HTL DISCOVERY PRO DP2 Manual De Instrucciones página 9

Problem Cause
The liquid is
dispensed too fast
Droplets of liquid
remain in the pipette
The tip wettability
tip
has increased due
to extensive use
The pipette tip
immersion is too
shallow
Air bubbles appear
The pipette tip
in the liquid
is incorrectly
aspirated into
pressed onto
the tip
the pipette shaft
The tip is damaged
or worn out due to
extensive use
The pipette tip
is incorrectly
The pipette
pressed onto the
incorrectly aspirates
pipette shaft
the liquid or the
The shaft surface
liquid drops out from
is damaged
the tip
or contaminated
at the sealing site
The plunger or the
seal is damaged
due to prolonged
aspiration
The pipette of aggressive liquids
incorrectly aspirates
the liquid or the
The inside
liquid drops out from
of the pipette
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 accord-
ing to point 6.1.
Replace the ele-
ments 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
pipette is contami-
nated due to aspira-
tion of aggressive
substances
Uneven work The inside
of the pipetting set, of the pipette
the pipetting is contaminated
pushbutton due to the liquid
gets blocked entering the pipette
No lubrication
on the sealing
elements, e.g. after
repeated autoclaving
procedures
Liquid with proper-
ties other than water
(density, viscosity)
Incorrect aspiration
The volume adjust-
ment knob used in
the "CAL" mode
If the problem continues after carrying out the above
steps, contact your pipette supplier to conduct repairs.
CAUTION: Before returning the pipette, please ensure
that the pipette is completely free of any aggressive
chemical, radioactive, microbiological contamination
which could pose a threat during transport and repair.
Clean the pipette as far as it is possible.
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.
Calibrate the pipette
using the liquid
which is to be
pipetted
Calibrate the pipette
according to
section 5
16