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The emergency brakes my engage, causing a wheel lockup and loss of vehicle control. In the instance that air pressure is low and remaining air volume may not be sufficient for repeated braking. #International control description symbols driverThis light indicates an electrical or mechanical fault along with a message in the Driver Information Display (DID).Īction to take: If the CHECK light comes on, acknowledge any other warnings lights an display messages. This symbol may illuminate alongside other symbols and a message in the Driver Information Display (DID).Īction to take: Failure to stop as soon as possible may result in the engine shutting down.ĭescription: The CHECK warning light symbol comes on when there’s a specified fault that the vehicle operator should be made aware of. If the engine is on, a buzzer will also sound. (5) To define the Y function on a diagram, add the specific symbol of the relay or convert to a square of 6 mm on the side of the graphical sign of the instrument (in the north-east position).Description: On Volvo Trucks, the illumination of the red STOP triangle containing an exclamation mark indicates a serious fault. (4) Very low or minimum is indicated with LL (3) Very high or maximum is indicated with HH (2) Glass instruments that allow the visualization of process data For example C – Conductivity D – Density etc. ![]() (1) It must be chosen uniquely for each project. – Table 4 identifying the safety conditions of the valves and actuatorsĪt the end will also be reported the literal and graphic symbols of the power supplies and signals of the instrumentation. – Table 3 the graphic identification of the actuators – Table 2 the graphic identification of the valves – Table 1 identifying the function of the instruments or devices Graphical representation of a temperature recorder controller of the 101A loop, suitable for control room mounting If an instrument has a circumscribed square means that it is an integrated instrument as a function in a DCS (Distributed Control System) or PLC (Programmable Logic Controller).
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