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  Float Switches

 • Sump Pump
 • Utility Pump
 • Sewage Pump
 • Hi-Lo Pump Switch
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Hi-Lo Pump ControllerSTAK 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, or with utility pumps that are placed on basement floors, in window wells, etc. They are particularly useful when you want to control the exact level where the pump turns on, and the exact level where the pump turns off. Unlike other "dual-float" switches that run for a fixed amount of time each cycle, regardless of the amount of water or size of pit, or "solid-state" switches that have fixed on/off ranges that cycle the pump too often and wear it out, the HC6000 is fully adjustable, letting you set the on/off range anywhere from 1/2" to 12 feet! 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.

And if you are looking for a switch to work in an elevator pit or transformer vault, the HC6000 is a perfect choice. Because of the unique way its sensors work, the HC6000 automatically differentiates between water and oil, so it will pump out the water but not the oil! The HC6000 can be a key element in an ASME A17.1 compliant system.


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 positioned in 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. The HC6000 works great in salt water, or water with very high mineral content, but there are special installation requirements for these types of applications. Refer to the Installation with Water Softener instructions for details.


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. Note that the alarms can be disabled by following the steps below:

  1. Unplug pump from control module.
  2. Lift top sensor out of water.
  3. Unplug control module from 120 VAC outlet. Wait 10 seconds.
  4. Plug control module back into outlet. Wait 10 seconds.
  5. Unplug control module from 120 VAC outlet. Wait 10 seconds.
  6. Plug control module back into outlet. Wait 10 seconds.
  7. Plug pump back into control module
  8. Place top sensor back into water
Possible Causes
2 Beeps Can't turn pump on
  • Pump not plugged in
  • Float piggy-back plug not disconnected
  • Float switch not secured in "on" position (internally wired float switch)
3 Beeps High Level Alarm
  • Pump can't keep up with water coming in
  • Discharge plumbing blocked
  • Debris on sensor
Steady Slow Beep Motor current above normal
  • High motor current
Steady Fast Beep Motor current too high
  • Very high motor current
Steady Red LED Pump off, no water detected  
Flashing Red LED Pump off, lower sensor detecting water  
Steady Green LED Pump on, water detected by both sensors
  •  If this condition exists for more than 30 seconds the high-level alarm will be sounded
Flashing Green LED Pump on, water below upper sensor  

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120 VAC
Minimum Current
Maximum Current
14 Amps
Minimum Run Time
Maximum Run Time
Sensor Cable Length
12 ft
Indoor Use Only

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