OPERATION 3.9 STARTING THE ENGINES Messages displayed with hydraulic oil too cold: Fault No. 842: Hydraulic oil far below operating temp. Wait for warm-up phase! Help: The machine was taken into operation although the start viscosity was not attained. - Preheat hydraulic oil! Information No. 1320: # Hydraulic oil not at operating temp.! Operate with reduced power!
(Main pump delivery 50% of total capacity) The Shovel is equipped with a ”Ѕ Qmax control circuit for cold oil” which limits the main pumps oil delivery to approximately 50% of the total capacity as long as the oil temperature has not reached the minimum operating temperature shown in column ”2” of the Viscosity and Temperature Chart on page 220. The pumps will move to maximum delivery position and the mes- sage will disappear, as soon as the minimum operating tempera- ture of the hydraulic oil is obtained. Information No. 1386: # Hydraulic oil below operating temperature! Pre-heat hydraulic oil or warm up at low idle speed and reduced power.
During the warm-up period, complete several operating cycles of all hydraulic movements without load. Avoid operation against limit stops. (high pressure build up). Work can be started when the minimum operating temperature shown in column ”2” of the viscosity chart is obtained. 219