BRAND Transferpette-8 Instrucciones De Manejo página 71

ð
The display shows 'rEF'.
b.
Carry out reference run: Pressing the pipetting key once triggers the reference run.
ð
A clear functional noise can be heard.
ð
After the reference run, the display automatically switches back to the previously set program.
10 Maintenance
In order to ensure proper functioning, the Transferpette® -8/-12 electronic should be serviced at regu-
lar intervals and cleaned as necessary.
What must be checked?
a.
Check the pipette shafts, pistons, and seals for damage and contamination.
b.
Check the device for leaks. We recommend using the BRAND leak detector, the BRAND PLT unit.
As an alternative to this, aspirate a sample and hold the instrument vertically for approx. 10 s. If drops
form at the pipette tips, see Troubleshooting, p. 80.
10.1 Separate the pipetting unit from the handle
Example pipetting unit up to 100 µl
a.
Eject the pipette tips.
b.
To separate, pull the pipetting unit from the handle downward as far as possible. Only then, turn
it clockwise. After one revolution, the unit no longer needs to be pulled downward while turning.
c.
If the pipetting unit is unscrewed, it must be pulled down again in order to disconnect the mag-
netic coupling.
> When assembling, the pipetting unit must be screwed counter-clockwise onto the handle so that it
clicks into place.
> When assembling, do not pull the pipetting unit downwards.
> Improper handling can lead to damage.
Transferpette® -8/-12 electronic 997200
Example pipetting unit up to 1250 µl
NOTICE
10 Maintenance
71
Operating manual