Maintenance - Pentair intellichem Installation And User Manual

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MAINTENANCE

Cleaning the Flow Cell Sensors: To clean the ORP and pH sensors, turn off the AC
source power to IntelliChem at the GFCI switch. Disconnect the probe connectors from
the Flow Cell, unscrew the probe and carefully remove them from the Flow Cell. Clean the
reference junction (the white ring at the bottom of the probe body) with a soft toothbrush. A
household liquid dish washing detergent may also be used to remove any oil. Rinse with
fresh water and reinstall probes. If properly cleaned probes continue to provide unstable
readings or require excessive calibration, the probes should be replaced. Probe exposed
to atmospheric conditions will cause the probe tips to dry out. Store the sensors with the
included plastic sensors storage caps if removed from the Flow Cell for more than one
hour. If the storage caps have been misplaced, store the probes individually in small glass
or plastic containers with clean water covering the sensor tips. Store sensors in a location
that will not be subjected to freezing temperatures.
Sensor Care
Contamination of the sensing elements often results in slow response and inaccurate
readings. Clean the elements by the following procedures:
pH and ORP Sensors
1. Wash electrode tip in a liquid detergent and water. Carefully use a soft
bristled toothbrush to wash the electrode tip and white sensing ring.
2. Rinse after cleaning. To reinstall the flow cell (see page 33). Hand tighten
to sensors to secure in place.
3. Make sure the O-ring is installed on sensor.
4. If the cable is longer than needed, it should be coiled neatly and attached
under the enclosure.
pH Sensors Only
5. Attempt to clean the sensor with liquid detergent first.
6. If this is not successful, swirl the tip of the sensor in a 5 parts water and 1
part muriatic acid solution for 10 - 20 seconds.
7. Rinse again and reinstall.
WARNING Do not rub hard the glass element in the sensor or use sand paper or other polish-
ing material to clean. HANDLE ELECTRODE CAREFULLY Sensors contain external and internal
glass elements. Do not drop or otherwise subject the sensor to vibration, physical impact, or
freezing conditions. ANY TYPE OF BREAKAGE IS NOT COVERED UNDER WARRANTY.
pH and ORP Sensors: pH electrodes sense the acidity of the water and work with
any acid or base. The blue bands on the cables identify the pH sensors. The red bands
on the cables identify ORP sensors. Each sensor is also identified on the sensor
body. ORP electrodes are used to monitor the Oxidation Reduction Potential (ORP is
sanitization quality of the water) of a given solution. The sensing element of the ORP
electrode is made of a precious metal such as platinum or gold.
Sensors: IntelliChem measures the following sensor measurements with the listed
characteristics:
pH Range: 4.00 to 9.99
ORP Range: 0 to 999 mV
Flow Switch: This input measures if a switch is open or closed. Open is no water flow.
A closed switch indicates flow.
INTELLICHEM Controller Installation and User's Guide
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