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f+h Intralogistics 2/2015

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f+h Intralogistics 2/2015

INDUSTRIAL TRUCKS I

INDUSTRIAL TRUCKS I FORKLIFT TEST Practical test for the Linde E25 electric forklift truck with new operator assistance system Linde claims the E25 electric forklift truck has become more economical due to various optimizations. Safety Pilot, the Linde assistance system, has been available since spring 2014 and our test forklift is equipped with it. The test is designed to show what effect the system has on working with the forklift truck. Overview of the test results Manufacturer/type Linde/E25 Speed in km/h with a load of 1,600 kg Acceleration in seconds over 27 m Lifting speed in cm/s with a load of 1,600 kg Palette turnover per 8 hours Test consumption [kWh] Source: Andersom Testing/f+h Driving mode Performance Driving mode Efficiency Driving mode Economy 18 7,5 51,48 326 7,51 (18,4 kWh/100 pallets) 17,7 8,5 51,48 317 6,59 (16,6 kWh/100 pallets) 15,21 9,3 51,48 313 6,20 (15,8 kWh/100 pallets) 1) 16,5 8,48 46,57 317 8,04 (20,3 kWh/100 pallets) 1) Average value of the previously tested forklifts in this segment 20 f+h Intralogistics 2/2015

FORKLIFT TEST I INDUSTRIAL TRUCKS About three years ago we tested the Linde E25 electric four-wheel forklift truck, which has undergone some changes since then. That and the possibility of equipping the enhanced E25 with Linde Safety Pilot, the optional operator assistance system, were reason enough for us to take a closer look at the interaction between the truck and the assistance system. Just as in 2011, our current test machine is the short and low version of the E25. This version has a load center of 500 mm and is suitable for holding batteries up to max. 500 Ah. Even longer versions of the E25 with a load center of 600 mm are available for batteries up to 775 Ah. The test trucks from those two years may have the same chassis size, but there are also significant differences between them. Instead of a triplex masts with a lift height of 4,700 mm, the current test machine is fitted with a duplex mast (lift height: 4,530 mm) without free lift. This offers the operator a viewing window that is 70 mm wider (Image 01). Travel direction is now controlled by a dual-pedal system instead of a lever. The beige non-marking tires have now given way to black SC15 tires. Both types come from Continental and have the same size. The design of the current test truck features an all-steel cab. Because the cab design increases the overall weight of the forklift, and non-marking tires regularly achieve better values in our tests, somewhat higher energy consumption could be expected for the new E25. By contrast, Linde promises lower energy consumption as well as various optimizations based on the control software. Our measurements showed that the consumption of the previous model corresponds very much to the current one if the factors listed above are taken into consideration. 01 Visibility through the mast was increased by 70 mm compared to the predecessor model Three selectable operating modes In terms of operation, our test machine handles just as easily and pleasantly as its predecessor in the 2011 test. Steering response is very direct with the combination axle, as it was previously. Anyone who is not familiar with this steering system will certainly be surprised to encounter the maximum steering angle for the first time. However, a short time is enough to become accustomed to the otherwise normal steering. As in 2011, we are running the truck in the three performance levels Economy, Efficiency und Performance. In the old model, the performance level setting still had to be made by the customer service technician. In the new model, however, we can make this setting ourselves with the Linde Safety Pilot. We did not record any differences between the old and new model in any of the three operating modes in terms of balance between acceleration capacity and travel speed. The 2011 test truck was actually rated 02 Our test forklift is equipped with an integrated battery charger and battery ventilation somewhat better than its successor in its overall driving response. Compared to the performance of forklift trucks previously measured by us in the same classification, the E25 achieved completely acceptable values. While its productivity was good as previously, consumption in Efficiency mode is about 18 % below the average. In Performance we can make five percent more pallet movements than in Efficiency mode, but that also “costs” about 15 percent more energy. Productivity in Economy mode is nearly identical compared to Efficiency mode, yet we save six percent on energy. In Efficiency mode the installed 500-Ah battery is just sufficient for one day’s operation of a forklift trunk that is not especially intensive. The longer or higher version of Practical operating period in hours:minutes (with max. battery size incl. regeneration) 09:54 11:18 12:00 08:04 03 The driver operates the assistance system with the two function keys in the arm rest

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