STAK Enterprises' HydroCheck Model HC6000 Hi-Lo Pump Switches are "electronic float" switches that are designed to work in sump pits that collect ground water from around the home's foundation. They are particularly useful when the sump pit is very large and may take more than 90 seconds to empty, or the water table is unusually high and it isn't practical to try and empty the pit every cycle. The real advantage of the Hi-Lo Pump Switch is that it lets you accurately set where the pump turns on, and where it turns off. And, unlike traditional float switches, the HydroCheck Hi-Lo Pump Switch has no moving parts that can seize up or get wedged between the pump and the wall of the pit and prevent the pump from running, or cause it to run continuously and burn out (See "Why Pumps Fail"). This makes the Hi-Lo Pump Switch many times more reliable than float switches and, because it's electronic, it has features that just aren't available in mechanical switches, such as the alarms that are described below. Whether replacing a switch that has already failed or just being pro-active and avoiding the damage that will be done when the switch finally does fail, installing a Model HC600 Hi-Lo Pump Switch just makes sense to prevent basement water damage. And it works with all brands of pumps, like Flotec, Simer, Wayne, Ace-in-the-Hole, Rigid, etc.

Simple Installation
The HydroCheck Model HC6000 Hi-Lo Pump Switch has two sensors and a control module. Installation is simple and, like all our products, doesn't require any changes to your plumbing. The control module is plugged into a 120 VAC outlet and the pump gets plugged directly into the control module. The sensors get lowered into the pit at the level where you want the pump to turn on and the level where you want to turn the pump off. The Model HC6000 switch doesn't care which sensor is the upper sensor, and which one is the lower sensor. It figures that out automatically so the operation of the pump is always correct. View the Installation Instructions for more information.

How the Hi-Lo Pump Switch Works
The setting of the sensors determine when the control module turns the pump on, and when it turns it off. Following the sequence below, the operation is as follows:

1. When the water is below both sensors, the pump is off
2. The pump is off when the water is above the lower sensor, but hasn't reached the upper sensor
3. When the water reaches the upper sensor, the pump is turned on
4. The pump stays on while the water is between the sensors
5. The pump is turned off when the water drops below the lower sensor

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Alarms and Indicators
The Hi-Lo Pump Switch has a number of built in alarms that warn of problems with the pump or discharge plumbing. The available alarms are described in the table below.

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