Hach-Lange SD900 User Manual - Manual (Page 18)

Figure 11 Pump on and off times at 50 °C (122 ºF)
1 Time (in minutes) that the pump must stay off 3 Example: if the pump is on continuously for
5 minutes, the pump must stay off for 15 minutes.
2 Time (in minutes) that the pump is on continuously
Close the cover
To close the cover, align the latch plates as shown in Figure 12 and close the latches.
Figure 12 Latch plates alignment
Set the power to on
Push the power button to set the power to on or off. Make sure that the power supply (AC power or
battery power) is correctly installed.
User interface and navigation
The controller keypad is shown in Figure 13 . Use the MENU key to set up sampling programs,
configure the controller settings or complete the diagnostic tests. Use the arrows, ENTER and BACK
keys to scroll through the menu, make selections and enter values. Look for arrows on the bottom or
side of the display screen to know when more options are available.
16 English