Instruction Manual | 17
Problem
Cause
Solution
The pipettor
incorrectly
aspirates
the liquid or
liquid drops
out from the
pipet tip.
Damage to the
piston or seal due
to prolonged use
with chemically
aggressive liquids.
Replace the piston, seal,
and O-ring. Rinse the inside
of the shaft in distilled
water and dry. Lubricate the
seal and O-ring with the
lubricant which has been
included with each pipettor.
The replacement of the
piston requires conducting
the calibration procedure.
NOTE:
The parts of the
single-channel (2 μL and
10 μL) pipettors should
be lubricated evenly with
a minimum amount of
lubricant.
The pipettor is
reassembled
improperly.
Disassemble the pipettor
and reassemble it, observing
the proper sequence of
steps.
No lubricant on the
sealing elements.
Remove the tip ejector.
Unscrew the shaft nut and
remove the shaft, piston
assembly, seal, and O-ring.
Rinse the removed parts
in distilled water and dry
thoroughly. Lightly lubricate
the inside surfaces of the
seal and the O-ring with
the included lubricant.
Reassemble the pipettor in
the reverse order.
Contamination of
the inside of the
pipettor caused by
extensive aspiration
of chemically
aggressive liquids or
because liquid got
inside the pipettor.
Contamination of the inside
of the pipettor caused
by extensive aspiration
of chemically aggressive
liquids or because liquid got
inside the pipettor.
If the problem continues after carrying out the above
steps, contact your Corning representative.
Before returning the pipettor, please ensure the pipettor
is completely free of any chemical, radioactive, or
microbiological contamination which could pose a threat
during transport and repair.
