OPERATION 3.2 CONSTRUCTION OF THE SHOVEL Emergency Engine Shutdown System actuated from Ground Man (Special Equipment) Legend for illust. Z25198 (1) Actuating chains for emergency shut down of both engines. To stop the engines, pull down one of the chains (1). (2) Actuating chain for hydraulically operated service arm. (3) ECS display on the instrument panel in the Opera- tor’s cab. When one of the chains (1) is being pulled down from ground man, both engines will be stopped and the following message will be displayed on the ECS screen (3): Engine shut down has been actuated from ground man. Never stop the engines from a full load except in case of emergency.
If a hot engine is shut down without previous idling period of three to five minutes, the temperature in certain engine parts rising sharply after the cooling system ceases to function. The resulting thermal stress, especially in the turbochargers, may cause serious damage. Operator Warning System (Special Equipment) This system is used to inform the Operator that someone wants to enter the Shovel or to draw the Operator’s attention to special cir- cumstances requiring his action. Legend for illust. (Z25198): (1) Actuating chains for pull switches of the Operator warning system (2) Actuating chain for hydraulically operated service arm.
(3) ECS display on the instrument panel in the Opera- tor’s cab. When one of the chains (1) is being pulled down the following message will be displayed on the ECS screen (3): Warning: Pull switch from ground man actuated. As soon as a chain (1) is being pulled down, the above message will be displayed informing the Operator that someone wants his attention. In such a case, the Operator should stop work until he has received the ground man’s request. 53 CAUTION CAUTION