Hach-Lange 9187 sc - Manual (Page 18)

16
Installation
Figure 10 Quick-connect Fitting pin assignment
3.7 Instrument and Controller Startup
1. Ensure the flow regulator is threaded (clockwise) all the way and is snug but not
overtightened.
2. Turn on the sample stream.
3. Slowly open the flow regulator ( Figure 11 ) counterclockwise until consistent flow is
achieved at a rate in which the flow cell can be flushed out for about two minutes.
Check for leaks at this time. If leaks occur, fix by ensuring all connections are snug but
not overtightened.
4. Adjust the flow regulator on the flow cell until the water begins to drain out the left
drain port. This results in a constant 14 L/hour (200–250 mL/min) flow rate.
5. Supply power to the controller and it will automatically power on.
6. Allow the instrument to stabilize before proceeding. This usually takes between 2–48
hours.
Number Designation Wire Color
1 +12 VDC Brown
2 Circuit Common Black
3 Data (+) Blue
4 Data (–) White
5 Shield Shield (grey wire in existing quick-disconnect fitting)
6 Groove
1
2
3
4
5
6