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 HFB Version 1.
GB KERN HFB Version 1.2 10/2012 Operating instructions / logbook Electronic Suspending Balance Table of Contents 1. Technical Data ______________________________________________________________ 3 1.1 1.2 Dimensions _________________________________________________________________ 4 EC-Declaration of -Conformity ___________________________________________________ 5 2. General Safety Instructions ___________________________________________________ 6 3.
1. Technical Data KERN HFB 150K50 HFB 300K100 HFB 600K200 50 g 100 g 200 g Weighing range (max) 150 kg 300 kg 600 kg Taring range (subtractive) 150 kg 300 kg 600 kg 50 g 100 g 200 g ±100 g ±200 g ±400 g 150 kg (M1) 300 kg (M1) 500 kg (M1) Readability (d) Reproducibility Linearity Recommended adjustment weight, not added (class) Stabilization time Precision 2s 0.2 % of max.
1.
1.2 EC-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.
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: Scales front and rear view 1 2 3 4 5 6 Eyelet Display Keyboard Safety bracket Hook, revolvable Second display HFB-BA-e-1212 Fig. 2: Radio remote control 7 8 Antenna Keyboard, see chapter 3.
3.2 Display [] over the symbol appears if the capacity of the rechargeable battery will soon be exhausted. The balance will be ready to operate for about another 30 minutes, then it will switch off automatically. a the weight is in the area around the zero point TARE the scales have been tared HOLD the data-hold function is active kg the current weighing unit is „kg“ lb the current weighing unit is „lb“ The LED display above recharged.
3.3 Keyboard Button Designation Description of function Switch-over weighing unit. UNIT button Exit menu, back to weighing mode. 3.4 HOLD button The weight display is „frozen“ via the HOLD button until the HOLD-button is pressed anew. TARE button Taring ZERO button Corrects the zero point of the balance. The display is set to zero.
3.5 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. 3.6 1 Taring 2 Zeroing 3 Switch-over weighing unit 4 The weight display is „frozen“ via the HOLD button until the HOLD-button is pressed anew.
4. Commissioning + Always observe chapter 2 „General Safety Instructions“! + Before every use check the firm fit of the nut (A) and lock washer (B), see chap. 9.2 „Regular maintenance“. 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 The eyelet and the hooks are sealed by Sella tape. The packaging is also sealed by adhesive tape. + Broken seal obliges to purchase.
4.2 Checking the original dimensions Enter the original dimensions of the product datasheet into the grey fields of the checklist chap. 9.3. Realization of all safety checks, see chapter 9.2 „Regular maintenance after three months“ Enter all data (date, tester, results) in the first line under „Inspection before first use“ in the checklist (see chapter 9.3) CAUTION 4.3 If the dimensions of your first safety inspection do not match those of KERN, the balance must not be put into operation.
4.4 Suspending the balance 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. 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. Operation 5.1 Safety instructions Risk of injury due to falling loads! DANGER Always work with particular care according to the general rules for crane operation. Check all parts (hook, eyelet, rings, rope slings, cables, chains etc.) for excessive wear or damage If faults can be seen on the safety bracket of the hook or if it is missing completely, the scales must not be used. Work only with appropriate speed. Always avoid vibrations and horizontal forces.
5.2 Loading the crane scales For good weighing results observe the following, illustrations see next page: Only use load attachment devices which guarantee a one-spot suspension and where the scales can be suspended freely. Do not use too large load attachment devices which do not guarantee any onespot suspension. Do not use multiple suspensions. Do not pull or push the load or the loaded balance. 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 HFB-BA-e-1212 19
5.3 Turn on/off Start-up 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 Press the ON/OFF button on the balance keyboard. 5.4 Setting the balance to zero In order to obtain optimal weighing results, reset to zero the balance before weighing.
5.5 Taring Suspend preload. Press the TARE button, the zero display and the [] symbol above TARE will appear. The weight of the container is now internally saved. Weigh the material, the net weight will be indicated. After removing the preload weight appears as negative display. To delete the tare value, remove load from crane scales and press the TARE button. 5.6 Weighing Load the crane scales. The weight value will be displayed at once.
5.7 Record weight value (freeze) Press the HOLD button to „freeze“ or to record the current weight value. It remains displayed until it is deleted. The [] symbol above HOLD appears. In order to delete the "frozen" or the recorded weight, press the HOLD button. The [] symbol above HOLD extinguishes.
6. Menu Navigation in the menu: Call function Switch-on balance and during the selftest press the TARE button. The first function F0CAP is displayed. Select function The TARE button allows to select the individual functions one after the other. Select setting Confirm the selected function by the ZERO button. The current setting will be displayed. Change settings Use the TARE button to switch over into the available settings.
Overview: F0 CAP Available settings 30k Select capacity 60k Max = 60 kg 150k Max = 150 kg Function Description Max = 30 kg 300k Max = 300 kg Default setting HFB 300K100 600k Max = 600 kg Default setting HFB 600K200 F1 unit Not documented F2 res inC 5* 5 Select resolution inC 10 10 F3 a2n 0.5 d 0.
7. Adjustment Switch-off balance and attach a carrying help if necessary. Switch-on balance with attached carrying help and during the selftest press the TARE button. The first function “F0CAP“is displayed. Press the TARE button repeatedly until „F9 CAL“ will be displayed. Press the ZERO button, „UnlD“ is displayed. Unload the balance, wait until the [] symbol above HOLD appears. Press the ZERO button, the currently set adjustment weight is displayed.
8.
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 Have carried out a regular maintenance by trained specialized staff Carry out regular maintenance and care, see chapter 9.2 and 9.3 Have the parts exchanged only by trained specialized staff. If there arose discrepancies with the safety checklist, the balance must not more be put into operation.
Regular maintenance: Prior to each usage 28 Check the firm fit of the nut (A) and safety disk (B).
Initial Commissioning, every 3 months or anyway after 12 500 weighings Check all dimensions, see checklist chap. 9.3 Check the application of the safety bracket on the hook, moreover check for fault and correct function Check the stable fit of the eyelet. Visual check of chain for damage and corrosion. Check the chain and the eyelet for wear and tear, such as e.g. plastic deformation, mechanical damage (unevenness), notches, striation, cracks, corrosion, thread damage and torsions.
All inspections must be registered in the checklist (chap. 9.4). Every 5 years or anyway after 250 000 weighings All load carrying parts have to be exchanged by trained specialized staff (KERN customer service). Every 10 years or Replace the crane scales entirely anyway after 500 000 weighings Note During the revision watch out for wear and tear according to the following drawings (chap. 9.3).
9.3 Checklist „regular maintenance“, (see chapter 9.2) Original dimensions crane scales, serial no.: ………………………………… Capacity ……………………………… Eyelet a (mm) Hooks b (mm) Date ………………………………… Wear and tear c (mm) d (mm) Angle α (°) Tester ……………………………………… These data can be found in the document attached to the balance. Please keep this document always available.
Eyelet a Max.
Eyelet a Max.
Eyelet and hook HFB-BA-e-1212 Chain 34
9.4 12-month maintenance (see chap. 9.2) Tight fit / damage Lock washers Tight fit / deformation Bolt Split pin Nut Lock washers Visual check for damage / corrosion Chain Safety bracket Date Tester 12 months / 50 000 x 24 months / 100 000 x 36 months / 150 000 x 48 months / 200 000 x 60 months / 250 000x All HFB-BA-e-1212 load carrying parts have to be exchanged by a service partner authorised by KERN.
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. ……………………………………………..
