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Introduction

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Rice Lake Weighing Systems

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5

1.5 Grounding Straps

The grounding straps connected to the ELS weigh stands are used to ground the conveyor to the floor. If the system is not

properly grounded, static can build up and cause damage to the load cells once the static discharges. The grounding straps

protect the load cells by providing an alternate path for the static discharge to travel.
The grounding straps are located on each load cell assembly and connect the load cell top plate to the mounting plate.

Figure 1-2. Grounding Straps

The grounding straps must be connected to the weigh stands at all times.

Grounding Strap

IMPORTANT

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Содержание ELS Series

Страница 1: ...ELS Series Elevated Load Cell Stands Installation Manual PN 213042 Rev A April 27 2022 ...

Страница 2: ... respective companies All information contained within this publication is to the best of our knowledge complete and accurate at the time of publication Rice Lake Weighing Systems reserves the right to make changes to the technology features specifications and design of the equipment without notice The most current version of this publication software firmware and all other product updates can be ...

Страница 3: ... at www ricelake com training or obtained by calling 715 234 9171 and asking for the training department Revision History This section tracks and describes the current and previous manual revisions for awareness of major updates and when the updates took place Revision Date Description A April 27 2022 Initial manual release with the launch of the product Table i Revision Letter History ...

Страница 4: ...idth Adjustment 6 2 5 Height Adjustment 7 2 6 Support Brace Installation 8 2 6 1 Conveyor Applications Greater Than 3 Feet 8 2 6 2 Conveyor Applications Less Than 3 Feet 10 2 7 Conveyor Installation 11 2 8 Weigh Stand Installation to the Floor 12 2 9 Overload Bolt Adjustment 13 2 10 Load Cell Guard Plate 13 2 11 Junction Box Installation 14 2 12 Junction Box Wiring 15 2 12 1 Junction Box Expansion...

Страница 5: ...removed Indicates a potentially hazardous situation that if not avoided could result in minor or moderate injury Indicates information about procedures that if not observed could result in damage to equipment or corruption to and loss of data General Safety Do not operate or work on this equipment unless this manual has been read and all instructions are understood Failure to follow the instructio...

Страница 6: ... Small 22 in 55 88 cm 28 in 71 12 cm Large 29 in 73 66 cm 36 in 91 44 cm B All 30 in 76 20 cm 66 in 167 64 cm C Small 17 in 43 18 cm 24 in 60 96 cm Medium 25 in 63 50 cm 36 in 91 44 cm Large 37 in 93 98 cm 54 in 137 16 cm D Small 22 in 55 88 cm 28 in 71 12 cm Medium 29 in 73 66 cm 40 in 101 60 cm Large 41 in 104 14 cm 58 in 147 32 cm Table 1 1 Product Dimensions A B D C ...

Страница 7: ...250 Kit 29 36 in Height 37 54 in Width Table 1 2 ELS 250 Mild Steel Kits PN Description 212661 ELS 500 Kit 23 28 in Height 18 24 in Width 212662 ELS 500 Kit 29 36 in Height 18 24 in Width 212663 ELS 500 Kit 23 28 in Height 25 36 in Width 212665 ELS 500 Kit 29 36 in Height 25 36 in Width 212953 ELS 500 Kit 23 28 in Height 37 54 in Width 212954 ELS 500 Kit 29 36 in Height 37 54 in Width Table 1 3 EL...

Страница 8: ...LS 250 Stainless Steel Kits PN Description 213292 ELS 500 Kit 23 28 in Height 18 24 in Width 213293 ELS 500 Kit 29 36 in Height 18 24 in Width 213294 ELS 500 Kit 23 28 in Height 25 36 in Width 213295 ELS 500 Kit 29 36 in Height 25 36 in Width 213296 ELS 500 Kit 23 28 in Height 37 54 in Width 213297 ELS 500 Kit 29 36 in Height 37 54 in Width Table 1 6 ELS 500 Stainless Steel Kits PN Description 213...

Страница 9: ... can build up and cause damage to the load cells once the static discharges The grounding straps protect the load cells by providing an alternate path for the static discharge to travel The grounding straps are located on each load cell assembly and connect the load cell top plate to the mounting plate Figure 1 2 Grounding Straps The grounding straps must be connected to the weigh stands at all ti...

Страница 10: ... weigh stands 1 Remove the existing conveyor if needed 2 Remove the existing conveyor stands that will be replaced with the ELS weigh stands if needed 3 Clean the site thoroughly to ensure the area is free of any debris 2 3 Unpacking Immediately after unpacking visually inspect the ELS weigh stands to ensure all components are included and undamaged If any parts are damaged or missing notify Rice ...

Страница 11: ... adjusted within an inch less than the needed height of the weigh stands and the existing conveyor The provided shims allow the weigh stands to be adjusted to the needed height within a 1 16 of an inch See Section 8 on page 10 for shim adjustment 1 Loosen the load cell cable mounting clips 2 Measure the height of the old conveyor legs that the weigh stands are replacing 3 Remove the four 3 8 16 x ...

Страница 12: ...bing and an inner adjustable tubing The load cells must be positioned to the same orientation when installing the support braces on the weigh stands If the distance between each weigh stand is less than 3 ft only the outer support brace is needed for the installation of the support brace Section 2 6 2 on page 10 2 6 1 Conveyor Applications Greater Than 3 Feet 1 Measure the length of the conveyor f...

Страница 13: ...djust the length for the weigh stands and support braces to the measured length 6 See Section 2 6 on page 8 to install the conveyor at this time 7 Mark drill hole locations on the inner adjustable tubing using provided holes from outer adjustable tubing as a guide 8 Drill 7 16 inch holes through the inner adjustable tubing 9 Install two 3 8 16 x 2 1 2 inch bolts provided from the parts kit through...

Страница 14: ... other sides of the support braces on the other weigh stand 4 See Section 2 6 on page 8 to install the conveyor at this time The load cells must be in the same orientation before installing the support braces on the weigh stands 5 Mark the locations where the bolts will be installed to the other weigh stand 6 Drill a 7 16 inch through the top and bottom of the support braces 7 Align the drilled ho...

Страница 15: ...nches inside the ends of the conveyor to prevent load cell damage Figure 2 7 Conveyor Placement onto Weigh Stands 2 Align the existing conveyor holes to the bolt holes or slots of the mounting plate Two bolts must be used per mounting plate utilizing one option from each end of the mounting plate 3 Drill holes through the conveyor channel if needed to have two attachment points per mounting plate ...

Страница 16: ...led onto the floor 5 Drill holes through the concrete anchor holes large enough to allow the concrete anchors to be installed properly 6 Check that the drilled holes for the concrete anchors are free of debris Use compressed air to blow out holes as needed 7 Install the concrete anchors through the weigh stand bases and into the drilled holes Figure 2 10 Securing ELS Weigh Stands 8 Hand tighten th...

Страница 17: ...rclockwise allows the cell to flex when weight is added yet still be close enough to provide overload protection 2 10 Load Cell Guard Plate The load cell guards for the ELS Series weigh stands come shipped with two screws installed on the top and bottom sides of the load cell guard plate protecting the load cell during shipment Once the screws are removed the nylon washers from the bottom screws w...

Страница 18: ...ll mounting clips along the width assembly of the ELS Weigh Stand that will obstruct installation on the junction box 2 Remove the load cell cable mounting clips if needed Figure 2 13 Load Cell Cable Mounting Clip Removal 3 Install the junction box onto the ELS weigh stand width assembly Figure 2 14 Junction Box Installation ...

Страница 19: ...he wires into the appropriate wire openings for each load cell Table 2 1 4 Release the screwdriver to allow the spring loaded gate to close and lock the wire in place Do not cut load cell cables Figure 2 15 Junction Box Board Table 2 1 Cable Color Coding For junction box trimming refer to TUFFSeal Installation Manual PN 184804 Cable Code Designated Color Excitation Red Excitation Black Signal Gree...

Страница 20: ...ell cable mounting clamps 2 12 1 Junction Box Expansion It is possible to use this junction box with other combinations Use the expansion port on the main board to connect multiple junction boxes in a series to accommodate more than two ELS weigh stands Contact Rice Lake Weighing Systems for additional details on applications involving more than two weigh stands Figure 2 17 Junction Box Expansion ...

Страница 21: ...opriate wires into the wire openings 6 Release the screwdriver to allow the spring loaded gate to close and lock the wires in place 2 12 3 Liquid Protection If cables could be exposed to water or other liquids bend a short downward loop in all cables near the cord grips so any fluids draining down the cables will drip off before reaching the junction box Figure 2 20 Drip Loop Cable All load cell c...

Страница 22: ...ds 18 Visit our website www RiceLake com 2 13 Replacement Parts Figure 2 21 Replacement Parts Diagram 1 10 9 8 7 6 3 4 5 2 11 12 14 13 15 18 17 16 20 19 28 27 26 21 25 24 23 22 21 29 31 30 33 23 21 32 36 35 34 37 27 28 38 10 ...

Страница 23: ...lain No 8 Type A Steel Zinc Plated Id 0 183 0 196 Od 0 433 0 453 Thickness 0 036 0 065 21 63574 Washer Split Lock No 8 Sst 22 126991 Nut Hex 1 2 13 Grade 5 Zinc Plated 23 126981 Screw Cap 8 32 X 1 2 Socket Button Head Black Oxide 24 201664 Cable Clamp 3 16 Inch Nylon Black 25 14857 Screw Mach 8 32 X 1 4 Phillips Pan Head Sst 26 132684 Nut Hex 3 8 16 Gr5 Zinc 27 15159 Washer Split Lock 3 8 Steel Zi...

Страница 24: ...ap 14in Tinned Copper Braided 20 25884 Washer Plain No 8 Type A Steel Zinc Plated Id 0 183 0 196 Od 0 433 0 453 Thickness 0 036 0 065 21 63574 Washer Split Lock No 8 Sst 22 126991 Nut Hex 1 2 13 Grade 5 Zinc Plated 23 126981 Screw Cap 8 32 X 1 2 Socket Button Head Black Oxide 24 201664 Cable Clamp 3 16 Inch Nylon Black 25 14857 Screw Mach 8 32 X 1 4 Phillips Pan Head Sst 26 132684 Nut Hex 3 8 16 G...

Страница 25: ... cells Steam will not damage the load cells but the elevated temperatures may cause incorrect readings until the unit cools to room temperature 3 1 1 Load Cell Bearing Lubrication There is a hole located on the bearing block in the load cell assembly that leads to a bearing that allows for movement of the assembly The bearing needs to be lubricated periodically in order to maintain proper movement...

Страница 26: ...clips 3 Open the junction box and disconnect defective load cell cable 4 Remove the load cell guard plate 5 Remove the four 5 16 18 x 3 4 inch bolts that connect the bearing block to the conveyor mounting plate Figure 3 2 Conveyor Mounting Plate Removal 6 Remove the two 1 2 20 x 2 1 2 inch bolts that connect the load cell load cell spacer and the load cell mount plate Figure 3 3 Load Cell Removal ...

Страница 27: ...1 2 inch bolts that connect to the load cell need to be torqued to 75 ft lb Apply a medium strength thread locker to the 1 2 20 x 2 1 2 inch bolts that connect to the load cell 12 Put the load cell cable through the load cell cable mounting clips and into the junction box See Section 2 12 on page 15 for junction box wiring 13 Tighten the load cell cable mounting clamps 14 Adjust and tighten the ov...

Страница 28: ...4 Visit our website www RiceLake com 4 0 Specifications Load cell Four RL32018 single ended beam 250 lb capacity 500 lb capacity 1 000 lb capacity Cable length 25 ft Warranty Two year limited Approvals Load cells are FM approved ...

Страница 29: ......

Страница 30: ...WI 54868 USA U S 800 472 6703 Canada Mexico 800 321 6703 International 715 234 9171 Europe 31 0 26 472 1319 Rice Lake Weighing Systems Specifications subject to change without notice www ricelake com PN 213042 Rev A April 27 2022 ...

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