36 MAINTENANCE4 TROUBLE SHOOTING4.1 Error messages: Cause / SolutionPreface:The error messages are listed to help localize possible errors faster.The diagnose referred to in this chapter may not always be the case, as they are onlytheoretically occurring errors and solutions.Always, please keep us informed about any kind of error occurring, which is not listedin this chapter. Only through your information we are able to improve and completethis instruction manual.Many thanks in advance for your support.OHAUS Corporation4.2 Survey of possible error messages and their solutions4.2.1 Lid release during power failureIn case of power failure or malfunction, the lid of the centrifuge can be openedmanually in order to protect your samples.Please proceed as follows:• Switch the centrifuge off and unplug the power cord.• At the right side of the centrifuge there is a plastic stopper.• Remove this stopper, fastened to it there is a string which is connected to theelectronic lid lock.• If you pull the string slightly the lid will open.ATTENTION: Don't put your hands in the rotor chamber as long as the rotor is stillspinning!• Put the plastic stopper back in the unit again, for ongoing work.