Exploded View Of Pump Body - Agilent Technologies SH-112 Bedienungshandbuch

4. Cut the Tip Seal about 1/8" (3 mm) from the outer
groove end.
5. Use the remaining Tip Seal material to fill the seal
groove on the Scroll Housing and again trim the
excess Tip Seal so that a gap of about 1/8" (3 mm)
remains at the outer end.
6. Place the new main O-ring onto the Frame (item 10).
Make sure the area where the O-ring sits is clean.
7. Carefully replace the Scroll Housing making sure to
line up the Locating Pins. Be sure that the Tip Seal has
not fallen out of its groove.
8. Reinstall (4) M5 bolts (item 4). Torque the (4) M5 bolts
to 4 N-m (40 in-lbs).
1
1. Front Cowling Bolts; M8 (3)
3. Front Cowling
5. Scroll Housing
7. Main O-ring Parker No. 2-168
9. Orbiting Scroll
To test the pump:
1. Run the pump for about 5 seconds. Verify that the
front fan is running.
If you hear loud noises or observe labored operation,
this indicates that the Tip Seal or main O-ring are
possibly out of place.
2. Disassemble and repair as necessary.
The pump is now ready to return to service.
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SH-112 Dry Scroll Vacuum Pump
8
3
Figure 6 Exploded View of Pump Body
9. If a 1/8" NPT solid plug was removed from the gas
ballast port during disassembly, reinstall it. Apply
Loctite pipe thread sealant PTS 567 sparingly to the
threads to ensure a gas tight seal.
10. Place the front cowling in place and replace the M8
bolts.
11. Reinstall the exhaust adapter. Apply Loctite pipe
thread sealant PTS 567 sparingly to the threads to
ensure a gas tight seal.
12. Reconnect the pump to the electrical power mains.
5
7
2
6
4
2. Exhaust Adapter (NW16)
4. Frame Bolts; M5 (4)
6. Tip Seals
8. Locating Pins (2)
10. Frame
Newly installed Tip Seals may require
NOTE
several hours of run time to seat prop-
erly and enable the pump to meet speed
and base pressure specifications.
For the first one to two days after a tip
seal replacement, periodically run the
pump with an open inlet to help
remove debris caused by the seating
process. Typically, two to three times a
day for two minutes each.
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