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EXCAVATOR OPERATION
AUTO IDLE (AI) OPERATION To avoid personal injury: A Stop the engine before removing/changing the equipment. A Release pressure in the hydraulic system before removing/changing the equipment. (See "HOW TO RELEASE PRESSURE TRAPPED IN THE HYDRAULIC SYSTEM".) A Position the selection valve to the correct position (either 1-way or 2-way circuit selection) before mounting the equipment. A Always select the correct valve position before mounting the equipment (1-way or 2-way circuit selection) to avoid sudden movement of the equipment.
1. Throttle Potentiometer With this potentiometer the operator can adjust the engine speed when the Auto Idle control is activated. 2. Switch for Auto Idle (AI) Control With this switch the Auto Idle control is turned on or off. The Auto Idle control allows the engine speed to drop to idle speed when the control levers are left in neutral for longer than four seconds. If the control is activated, the engine speed rises immediately to the preset rpm. If the Auto Idle is not activated the throttle potentiometer can be utilized to control engine speed in a similar way to a conventional throttle control lever.
A Leaving the selection valve to 1-way circuit selection and attaching 2-way circuit equipment may cause the equipment to move (drop) suddenly due to its own weight, as the tank line remains open, even with the engine off.
(1) Throttle potentiometer (2) Switch for Auto Idle control (3) Lamp for Auto Idle control
A It is possible that the Auto Idle may not function until hydraulic oil warms up in the cold weather. Therefore it is not recommended that the Auto Idle be activated until the machine is completely warmed up. A Before operating the control lever, check the Auto Idle Indicator Lamp. A When operating in confined spaces or when loading onto a vehicle, turn the Auto Idle switch off (Light off). This is to prevent unwanted engine speed increases when control levers are activated. A The Auto Idle control, when selected by a switch, provides the operator with a way to control engine speed without moving the Throttle Potentiometer, simply by not activating any control levers for about four seconds after stopping work, and then to simply restore a preset (by potentiometer) engine speed by activating any control lever to return to work. A The purpose of the system is to reduce fuel consumption, noise and operator fatigue.
