Controller for underwater pump
First Claim
1. A controller for an underwater pump which operates to start and stop said pump in response to a water level detected by a water level sensor, characterized in that said controller is constituted as a separate component which comprises a watertight case, a first connector provided at a first predetermined position of said case for installation on a power connector provided on a pump casing, a second connector provided at a second predetermined position on said case, on which an external power connector is to be installed, electronic parts and units constituting a control circuit installed in said case for starting and stopping said pump in response to signals output from said water level detection sensor, and a cable watertightly derived from said case externally for electrically connecting said control circuit and said water level sensor, said controller removably installed on said pump, whereby operation of said pump may be changed from that of an automatic pump mode with said controller installed to that of a non-automatic pump mode when said controller is not installed, or vice versa.
1 Assignment
0 Petitions
Accused Products
Abstract
A controller for an underwater pump which operates to start and stop the pump in response to a water level detected by a water level sensor is disclosed. The controller (10) is constituted as a separate component which comprises a watertight case (11), a first connector (13) provided at a first predetermined position of the case for installation on a power connector (12) provided at a pump casing (51), a second connector (14) provided at a second predetermined position on the case, on which an external power connector (15) is to be installed, electronic parts and units (18, 19, 20) constituting a control circuit installed in the case for starting and stopping the pump based on signals output from the water level detection sensor (S1, S2, S3), and a cable (22) watertightly derived from the case externally for electrically connecting the control circuit and the water level sensor. The pump may be operated in an automatic operation mode. However, by removing the controller from the pump casing and the external power connector and by directly connecting the external power connector to the power connector of the pump, the pump may be converted to a non-automatic operation mode.
105 Citations
9 Claims
- 1. A controller for an underwater pump which operates to start and stop said pump in response to a water level detected by a water level sensor, characterized in that said controller is constituted as a separate component which comprises a watertight case, a first connector provided at a first predetermined position of said case for installation on a power connector provided on a pump casing, a second connector provided at a second predetermined position on said case, on which an external power connector is to be installed, electronic parts and units constituting a control circuit installed in said case for starting and stopping said pump in response to signals output from said water level detection sensor, and a cable watertightly derived from said case externally for electrically connecting said control circuit and said water level sensor, said controller removably installed on said pump, whereby operation of said pump may be changed from that of an automatic pump mode with said controller installed to that of a non-automatic pump mode when said controller is not installed, or vice versa.
Specification