SCS LABCOTER 2 - Vacuum Hose; Rotary Feed-Thru Maintenance; Feed-Thru Rebuild

Rev 37 Operator’s Manual OM-610-1002-1
page 40 SECTION 6 MAINTENANCE PDS-2010
6.2.3 Vacuum Hose
Over time, the vacuum hose tubing will acquire a compression set. If the system develops a leak associated
with this tubing, we recommend that the tubing be replaced.
6.2.4 Rotary Feed-Thru Maintenance
Refer to Figure 6-1. This process requires rotary feed-thru maintenance kit SA-285-1118-1.
1. Vent the vacuum from the chamber.
2. REMOVE POWER FROM THE GENERATION UNIT.
3. Remove the fixture hub from the feed-thru shaft inside the chamber.
4. Remove the drive belt and pulley, remove the 4 bolts holding the feed-thru to the chamber, and then
remove the feed-thru.
5. Clean the shaft and the outside of the feed-thru of all accumulated dirt.
Work on a clean surface; do not allow dirt or dust to contaminate clean parts.
6. Remove retainer A from the housing and press the shaft assembly out. DO NOT HAMMER the shaft
out of the housing–this could damage the shaft.
7. Clean the housing, shaft, and spacer with solvent.
8. Liberally coat the shaft and housing bore in the marked A with APIEZON-K vacuum oil.
9. Coat the new O-rings and spacer with APIEZON-K vacuum oil and install in the housing.
10. Press the shaft assembly in the housing and install new retaining ring A.
11. Clean the face and O-ring groove on the feed-thru and install a new O-ring on the feed-thru. Reinstall
parts in the chamber in the reverse order of removal.
6.2.5 Feed-Thru Rebuild
Refer to Figure 6-1. This process requires rotary feed-thru rebuild kit SA-285-1119-1.
1. Vent the chamber vacuum.
2. REMOVE POWER FROM THE GENERATION UNIT.
3. Remove the fixture hub from the feed-thru shaft inside the chamber.
4. Remove the drive belt and pulley, remove the 4 bolts holding the feed-thru to the chamber, and then
remove the feed-thru.
5. Clean the shaft and the outside of the feed-thru of all accumulated dirt.
Work on a clean surface. Do not allow dirt or dust to contaminate clean parts
.
6. Remove retainer A from the housing and press the shaft assembly out. DO NOT HAMMER the shaft
out of the housing–this could damage the shaft.
7. Remove retainer B from the shaft and remove both bearings and spacers.
Figure 6: Feed-Thru