OPERATING INSTRUCTIONS RH 40 F Operation Demand control / Zero-flow regulation
Electrical system The electrical system operates on 24 volts.
In the fine-control range, swivelling of the hydraulic pumps, and thus the variation of oil flow, are proportional to control lever and pedal valve travel. This means that during the work, the pumps supply only as much hydraulic oil as required to perform the working movement. In the neutral position of the control levers, the pumps are automatically swivelled to zeroflow. These special features offer the following advantages: !
reduced fuel consumption,
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minimum power losses,
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reduced temperature of the hydraulic oil,
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greater service life of hydraulic pumps and diesel engines.
Automatic engine speed reduction If the control pedals and control levers and thus the Servovalves are not actuated for a period of 10 seconds or more (programable), the speed of the engines is automatically reduced to idling. Thisfunction is a further contribution to fuel economy.
BA RH40F(3 668 020.01)-EN
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