Defrost - Hitachi CP100NX Instruction Manual

3-4-4 Defrost

The presence of frost or moisture in the rotor chamber (especially in the bowl) prior to
a run will considerably lengthen the time it will take to reach a high vacuum level. This
centrifuge comes with a defrost function that heats and evacuates the bowl to quickly
remove frost and moisture.
Enable the defrost function in the following situations to remove frost and dry the rotor chamber.
1) Defrost and dry the rotor chamber before rotor operation and after removing the rotor.
2) To prevent condensation in the rotor chamber after ending a run when the rotor is removed.
(1) Defrost method
Step Touchscreen operation
1 Press the [DEFROST] button
in the MENU screen.
2 If the rotor is rotating, press
the [DEFROST] button. If the
rotor is standing still, check
that the door is closed before
pressing the [DEFROST]
button.
To stop defrosting, press the
[Normal] button.
3 Press the Run screen tab.
Screen displays and notes
Pressing the [DEFROST] button when the rotor is standing

still will immediately start defrosting.
NOTE
If the [DEFROST] button is pressed when the rotor is
standing still and the door is open, the function will be
disabled a few seconds later and the Function Selection
Area in the Run screen will display a "Door open" alert. Be
sure to close the door when starting defrosting after the
rotor stopped.
The touchscreen displays the Run screen again.

 [Defrost] is indicated above the [VACUUM] button.
3-70
3-4-4 Defrost
The Defrost setting
●
screen appears.
[DEFROST] button
The [DEFROST]
●
button is surrounded
by a yellow frame to
indicate that
defrosting has
started.