The GRP (Glass Reinforced Polyester) enclosure houses the main PCB (Printed Circuit Board) and associated terminals under IP66 conditions.
As a recommendation to the CE approval a Double Pole Isolator is supplied with the unit to be fitted external to the panel. This will be installed to provide both local isolation and a means to isolate the unit from the outside under unfavourable conditions.
The main PCB controls the operation of the complete system. It monitors liquid levels within the sump with input from the probe assembly. It operates the submersible pump to discharge water from the bund and maintain a continuous level within the sump.
Alarms are generated by the main PCB under defined conditions.