KERN & Sohn GmbH Ziegelei 1 D-72336 Balingen email: info@kern-sohn.com Phone: +49-[0]7433- 9933-0 Fax: +49-[0]7433-9933-149 Internet: www.kern-sohn.com Operating instructions Compact balance KERN FFN-N Version 2.
GB KERN FFN-N Version 2.3 08/2013 Operating instructions Compact balance Table of Contents 1 Technical Data ................................................................................................ 4 1.1 Dimensions .................................................................................................................................. 6 2 Appliance Overview ........................................................................................ 7 2.1 2.1.1 2.1.2 2.
8 Operation ....................................................................................................... 23 8.1 8.2 8.3 8.4 Weighing .................................................................................................................................... 23 Taring......................................................................................................................................... 23 Weighing units switch-over .......................................................
1 Technical Data KERN FFN 1K-4N FFN 3K0.5IPN FFN 6K1IPN FFN 15K2IPN FFN 25K5IPN Weighing range (max) 1,5 kg 3 kg 6 kg 15 kg 25 kg Readability (d) 0,2 g 0,5 g 1g 2g 5g Reproducibility 0,2 g 0,5 g 1g 2g 5g Linearity 0,4 g 1g 1g 4g 10 g Recommended adjustment weight, not added (class) 1,5 kg (M3) 3 kg (M3) 6 kg (M3) 15 kg (M3) 25 kg (M3) Stabilization time (typical) 2 sec. Units kg, lb Warm-up time 30 min.
FFN 1K-4NM FFN 3K1IPM FFN 6K2IPM FFN 15K5IPM FFN 25K10IPM Weighing range (max) 1,5 kg 3 kg 6 kg 15 kg 25 kg Readability (d) 0,5 g 1g 2g 5g 10 g Minimum weight 10 g 20 g 40 g 100 g 200 g Verification values (e) 1g 1g 2g 5g 10 g Accuracy class III III III III III Reproducibility 1g 1g 2g 5g 10 g Linearity 1g 1g 2g 5g 10 g 1,5 kg (M1) 3 kg (M3) 6 kg (M3) 15 kg (M3) 25 kg (M3) KERN Recommended adjustment weight, not added (class) Stabilization time (typical)
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2 Appliance Overview 2.1 Overview of displays 2.1.1 Not verifiable models 2.1.
Display Designation Description Zeroing display Should the balance not display exactly zero despite empty scale pan, press the button. Will be reset to zero after short waiting time.
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3 Basic Information 3.1 Proper use The balance you purchased is intended to determine the weighing value of material to be weighed. It is intended to be used as a “non-automatic“ balance, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing plate. As soon as a stable weighing value is reached the weighing value can be read. 3.2 Improper use Do not use balance for dynamic weighing.
4 Basic Safety Precautions 4.1 Pay attention to the instructions oft the Operation Manual Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN balances. Versions in other languages are non-binding translations. The only binding version is the original document in German. 4.2 Personnel training The appliance may only be operated and maintained by trained personnel. 5 Transportation & Storage 5.
6 Unpacking, Setup and Commissioning 6.1 Installation Site, Location of Use The balances are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your balance.
6.2 Unpacking and implantation Carefully remove the balance from the packaging, remove plastic cover and setup balance at the intended workstation.
Level balance with foot screws until the air bubble of the water balance is in the prescribed circle. Pressure compensation screw Mains connection Battery compartment Pressure compensation screw: [1] On the lower side of the balance there is a pressure compensation screw [1] which has to be opened for the weighing process. Fasten the screw before cleaning the balance.
Membrane for degree of protection IP65 6.2.1 Scope of supply Serial accessories: Balance Weighing plate Carrier weighing plate Fastening screw of the carrier weighing plate Operating instructions Rechargeable battery Hexagonal socket wrench 6.3 Battery power supply The rechargeable battery is charged via the delivered power supply. The operating time of the rechargeable battery with background illumination is 30h, without that it is 50 hrs. Charging time until complete recharging 12h.
Remove the rechargeable battery cover Connecting the rechargeable battery Watch the colours: Red on red ! Black on black! Insert the rechargeable battery in a manner that it cannot slip (fasten with a rubber mat) Ensure that the cables are not squeezed.
Close the rechargeable battery cover Move both levers 90° to the right If in the display the triangle appears above the capacity display , the rechargeable battery is nearly exhausted. Connect power pack, the rechargeable battery is loaded. Avoid excess pressure on the balance in order to avoid damaging them, particularly as they are supported by the weighing plate. 6.3.
6.4 Initial Commissioning In order to obtain exact results with the electronic balances, your balance must have reached the operating temperature (see warming up time chap. 1). The weighing scale must be connected to the power supply (batteries) during this warm-up time. The accuracy of the balance depends on the local acceleration of gravity. Strictly observe hints in chapter Adjustment. 6.5 Protection type IP65 Designed for temporary contact with liquids. Use a damp cloth for cleaning. Dustproof.
7.1.1 Adjusting non-verifiable models Display Operation Start balance by pressing Whilst the weighing scale is carrying out a self-test, (00…- 99…) press CAL“ appears. and hold until the message “F1 Press , in the display appears „UnLod“. Press again the weight value will be displayed. (Example) Enter value for adjustment weight (See chpt 1) by Position weight Press Remove weight whilst scale is carrying out self-test Weighing scale changes to zero display.
7.1.2 Adjusting verifiable models The adjustment is locked for verified balances. with adjustment switch To disable the access lock, destroy the seal and actuate the adjustment switch. Position of the adjustment switch see chapter 7.2.1 Attention: After destruction of the seal the balance must be re-verified by an authorised agency and a new verification wire/seal mark fitted before it can be reused for applications subject to verification.
7.2 Verification General introduction: According to EU directive 90/384/EEC or 2009/23EG balances must be officially verified if they are used as follows (legally controlled area): a) For commercial transactions if the price of goods is determined by weighing. b) For the production of medicines in pharmacies as well as for analyses in the medical and pharmaceutical laboratory. c) For official purposes d) For manufacturing final packages In cases of doubt, please contact your local trade in standard.
7.2.1 Adjustment switch and seals After a verification the balance is sealed at the indicated positions. Position of the official seals: 1. 2. 3. 4. 5. 6.
8 Operation 8.1 Weighing 8.2 Start balance by pressing Program version is displayed. Afterwards the balance will carry out a self-test. The balance will be ready for operation as soon as weight reading “0.0” and the triangular icon above the stability display appear. The time. key can be used to set the balance to zero at any Turn off scale by pressing . The “0.0” display disappears and the weighing scale is now switched off.
The tare weight is saved until it is deleted. Remove the load from the balance and press . The zero display appears and the triangle above the net weight icon disappears. Gross weight: Press as long as the weighing tray and the load are present on the weighing platform. Remove weighing goods and receptacle Gross weight will be shown as a negative value. 8.3 Weighing units switch-over Press and at the same time. The weighing scale switches between the kg and lb units.
9 The menu 9.
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10 Error messages Display 29 Description Remedy Zero range exceeded Unload the balance A/D converter outside range Unload the balance; check if the weighing is correctly placed and screwed on Displayed weight is permanently changing Avoid air draughts / air movement as well as vibrations of the table and of the floor Overload Unload the balance and adjust again FFN-N-BA-e-1323
11 Instant Help In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning. Fault Possible cause The displayed weight does not glow. The balance is not switched on. Batteries are inserted incorrectly or empty No batteries inserted. The displayed weight is permanently changing Draught/air movement Table/floor vibrations Weighing plate has contact with other objects.
12 Service, maintenance, disposal 12.1 Cleaning Remove batteries from instrument before cleaning. Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Ensure that no liquid penetrates into the device and wipe with a dry soft cloth. Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner. Spilled weighing goods must be removed immediately. 12.
13 Declaration of –Conformity KERN & Sohn GmbH D-72322 Balingen-Frommern Postfach 4052 E-Mail: info@kern-sohn.de Tel: 0049-[0]7433- 9933-0 Fax: 0049-[0]7433-9933-149 Internet: www.kern-sohn.
