KERN & SOHN HFC 10T-3 User Manual
KERN & Sohn GmbH
Ziegelei 1
E-Mail: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Internet: www.kern-sohn.com
Operating manual
Electronic Crane Scales
Logbook
Regular maintenance and care
KERN HFC
Version 1.1
01/2015
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
HFC-BA-e-1511
KERN HFC
Electronic Suspended balance
GB
Version 1.1 01/2015
Operating instructions / logbook
Contents
1. Technical data _________________________________________________ 4
1.1 Dimensions __________________________________________________________ 6
2. General Safety Instructions ______________________________________ 9
2.1 Duties of the owner-operator ___________________________________________ 9
2.2 Organizational measures ______________________________________________ 9
2.3 Environmental conditions ______________________________________________ 9
2.4 Pay attention to the instructions in the Operation Manual __________________ 10
2.5 Proper use __________________________________________________________ 10
2.6 Improper Use _______________________________________________________ 10
2.7 Warranty ___________________________________________________________ 10
2.8 Safe working ________________________________________________________ 11
2.9 Monitoring of Test Resources _________________________________________ 11
2.10 Testing upon acceptance _____________________________________________ 11
2.11 Initial Commissioning _________________________________________________ 11
2.12 Shutdown and storage ________________________________________________ 11
3. Appliance overview ____________________________________________ 12
3.1 Overview of display __________________________________________________ 13
3.2 Keyboard overview ___________________________________________________ 14
3.3 Label _______________________________________________________________ 15
4. Commissioning _______________________________________________ 16
4.1 Unpacking __________________________________________________________ 16
4.2 Scope of delivery ____________________________________________________ 16
4.3 Checking the original dimensions ______________________________________ 17
4.4 Battery / rechargeable battery operation ________________________________ 17
4.6 Suspending the balance ______________________________________________ 20
2 HFC-BA-e-1511
5. Operation ____________________________________________________ 21
5.1 Safety instructions ___________________________________________________ 21
5.2 Loading the suspended balance _______________________________________ 22
5.3 Turn on/off __________________________________________________________ 25
5.4 Set balance to zero __________________________________________________ 25
5.5 Taring ______________________________________________________________ 26
5.6 Weighing ___________________________________________________________ 26
5.7 Switch-over weighing unit _____________________________________________ 27
5.8 Hold weighing value (Data-HOLD function) ______________________________ 27
5.9 Peak value function __________________________________________________ 28
5.10 Weighing with tolerance range _________________________________________ 28
5.11 Totalization _________________________________________________________ 31
5.12 Gross / net invocation ________________________________________________ 32
5.13 Display background illumination _______________________________________ 33
5.14 Automatic shutdown fu ncti on __________________________________________ 34
6. Menu ________________________________________________________ 35
6.1 Navigation in the menu: _______________________________________________ 35
6.2 Overview: ___________________________________________________________ 36
7. Adjustment / linearization _______________________________________ 38
7.1 Adjustment __________________________________________________________ 38
7.2 Linearization ________________________________________________________ 41
8. Cleaning, Maintenance and Disposal ______________________________ 43
8.1 Cleaning and Disposal ________________________________________________ 43
8.2 Regular maintenance and care ________________________________________ 44
8.3 Checklist „regular maintenance“, (see chapter 8.2) _______________________ 45
9. Enclosure ____________________________________________________ 47
9.1 Checklist „Enhanced maintenance“ (General revision) ____________________ 47
HFC-BA-e-1511 3
1. Technical data
KERN HFC 1T-4 HFC 3T-3
Readability (d) 0.5 kg 1 kg
Weighing range (max) 1000 kg 3000 kg
Taring range (subtractive) 999.5 kg 2999 kg
Reproducibility 0.5 kg 1 kg
Linearity ± 1 kg ± 2 kg
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Warm-up time 10 min
Units kg, lb, N
Auto off 10 min
Allowable ambient
temperature
Ambient humidity (max ) 80 %
Input Voltage
Battery
Rechargeable battery NiMH
1000 kg (M3) 3000 kg (M3)
5…+35 °C
Power supply unit 100 – 240 V, 50 / 60 Hz
Device 9 V, 800 mA
3 x 1.5 V AA
Service life (background illumination OFF) 40 h
Service life (background illumination OFF) 30 h
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 2500 g
Rechargeable battery NiMH, 7.2V, 1200mA
Remote control (standard
equipment)
Remote control
Input Voltage
4 HFC-BA-e-1511
Service life (background lighting on) 25 h
Service life (background illumination OFF) 35 h
Loading time 8 h
Mains adapter: 100 – 240 V, 50 / 60 Hz
The appliance: 12 V, 500 mA
KERN HFC 5T-3 HFC 10T-3
Readability (d) 2 kg 5 kg
Weighing range (max) 5000 kg 10000 kg
Taring range (subtractive) 4998 kg 9995 kg
Reproducibility 2 kg 5 kg
Linearity ± 4 kg ± 10 kg
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Warm-up time 10 min
Units kg, lb, N
Auto off 10 min
Allowable ambient
temperature
Ambient humidity (max ) 80 %
Input Voltage
Battery
Rechargeable battery NiMH
3000 kg (M3) 10000 kg (M3)
5…+35 °C
Power supply unit 100 – 240 V, 50 / 60 Hz
Device 9 V, 800 mA
3 x 1.5 V AA
Service life (background illumination OFF) 40 h
Service life (background illumination OFF) 30 h
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 4400 g 5500 g
Rechargeable battery NiMH, 7.2V, 1200mA
Remote control (standard
equipment)
Remote control
Input Voltage
HFC-BA-e-1511 5
Service life (background lighting on) 25 h
Service life (background illumination OFF) 35 h
Loading time 8 h
Mains adapter: 100 – 240 V, 50 / 60 Hz
Appliance: 12 V, 500 mA
1.1 Dimensions
Balance 0.6 t / 1 t
Balance 3 t
6 HFC-BA-e-1511
Balance 5 t
Balance 10 t
HFC-BA-e-1511 7
Holding strap terminal
8 HFC-BA-e-1511
2. General Safety Instructions
2.1 Duties of the owner-operator Follow national accident prevention regulations and all operator health a nd
safety at work and operating regulations.
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. The customer is solely responsible for material damage and injury of persons
resulting from an improper use, Messrs. KERN & Sohn will not be liable under
any circumstance.
Messrs . KERN & Sohn cannot be held liable, if the suspended balance is
modified or used improperly and if damage is resulting from such use.
Carry out service and repair to suspended balance (see chap. 8.3), crane and
lifting tackle at regular intervals.
Log the test result and keep it in the logbook.
2.2 Organizational measures
Only trained and instructed staff may operate the balance.
Make sure that the operating instructions are kept nearby the operation site of the
suspended balance.
Assembly, commissioning and maintenance should only be carried out by trained
specialists.
Weight-bearing components must not be replaced
2.3 Environmental conditions
Never operate suspended balance in spaces exposed to explosion hazards. The
serial version is not explosion protected.
Operate the suspended balance only under environmental conditions as specified
in these operating instructions (especially in chapter 1 „Technical data“).
Do not expose the suspended balance to strong humidity. Non-permitted
condensation (condensation of air humidity on the appliance) may occur if a cold
appliance is taken to a considerably warmer environment. In this case,
acclimatize the disconnected appliance for ca. 2 hours at room temperature.
Do not use suspended balance in environments exposed to corrosion hazards.
Protect the suspended balance against high humidity, vapours and dust.
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.
HFC-BA-e-1511 9
2.4 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN
balances.
All language versions contain a non-binding translation.
The original German is binding.
2.5 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 suspended on the load receptor only vertically, manually,
carefully and without jerks. As soon as a stable weighing value is reached the
weighing value can be read.
Use the suspended balance only for lifting and weighing of freely movable loads.
Danger of injury due to improper use. Not allowed are e.g.:
- Exceeding the allowed nominal load of crane, suspended balance or any
type of load attachment devices
- Conveying persons,
- Pulling loads over an inclined surface,
- Tearing-off, pulling or towing loads.
Modifications or reconstructions of the suspended balance or of the crane are not
allowed.
2.6 Improper Use
Do not use balance for dynamic weighing. In the event that small quantities are
removed or added to the material to be weighed, incorrect weighing results can be
displayed due to the “stability compensation“. (Example: Slowly draining fluids from a
container suspended on the balance.) Do not leave permanent load suspended on
the balance. This may damage the measuring system as well as safety-relevant
parts.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
2.7 Warranty
Warranty claims shall be voided in case
Our conditions in the operation manual are ignored
The appliance is used outside the des cr i bed uses
The appliance is modified or opened
Mechanical damage and damage caused by media, liquids,
Natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
10 HFC-BA-e-1511
2.8 Saf e working
Do not stand under swinging loads, see chap. 5.1.
Position the crane in a way that the load is lifted vertically.
When working with the crane and suspended balance wear personal safety
equipment (helmet, safety shoes etc.).
2.9 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. In
KERN’s accredited DKD calibration laboratory test weights and balances may be
calibrated (return to the national standard) fast and at moderate cost.
2.10 Testing upon acceptance
Inspect packaging immediately upon receipt and inspect device when unpacking
(see chap. 4.1.) in the event of any evident damage.
2.11 Initial Commissioning
In order to obtain exact results w i th the electr o ni c balanc es, your bal a nc e must have
reached the operating temperature (see warming up time chap. 1).
During this warming up time the balance must be connected to the power supply
(mains, accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
For checking original dimensions, s. chap. 4.3
2.12 Shutdown and storage
Remove suspended balance from crane and remove all attachment devices from
the suspended balance.
Do not store suspended balance outdoors.
HFC-BA-e-1511 11
1
Anchor eyelet
5
Keyboard
2
ON/OFF switch
6
Antenna
3
Display
7
Hand loop
4
Battery charge
3. Appliance overview
12 HFC-BA-e-1511
status
Lifting tackle not included in scope of delivery.
Standardised attachment devices are to be used to attach
loads.
lb
3.1 Overview of display
Display Significance
Rechargeable battery capacity
M+ Totalization
STABLE Stability display
ZERO Zero indicator
Net The displayed weighing value is a net weighing value
kg
Radio link display unit
Indicators for weighing with tolerance range
N Weighing Units
balance
HFC-BA-e-1511 13
3.2 Keyboar d ove rview
Button Description of function
• Turn on/off balance
• Taring
• Scroll up/down menu
• For numeric entry increase value of digit
• Zeroing
• Confirm
• Switch-over weighing unit
• Exit menu / back to weighing mode.
• Totalization
• Select digits for numeric entry
• Change-over button between gross and net w ei g ht
• Delete total added memory
• Delete on numeric entry
• Fixing weight display see chap. 5.8
• Displaying peak load value see chap. 5.9
14 HFC-BA-e-1511
3.3 Label
(example)
Do not stand or go under suspended loads.
Do not use on building site.
Keep an eye on suspended loads.
Do not exceed nominal rated load of balance.
The product conforms to the requirements of the
German Equipment and Product Safety Act.
HFC-BA-e-1511 15
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