Teledyne ACCQPrep HP125, Installation And Operation Manual

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ACCQPrep HP125
Section 6 Maintenance
6-25
systems have an internal valve that allows removal of the cap-
illary inlet without venting the vacuum system to allow easy
cleaning. Even with the easy cleaning capability, Teledyne Isco
recommends keeping a spare capillary inlet cone assembly
(Teledyne ISCO part number 25-0000-085) to allow rapid
replacement to minimize downtime while cleaning the plugged
capillary.
6.8.9 Capillary Inlet Cone
Removal
1. Set the PurIon to standby.
2. Wait ~ 15 minutes for the cone to cool.
3. Remove the ion source assembly, section 6.8.3.
4. Wearing gloves (typical lab gloves are usually sufficient),
place your fingers on the top surface of the cone and turn
counterclockwise to unscrew the capillary inlet cone. Many
times this is sufficient to remove the capillary. f you are
unable to unscrew the part manually, use an adjustable
wrench on the flats of the cone to unscrew. The flats are not
large and may be difficult to see and keep a wrench seated
on the flats.
5. Remove the O rings from the capillary inlet cone.
6.8.10 Capillary Inlet Cone
Cleaning
1. Remove the o-ring under the capillary base, then sonicate
the capillary in a methonal:water (50:50) mixture for
30minutes (Figure 6-25).
Figure 6-36 Location of O-Ring
2. If heavily contaminated, sonicate in methanol:water + 1%
formic acid (50:50) mixture for an hour.
3. Rinse the capillary thoroughly with acetone, isopropanol,
methanol then dry the capillary using nitrogen air.