Eppendorf Research plus - Manual (Page 21)

5 Maintenance
21
Eppendorf Research® plus — Operating manual
Removing and installing channels
Channels must only be removed and installed if the multi-channel lower part is separated from
the upper part! The channels in the lower parts consist of a piston, a cylinder and a spring. The
channels for 100 μL and 300 μL are equipped with an O-ring at the tip cone (see Replacing
O-rings on p. 16).
1. and : position a pipette tip under the piston and carefully take the piston off the upper
rail.
2. Carefully pull the piston out in an upward direction. Do not bend the piston.
3. Hold the tip cone at the lower end and push it slightly upwards .
This compresses the spring.
4. : lift the tip cone slightly and release it from the lower rail.
5. : relax the spring by letting the tip cone slide back again above the lower rail.
6. : take the tip cone with the cylinder and the spring out of the upper rail.
Before installation, slide the piston into the cylinder. Install the channels in reverse order.
Assembling the 10 - 300 μL multi-channel pipette
1. Fit the cover plate with the integrated ejector.
2. Push the latches upwards.
3. To mount, push the lower part into the upper part until it audibly engages.
4. Carry out a gravimetric test of the systematic and random error (see p. 35).
This test ensures that no parts were confused during assembly and that the pipette has been
assembled correctly.
1 2 3 4 5
1 2
3
4
5
5
5
Main
tenan
ce