The Wireless Kill Switch (WKS) remote has 6 push buttons and one display screen that indicates button functions and displays messages, alarms, warnings, and other information. The controls do the following:

• Red/E-stop button turns the device off and operates the emergency stop.
• The buttons to the left and right of the display match the device, control remote and machine functions, and let users access configuration mode.

Operation modes

The Wireless Kill Switch (WKS) has three operating modes that correspond to the primary working orientations of a high-pressure water dig wand:

• Vertical: This mode measures the deviation from the upright/vertical position and is used when the wand is operated predominantly in an upright position for digging trenches or potholing.
• Horizontal: This mode measures the deviation from the flat/horizontal position and used for tunnelling and other jobs where water needs to be directed sideways.
• Slope: This mode is used when you hold the wand at a set sloped angle (typically 45 degrees).

The parameters of these modes can be configured to change the angle and acceleration settings where the WKS will shut automatically shut off the water.

The current working mode shows along the top of the WKS screen. To change modes, press the two top buttons on the remote to toggle between Vertical, Horizontal, or Slope. 

After selecting the mode, there is a five second pause before the remote starts sensing its new angle so that you have time to reposition the wand. You can change modes without stopping the flow of water.

Gyroscopic sensor and accelerometer

The WKS contains a gyroscopic sensor and accelerometer:

• The gyroscopic sensor measures the angular velocity of the device and which direction the device is rotating. The gyroscopic sensor uses a vibrating weight to detect the angle.
• The accelerometer detects the linear velocity and gravitational pull using spring loaded weights. The movement of the weights gives the G-force measurement.

These sensors in the WKS detect when the dig wand moves to an angle or at an acceleration outside of the configured parameters and automatically cut off the flow of water. The device cuts off water in a rapid and orderly way to ensure the safety of the operator and not damage your system.

Drop detected

When the Wireless Kill Switch (WKS) detects a drop, it shows a DROP DETECTED screen.

The remote control receiver shuts off the water output (if applicable) and blocks the output from activation until you reset the DROP DETECTED warning. To clear the DROP DETECTED warning, hold the two buttons indicated on the screen (bottom left and bottom right) until the warning clears.

Other warnings

The WKS remote constantly monitors itself to ensure its inertial sensors are working properly. If the remote detects a problem, it declares a drop event. There are also some warning screens that show on the screen of the HHT, if applicable to your machine type.