17. Troubleshooting
Problem Possible cause Corrective action
Tip dripping
(instrument leaks)
- Unsuitable tip - Only use high-quality tips
- Tip not seated tightly - Press tip on firmly
The instrument does not aspi-
rate or aspirates too little; the
discharged volume is too low
- Seal contaminated - Clean seal
- The seal or cone is damaged - Replace seal or shaft
- The piston is contaminated or
damaged
- Clean or replace piston
Aspiration is too slow - Shaft clogged - Clean shaft
- The filter in the 5 ml and 10
ml models is contaminated
- Change the filter
Discharged volume is too large - Pipetting button pressed too
far into the blow-out position
before sample uptake
- Operate properly.
See ‚Pipetting‘, page 25.
Piston is difficult to move - The piston is contaminated or
needs oil
- Clean and oil piston
36
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