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RESISTIVITY MONITOR
Calibrate Resistivity Monitor
2-9317-600-00-0 Aquastorm™ Series Options Guide 10-195
Procedure Use the following steps to prepare the system:
1. Turn Aquastorm™ system Off.
2. Remove front and rear access panels from the entrance end of the system
and set aside.
3. Use a flathead screwdriver to unfasten and remove the resistivity monitor
front panel.
4. Disconnect CA-20 from the resistivity meter.
5. Turn Aquastorm™ system On.
Procedure Use the following steps to calibrate the resistivity monitor:
1. Connect the AMP meter as shown in Figure 10–6 on page 194 and set the
meter to the proper scale to read 20 mA.
2. During all the adjustments press and hold the Set Point Check switch.
3. Turn the set point trimmer (R31) until the test meter displays a reading of
0.00 (or as close as possible).
4. Turn the 4-20 mA null trimmer (R32) until the test meter indicates 4 mA (or
as close as possible).
5. Readjust the set point trimmer (R31) until the test meter displays 19.99 (or as
close as possible).
6. Turn the 4-20 mA full scale trimmer (R20) until the test meter indicates 20
mA (or as close as possible).
7. Repeat Step 3. to Step 6. to readjust or fine tune settings.
Procedure Use the following steps to reassemble the system for operation:
1. Turn Aquastorm™ system Off.
2. Disconnect the AMP meter.
3. Use a flathead screwdriver to replace the resistivity monitor front panel.
4. Replace the front and rear access panels at the entrance end of the system.
5. Turn Aquastorm™ system On and resume system operation. For detailed infor-
mation refer to the Aquastorm 200™ Programming and Operations Guide.
Procedure Use the following steps to check the Aquastorm™ control panel resistivity
readings:
1. Turn Aquastorm™ system On.
2. View the Aquastorm™ main screen to check the resistivity setpoint and actual
values. The menu readings display the same values as the resistivity meter.
3. As the system operates periodically check the resistivity values.
4. If the low setpoint alarm activates, it indicates rinse water is contaminated or
dirty and should be purged and replaced with clean DI water.
5. Replace the water and resume system operation.
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