Gilson Pipetman Ultra U2 User Manual page 22

PIPETMAN
You should also remove them for cleaning or decon-
tamination purposes, and to lubricate the pistons.
1) Examine the ejector-cover, if it is cracked or badly
corroded it should be replaced with a new part.
Otherwise, it should be cleaned and if necessary
autoclaved.
2) Check the piston for damage or corrosion. Lubricate
and replace as necessary.
3) After removing the locking clip, gently pry out
each tip-holder's internal components: locking-
clip, spring, O-ring and seal-holder – this can be
done using the reassembly tool. Replace or clean
and decontaminate these components. Replace or
clean and decontaminate the tip-holder.
The O-ring can get trapped in tip-holder. Use a fi ne plastic
probe to extract the O-ring.
Tip-holder
8/12x20
Tip-holder
8/12x300
22
Piston
O-ring Seal-holder
Piston
O-ring Seal-holder
u
®
Piston spring
Tip-holder spring
Piston spring
Tip-holder spring
ltra
Locking-clip
Locking-clip