How to use ilShin Freeze Dryer

How to start freeze drying

         1.         Turn the (1) Key switch to the right (clockwise) 90 degrees (set it to ON).

         2.         Now you can operate all functions. The (2) MANU lamp will be on and the present temperature of cold trap will be indicated on the (7) TEMP GAUGE. No value will be indicated on (8) VAC GAUGE on this time.

         3.         Press (3) REF Button once, the lamp will be on and the refrigeration of the unit will be operating.

         4.         After about 10 min, the number of the (7) TEMP GAUGE will go down to freezing point.

         5.         If the temperature in the (7) TEMP GAUGE is under the –40 °C, press the (4) PUMP button once. The lamp of (4) PUMP will be on and the vacuum pump will be operating.

         6.         After about 10 minutes, the value “999” will show on the (8) VAC GAUGE and this value will go down to approximately 10 mTorr. At this point (VAC GAUGE <100 mTorr, but 10 mTorr is the best), attach your sample bottle(s). From this point, the sample will be dried gradually.

How to stop the freeze drying

         7.         When the test sample is dried, push the button (3) REF Once. The REF LED will go out and the refrigeration will stop.

         8.         Push the button (4) PUMP button, then the PUMP LED will go out and the vacuum pump will stop.

         9.         Push the (5) VENT button once, then the VENT LED will go out and the vacuum state of the chamber and vacuum valves will be released by the automatic valve. (During the switch-off of the vacuum (= during this process), little noisy sound can be heard).

       10.         After the system is totally released, take out your sample.

If you want to freeze dry your next sample, then attach your sample bottles, and push the button (5) VENT once more to go to the next drying process. The VENT LED will go out and the automatic valve will be closed. Next repeat steps 3, 4, 5, and 6.

       11.         Push the (6) DEF. Button once, then, the DEF LED will go on and the ice on the cold trap will be defrosted by the Hot Gas system.

       12.         After the ice is totally defrosted, push the (6) DEF button once more. The DEF LED will go out and the heating process around the chamber will stop. * If the next drying process is not directly followed, you could better defrost the ice in the cold trap without usage of the DEF button.