How does a dual level pump control relay work?
How does a dual level pump control relay work?
It requires the use of two float switches, one for high level and one for low level. Upon application of power to the input terminals, the relay will be de-energized. As the liquid rises, the low float will close but the relay will remain de-energized.
What do you need to know about NEMA relays?
It has hook up options for pump up or pump down applications. This relay is housed in a wall mount Nema 4/4x enclosure, comes with a 6ft power cord, and has two openings in the bottom. It requires the use of two float switches, one for high level and one for low level.
What happens to the relay when the level drops?
When the liquid drops and the upper float opens the relay remains energized. As the level continues to fall and the low float opens, the output contacts immediately revert to their original de-energized position.
What happens to the relay as the liquid rises?
As the liquid rises, the low float will close but the relay will remain energized. As the liquid continues to rise and the upper float then closes, the output contact transfers to the de-energized position. When the liquid drops and the upper float opens the relay remains de-energized.
How does the relay work on a pump?
One set of relay contacts connects the pump to the supply and the other maintains the relay on-state, while the level falls towards the bottom switch. The relay will be held in the energised state until the bottom switch opens, so releasing the relay and cutting off the supply to the pump.
How did I replace the fuel pump relay?
Hopped on the internet and found a post about replacing the fuel pump relay, so I went out and swapped a similar relay into the fuel pump relay and boom, it started right up. It ran like normal for about 48 hours, but then, very luckily, it started sputtering as she pulled into the driveway. Wasn’t the relay this time.
How does rear tank transfer pump two tank system work?
There have been a few old threads about this, but since it happen to me a few weeks back I thought I would bring this back up for the next guy. For those of us with the two tank arrangement, there is a transfer pump that moves fuel from the rear tank into the front tank as the front tank drops level.
How does the fuel pump control module work?
This is what I would expect, the wierd thing is that coming off the fuel pump control module I get 12v on the positive (blue wire) side and 1.4v on the negative side (red wire), yet the pump isn’t running. This makes no sense to me unless that’s some sort of default condition that the pump understands?
