Pre-Selection; Pre-Selection Of Speed / Rcf-Value; Pre-Selection Of Running Time - Hermle Z 327 K User Manual

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OPERATION

2.3 Pre-Selection

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.

For all number marked text, please refer to Figure 23.

Figure 23

As long as no rotor is inserted, the speed is adjustable between 200 rpm and the maximum

revolution of the centrifuge.

If there is a rotor in the centrifuge, the speed can only be pre-selected up to the maximum

permissible revolution of that rotor. 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 5: Max. Speed and RCF-Values for Permissible Rotors", (see APPENDIX P. VI). All

important values are listed on this table.

ATTENTION:

Please check the maximum permissible revolutions of your test tubes! (Producer

Indication)

The running time can be pre-selected in 3 different ranges: from 10 seconds up to 99 hours 59

minutes.

1. Range from: 10 seconds up to 59 minutes 50 seconds, in steps of 10 seconds

2. Range from: 1 hour up to 99 hours 59 minutes, in steps of 1 minutes

3. Range: Continuous Run "cont", can be interrupted by the key, "stop" (10).

The running time can be pre-selected, with the lid opened or closed.

To activate the setting of the running time, press the key "time" (6).

In the display, "time" (A-3) flashes the indication: "m : s" or "h : m", depending on the previous

setting.

Z327K_V1.22_eng

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