Starting and running Running Check instruments and warning lamps at regular intervals. Engine speed range Emission control The system provides a warning if there are faults on the SCR system or if the level of reductant in the reductant tank is too low. In the case of some faults, for example if doser cooling is not work- ing, the torque is reduced. Reaction at low reductant level 319 562 Symbol for low reductant level 1. Applies only to engines that are certified according to Tier 4. The engine resumes normal torque after reduct- ant has been filled to a level of at least 20%. OPM 100 en-GB 26 © Scania CV AB 2015, Sweden 600-750 rpm Low idling.
Engine idling is controlled by the engine management system. Low idling up to 2,100 rpm Engine operating speed range. Controlled by the engine management sys- tem. 2,100-2,600 rpm Unsuitable operating speed, but a slightly higher engine speed than the nor- mal maximum operating speed may occur when load is low or negative. 2,600-3,000 rpm Prohibited engine speed. Reductant level Warning lamp Torque reduction1 20% Constant light 10% Flashing Torque is reduced by 1% per minute to 70% of the highest torque 0% Flashing rap- idly Torque is reduced to 0% (low idling) within 2-10 minutes