Imbalance Detection; Timer Function - Hermle Z 216 M User Manual

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OPERATION

2.7 Imbalance Detection

In case the rotor is not equally loaded, the drive will turn off, during acceleration. The rotor decelerates

to a standstill.

When in the display "time" (A-3), the word "error" (M11) along with the number "01" appears, the

weight difference of the samples are too large. Weigh out the samples exactly!

Load the rotor as described in Chapters: 2.1.2 and 2.1.3.

When inside the display "time" (A-3), the word "error" along with the number "02" appear, (see Figure

28).

Potential Reason for the Error Screen: The imbalance switch is defective.

Figure 26

This timer function enables to program a planned ending or start of centrifugation. After closing the

centrifuge lid and setting all the needed values, the timer function can be activated.

For this purpose press the bottom „time" (6) for five seconds. This will take you to the time setting of

the timer and the display "rpm/rcf" (A-1) shows the words "End in". The display „time" (A-3) shows

the remaining time until the end of the centrifugation. The remaining time can be set between 1 min

and 99 h 59 min by pressing the bottom "time" (6) and turning the adjusting knob (1).

Alternatively to the "End in" mode, you can choose the "Start in" mode by pressing the bottom

„rpm/rcf" (4). The display „time" (A-3) shows the remaining time until the start of the centrifugation.

The timer starts automatically after setting the needed value. The set time can be adjusted by

pressing again the bottom "time" (6) and turning the adjusting knob (1).

You can interrupt this function by pressing the bottom "stop" (10) or the bottom "lid" (11). During the

timer mode, all the other bottoms have no function.

For all number marked text, please refer to Figure 27 and 28.

Z216M_V2.21_eng

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