Description
Quadro de nível digital para rigoroso controlo de nível em função da intensidade do consumo da bomba submersível. De simples instalação, sem sondas de nível, com auto-calibração do consumo da bomba e alarme visual. A temporização de espera de água é regulável, com controlo de disparo térmico eletrónico contra sobrecargas, falta de fase e falhas na ligação ao motor.
Applications
Electrical level control box without borehole or well probes, equipped with digital control relay and protection of submersible electric pumps from 1 to 13 Amps.
Against lack of water.
Excessive motor consumption (thermal trip).
Shortness of breath in the expansion vessel (protection against successive starts and stops).
Under and over voltage protection.
Counts hours of operation of the pump (no possibility to reset).
Possibility to enable or disable protections.
Operation
1. Make the connections as shown on the sticker with the switch off (0).
2. Switch the switch to automatic (aut).
3. After contact pair P11 and P12 are closed, the contactor arms and starts the pump. The digital level relay will measure consumption and if the value is above or below the nominal value, the relay will turn off the electric pump due to thermal trip or lack of water.
4. If the pump motor consumption remains within the rated value, the pump will operate normally.
5. If the control circuit breaker is in the manual position (), the pump starts regardless of the command state of contact pair P11 and P12.
6. In the event of a thermal relay trip (overload) the pump shuts down and the thermal trip information appears on the relay display.
