Reassembly On The Analyzer - ABB PGC2000 Operation And Service Manual

17. Remove the vaporizer chamber from the flange.
18. Slide the seal from the stem using the sample chamber.
19. Withdraw the piston and the piston rod from the sleeve.
20. This will free the seal from the stem.
21. Replace the seals.
22. Inspect the stem for visible imperfections. If imperfections are found, replace the stem.
23. Remove the rear valve seat from the body.
24. Remove the 15 Belleville springs from the body.
25. Inspect the body O-rings for visible imperfections. If imperfections are found, remove the body
O-rings from the body and piston.
26. Unscrew the piston rod from the piston and extract the stem assembly from the piston rod.
27. Inspect the piston rod O-ring for visible imperfections. If imperfections are found, remove the
piston rod O-ring from the piston rod.
28. Unscrew the sleeve from the body.
29. Inspect the sleeve O-ring for visible imperfections. If imperfections are found, remove the
sleeve O-ring from the sleeve.

Reassembly on the Analyzer

In all steps the lubricant used is High Vacuum Grease, ABB part number 006904-1.
1. Clean the seals with acetone and air dry them.
2. Clean the sample chamber with acetone and air dry it.
3. Lightly lubricate the sleeve O-Ring and the sleeve threads, internal threads and bore of the body
with High Vacuum Grease.
4. Install the sleeve O-ring onto the sleeve.
5. Screw the sleeve into the body until the bottom of the sleeve grooves is flush with the ears on
the back of the body.
6. Lightly lubricate the piston rod O-ring and the threads of the piston rod.
7. Install the piston rod O-ring onto the piston rod. Do not allow grease to enter the small hole
through the center of the piston.
8. Insert the stem into the rear of the piston rod.
9. Screw the piston rod into the piston and tighten to 27-30 in-lb. Do not overtighten or bend the
rod or stem! Do not allow grease to contact the stem.
8-6
NOTE
2000-OSM, F1