Hach-Lange FILTRAX eco - Manual (Page 31)

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Section 4 Operation
4.1 Control unit operation
All the instrument functions are software-controlled; they are
menu-operated via four keys below the display. The display
indicates the operating condition of the heater (
Figure 20 , item 1 ).
The program menus are accessed by pressing one of the four
function keys F1–F4 (
Figure 20 , item 2 ) for 3 seconds.
The meaning of the menu buttons (abbreviated) is indicated in the
second display line (softkey function):
= Cancel
= Setting change
= Back to previous menu item
= Move to next menu item
Figure 20 Display
1 Operating condition of the tube heater, alternative:
messages, warnings, malfunctions 2 Function keys
4.2 Overview of control unit menu
Menu level 1 Menu level 2
+DEVICEDATA
for adjusting the instrument parameters
 CONTRAST
LANGUAGE
HEATER
HEAT.START
HEAT.STOP
DATE
TIME
PASSWORD
SW-VERSION
SW-CO.PROC.
+SIGNALS
for checking internal data when servicing
TEMPERATURE (control unit)