Installation Manual 5260 Series Unirail © 1977-2012 by Fairbanks Scales Inc.
Amendment Record 5260 Series Unirail 50019 / SJ3708 Manufactured by Fairbanks Scales Inc. 821 Locust Kansas City, Missouri 64106 Issue #1 Issue #2 Issue #3 Issue #4 Issue #5 Issue #6 Issue #7 Revision 8 05/85 07/03 01/06 03/12 New Product Revision A Revision B Revision C Revision D Revision E Updated layout, models, part numbers, and drawings Revised Parts specific to model (page 18) Corrected part numbers on part list.
50019 3 03/12 - Rev.
Table of Contents Section 1: General Information A. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 B. Specifications and Requirements . . . . . . . . . . . . . . . . 4 Section 2: Installation A. General Service Policy . . . . . . . . . . . . . . . . . . . . . . . . 6 B. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 C. Pre-Installation Checklist . . . . . . . . . . . . . . . . . . . . . . 7 D. Unpacking . . . . . . . . . . . . . . . . . . . . .
Section 1: General Information A. Introduction The Unirail is an electronic weighing device designed for use with existing overhead monorail systems in the meat processing industry. The scale is constructed of Type 304 stainless steel. It is fully electronic in design with the live rail supported at each end by a strain gauge loadcell. The scale meets the criteria for both NIST Handbook 44 and USDA Packers & Stockyards Administration requirements, but is not NTEP approved.
A Weighrail B Length: Model H21-5260-A H21-5260-B H21-5260-C H21-5260-D H21-5260 50019 A: Weigh Rail Length 22 11/16" 28 11/16" 34 11/16" 40 11/16" 54 11/16" 6 B: Overall Length 34” 40 3/16" 46 3/16" 52 3/16" 66 3/16" 03/12 - Rev.
Section 2: Installation A. General Service Policy Prior to installation, it must be verified that the equipment will satisfy the customer's requirements as supplied, and as described in this manual. If the equipment cannot satisfy the application and the application cannot be modified to meet the design parameters of the equipment, the installation should not be attempted. B. Overview 1.
4. Customer and site readiness: a. Is the Location ready? b. Is the customer aware there will be work disruptions? c. Are the operators available for training? 5. Installation of the Unirail (See Note). 6. Installation of the digital weight indicator. 7. Calibration and Adjustments 8. Customer training Note: Rail hangers, mounting hardware, and any further supports are not provided. The weight of the Unirail varies from 95 lbs to 150 lbs. C.
7. Who is providing assistance to lift and fasten the Unirail onto the rail hangers? Will they be there? 8. Has the service technician reviewed the recommended set-up with the Area Sales Manager or Area Service Manager, and identified all necessary variations to satisfy the customer's particular Application? 9. Will the equipment operator(s) be available for training? 1. Check that all components are on hand, and agree with the D. Unpacking customer's order. 2.
F. Installation Instructions Overview The weigh rail, its approaches, the load cells, and their housing are arranged in a configuration that requires no space above the customer's normal supporting structure. All components of the Unirail are assembled as one complete calibrated unit ready for installation into the existing monorail line. Install the Unirail at the approach rails by direct attachment to the rail hangers. The scale should be installed level in both directions in the horizontal plane.
STANDARD RAIL HANGERS AT EACH END - NOT INCLUDED SEE NOTE BELOW FRONT VIEW LOCATE HANGERS TO SUIT HOLES IN EACH APPROACH RAIL EACH END NOTE: WEIGH RAIL IS FACTORY ADJUSTED 1/32" HIGH TO ACCOUNT FOR LOAD CELL DEFLECTION 5" 3/8 MIN. SIZE FASTENER 1/2" MINIMUM APPROACH RAIL REAR VIEW 3/32 GAP 2 1/2" 4 5/16" 1 13/16" LOADCELLS BOTTOM COVER TOP VIEW SCALE FRAME ASSY TOP COVER APPROACH RAIL VIEW 7/16" DIAMETER HOLES PROVIDED BY FAIRBANKS .62 .72 2.25 1.50 ALL DIMMENSIONS SHOWN IN INCHES.
G. Wiring After the Unirail is physically installed, install the digital weight indicator per the appropriate service manual. 1. Attach the cable from the Unirail splice tube to the weight indicator as follows: Cable leads Green Black White + Excitation - Excitation + Signal Red Shield - Signal LOADCELL #1 +EX -EX -SIG +SIG SHLD E1 LOADCELL #2 2. Attach a length of 18 gauge wire from the scale structure to a suitable ground.
Section 3: Calibration The Unirail contains two (2) potentiometers located in a sealed flexible A. Calibration Procedure tube inside the frame. These are used to adjust the weight indication of an individual loadcell, to enable the Unirail to display the same weight at each end of its weigh rail. Testing should be performed using 500 lbs suspended on a single roller hook. The hook is then moved from load cell No. 1 and No. 2, and the weight indications are noted and compared.
Section 4: Operation A. Scale Operation Instructions 1. Weigh empty roller and enter tare on instrument. 2. Set in NET position. 3. Roll onto the live section of the rail one or more sections of meat supported from roller hooks. 4. The weight is now taken in the static mode. 5. Repeat steps 2-4 for further weighments; step 1 if different roller is used. 50019 14 03/12 - Rev.
Section 5: Service and Maintenance A. Introduction The weigh rail should remain in the center of its fixed approaches, and free to move up and down very slightly on its load cell mounts. The weigh rail must remain free and unobstructed for proper performance. Periodic examination and cleaning any debris from its gaps should be performed regularly. Do not lubricate, grease, or oil any part of the Unirail. B. Replacement & Alignment Procedures Loadcells & Weighrail: 1.
6. Using a 3/.4" end wrench turn the elastic stop nuts onto the studs until they are just tight against the rail, then back off ¼ turn so the weighrail is just free to move. (This adjustment is critical to proper scale performance.) The weighrail now floats between the dead rails and prevents binding and torque on the load cells when the load is applied.
Section 6: Parts List PARTS COMMON TO ALL MODELS ITEM # Part # DESCRIPTION 3 5 6 7 8 9 10 11 12 13 14 16 17 18 19 20 21 22 23 12226 11586 11936 11926 11179 11067 14774 11585 11073 11099 11022 11353 11638 11332 12053 11330 11328 11266 11324 95272 Loadcells - Matched Pair Shim - Weighrail Stud - Rail Adhesive - Stud Lock Nut - Hex - Stop - 1/2-20 Screw - Cap - Hex Hd - 1/2-20 X 2 1/2" Block - Loadcell Shim - Loadcell Screw - Cap - Hex Hd - 10-24 X 2" Nut - Hex - 10-24 Bushing - Strain Relief Wire - Hook-
FRONT VIEW 1 2 3 9 4 10 5 6-7 LOAD CELL 11 8 12-13 TOP VIEW 15 14 16 17 Splice Assy Balance Potentiometers To Digital Weight Indicator To Loadcell 21 22 Splice Tube 22 18 To Loadcell 21 19-20 23 50019 18 03/12 - Rev.
