Rev. 15‐03‐2017
7
Before star ng the pump for the first me , open the central by‐pass valve fully to avoid any over pressure in
the cell housing. Once the pump is running, open the inlet and outlet valves slowly un l they are fully open.
You can then par ally close the central valve in order to send the flow through the cell un l you have a rapid
an uniform flow. The water must flow at a sufficient speed thought the cell. If the flow is too low scale could
build on the electrodes. If the installa on is not provided with a dedicated pump for the chlorinator, adjust
the flow rate by ac ng on the by‐pass centre valve.
When the cell is being filled the air trapped in the cell housing can prevent the water to flow. You can tem‐
porarily loose the flow switch in order to evacuate the air inside. Once the cell housing is completely filled,
don’t forget to re ghten the flow switch. Verify that the arrow marking on the flow switch corresponds to
the water flow a er re ghtening.
6. ELECTRICAL CONNECTIONS
Power supply cable
The chlorinator must be powered to 230 VAC. Connect the three‐wire power supply cable (marked “230 VAC
power supply”) to a permanent 230 VAC mains power supply with protec ve earth. The voltage on this cable
must be keep constant as long as the chlorinator is in use.
DO NOT INTERRUPT
the power on this cable
along the pump working cycles or by means of any other control device. In order to control the chlorinator
produc on cycles use the
External Control Cable
. Disconnect the power supply only when you are not going
to use the chlorinator or in case of fault.
The chlorinator must impera vely be connected to a protec ve earth through its power supply cable
and protected by a 30 mA residual circuit breaker.
External Control Cable
The two‐wire cable marked “
EXTERNAL CONTROL 230VAC
” is used to start and stop the chlorine produc on
synchronically with the pump working cycles or by means of a control device. When the voltage applied be‐
tween the two wires is 230VAC the chlorinator will produce chlorine. When the voltage between the wires is
0 VAC the chlorinator will halt the chlorine produc on and enter a pause mode. Therefore, the voltage ap‐
plied to the control cable must be driven by the same means, signal or device that powers or controls the
pump.
Make sure that the voltage applied to the External Control Cable is 230VAC ONLY when the pump is
running and the water flows freely through the cells and to the pool.
6. OPERATION
The SMC50‐75 cell is controlled by means of a keyboard and a display. In a electroly c cell, chlorine genera‐
on is propor onal to the electrical current flowing through it .The SMC50‐75 will try to maintain a constant
electrical current in the cell according to the chlorine produc on rate (0—100%) set by the user. The values
of current and voltage in the cell are constantly displayed in the main screen. In normal condi ons and at
100% produc on rate the current value (I1) must be as follows:
SMC50: 7.0 A to 8.5 A
SMC75: 11.0 A to 13.5 A
