assemblies to the pump head.
Tip:
Use the 1/2-inch open-end wrench to hold the check valve housings
in place while tightening the tubings with the 5/16-inch open-end
wrench.
27. Repeat the process for the remaining pump head supports, and then
complete the steps in page 3-29 .
Caution:
To avoid damaging the support head, support it securely
at all times while installing and tightening the screws.