Section 5: Instrument Maintenance
• Insert the Guide Sleeve into the Pipette Injector.
• Thread on the Threaded Cap, to lock the Guide Sleeve in place.
!
!
Never replace or polish plunger tips without the Guide Sleeve and Threaded Cap in
place.
• Insert the Tip Puller Tool through the center of the Guide Sleeve and over the plunger tip.
• To remove the tip, pull the Tip Puller, collinearly with the pipette screw, out through the
Guide Sleeve. Occasionally, the Tip Puller Tool will fail to successfully grab and remove
the tip. In this case the operator should move the plunger a little bit lower (ca 0.1” - 0.2”) and
try again. The plunger can easily be lowered through the Dn (down) Distance button in the
Pipette Controls group of the ITC Controls window.
Do not apply an angled or perpendicular force to the Tip Puller, as this may bend the
pipette screw and make the pipette unusable.
To replace the tip, leave the Guide Sleeve and Threaded Cap on the Pipette Injector and proceed.
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