Hach-Lange TENSETTE plus User Manual - Handbuch (Seite 35)

35
Section 7 Troubleshooting
The table below lists possible problems and their solutions.
Problem Likely Cause Action
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 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 instructions
carefully
Tip incorrectly attached Attach firmly
Calibration altered:
caused by misuse, for
example
Recalibrate according to
instructions
Inaccurate
dispensing with
certain liquids
Unsuitable calibration
High viscosity liquids may
require recalibration
Recalibrate with the
liquids in question
No dispensing
Pistons stuck or not
connected
Remove tip cone module.
Move piston by hand or
with piston removal tool.
Attach the module in
service mode.