Pre-Selection Of Temperature; Pre-Cooling - Hermle Z 327 K User Manual

Table of Contents

OPERATION

2.3.4 Pre-Selection of Temperature

This function is activated by the key, "temp" (13). After pressing the key, in the display "temp",

flashes the indication, "°C" (A-4). With the control field (1), the desired test temperature can be pre-

selected, in steps of 1°C in a range from: -20°C to +40°C.

The value is indicated permanently in the display, (see Figure 26) - before, during and after the run.

Please notice the respective lowest temperatures of the rotors, at maximum speed

Table 4: Lowest Temperature at Max. Speed

(see "

Figure 26

If the samples are "temperature sensitive", it is critical to pre-cool the centrifuge, the rotor and

eventually the buckets, to the needed working temperature. Therefore, insert the desired rotor and

pre-set the respective temperature. By simultaneously pressing the keys, "temp" (13) and "time" (6),

the run will begin. While the unit is running, it automatically chooses a rotational speed that is

equivalent to 30 % of the permitted rotational speed, of the respective rotor. After the pre-set

temperature is reached, you can opt out of the pre-cooling run, with the "stop" key (10).

Depending on the inserted rotor, the pre-cooling lasts between 10 to 20 min.

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

Figure 27

" , APPENDIX P. V).

Z327K_V1.22_eng

Table of Contents