Hach TenSette plus, Basic User Manual

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9.4 Sterilization
W A R N I N G
Burn hazard. Obey safe handling protocols during contact with hot components. Wear
the appropriate protective equipment during maintenance or service activities.
The tip cone module can be sterilized by autoclaving it at 121 °C (250 °F) for 20 minutes. You can
use steam sterilization bags if needed. Disassemble and reassemble the tip cone module. Refer to
Pipette lubrication on page 10.
After autoclaving, the module must be cooled to room temperature for at least two hours. Before
pipetting, make sure that the module is dry. It is recommended to check the calibration after every
sterilization cycle.
Section 10 Troubleshooting
Problem Possible cause Solution
Leakage Tip incorrectly attached Attach firmly
Foreign particles between tip and tip
cone Clean tip cones. Attach new tips.
Foreign particles between the piston,
the O-ring and the cylinder Clean and grease the O-ring and
cylinder.
Insufficient amount of grease on
cylinder and O-ring Grease accordingly
O-ring damaged Change the O-ring.
Inaccurate
dispensing Incorrect operation Follow the instructions carefully.
Tip incorrectly attached Attach firmly
Calibration altered: caused by
misuse, for example Recalibrate according to the
instructions.
Inaccurate
dispensing with
certain liquids Unsuitable calibration. High viscosity
liquids may require recalibration Recalibrate with the liquids in
question.
Not dispensing Pistons stuck or not connected Remove the tip cone module. Move
the piston by hand or with piston
removal tool. Attach the module in
service mode.
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