Rice Lake RoughDeck FXB Installation & Operation Manual
Flexure base floor scale
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Summary of Contents for Rice Lake RoughDeck FXB
- Page 1 RoughDeck Flexure Base Floor Scale Installation/Operation Manual 32958...
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Page 2: Table Of Contents
Load Cell Replacement ................... 9 Replacement Parts List and Accessories ............9 Limited Warranty ................. 11 Copyright © 1995 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America. July, 1995 Specifications subject to change without notice. -
Page 3: Introduction
Introduction The RoughDeck FXB is a flexure base floor scale. Unlike conventional mechanical scales, the base of a RoughDeck FXB has no moving parts and uses thin high-strength flexure plates that always stay aligned. The FXB is available in sizes from 18" x 24" with a 500 lb. capacity to 96" x 120" with a 30,000 lb. capacity. -
Page 4: Operating Requirements
Deck Plate Deck Frame Lever System Center Flexure Gripper Plate Bolts Load Flexure Load Cell Fulcrum Flexure Load Bridge Check Link and Mounting Bolts Figure 1 Base Frame 1.2 Operating Requirements Electrical grounding For systems where the scale is connected to a 120 VAC circuit, the instrument must be directly connected to an earth ground with a ground cable that has no more than 3 ohms resistance throughout its length and connections. -
Page 5: How Flexure Levers Work
1.3 How Flexure Levers Work In the FXB, flexure levers replace pivots and bearings for the fulcrum and load and power points on the lever. The multiple of the lever for a flexure is calculated in the same manner as a pivot and bearing lever system. The reference point of the flexure is the center line through the flexure itself (see the following figure). -
Page 6: Installation
Installation 3.1 Site Preparation Because the scale must not be loaded beyond its capacity, even momentarily, do not select a site where overweight loads would have to maneuver to avoid crossing the platform. Use the following guidelines for site preparation: •... -
Page 7: Electrical Interface To Indicator
The weigh platform frame and scale base are match marked on the corner near the load cell for proper re- assembly. 3.3 Electrical Interface to Indicator 20 feet of 4-wire cable is supplied to connect the scale to the weight indicator. Use the wiring scheme in the following table to connect your RoughDeck FXB. Color Code Function + Excitation Black –... -
Page 8: Calibration And Adjustments
Calibration and Adjustments 4.1 Calibration 1. Zero balance digital weight indicator. 2. Place test weights equal to 70% - 80% of scale’s capacity on weigh platform and adjust weight indicator span for correct reading. 3. Remove test weights and check zero. 4. -
Page 9: Optional Equipment
9. Re-check corners per step 1. 10. Recalibrate scale as described in section 4.1. Optional Equipment The following options are available for the RoughDeck FXB: Fork lift skids Two 8" channels mounted on customer-specified centers. Fork lift skids with weight indicator column Two 8"... -
Page 10: Service Information
Service Information 6.1 Troubleshooting Problem Probable Causes Shift error Center flexure offset from center line Corners not shimmed tightly to floor Nose-iron on power lever too high or too low Pivot heads need shimming Bent flexures or cable assembly Erratic readings Center leveling bolts not down far enough, or down too low Corners not shimmed tightly to floor Ground shield not connected to cannon plug or meter shield... -
Page 11: Load Cell Replacement
6.2 Load Cell Replacement Replacement load cells can be ordered from Rice Lake Weighing Systems according to the table in Section 6.3. To replace a load cell in an FXB: 1. Remove deck assembly. 2. Loosen bottom locking nut (see Figure 3). - Page 12 Replacement Parts List and Accessories (continued) Flexures Size Capacity (lbs) Load Cells Wire Rope Center Fulcrum Load 48" x 48" 1000 21436 33084 33305 33303 33087 48" x 48" 2000 21436 33084 33305 33303 33087 48" x 48" 5000 21436 33084 33305 33303...
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Page 13: Limited Warranty
Limited Warranty Rice Lake Weighing Systems (RLWS) warrants that all RLWS equipment and systems properly installed by a Distributor or Original Equipment Manufacturer (OEM) will operate per written specifications as confirmed by the Distributor/OEM and accepted by RLWS. All systems and components are warranted against defects in materials and workmanship for one (1) year.
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