Trouble Shooting - Thermo Scientific Finnpipette F2 Guide D'utilisation

Service Instructions for Multichannel Pipette Tip Cones
To ensure even performance between all channels in a multichannel pipette, all tip cones have
to be changed at the same time, if any of them needs to be changed. Don't mix tip cones of
different packages, because one bag contains a matched set of tip cones. Place aligning studs
to the same side when assembling the module. See picture on page 71.
Sterilization
The entire pipette can be sterilized by autoclaving it at 121°C (252°F) (2 ata) for a minimum of
20 minutes. No special preparations are needed for autoclaving. You can use steam sterilization
bags, if necessary.
After autoclaving, the pipette must be cooled to room temperature for at least two hours. Before
pipetting, make sure that the pipette is dry. We recommend that you check the calibration after
each sterilization cycle to achieve the best possible accuracy.
The table below lists possible problems and their solutions.
Defect Possible reason
Leakage Tip incorrectly attached
Foreign particlesbetween tip and
tip cone
Foreign particles between the
piston, the O-ring and the cylinder
Insufficient amount of grease on
cylinder and O-ring
O-ring damaged
Inaccurate
Incorrect operation
dispensing
Tip incorrectly attached
Calibration altered: caused by
misuse, for example
Tip cone (Single channel) or
module (Multichannel) loose
Pipette has been unused for a long period
Piston jammed
Highly volatile solvent is pipetted
repeatedly cleaning the grease
Unsuitable calibration
Inaccurate
High viscosity liquids may require
dispensing with
recalibration
certain liquids
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

14
Solution
Attach firmly.
Clean tip cones attach new tips.
Clean and grease O-ring and
cylinder.
Grease accordingly.
Change the O-ring.
Follow instructions carefully.
Attach firmly.
Recalibrate according to
instructions.
Tighten the tip cone or module
with the service tool.
Remove tip if attached. Press
the plunger to the second stop
and release several times to re-
spread the grease.
Recalibrate with the liquids
in question.