KERN HFA Series User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating manual
Electronic Crane Scales
Logbook
Regular maintenance and care
KERN HFA
Version 1.2
11/2016
GB
HFA-BA-e-1612

2 HFA-BA-e-1612
GB
KERN HFA
Version 1.2 11/2016
Operating instructions / logbook
Electronic Suspended balance
Contents
1. Technical data _________________________________________________4
1.1 Dimensions ____________________________________________________6
1.2 Nameplate _____________________________________________________8
1.3 EC-Declaration of -Conformity______________________________________9
2. General Safety Instructions _____________________________________10
2.1 Duties of the owner-operator ______________________________________10
2.2 Organizational measures_________________________________________10
2.3 Environmental conditions_________________________________________10
2.4 Pay attention to the instructions in the Operation Manual ________________11
2.5 Proper use____________________________________________________11
2.6 Improper Use__________________________________________________11
2.7 Warranty _____________________________________________________11
2.8 Safe working __________________________________________________12
2.9 Monitoring of Test Resources _____________________________________12
2.10 Testing upon acceptance_________________________________________12
2.11 Initial Commissioning____________________________________________12
2.12 Shutdown and storage___________________________________________12
3. Appliance overview ____________________________________________13
3.1 Overview of display _____________________________________________15
3.2 Keyboard overview _____________________________________________16
3.3 Label ________________________________________________________17
4. Commissioning _______________________________________________18
4.1 Unpacking ____________________________________________________18
4.2 Scope of delivery _______________________________________________18
4.3 Checking the original dimensions __________________________________19
4.4 Battery / rechargeable battery operation _____________________________19
4.6 Suspending the balance _________________________________________22
5. Operation ____________________________________________________23
5.1 Safety instructions ______________________________________________23
5.2 Loading the suspended balance ___________________________________24
5.3 Turn on/off ____________________________________________________27
5.4 Set balance to zero _____________________________________________27
5.5 Taring________________________________________________________27
5.6 Weighing _____________________________________________________28
5.7 Switch-over weighing unit ________________________________________28
5.8 Hold weighing value (Data-HOLD function)___________________________29
5.9 Peak value function (peak function)_________________________________29
5.10 Weighing with tolerance range_____________________________________30
5.11 Automatic switch-off function (auto-off) ______________________________32

HFA-BA-e-1612 3
6. Menu ________________________________________________________32
6.1 Navigation in the menu:__________________________________________32
6.2 Overview _____________________________________________________33
7. Adjustment___________________________________________________34
8. Linearization__________________________________________________36
8.1 Linearization __________________________________________________36
8.2 Carry out linearization ___________________________________________37
9. Cleaning, Repair, Maintenance and Disposal _______________________39
9.1 Cleaning and Disposal___________________________________________39
9.2 Regular maintenance and care ____________________________________40
9.3 Checklist „regular maintenance“, (see chapter 9.2)_____________________41
10. Enclosure ____________________________________________________43
10.1 Checklist „Enhanced maintenance“ (General revision) __________________43

4 HFA-BA-e-1612
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) 600 kg (M3) 1000 kg (M3) 3000 kg (M3)
Stabilization time 2 s
Warm-up time 10 min
Units kg, lb, N
Auto off 10 min
Allowable ambient
temperature 5…+35 °C
Ambient humidity (max) 80 %
Input Voltage Power supply unit 100 – 240 V, 50 / 60 Hz
Device 9 V, 800 mA
Battery 3 x 1.5 V AA
Service life (background illumination OFF) 30 h
Rechargeable battery NiMH Service life (background illumination OFF) 30 h
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 1700 g

HFA-BA-e-1612 5
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) 3000 kg (M3) 10000 kg (M3)
Stabilization time 2 s
Warm-up time 10 min
Units kg, lb, N
Auto off 10 min
Allowable ambient
temperature 5…+35 °C
Ambient humidity (max) 80 %
Input Voltage Power supply unit 100 – 240 V, 50 / 60 Hz
Device 9 V, 800 mA
Battery 3 x 1.5 V AA
Service life (background illumination OFF) 30 h
Rechargeable battery NiMH Service life (background illumination OFF) 30 h
Loading time 12 h
Display Digit height 2.3 cm
Housing material Steel
Net weight 3900 g 5500 g

6 HFA-BA-e-1612
1.1 Dimensions
Balance 0.6 t / 1 t
Balance 3 t

HFA-BA-e-1612 7
Balance 5 t
Balance 10 t

8 HFA-BA-e-1612
1.2 Nameplate
1
KERN Logo
2
Model designation
3
Weighing range [Max]
4
Data for power supply
5
Company address
6
Readability [d]
7
Date of manufacture
8
CE mark
9
Disposal symbol
0 Serial number

HFA-BA-e-1612 9
1.3 EC-Declaration of -Conformity
KERN & Sohn GmbH
www.kern-sohn.com
Ziegelei 1
72336 Balingen-Frommern
Germany
+0049-[0]7433-9933-0
+0049-[0]7433-9933-149
[e-mail]
Déclaration de conformité UE | EU Declaration of Conformity | EU-Konformitätserklärung
FR Nous déclarons par la présente sous notre entière responsabilité que le produit concerné par cette
déclaration respecte les exigences des directives mentionnées ci-après.
EN We hereby declare and assume sole responsibility for the declaration that the product complies with the
directives hereinafter.
DE Wir erklären hiermit unter alleiniger Verantwortung, dass das Produkt, auf das sich diese Erklärung bezieht,
mit den nachstehenden Richtlinien übereinstimmt.
Type | Type | Typ
Nº de série | Serial no. | Seriennr.
HFA 600K-1K50
HFA 1T-4
HFA 3T-3
HFA 5T-3
HFA 10T-3
xxxxxxxxxx
Marquage CE
Mark applied
CE Kennzeichnung
Directive UE
EU directive
EU-Richtlinie
Normes
Standards
Normen
2006/42/EC
(MD) EN 13155:2003/A2:2009
2014/30/EU
(EMC)
EN 55022:2010
EN 55024:2010
EN 61000-3-3:2013
2014/35/EU
(LVD) EN 60065:2014
EN 60950-1:2006/A2:2013
Date | Date | Datum:
06.10.2016
Lieu de délivrance:
Place of issue:
Ort der Ausstellung:
72336 Balingen,
Germany
Albert Sauter
KERN & Sohn GmbH
Signature:
Signature:
Signatur:
Directeur Exécutif
Managing director
Geschäftsführer
Further language versions you will find online under:
www.kern-sohn.com/ce

10 HFA-BA-e-1612
2. General Safety Instructions
2.1 Duties of the owner-operator
Follow national accident prevention regulations and all operator health and
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 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.

HFA-BA-e-1612 11
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 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

12 HFA-BA-e-1612
2.8 Safe 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.

HFA-BA-e-1612 13
3. Appliance overview
1 Anchor eyelet
2 Display
3 Keyboard
Lifting tackle not included in scope of delivery.
Standardised attachment devices are to be used to attach loads.

14 HFA-BA-e-1612
Rear
Battery or rechargeable battery
compartment Mains connection

HFA-BA-e-1612 15
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

16 HFA-BA-e-1612
3.2 Keyboard overview
Button Description of function
•Taring
•Zeroing
•Exit menu / back to weighing mode.
•Switch-over weighing unit
•Scroll up/down menu
•For numeric entry increase value of digit
•Set readability (options: 1d/2d/5d/10d/20d)
•Set weight display
•Set peak load
•Confirm
•Switch over weighing unit (kglbN)
•Select digits for numeric entry
•Turn on/off balance

HFA-BA-e-1612 17
3.3 Label
Do not stand or go under suspended loads.
Do not use on building site.
Keep an eye on suspended loads.
(example)
Do not exceed nominal rated load of balance.
The product conforms to the requirements of the
German Equipment and Product Safety Act.

18 HFA-BA-e-1612
4. Commissioning
+Always observe chapter 2 „General Safety Instructions“!
4.1 Unpacking
SAFETY
INSTRUCTIONS
for protection against
break
Once delivered and unpacked, suspended balances will
not be taken back.
The crane scales have been sealed by Messrs. KERN.
Removal from packaging is also sealed.
+Broken seal obliges to purchase.
Fig.: Seal
Thanks for your comprehension.
Your KERN Quality assurance team
4.2 Scope of delivery
Remove balance and accessories from packaging, remove packaging material.
Verify that there has been no damage and that all packing items are present.
•For crane see chap. 3.0
•Rechargeable battery (3 x 1.5 V AA)
•Operating instructions / logbook

HFA-BA-e-1612 19
4.3 Checking the original dimensions
Enter the original dimensions shown on the production data sheet in the grey
boxes of checklist chap. 9.3.
Check original dimension of suspended balance; for implementation see chap.
8.3 „Regular Maintenance“
Enter all data (date, tester, results) in the first line under „Inspection before first
use“ in the checklist (see chapter 9.3)
CAUTION
If the dimensions of your first safety inspection do not match those
of KERN, the balance must not be put into operation. In this case
please contact a service partner authorised by Messrs. KERN.
4.4 Battery / rechargeable battery operation
Battery operation:
When batteries are empty, will appear on the balance’s display
Press and replace batteries.
Open battery compartment, replace batteries and close battery compartment again.
In order to save the battery, the balance switches automatically off after 4 minutes
without weighing. This auto-off function can be deactivated in the menu, see chap. 6.
When the suspended balance is out of operation for a longer period, remove the
batteries.
Unscrew battery / rechargeable battery
compartment in the direction of the
arrow.
Replace batteries and relock battery /
rechargeable battery compartment.

20 HFA-BA-e-1612
Accu operation:
When the rechargeable battery is empty, appears on the balance’s display.
Turn off balance and connect power supply unit; battery is charged.
Once the battery has been fully charged the display will show the symbol.
Insert rechargeable battery:
Unscrew battery compartment in arrow
direction.
Remove batteries including battery
mount from the device.