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 Electronic Crane Scales Logbook Regular maintenance and care KERN HFM Version 1.
GB KERN HFM Version 1.1 09/2010 Operating instructions / logbook Electronic Suspending Balance Table of Contents 1. Technical Data______________________________________________________________ 3 1.1 Dimensions (mm) ____________________________________________________________ 4 2. General Safety Instructions ___________________________________________________ 5 3. The crane scales at a glance __________________________________________________ 8 3.1 3.2 3.3 3.3.1 3.4 3.
1. Technical Data KERN Readability (d) HFM 1T0.1 HFM 3T0.5 HFM 5T0.5 HFM 10T1 0.1 kg 0.5 kg 0.5 kg 1 kg Weighing range (max) 1 000 kg 3 000 kg 5 000 kg 10 000 kg Taring range (subtractive) 1 000 kg 3 000 kg 5 000 kg 10 000 kg Reproducibility 500 g 1 kg 2.5 kg 5 kg Linearity ±1 kg ±2 kg ±5 kg ±10 kg 1 t (M1) 3 t (M1) 5 t (M1) 10 t (M1) Recommended adjustment weight, not added (class) Stabilization time 2s Precision 0.2 % of max.
1.1 Dimensions (mm) A B C D F H ∅1 ∅2 ∅3 X HFM 1T0.1 270 173 200 40 98 285 51 68 25 540 HFM 3T0.5 270 173 200 40 95 540 63.5 74 29 610 HFM 5T0.5 297 185 230 55 95 635 63.5 74 29 700 HFM 10T1 297 185 230 60 110 750 76.
2. General Safety Instructions Duties of the owner-operator Follow the national accident prevention regulations as well as the working, operating and safety regulations of the owner-operator. Observe all safety regulations of the crane manufacturer. The balance may only be used for the proposed purpose. Any type of use which is not specified in these operating instructions, will be considered as improper use.
Major display deviations (incorrect weighing results) may be experienced should electromagnetic fields (e.g. due to mobile phones or radio equipment), static electricity accumulations or instable power supply occur. Change location or remove source of interference. 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.
Monitoring of Test Resources In the framework of quality assurance the measuring-related properties of the balance 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 balance test substances and the test weights required for this.
3. The crane scales at a glance The crane scales are a multi-purpose and cost-saving solution for overhead weighing applications such as e.g. recycling, metal processing, machine engineering, transport and logistics. With the radio remote control, operation will be more comfortable yet. 3.1 Overview Fig. 1: Front view of balance 1 2 3 4 5 8 Shackle Display Keyboard Safety bracket Hook, revolvable Fig. 2: Radio remote control 6 7 Antenna Keyboard, see chapter 3.
3.2 Display LED The LED lights up, if the weight display is stable a the weight is in the area around the zero point when the battery is being recharged 3.3 Keyboard Button ON/OFF Description of function • Turn on or off the balance • Modification of readability HFM 1T0.1: 100gÖ200gÖ500g HFM 3T0.5: 500gÖ 1 kgÖ2 kg HFM 5T0.
3.3.1 Numeric entry Button Function Increase flashing digit HOLD Digit selection a Terminate input 3.4 Radio remote control The balance can be operated by the radio remote control like by a keyboard. All functions (excepted ON/OFF) can be selected. The red LED must light up when any button is pressed. If it does not light up, the batteries in the remote control must be exchanged. Range on free surface (free of buildings) approx. 20 m. 10 1 Standby-Modus, see chapter 4.3.
3.5 Sticker Ö Do not stand or go under suspended loads. Ö Do not use on building sites. Ö Suspended loads have to be observed constantly. Ö Do not exceed the nominal load of crane scales. (Example) Ö The product meets the requirements of the German Equipment and Product Safety Act.
4. Commissioning Attention: Always observe chapter 2 „General Safety Instructions“! 4.1 Unpacking Once delivered and unpacked, crane scales will not be taken back. The crane scales have been sealed by Messrs. KERN. SAFETY INSTRUCTIONS for protection against break Ö Shackles and hooks are sealed by Sella tape. Ö The packaging is also sealed by adhesive tape. + Broken seal obliges to purchase. Thanks for your comprehension. Your KERN Quality assurance team The crane scales are compact and quite heavy.
4.3 Rechargeable battery operation Material damage on crane scales Ö Only use the delivered mains adapter. CAUTION Ö Make sure that the mains adapter, the cable and the mains plug are in a perfect condition. Ö Do not use the crane scales during the loading process. Before the first use, the rechargeable battery should be charged by connecting it to the mains power cable for at least 24 hours. The operating time of the rechargeable battery is approx. 60 hours.
4.4 Suspending the balance 1 2 Condition The crane needs a safety bracket (1) that the unloaded crane scales cannot fall down. If the safety bracket is missing or damaged, please contact the crane manufacturer in order to receive a hook with this safety equipment. Ö Suspend the crane scales on the lower hook of a crane and close the safety bracket. The crane scale’s upper eyelet should rest in the saddle (2).
5. 5.1 Operation Safety instructions Risk of injury due to falling loads! DANGER Ö Always work with particular care according to the general rules for crane operation. Ö Check all parts (hook, eyelet, rings, rope slings, cables, chains etc.) for excessive wear or damage Ö If faults can be seen on the safety bracket of the hook or if it is missing completely, the scales must not be used. Ö Work only with appropriate speed. Ö Always avoid vibrations and horizontal forces.
5.2 Loading the crane scales For good weighing results observe the following, illustrations see next page: Ö Only use load attachment devices which guarantee a one-spot suspension and where the scales can be suspended freely. Ö Do not use too large load attachment devices which do not guarantee any onespot suspension. Ö Do not use multiple suspensions. Ö Do not pull or push the load or the loaded balance. Ö Do not pull the hook horizontally. Loading the balance 1.
Only use load attachment devices which guarantee a one-point suspension and where the scales can be suspended freely. Do not use too large load attachment devices which cannot guarantee a one-point suspension.
Do not push or pull Do not pull the hook horizontally Do not use multiple suspensions 18 HFM-BA-e-1011
5.3 Turn on/off Start-up Ö Press the ON/OFF button on the balance keyboard. The display lights up and the balance carries out a selftest. The selftest is completed when the weight value 0 appears on the display. Switch on only possible at the keyboard of the balance. Switching Off Ö Press the ON/OFF button on the balance keyboard. 5.4 Setting balance to zero In order to obtain optimal weighing results, reset to zero the balance before weighing. Manual Ö Unload the balance Ö Press the ZERO button.
5.5 Taring Ö Suspend preload. Press the ZERO button. In the display appears 0 (kg) and the LED a lights up. The weight of the container is now internally saved. Ö Weigh the material, the net weight will be indicated. Ö After removing the preload weight appears as negative display. Ö To delete the tare value, remove load from crane scales and press the ZERO button. 5.6 Weighing Ö Load the crane scales. The weight value will be displayed at once. After standstill control the LED lights up.
6. Menu Navigation in the menu: Call function Ö Switch on the balance and during the selftest press the ZERO and the „P1 - - - “is displayed. button at the same time. Ö Enter password: or select standard password „0000“ with HOLD number, increase the flashing number using or personal password, see function F8 ci Ö Confirm with ZERO button. The first function „F0 di“ is displayed. Select function Ö The button allows to select the individual functions one after the other.
Overview: Modification of readability High* Description d (high) d (low) cap 1t 2kg 1kg 500g 500g 200g 100g 3t 10kg 5kg 2kg 2kg 1kg 500g 5t 10kg 5kg 2kg 2kg 1kg 500g 10 t 20kg 10kg 5kg 5kg 2kg 1kg F1 az AZn 0 0.5 d Automatic zero point correction (zero tracking) AZn 1* 1d AZn 2 2d AZn 3 4d F2 bt Not documented F3 sp Not documented F4 ip Internal A/D converter value F5 ut Not documented F6 sl SLP 0 Standby mode switched off Standby mode see chap. 4.3.
7. Adjustment Ö Switch-off balance and attach a carrying help if necessary. Ö Switch-on balance with attached carrying help and during the selftest press the button at the same time. „P1 - - - “is displayed. ZERO and the Ö Use the number keys to enter password: or select standard password „0000“ with HOLD number, increase the flashing number using or personal password, see function F8 ci Ö Confirm with ZERO button, the first function „F0 di“ is displayed.
8. Error messages Error message Description Possible causes --ol- Maximum load exceeded Ö Check whether the balance has been damaged Err 5 Keyboard error Ö Improper operation of the balance Err 6 Ö Weighing plate not installed Value outside the A/D changer Ö Damaged weighing cell range Ö Damaged electronics Ba lo Capacity of rechargeable battery exhausted Ö Reduce load Ö Recharge battery Should other error messages occur, switch balance off and then on again.
9. Cleaning, Maintenance and Disposal Risk of injury and risk of material damage! The crane scales are part of a hoisting device! For a safe operation please observe the following: Danger Ö Have carried out a regular maintenance by trained specialized staff Ö Carry out regular maintenance and care, see chapter 9.2 and 9.3 Ö Have the parts exchanged only by trained specialized staff. Ö If there arose discrepancies with the safety checklist, the balance must not more be put into operation.
Regular maintenance: Initial Commissioning, every 3 months or anyway after 12 500 weighings Check all dimensions, see checklist chap. 9.2 Check the shackle or the eyelet for wear and tear, such as e.g. plastic deformation, mechanical damage (unevenness), notches, striation, cracks, corrosion, thread damage and torsions.
9.3 Checklist „Regular maintenance“, (see chapter 9.2) Original dimensions crane scales, serial no.: ………………………………… Capacity ……………………………… Shackle a (mm) Hooks b (mm) c (mm) Wear and tear Date ………………………………… Split pin&Nut d (mm) Max.
Shackle Max.
HFM-BA-e-1011 29
10. Appendix 10.1 Checklist „Enhanced maintenance“ (General revision) The enhanced maintenance has to be carried out by a service partner authorized by KERN. Crane scales Interval Model ………………………………….. Serial no. ……………………………………………..
10.2 List „spare parts and repair of safety-relevant parts“ Repair has to be carried out by a service partner authorized by KERN. Crane scales Model ………………………………….. Serial no. ……………………………………………..
Crane scales Model ………………………………….. Serial no. ……………………………………………..
