Eppendorf Maxipettor 4720 - Manual (Page 10)

Operation
Varipette
® 4720
English (EN)
10
4 Operation
4.1 Inserting and removing the Varitip
Hold down the pipetting lever throughout the entire insertion and removal process.
Abb. 3:Inserting the Varitip
Fig. 3: Inserting the Varitip
1. Press the pipetting lever sufficiently often for
the locking clamp to move right to the bottom.
Keep the pipetting lever pressed down.
2. Raise the clamping lever.
3. Slightly turn the Varitip P or the dispensing unit
of the Varitip S while pushing it into the clamp
or pulling it out of it.
When inserting the piston its coupling block
will slide into the shaft of the locking clamp by
itself.
4. Carefully apply pressure to push the coupling
unit into position, if required.
5. Lower the clamping lever and push it into
place.
6. Let the pipetting lever slide back slowly to the
upper stop. Do not let the pipetting lever snap
back.
Abb. 4:Valve in the Maxitip
Fig. 4: Valve in the Maxitip
7. For the Varitip S: The valve may be inserted
into the Maxitip in any orientation.
The valve seals the tip of the Maxitip,
preventing the liquid from dripping out.
8. Plug the Maxitip onto the dispensing unit.