Maintaining
88
5
Figure 5-12 Ion Block Rear View
Note:
Do not damage the ion block surface and insulator O-ring.
20. Grasp the extraction cone pin with the needle-nose pliers. Lift the extraction cone
from the ion block.
21. Insert a suitable nonmetallic implement under the inner edge of the polymeric seal
ring to pry the seal ring and O-ring out of the ion block.
Note:
Avoid damaging the seal and O-ring on the ion block.
22. Remove the D-shaped O-ring from the front of the ion block.
Cleaning the Source Components
1.
Place the ion block in a beaker with methanol : water (1:1).
2.
Place the beaker containing the ion block and methanol/water mixture in an
ultrasonic bath for 20 minutes.
3.
Remove the ion block from the methanol/water mixture, and place it in a beaker
containing 100% methanol.
4.
Place the sample cone, cone gas nozzle, and extraction cone in a beaker containing
methanol : water (1:1). If debris have accumulated at the sample cone orifice, place
a drop of formic acid on the orifice before placing it in the beaker.
Note:
If the parts are obviously fouled, use a mixture of 45% methanol, 45% water,
and 10% formic acid.
Hold-Down Screw
Extraction Cone
Extraction
Retainer (PEEK)
Summary of Contents for Micromass ZQ 2000
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