Trouble Shooting - Thermo Scientific Finnpipette Novus 46200000 Guide D'utilisation

Sterilization
The tip cone module can be sterilized by autoclaving it at 121°C (252°F) (2 ata) for 20 minutes. You
can use steam sterilization bags if needed.
1. Remove the lower tip ejector sleeve 13 by pulling it out (snap fi tting).
2. Push down the ejector button and take the upper ejector top 11 between fi ngers.
3. Release the ejector button to up position, but hold the tip ejector top 11 in down position
with the fi ngers.
4. Remove the tip cone by pulling it out (snap fi tting).
5. Press and hold the trigger down to drive out the piston.
6. Insert the special piston removal tool and pull out the piston 14. The number 2 end is for
300 μl and 1000 μl pistons, the number 1 end for all the smaller volumes. See picture
on page 12. Release the trigger.
7. Remove spring hatch 25 by pressing it down and in the same time turning 90 degrees.
Take out the spring 16.
8. Autoclave all module parts at 121°C (252°F) for 20 minutes.
9. Let the parts cool down to room temperature for at least two hours.
10. With pipettes up to 100 μl reassemble the plate 25 and spring 16.
With pipettes 300 μl and 1000 μl reassemble the spring 16.
11. Attach the module back to the pipette as described in Maintenance section.
After autoclaving the module must be cooled to room temperature for at least two hours. Before
pipetting, make sure that the module is dry. We recommend that you check the calibration after
every sterilization cycle.
The table below lists possible problems and their solutions.
Defect Possible reason
Leakage
Tip incorrectly attached
Foreign particles between tip
and tip cone
Foreign particles between the
piston, the O-ring and the cylinder
Insuffi cient amount of grease
on cylinder and O-ring
O-ring damaged
Incorrect operation
Inaccurate
dispensing
Tip incorrectly attached
Calibration altered: caused
by misuse, for example
Unsuitable calibration
Inaccurate
High viscosity liquids may
dispensing with
require recalibration
certain liquids
Pistons stuck or not connected
No dispensing
CAUTION!
The Finnpipette is designed to allow easy in-lab service. If you would prefer to have us or
your local representative service your pipette, please make sure that the pipette has been
decontaminated before you send it to us.
Please note that the postal authorities in your country may prohibit or restrict the shipment of
contaminated material by mail.

Trouble shooting

15
Solution
Attach fi rmly
Clean tip cones attach new tips
Clean and grease O-ring and cylinder.
Grease accordingly
Change the O-ring
Follow instructions carefully
Attach fi rmly
Recalibrate according to
instructions
Recalibrate with the liquids in question
Remove tip cone module. Move piston
by hand or with piston removal tool.
Attach the module in service mode.