Spare Parts - VWR Ultra High-Performance VE2 Handbuch

Problem Cause
The liquid is
dispensed too fast
Droplets of liquid
remain
The tip wettability
in the pipettor tip
has increased due
to extensive use
The pipettor tip
immersion is too
shallow
Air bubbles appear
The pipettor tip
in the liquid
is incorrectly
aspirated into
pressed onto
the tip
the pipettor shaft
The tip is damaged
or worn out due to
extensive use
The pipettor tip
is incorrectly
The pipettor
pressed onto the
incorrectly aspirates
pipettor shaft
the liquid or the
The shaft surface
liquid drops out
is damaged
from the tip
or contaminated
at the sealing site
The plunger or the
seal is damaged
due to prolonged
aspiration of
The pipettor incor- aggressive liquids
rectly aspirates
the liquid or the
The inside
liquid drops out
of the pipettor
from the tip
is contaminated
No lubrication
on the sealing
elements
15
Instructions
Decrease the
dispensing speed
Replace the tip
with a new one
Immerse the tip
deeper according to
the instruction
(Table 2)
Press the tip firmly
Replace the tip with
a new one
Press the tip firmly
Clean the shaft or
replace it with a new
one
Disassemble the
shaft set; wash the
shaft, the plunger
and the seal
according to point
6.1. Replace the
elements with new
ones if necessary.
Apply a small
amount of lubricant
onto the plunger
and reassemble the
set in the correct
order.
Problem Cause
The inside of the
pipettor is contami-
nated due to aspira-
tion of aggressive
substances
Uneven work The inside
of the pipetting set, of the pipettor
the pipetting is contaminated
pushbutton due to the liquid
gets blocked entering the pipettor
No lubrication
on the sealing
elements, e.g. after
repeated autoclaving
procedures
If the problem continues after carrying out the above
steps, contact your pipettor supplier to conduct repairs.
CAUTION: Before returning the pipettor, please ensure
that the pipettor is completely free of any aggressive
chemical, radioactive, microbiological contamination
which could pose a threat during transport and repair.
Clean the pipettor as far as it is possible.

8. SPARE PARTS

While ordering spare parts for the pipettor please specify
the pipettor type, the serial numbers located on the
handgrip, and specify the name of the part ordered.
CAUTION: Replacement of the plunger set requires
recalibration of the pipettor according to section 5.
ENGLISH
Instructions
Unscrew the shaft
set, wash the parts.
Replace the
elements with new
ones if necessary.
Apply a small
amount of lubricant
on the plunger and
reassemble the set
in the correct order.
16