LC-WA WEIGH ASSEMBLY HIGH CAPACITY OPERATION INSTALLATION AND SERVICE MANUAL 366 CIRCLE OF PROGRESS POTTSTOWN, PA 19464 (610)323-2250 FAX: (610)323-0114 LC-WA HI IB.
TABLE OF CONTENTS CONTENTS SECTION 1.0 DESCRIPTION. SECTION 2.0 2.1 2.2 2.3 2.4 2.5 PREPARATION FOR USE RECEIVING INSPECTION SHIPMENT SITE SELECTION INSTALLING HOOK-UP CABLE SECTION 3.0 TROUBLE SHOOTING SECTION 4.0 4.1 4.2 4.3 4.4 SERVICING CHECKING THE CONNECTIONS SERVICING THE LOAD CELL CHECKING THE LOAD CELL REPLACING THE LOAD CELL SECTION 5.0 SPECIFICATIONS SECTION 6.
SECTION 1.0 DESCRIPTION EAGLE MICROSYSTEMS Weighing Assemblies provide the commercial and industrial user with an easy to use, accurate and reliable method to weigh all types of hoppers, tanks, and scale platforms. The LC–WA-H LOW CAPACITY WEIGHING ASSEMBLIES are self-supporting and require no stay rods. SECTION 2.0 PREPARATION FOR USE 2.1 RECEIVING INSPECTION 1.
1. The Weighing Assemblies should be level and parallel so that side loads and bending moment loads are minimized. 2. The load on each assembly should be roughly equal. 3. The structure being weighed should not touch or rub against supporting structures. 4. The filling or emptying pipes should have flexible sections or run parallel to tank for a length so that piping is decoupled from tank and will not affect system accuracy. 5.
SECTION 4.0 SERVICING 4.1 Checking the connections to the Summing Box. 1. Locate the Summing J Box and remove the lid. 2. View and compare all connections to Figure 2. 3. Check all connections by lightly pulling on each lead. Tighten terminal connections as needed. 4. If problem persists, press lightly on the circuit board itself and check meter response. Replace board if required. Note: Make sure when replacing the cover that the box is dry and the cover is tight.
f. If the output signal is greater than 15 millivolts, the load cell should be replaced with a known good one. FIGURE 4 LOAD CELL WIRING RED +EXT BLK -EXT GRN +SIG WHT -SIG YEL SHLD LOAD CELL LOAD CELL VOLTAGE CHECK (WITH 15V EXCITATION) BLACK TO WHITE: BLACK TO GREEN: BLACK TO RED: +7.5V (EXCITATION / 2) +7.
SECTION 5.0 SPECIFICATIONS CONSTRUCTION: Stainless Steel Load Cell, A36 Steel Mounting Plates. FINISH (STEEL PARTS): Primer and acrylic paint CAPACITY: 1000, 2000 and 4000 LB cap. SAFE OVERLOAD: 50% of Rated Capacity. ULTIMATE OVERLOAD: 100% of Rated Capacity. NOMINAL OUTPUT: 3.0 mV/V at full scale OPERATING ACCURACY: 0.1% of Capacity. REPEATABILITY: 0.02% of Capacity. LOAD CELL: Stainless Steel strain gage beam, 350 Ω.
