User Guide

Minimal tank assembly: only the normal level sensor is used, the irriga-

tion is made manually, regardless of the water composition or level. The

controller will refill the tank if the water goes under normal level for about

15 minutes or if the fill button is pressed.

Note: The inlet of the circulation pump must be below its outlet to avoid

damages to the pump itself.

CONNECTIONS AND WIRING

Wiring the controller

• Make sure the power supply is disconnected.

• Make sure all the auxiliary power sources are off.

• Unscrew the 4 screws from the right hand panel and remove the lid

and the gasket.

• Thread the wires through the access port on the right hand side of the

controller.

• Before connecting the controller to the mains, wire it completely,

connect the pumps, valves, alarm, probes, level sensors and user

input.

• Replace the lid. Connect the controller to mains line.

• Turn on all the auxiliary sources.

pH electrode and ground probe connections

• Attach the in-line pH electrode (for example HI 1001) to the BNC

socket on the bottom of the controller.

• Use the matching pin (differential input) to prevent potential ground-

ing problems and thus ensure longer life to the electrode.

• If the matching pin is not used, short pin 1 and pin

2 of the external connector located in the right panel.