Benchmark HD Series ® Heavy Duty Bench Scale Installation Manual 93631
30 W. Coleman St. • Rice Lake, WI 54868 • USA U.S. 800-472-6703 • Canada/Mexico 800-321-6703 • International 715-234-9171 • Europe +31 (0)26 472 1319 www.ricelake.com www.ricelake.mx www.ricelake.eu www.ricelake.co.in m.ricelake.
Content 1.0 Introduction..................................................................................................................................... 1 1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Benchmark HD Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.0 Installation .............................
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1.0 Introduction This manual provides reference information to install and wire the Benchmark HD series single-point benchtop scale which is shown in Figure 1-1. Figure 1-1. Benchmark HD Series Bench Scale This NTEP-approved bench scale is available in a 30" x 30" and 36" x 36" platform with capacities from 250 to 500 lbs. Both capacities come standard with a potted single point load cell that is environmentally sealed. It also comes with a standard ten feet of load cell cable.
1.2 Benchmark HD Specifications Table 1-1 lists the Benchmark HD model specifications. Load Cell 250 kg for 250 lb; 500 kg for 500 lb Overload Protection 5 point, independently adjusted Cable Length 10 ft (3 m) - 6 wire shielded Output Impendance 350 Maximum Overload 200% Compensated Temperature Range -10°C/14°F to +40°C/104°F Dimensions/Capacities Size 30" x 30"/762 mm x 762 mm Capacity Height 250 lb/125 kg 8.75"/222.25 mm 500 b/250 kg 36" x 36"/914.4 mm x 914.
2.0 Installation The following sections explain the installation procedure for the Benchmark HD. 2.1 Unpacking the Benchmark Immediately after unpacking, visually inspect the Benchmark HD to ensure that the unit is undamaged. The shipping carton should contain the bench scale and this manual. If the scale was damaged in shipment, notify Rice Lake Weighing Systems and the shipper immediately. 2.1.1 Leveling the Scale Place the scale in the desired location.
2.3 Grounding the Scale Base Bench scales can build up static electricity charge during weighing operations. If powerful enough, this charge can travel through the load cell cable to the indicator. To prevent this, all bench scales should be adequately grounded so that static charges and transient electrical surges can drain directly to the ground. A recommended practice is to connect the scale base to an AC ground circuit using at least #12 wire.
3.0 Calibration It is recommended that the scale be “exercised” by loading it to near capacity two or three times before calibration to be certain that everything is seated. To calibrate the Benchmark HD scale place test weights on the scale platform equal to 70 - 100% of the scale’s capacity. If several weights are used, distribute them evenly around the platform. See your indicator manual for specific indicator calibration procedures.
4.
5.0 5.1 Replacement Parts Load Cell Replacement Use the following steps to replace load cells. -PBE DFMM TDSFXT )FY KBN OVU -FWFM CVCCMF 0WFSMPBE QSPUFDUJPO -PBE DFMM TDSFXT 4DBMF GPPU 0WFSMPBE TDSFX TUPQT Figure 5-1. 30'' x 30'' or 36'' by 36'' Load Cell Mount 1. Unplug AC power from the indicator and disconnect the load cell cable from the indicator. 2. Lift off the scale top cover and locate the four upper load cell screws. Use a 1/2" wrench to unscrew and remove those four load cell screws.
5.2 Replacement Parts Figure 5-2.
The following replacement parts are available for the Benchmark HD Series scale, PN’s 93414, 93415, 93416, and 93417. Item # Description RLWS Part Number Qty.
Benchmark Series 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 two years. RLWS warrants that the equipment sold hereunder will conform to the current written specifications authorized by RLWS.
230 W. Coleman St. • Rice Lake, WI 54868 • USA U.S. 800-472-6703 • Canada/Mexico 800-321-6703 • International 715-234-9171 • Europe +31 (0)26 472 1319 www.ricelake.com www.ricelake.mx www.ricelake.eu www.ricelake.co.in m.ricelake.
