Troubleshooting - Biohit Proline Mode D'emploi

10. Troubleshooting

Trouble
Droplets left
inside the tip
Leakage or
pipetted volume
too small
Push button
jammed or
moves erratically
Pipettor blocked,
aspirated volume
too small
Tip ejector
jammed or
moves
erratically
(*) Clean with Biohit Proline Biocontrol or 75% ethanol.
Possible cause
Unsuitable tip
Non-uniform wetting
of the tip plastic
Tip incorrectly attached
Unsuitable tip
Foreign particles
between tip and tip
cone
Instrument
contaminated
Insufficient amount of
grease on piston and
O-ring
O-ring not correctly
positioned or damaged
Incorrect operation
Calibration altered or
unsuitable for the liquid
Instrument damaged
Piston contaminated
Penetration of solvent
vapours
Liquid has penetrated
tip cone and dried
Tip cone and/or ejector
collar contaminated
14
Solution
Use original Biohit tips
Attach new tip
Attach firmly
Use original Biohit tips
Clean the tip cone,
attach new tip
Clean and grease
O-ring and piston,
clean the tip cone (*)
Grease accordingly
Change the O-ring
Follow instructions
carefully
Recalibrate according
to instructions
Send for service
Clean and grease
O-ring and piston,
clean the tip cone (*)
Clean and grease
O-ring and piston,
clean the tip cone (*)
Clean and grease
O-ring and piston,
clean the tip cone (*)
Clean the tip cone and
the ejector collar (*)