System for washing surfaces near e.g. railway track by high pressure water jet, has sensor connected to disconnecting device so as to be communicated with device in direction of water jet

摘要

The system has a washing gun (1) with an inclination sensor i.e. inclination electric contact part (6), for determining direction of water jet. A disconnecting device is provided with a safety relay (8) and a shut-off solenoid valve to disconnect the supply of the pressurized water from a pressurized water source i.e. water tank, to the gun. The sensor is connected to the device so as to be communicated with the device in the direction of the water jet such that the device disconnects the water supply to the gun when the water jet is directed toward a non washing area.