Gilson PIPETMAN P, Manual

Page: 15 / 84

15
ENGLISH
Symptom
P
o
ssible
Cause
A
c
ti
o
n
Pipette is leaking sample
W
orn O-ring or seal.
Replace
both
parts.
Pipette
won’t
aspirate
Worn O-ring or seal.
Replace
both
parts.
Tip holder is loose.
Tighten
connecting
nut.
Piston is damaged (chemically or mechanically).
Return
pipette
to
supplier.
Damaged tip holder.
Replace
the
tip-holder.
Connecting nut is loose.
Tighten
connecting
nut.
Pipette is inaccurate
Improper
assembly.
See
'Maintenance'.
Unscrewed tip-holder.
Tighten connecting nut.
Connecting nut is loose.
Tighten
connecting
nut.
Pipette is not precise
Tip-holder
is
loose.
Tighten
connecting
nut.
Incorrect operator technique.
Operator training.
Worn O-ring or seal.
Replace
both
parts.
Connecting nut is loose.
Tighten
connecting
nut.
Piston is damaged (chemically or mechanically).
Return
pipette
to
supplier.
Damaged
tip-holder.
Replace the tip-holder.
Tips fall off or don’t fit
Low
quality
tips.
Use
Gilson
Diamond
Tips.
Damaged
tip-holder.
Replace the tip-holder.
Damaged
tip-ejector.
Replace the tip-ejector.
11 - LEAK TEST
This test may be performed at any time to check
that the pipette does not leak, especially after
performing a maintenance or decontamination
procedure. If a pipette fails this test you should
replace the O-ring and seal and repeat this test,
after making sure that the pipette is correctly
reassembled.
P2 to P200
- fit a Gilson Diamond Tip,
- set the pipette to the maximum volume given
in the specifications, and pre-rinse,