cooler water pump DB series submersible water pump with CE and Rohs certificate.Use in the following field:Aquarium , cooler water pump POWER CONSUMPTION(W)25WFLOW RATE ... ,When the pump can not work:a, please check the electrocircuit b, not any lees at the input. c, check the ... rotor Attention1, Power off before use2, Use in the water 3, Don't catch the pump by cable4, Pump work water ...