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10. Pipettor Maintenance
Depending on the applications and the intensity of use,
the pipettor requires periodic maintenance.
The components most exposed to vapors of aggressive
solutions, such as shaft elements, should be regularly
checked and cleaned.
To properly carry out the maintenance, familiarize your-
self with the design of the shaft holder set shown in
Figures 10A, 10B, and follow the instructions given in this
Section.
Do not use sharp tools for pipettor maintenance.
It may cause damage to the device and affect
the user's safety.
Cleaning
External surfaces of the pipetting pushbutton, the ejec-
tor pushbutton, the handgrip, the shaft nut, and the
adjustment knob may be cleaned using a cloth damp-
ened in isopropyl alcohol. The remaining parts removed
from the pipettor during pipettor disassembly may be
washed with distilled water or isopropyl alcohol.
NOTE: Before using cleaning agents other than those
recommended by the manufacturer, check the compat-
ibility charts and consider chemical resistance of the
following plastics: PP, PC, POM, PA, PPS, PVDF used to
produce the pipettor parts.
Dismantling shaft elements of the single-channel
pipettor:
• Holding the pipettor handle, unscrew the lower part by
turning the tip ejector (D) until released.
Then proceed according to the pipettor models shown
below.
16 – VWR UHP PIPETTORS
10A
M
G
*Seal (J) used only in models 2 and 10 µL
F
J*
I
C
D
Instruction Manual – 17
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