Specifications

23G-Series RO System
3024270 Rev G 111 14Oct13
5. Locate the potentiometer marked “feed” on the main circuit
board.
The circuit board for the potentiometers is located in the door of the
ECM-100 enclosure.
The potentiometer marked “feed” is located in the center of the
main circuit board.
6. Adjust the potentiometer marked “feed” until the ECM-100 feed
conductivity reading matches the conductivity as measured by
the hand-held meter [at 77°F (25°C) for some meters].
• Counterclockwise (CCW) increases the conductivity
reading.
• Clockwise (CW) decreases the conductivity reading.
NOTE:
The 23G displays conductivity in microSiemens (S).
NOTE:
If the feed conductivity cannot be calibrated with the potentiometer marked
“feed” the sensor may need to be replaced.
7. Shut off the machine, remove the feed conductivity probe and
check to be sure it is not fouled and the graphite tips are not
broken.
8. Reinstall the feed conductivity probe.
8.5.5 Restoring the Rejection Low Alarm Setting
1. Press the UP ARROW to change the Rejection Low alarm
back to its original setting (the factory default for Rejection Low
is 88%).
2. Press the ENTER key to save the new value.
3. Press ESC twice to exit back to the main screen.
8.5.6 Calibrating the Permeate Conductivity
If the ECM-100 permeate conductivity reading matches the hand-
held meter reading, then the permeate conductivity is calibrated.
If the permeate conductivity reading is 1.0 or less refer to ECM-100
Troubleshooting (Section 7.2).