Q. "Okay, so all I have to do is plug in the electronic float switch and forget about it, right?"
A. Make sure to follow all of the manufacturer's instructions and directions by performing the proper maintenance and inspections to ensure that you are fully protected from flooding -this is ever-so-important with (man-made) safety devices as they will eventually fail.
Q. "Can I cut off the plug from the end of the Little Giant RS-5LL remote switch so that I can hardwire it into my system?"
A. No; not only would that void the manufacturer's warranty, removal of the plug will not allow the RS-5LL switch to function properly (if at all). Pressure from rising water pushes against a diaphragm inside the RS-5LL switch, which is how the switch turns off. For the diaphragm to move, the air above the membrane must be expelled; to allow this air to escape, a small vent tube runs from the top of the switch and along the cord, exiting at the plug. If the plug is removed and the switch is hardwired, the air tube would essentially be "plugged off"; the air from the area above the diaphragm membrane could not vent, which means water pressure would be unable to move the membrane to close the switch.
Q. "How does the sensor work for the Electronic Sump Pump Switch?"
A. The sensor senses water by measuring the resistance between the sensor and the grounded pump motor. When the water is below the sensor the resistance is very high (Figure 1), but when water reaches the tip of the sensor, the resistance is relatively low (Figure 2). When the sensor detects the low resistance from the water, it triggers the control module to turn the pump on. Once the water drops below the sensor, it has no affect on the control of the pump until the next cycle.
Q. "How does the Electronic Sewage Pump Switch sensor work?"
A. The sensor detects water by measuring the resistance between the sensor and the grounded pump motor. When water is below the sensor the resistance is very high (Figure 1), but when water reaches the tip of the sensor, the resistance is much lower (Figure 2). When the sensor detects the low resistance from the water, it triggers the control module to turn the pump on. Once the water drops below the sensor, it has no affect on the control of the pump until the next cycle.
Please note: The sensor should not be strapped directly to the discharge pipe inside the sump basin or pit. It should be strapped to the discharge pipe a few inches ABOVE the cover or lid of the sump basin. The sensor can be put through the electrical cord access hole. The tip of the sensor should be lowered so it will be below the level of the inlet pipe. The sensor tip should NOT touch anything else inside the basin or pit, like the discharge pipe, the wall of the basin or pit or the pump or pump cords. The pump cords can be zip tied to the discharge pipe to keep them away from the sensor tip. If the sensor touches anything else in the basin or pit it will sense a low resistance and trigger the pump to turn on without cause to do so.
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