Lid Lock; Pre-Selection; Pre-Selection Of Speed And Rcf-Value - Hermle Z 287 A Operating Manual

Universal centrifuge
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OPERATING

2.3.2 Lid Lock

The lid must only be closed slightly. After closing the lid, the word "open" (M2) will no longer be
displayed. As a sign that the centrifuge is ready for starting, appearing in the display, "rpm/rcf"(A-1),
the word "close" (M1). Simultaneously, the word "rotor" (M3) appears, as well as the code number of
the rotor, which is in the centrifuge, along with all rotor specific data, for example: max. speed,
acceleration etc., are available.
Please refer to Figure 12.
ATTENTION:
Before closing the lid, please check if the rotor is tightened.

2.4 Pre-Selection

2.4.1 Pre-Selection of Speed and RCF-Value

By Selecting the key, "rpm/rcf" (4), pre-selection is activated. By pressing the key once, the word
"rpm" (M5) flashes. By pressing the key again, the pre-selection of the centrifugal forces can be
chosen. The flashing word, "rcf" (M6), will appear.
The desired values can be selected, with the control field (1). In the display (A-1), the regulated
value is shown permanently: before, during and after the run.
This pre-selected value will be stored, as long as a new pre-selection is made.
For all number marked text, please refer to Figure 13.
Figure 13
As long as the centrifuge lidis opened, the speed is adjustable between 200 rpm and the maximum
revolution of the centrifuge.
If the centrifuge lid is closed, the speed can only be pre-selected up to the maximum permissible
revolution of the selected rotor type. It is the same with the pre-selection of the RCF-Value. The
setting range is between 20 xg and the maximum permissible centrifugal force of the rotor.
See Table 3: Max. Speed and RCF-Values for Permissible Rotors, (see APPENDIX P. IV). All
important values are listed on this table.
ATTENTION:
Please notice the maximum permissible revolutions of the test tubes (Producer Indication)!
See also chapter 3.1.6
16
Z287A_V1.19_
eng
© Hermle Labortechnik GmbH

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