KERN & SOHN HFA 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 HFA
Version 1.1
01/2015
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
HFA-BA-e-1511
KERN HFA
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 ______________________________________ 8
2.1 Duties of the owner-operator ___________________________________________ 8
2.2 Organizational measures ______________________________________________ 8
2.3 Environmental conditions ______________________________________________ 8
2.4 Pay attention to the instructions in the Operation Manual ___________________ 9
2.5 Proper use ___________________________________________________________ 9
2.6 Improper Use ________________________________________________________ 9
2.7 Warranty ____________________________________________________________ 9
2.8 Safe working ________________________________________________________ 10
2.9 Monitoring of Test Resources _________________________________________ 10
2.10 Testing upon acceptance _____________________________________________ 10
2.11 Initial Commissioning _________________________________________________ 10
2.12 Shutdown and storage ________________________________________________ 10
3. Appliance overview ____________________________________________ 11
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 HFA-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 ______________________________________________________________ 25
5.6 Weighing ___________________________________________________________ 26
5.7 Switch-over weighing unit _____________________________________________ 26
5.8 Hold weighing value (Data-HOLD function) ______________________________ 27
5.9 Peak value function (peak func ti o n) ____________________________________ 27
5.10 Weighing with tolerance range _________________________________________ 28
5.11 Automatic switch-off function (auto-off) _________________________________ 30
6. Menu ________________________________________________________ 30
6.1 Navigation in the menu: _______________________________________________ 30
6.2 Overview ___________________________________________________________ 31
7. Adjustment ___________________________________________________ 32
8. Linearization __________________________________________________ 34
8.1 Linearization ________________________________________________________ 34
8.2 Carry out linearization ________________________________________________ 35
9. Cleaning, Maintenance and Disposal ______________________________ 37
9.1 Cleaning and Disposal ________________________________________________ 37
9.2 Regular maintenance and care ________________________________________ 38
9.3 Checklist „regular maintenance“, (see chapter 9.2) _______________________ 39
10. Enclosure ____________________________________________________ 41
10.1 Checklist „Enhanced maintenance“ (General revision) ____________________ 41
HFA-BA-e-1511 3
1. Technical data
KERN HFA 600K-1 HFA 1T-4 HFA 3T-3
Readability (d) 0.2 kg 0.5 kg 1 kg
Weighing range (max) 600 kg 1000 kg 3000 kg
Taring range (subtractive) 599.8 kg 999.5 kg 2999 kg
Reproducibility 0.2 kg 0.5 kg 1 kg
Linearity ± 0 .4 kg ± 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
600 kg (M3) 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) 30 h
Service life (background illumination OFF) 30 h
Rechargeable battery NiMH
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 1700 g
4 HFA-BA-e-1511
KERN HFA 5T-3 HFA 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
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) 30 h
Service life (background illumination OFF) 30 h
Rechargeable battery NiMH
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 3900 g 5500 g
HFA-BA-e-1511 5
1.1 Dimensions
Balance 0.6 t / 1 t
Balance 3 t
6 HFA-BA-e-1511
Balance 5 t
Balance 10 t
HFA-BA-e-1511 7
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. 9.3), 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 fi elds ( e.g . due to mobi l e phones or radio equipment), static
electricity accumulations or instable power supply occur. Change location or
remove source of interference.
8 HFA-BA-e-1511
2.4 Pay attention to the instructions in the Operation Manual
Carefully read this oper ati on ma nual 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 described 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
HFA-BA-e-1511 9
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 with the electronic balances, your balance 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.
10 HFA-BA-e-1511
3. Appliance overview
Lifting tackle not included in scope of delivery.
Standardised attachment devices are to be used to attach loads.
1 Anchor eyelet
2 Display
3 Keyboard
HFA-BA-e-1511 11
Rear
Battery or rechargeable battery
compartment
Mains connection
12 HFA-BA-e-1511
3.1 Overview of display
Display Significance
Rechargeable battery capacity
Indicators for weighing with tolerance range
M+ Totalization
STABLE Stability display
ZERO Zero indicator
Net The displayed weighing value is a net weighing value
OZT
Lb
kg
Weighing Units
HFA-BA-e-1511 13
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