Eppendorf Reference - Manual (Page 26)

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Eppendorf Reference® – Part B – Maintenance
– Unscrew pipette at the central junction.
– Press control button and hold down. Hold piston at the top of the piston moun-
ting and pull off. If the piston fits too tightly, the spring at the piston mounting
can be pressed down slightly with side B of the wrench and the piston then pul-
led off.
– Attach new piston down to the stop and lubricate lightly.
The lower parts of the Reference-Serie can be completely disassembled for
cleaning and maintenance using the wrench provided.
The wrench has the following functions:
A = Narrow opening: for loosening and tightening the tip cone.
Wide opening (D): For tightening the tip cone (with the lettering
facing the pipette tip).
The wrench is designed in such a way that the tip cone cannot be
tightened too much.
B =For loosening the screw in the tip cone.
During assembly, for mounting the screw, spring and seal and tigh-
tening the screw.
During alignment, for adjusting the volume display.
C =For removing the seal in the tip cone.
I Exchanging the piston
II Exchanging the seals
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