Transcript
INDUSTRIAL WASHER 16-66kg / 35-150lb WITH WEIGHING SYSTEM Addition to Installation, maintenance and user's manual „508636“. Code: 526825 B Publication date: 4 Jan 2010
! WARNING ! NEVER CARRY LOAD CELLS BY THEIR CABLES!
! CAUTION! AVOID ELECTRIC WELDING NEAR THE LOAD CELLS!
! CAUTION! AN IMPACT MIGHT CAUSE PERMANENT DAMAGE TO THE LOAD CELL! AVOID UNEQUAL LOAD DISTRIBUTION BETWEEN THE LOAD CELLS WHEN PUTTING THE MACHINE DOWN.
! CAUTION! WHEN THE POWER OF THE MACHINE IS SWITCHED ON, THE SYSTEM NEEDS A 10-MINUTES WARM-UP TIME. THIS IS IMPORTANT WHEN THE POWER HAS BEEN OFF FOR MORE THAN FIVE MINUTES. IGNORING WARM-UP MIGHT RESULT IN A MAJOR ERROR IN WEIGHING.
Especially the following must be considered when using Weighing system (further as Optiload): – Tare (set zero weight) Optiload every time before loading by pressing the 0-button. – Do not place any object on the machine. – Do not place any object next to the machine in physical contact with the cabinet. – Do not remove any panel or part of the machine. – Do not lean against the machine.
1. INSTALLATION STEPS 1. 2. 3. 4. 5. 6.
Drill four holes to the floor according to the foundation plan Place the four anchor pads into the holes. Lift up the machine. Install the load cells. Check that all the feet are supporting the machine. Place the machine on the anchor pads carefully avoiding an impact. Note: an impact might cause permanent damage to the load cell. 7. Check that each load cell foot is stably in the hollow of the anchor pad. 8. Remove the transport braces. 9. Using water level, check that the base frame of the machine is level. 10. Using the service menu Æ load cell calibration, check that the machine load is equally shared between the load cells. 11. Adjust the height of the load cell feet to obtain an equal load sharing. Make sure the nuts are tightened against the foot after the adjustment. 12. Connect the water hoses to the machine. Make sure the water connection does not disturb weighing. 13. (Enclose the hygienic barrier) If welding is necessary, remove the load cells, or disconnect the load cell cable from the signal conditioningunit. Avoid a current path through the load cells.
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2. FOUNDATION Note: The floor/platform for the machine must be level! (Minor irregularities and pitch on the floor can be compensated by adjusting the feet of the load cells (see „5. FINE LEVELING THE MACHINE“). Each load cell can be adjusted 5mm). The machine is placed on four anchored pads. The machine itself is not fastened to the floor, but the pads are embedded into the holes drilled according to the foundation plan.
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Front view of the machine
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Rear view of the machine
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3. ASSEMBLING THE LOAD CELLS The load cells and the feet are transported unattached to prevent damage due to shock loads during transport. They are fixed to their places on the machine frame at the place of installation. The machine is lifted up and the components firmly fixed to their places.
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4. PLACING THE MACHINE ON THE PADS Check that all the feet are supporting the machine. Before you put the machine down to its place, ensure that the floor under the machine is in level and free of objects which might avoid proper function of load cells. The machine is carefully put down on the anchor pads avoiding an impact to the floor. – Check that the machine frame is level using a water level. – Check that each load cell foot is stably in the hollow of the anchor pad. – Remove the transport braces.
5. FINE LEVELING THE MACHINE For the machine stability and Optiload functionality it is important that each load cell shares an equal amount of the machine load. The output of each load cell can be seen in the Service menu Æ Toolbox Æ load cell calibration. The load cells are numbered as illustrated below. LOAD SIDE 1
2
4
3 UNLOAD SIDE
Load Cell Calibration Load Cell 1: Load Cell 2: Load Cell 3: Load Cell 4:
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228kg 228kg 228kg 228kg
25% 25% 25% 25%
[24-26] [24-26] [24-26] [24-26]
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Each load cell output (%) should be within the range given in brackets on the right side of the actual value. If the load cells are out of range, the load cell feet must be adjusted. Each load cell foot can be adjusted 5 mm. Adjusting a load cell foot: 1. Lifting the machine up 2. Loosening the nut 3. Turn load cell feet to appropriate position. 4. Tightening the nut 5. Putting the machine down 6. Verifying equal load sharing 7. Making sure the load cell outputs are in range after tightening the nut Note: Already a small adjustment of one foot might be very effective and change the load sharing significantly. Adjusting one foot affects to the load on each of the four load cells. Check the load sharing after first wash and always if there is a doubt of error.
6. CONNECTIONS AND THE HYGIENIC BARRIER Optiload is designed to weigh the amount of water in the wash tub and the load in the drum and share this data with the user. It should be noted, however, that the „scale“ is the whole machine. Therefore everything put in, on, or in any physical contact with the machine affects to the weighing result.
WATER CONNECTION For accurate weighing, the water connection must be flexible. The hoses should not pull or push the machine to any direction, or support it. The water inlet hoses (delivered with the washer) should not be bent excessively out of their free shape to maintain accurate weighing results. If the hoses are bent, the pressure changes in the water supply system tend to straighten the hose back to its free shape. The forces conduct to the weighing system leading to measurement errors and non-linearity! The strain must be relieved especially from the junction between the hose and the washing machine. It is recommended to use a hose of a suitable length, or elbow parts to lessen the deformation of the hose. The suitability of the water connections must be examined visually and by the wash computer information. If the inlet hoses seem to move/deform slowly during a steady state of the investigated machine, they might be pressing the machine. The weight output should be monitored from the display. If the value is running up and down during time of a steady state (the machine is not running and the inlet valves are closed), the water connection is not appropriate. The best accuracy is obtained if the weight does not seem to go up and down during a steady state. The magnitude of the possible forces disturbing the weighing system is dependent on the main water pressure and the changes in it due to the demand of the water in the system the washer is connected to. If the precise installation of the water hoses does not compensate the forces, regulating the water pressure is advised.
HYGIENIC BARRIER If the machine is placed into a hygienic barrier, the barrier must be closed with elastic material which doesn’t press the washer cabinet excessively, support it, or anyhow restrain the washer from moving free especially in vertical direction. It is recommended to use thin and soft rubber for closing the gap around the machine. The washer cabinet must be able to slide against the rubber freely when the machine is vibrating. Nothing should lean against the machine, and nothing should support the machine but the load cells. Wrong installation will lead into errors and non-linearity in weighing!
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7. COVERS
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Covers: drawing nr. 534337 2 2 2 2 5 6 7 8 9 10 11
526858 526859 526860 526861 526857 532124 526862 526863 534338 309595124612 534350
Profile Z2, 16 kg/36 lb, 26 kg/60 lb Profile Z2, 33 kg/75 lb Profile Z2, 44 kg/100 lb Profile Z2, 66 kg/145 lb Profile ZL2 corner left Profile ZL2 corner right Profile L2 Profile L2 Sealing profile Screw M6x12 Dowel
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