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104742

Benchmark

LP

Low-Profile Bench Scale

Installation Manual

TM

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Содержание Benchmark LP

Страница 1: ...104742 Benchmark LP Low Profile Bench Scale Installation Manual TM ...

Страница 2: ......

Страница 3: ...roubleshooting Guide 7 4 2 Periodic Maintenance 7 4 3 Load Cell Replacement 7 4 3 1 Load Cell Wiring to Summing Board 8 4 4 Replacement Load Cells 8 Benchmark LP Limited Warranty 9 2008 Rice Lake Weighing Systems All rights reserved Printed in the United States of America Specifications subject to change without notice April 2008 Technical training seminars are available through Rice Lake Weighing...

Страница 4: ...ii Benchmark LP Manual ...

Страница 5: ...ions Model Designations The model identification label is located on the side of the frame Include both model number and serial number when ordering replacement parts Electrical Grounding For systems where the scale is connected to a 115 VAC circuit the indicator must be directly connected to an earth ground with a ground interface cable of no more than 3Ω resistance throughout its length Load Cel...

Страница 6: ...n conduit will be necessary In operation the scale must be level within 1 4 inch Either choose a site where the floor is close to this standard to avoid excessive shimming or modify the floor at the chosen site to meet this standard 2 2 Unpacking and Assembly 1 Remove all packing material and inspect scale for visible damage caused during shipment 2 Remove the four overload stops on the underside ...

Страница 7: ...stainless steel platform 2 Remove lid in the center of the platform revealing the summing board coverplate 3 Remove security cables this will void NTEP Certification 4 Remove screws on the summing board coverplate and remove lid Wire Connections Remove the summing board cover and connect the wires to the INDICATOR terminal Figure 2 3 To connect the indicator wires to the appropriate connectors pus...

Страница 8: ...to facilitate future lifting of the scale for servicing or cleaning 1 When the interface cable is protected and in its final position complete connections to the indicator See indicator installation manual for wiring information 2 If necessary trim corners as described in Section 3 2 on page 5 3 Check all strain relief for tightness Figure 2 4 Homerun cable wired to summing board and secured with ...

Страница 9: ...25 of scale capacity for example 25 lbs for 100 lb models 250 lbs for 1000 lb models 3 With no weight on the scale zero the indicator 4 Turn all four potentiometers fully clockwise shaded areas of Figure 3 1 to increase the reading until a clicking sound is heard from each potentiometer This ensures the maximum signal from each load cell JP4 JP2 PT4 PT3 JP3 PT1 EXP PT2 JP1 1 CELL4 1 CELL1 1 CELL3 ...

Страница 10: ...on to be certain that everything is seated 1 Load the scale to near capacity two or three times 2 With no load on the scale place the indicator in its calibration mode and perform a zero calibration 3 Place test weights on the platform not exceeding the scale s full capacity If several weights are used they should be evenly distributed around the platform 4 Perform a span calibration ...

Страница 11: ...ance 4 2 Periodic Maintenance The space beneath the platform must be periodically cleaned to prevent debris buildup Caution Do not attempt to use scales with load cells that are not hermetically sealed in washdown applications Water damage is a common cause of failure in non hermetically sealed load cells Use care with high pressure steam washdowns for hermetically sealed load cells The steam may ...

Страница 12: ...n is necessary after load cell replacement Follow the instructions in Section 3 2 and Section 3 3 4 3 1 Load Cell Wiring to Summing Board The four load cells are each wired to their respective terminals in the summing board according to the corner numbering system shown in Figure 4 3 and the coloring code in Table 4 1 3 4 1 2 Hole for homerun cable Figure 4 3 Corner numbering top view Table 4 1 Lo...

Страница 13: ...ccident misuse neglect alteration improper installation improper repair or improper testing RLWS shall be the sole judge of all alleged non conformities Such equipment has not been modified altered or changed by any person other than RLWS or its duly authorized repair agents RLWS will have a reasonable time to repair or replace the defective equipment Buyer is responsible for shipping charges both...

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