Evoqua WALLACE & TIERNAN GMS PLUS, Original Instruction Manual, Page: 49 / 116

GMS
plus
Installation
5.
49
Setting the zero point current Proceed as follows:
1 Open the GMS plus housing.
2 At Chloratect input I (terminal 21/22) or Chloratect input II
(terminal 25/26), install the 1 MOhm resistor.
Please note
In the GMS plus , the 1 MOhm resistor is factory installed.
3 Select the menu "DIAGNOSIS" - "Input I" to display the cell
current.
4 Using the potentiometer "Zero point 1", set the following cell
current (upper left corner of the GMS
plus -PCB):
Please note
Setting sensor channel II:
Follow the same procedure as with sensor channel I but select the
menu "DIAGNOSIS" - "Input 2" and set the appropriate cell
current with the potentiometer "Zero point 2".
5 Unclamp resistor and put in a safe place.
(e.g. attach to the housing with adhesive tape)
Please note
These resistors are needed when replacing the sensors and
restarting the system.
Chlorine 1.2µA
Chlorine Dioxide 1.2µA
Ozone 0.4µA
A Zero point potentiometer sensor I
B Zero point potentiometer sensor II
B
A