Maintaining
96
5
Procedure
1.
Remove the ESI probe from the source.
2.
Unscrew and remove the probe tip with the 6-mm hex wrench.
3.
Install the new probe tip, and screw down until 0.5 mm of the capillary protrudes
from the end. Use the Startup Kit loupe to ascertain the capillary position.
5.3.4 Replacing the APCI Fused Silica Capillary and Filter Pad
Replace the fused silica capillary, and/or filter pad, when signal intensity decreases and
backpressure increases.
Required Materials
•
1.5-mm hex wrench
•
5/16-in. open-end wrench
•
7/16-in. open-end wrenches (2)
•
Ceramic capillary cutter (part number WAT250324 in the Tools Kit)
•
Butane lighter or match
•
HPLC-grade methanol
•
Slotted screwdriver
•
Lint-free paper towels
•
Loupe
Spare Parts
•
Two GVF004 ferrules (part number 700000344, reference number 6070737)
•
Fused silica (part number 430000109)
•
Filter pad (part number 600000103)
Procedure
1.
Slide the probe tip and heater assembly off the probe.
2.
Remove the two screws from the probe’s end-cover with the slotted screwdriver.
3.
Loosen the two set screws that hold the LC filter, and remove the probe end with the
hex wrench.
4.
Use the two 7/16-inch wrenches to unscrew the filter from the coupling. Then
remove the ferrule from inside the filter.
5.
Use the two 7/16-inch wrenches, to unscrew the two halves of the filter cartridge
and replace the filter pad. Reconnect the two filter cartridge halves.
6.
Remove the old filter pad and replace it with a new one.
Summary of Contents for Micromass ZQ 2000
Page 6: ......
