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How to test the Roll Over Sensor (ROS)

Important

In this article we explain the need for testing to determine the cause of the issue. Testing may involve changes to the installation or wiring. For your safety and accuracy, REDARC recommends engaging a REDNetwork member or a suitably qualified auto electrician - Find Your Local Installer

 

This information is applicable to the following products:

  • Roll Over Sensor (ROS1224)

 

Periodic Testing of the Roll Over Sensor (ROS).

The requirements of AS2809 state that the roll over switch must be tested periodically

For maximum safety, the REDARC ROS is designed to be tested by physically moving the ROS, simulating a vehicle rollover.

 

Roll Over Sensor components

 

Test Procedure

 

Ensure the vehicle is stationary and level with the engine off, park brake on, and isolation switch on (ROS must be powered for at least 15 seconds).

Do not test the ROS while the engine is running. This may cause damage to other electrical systems on the vehicle.

  1. Loosen the security screw and remove the pin.
  2. Tilt the ROS until the unit hits stop, wait 3 seconds and ensure that the batteries have been isolated. The ROS on-board LED should be off now. If the batteries do not isolate, refer to the troubleshooting guide in the Roll Over Sensor Instruction Manual.
  3. Return ROS to the correct flat position, return the pin and security screw. Reconnect the isolation switch by turning the handle per the switch instructions.
  4. Repeat steps 1 -3 except lift the other side. Upon completion, double check that the ROS is fastened properly.
     

Video Guide:

Please note, on the first test, the ROS was not tilted far enough to trigger the isolation switch. 

It is important to tilt the switch until it stops on the bracket when testing.

55 degrees is the angle the ROS needs to see prior to tripping.

View the video guide: REDARC ROS1224 Test Procedure - ROS Test Procedure

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