
DCM 200 Installation
Page 12
2.2.2.
Sensor Installation
• Check that all fittings of the assembly have O-rings installed, and fittings are secure.
• Adjust flow switch shaft so the top of the ring at the bottom of the shaft is at the 12.5 gph mark, and
tighten the compression nut to keep the shaft from leaking and secure the flow switch shaft in place.
• When you are ready to open up the sample water valves, remove the protective caps from the pH and
ORP sensors, and clean both sensors with Isopropyl alcohol followed by a mild acid, using a soft
bristled toothbrush.
• Open the supply and return valves fully to evacuate all the air from the modular sensor housing.
• Once all air has been evacuated, reduce flow through the assembly to 10-12 GPH for optimum sensor
performance.
• Allow sensors to equilibrate while you complete the wiring of the controller.
pH sensor
Aquatic Sensor Placement in
DGMa Modular Sensor Housing
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