Gilson Pipetman Ultra U2 User Manual page 24

PIPETMAN
C) Closing-up
1) Refi t each tip-holder/piston assembly so that the
top of the piston and the tip-holder snap into the
upper and lower rakes, respectively. To facilitate
fi tting a piston assembly to the upper rake, you
should incline the piston assembly and compress
the piston-spring against the upper rake, before
pushing the assembly into place.
2) Close the piston tray-cover, after checking that
all assemblies are correctly installed.
3) Refi t the wire-clips and the wire guides for 12
channels.
4) Slide the cover-ejector back over the piston-tray
and reattach using the two screws.
a Changing the Battery
To ensure better performance and maximize battery
life, a new battery block for Pipetman Ultra has been
designed. The battery pack includes two silve-oxyde
plated 1.55V generic code 391 (size 11.6 x 2.1 mm).
Although changing the battery block does not aff ect the
calibration, you may wish to take this opportunity to carry
out performance check of the pipette (see chapter 15).
If you need to change the battery block, proceed
as follows:
1) Ensure the pipette is in the locked position,
remove the tip-ejector,
2) Remove the battery
compartment cover
(the calibration key is
equipped with a tool
for opening the battery
compartment cover) by
carrying out the follow-
ing steps, with reference
to the photographs:
24
u
®
ltra
Tool