6 Operation
22 K-439 Operation Manual, Version B
6 Operation
This chapter gives examples of typical instrument applications and instructions on how to operate the
instrument properly and safely. See also section 2.5 “Product safety” for general warnings.
6.1 Operating controls and housing
The SpeedDigester K-439 is equipped with electronic temperature control, an integrated LC-display
and a membrane keypad with multifunctional keys.
Up to 50 methods can be programmed, 20 of which are already predefined by default.
A method consists of Preheat step, 4 possible temperature steps and cooling-down time.
The programmed method is visualized graphically and during the digestion process the actual temper-
ature and the set temperature as well as the remaining time are displayed. The current status during
digestion is visualized by the icons at any time.
6.1.1 SpeedDigester K-439 — front side
Heating chambers
LC- display
Membrane keypad
Mains switch
USB interface
• The mains switch is illuminated green when the system is switched on
• USB interface — for service purposes only
• Membrane keypad — covered by anti-corrosion foil
• Graphical LC- display
• Two heating chambers
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