Eppendorf Research plus - Manual (Page 25)

5 Maintenance
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Eppendorf Research® plus — Operating manual
5.5.3 Changing the factory adjustment
Auxiliary equipment
•
Supplied safety plug tool
•
Supplied pin to loosen the safety plug
The systematic and random errors recorded on delivery can be found in a "Certificate of
Conformity". This certificate is included in the delivery. Changes to the factory adjustment will
render the certificate void.
If the dispensing accuracy is only be to changed temporarily, the correct method is to change the
user adjustment. Before changing the user or factory adjustment, observe the general notes
(see General notes on user and factory adjustment settings on p. 22) and the associated
gravimetric tests.
5.5.4 Research plus variable - changing the factory adjustment
If a gravimetric test indicates that an error needs to be corrected and you are required to carry out
a change to the factory adjustment, proceed as follows:
It is possible to change the factory adjustment with the
corresponding accessories for a Research plus with variable
volume setting. If the factory adjustment of the Research plus has
been changed by a user, this can be recognized by a red safety
plug behind the ejector. If the Research plus has been adjusted and
calibrated by Eppendorf AG, this is indicated by a gray safety plug.
Hint!
In the case of Research plus fixed-volume pipettes, modifications are only possible by
changing the user adjustment (see Changing the user adjustment on p. 24).
1. Check whether the adjustment display on
the side is set to "0".
If the adjustment display is not set to "0",
you will first need to set it to "0" with the
adjustment tool. In this case, instead of
continuing with the factory adjustment
changes, carry out a gravimetric test of the
Research plus with the adjustment display
set to "0".
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