KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen E-Mail: info@kern-sohn.com Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Installation Instructions Weighing beams KERN KFA V20 Version 1.
GB KERN KFA V20 Version 1.2 08/2013 Installation Instructions Weighing beams Contents 1 Technical data ................................................................................................ 3 2 Appliance overview ....................................................................................... 5 3 Basic Information (General) .......................................................................... 6 3.1 Documentation .................................................................
1 Technical data Model Weighing range Readability Preload additive Cable length display screen approx. Net weight approx. m Connecting cable weighing beams approx. m Max d kg kg kg KFA 1500V20 1500 0.5 300 5 2.5 42 KFA 3000V20 3000 1 500 5 2.5 42 KFA 3000V20L 3000 1 500 5 1.5 42 KFA 6000V20 6000 2 1000 5 1.5 35 KFA 6000V20L 6000 2 1000 5 1.
Dimensions: „L“-models length 2000 mm 4 KFA V20-IA-e-1312
2 Appliance overview Illustrative example weighing system KERN KFA V20 + KFB-TM Mains lead display screen Connecting cable weighing beams Handle for easy transport Weighing cell feet and weighing cells Cover adjusting screw for weighing cell feet KFA V20-IA-e-1312 5
3 Basic Information (General) 3.1 Documentation These installation instruction contain all data necessary for placing and commissioning the weighing beams KERN KFA V20. In combination with a display unit, described below as weighing system, for operation configuration, please refer to the operating instructions of the display unit. 3.2 Proper use The weighing beams are designed for weighing of large, voluminous or long loads.
3.5 Monitoring of Test Resources In the framework of quality assurance the measuring-related properties of the weighing system and, if applicable, the testing weight, must be checked regularly. The responsible user must define a suitable interval as well as type and scope of this test. Information is available on KERN’s home page (www.kern-sohn.com with regard to the monitoring of weighing system test substances and the test weights required for this.
6 Unpacking, Setup and Commissioning 6.1 Installation Site, Location of Use The weighing beams are designed in a way that reliable weighing results are achieved in common conditions of use. To enable exact and fast work, select the right site. On the installation site observe the following: Place the weigh beam on a level and stable surface. The foundations at the site must be able to bear the weight of the weighing beams as well as the weight of the maximum weight.
6.2 Unpacking and placing Unpacking: Remove weighing beams and accessories carefully from packaging, remove packaging material and place device at the planned work place. Verify that there has been no damage and that all packing items are present. Scope of delivery: 2 Weighing beams with fitted “mains lead display screen“ and “connecting cable weighing beams”. 4 weighing cell feet Operating instructions Placing: Prior to the final placing, install the four weighing cell feet.
6.3 Connecting a display screen Attention Put the connecting cable to the display unit in a manner that it is protected against damage.
7.1 Load/unload weighing beams The weighing beams are designed for an evenly spread load Avoid falling load, shock loads and impacts from the side. Weighing beams must not be moved when loaded. Place the load onto both weighing beams by using a pallet truck, crane or fork lift. Ensure that the load is not swinging when it is placed onto the weighing beams. Lift the load first vertically at least 10 cm above the weighing beams before it is removed or newly placed.
8 Service, maintenance, disposal Before any maintenance, cleaning and repair work disconnect the appliance from the operating voltage. 8.1 Daily check Ensure that all four feet are in contact with the floor. Ensure that cables are not damaged. Ensure that the weighing beams are free of soiling, in particular underneath the edges. 8.2 Cleaning ! Remove regularly corrosive substances. ! Keep IP protection. ! Do not aim water or steam jet at the weigh cells.
8.5 Instant help In case of an error in the program process, briefly turn off the weighing system and disconnect from power supply. The weighing process must then be restarted from the beginning. Help: Fault The displayed weight is permanently changing Possible cause Draught/air movement Floor vibrations Weighing beams come into contact with foreign substances.
9 Service documentation This chapter is only intended for a balance specialist! The weighing beams are fitted with a DMS weigh cell at each corner. The analogue-digital transformation occurs in the display unit. Also all the balance and country-specific data are stored there. 9.
9.2 Check and adjustment of the corner load Check of the corner load: Place a suitable aid such as a pallet on both weighing beams. Make sure that the aid is designed to bear the weight of the test weight. Place the test weights in the centre of the load plate and tare. The balance displays -0-. Place the test weights successively on all four corners. Now the deviations are displayed with sign, write down the values. If there are deviations out of the tolerances (see chap. 9.
10 Preload / Deadload settings Max. preload* (kg) Kern model Deadload** (kg) * = additive preload **= already applied preload KFA 1500V20 0 39 Center Overload Protection circa (kg) NA KFA 3000V20 0 39 NA NA 1500kg KFA 3000V20L 0 55 NA NA 1500kg KFA 6000V20 0 85 NA NA 3000kg KFA 6000V20L 0 95 NA NA 3000kg Platform type Platform dimension Load cell Type TC Class Max Emax Emi No.
