KERN & Sohn GmbH
Ziegelei 1
E-Mail: info@kern-sohn.com
Phone: +49-[0]7433- 9933-0
Internet: www.kern-sohn.com
Operating instructions
Electronic Suspended Balance
Logbook
Regular maintenance and care
KERN HCB / HCN
Version 4.1
09/2013
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
HCB / HCN-BA-e-1341
GB
KERN HCB / HCN
Electronic Suspended Balance
Version 4.1 09/2013
Operating instructi ons / l ogbook
Contents
1. Technical data ______________________________________________________________ 4
1.1 Dimensions ________________________________________________________________ 10
1.1.1 HCB ≤ 200 kg _______________________________________________________________ 10
1.1.2 HCB 05T-3 _________________________________________________________________ 11
1.1.3 HCB 1T-3 __________________________________________________________________ 12
1.1.4 Modelle HCN _______________________________________________________________ 13
1.1.5 Carbine and hook (models HCB ≤ 200 kg and models HCN) __________________________ 14
2. General S afety Instructions __________________________________________________ 15
2.1 Duties of the owner-operator ___________________________________________________ 15
2.2 Organizational measures ______________________________________________________ 15
2.3 Environmental conditions ______________________________________________________ 15
2.4 Pay attention to the instructions in the Operation Manual _____________________________ 16
2.5 Proper use _________________________________________________________________ 16
2.6 Improper Use _______________________________________________________________ 16
2.7 Warranty ___________________________________________________________________ 16
2.8 Safety-consci ous work ing _____________________________________________________ 17
2.9 Monitoring of Test Resources __________________________________________________ 17
2.10 Testing upon acceptance ______________________________________________________ 17
2.11 Initial Commissioning _________________________________________________________ 17
2.12 Shutdown and storage ________________________________________________________ 17
3. The sus pended balance at a glance ____________________________________________ 18
3.1 Overview __________________________________________________________________ 18
3.2 Overview visual displays and keyboard ___________________________________________ 21
3.3 Label______________________________________________________________________ 22
4. Commis s ioning ____________________________________________________________ 23
4.1 Unpacking _________________________________________________________________ 23
4.2 Scope of delivery ____________________________________________________________ 23
4.3 Checking the original dimensions _______________________________________________ 24
4.4 Battery operatio n ____________________________________________________________ 24
4.5 Suspending the balanc e _______________________________________________________ 25
5. Operation _________________________________________________________________ 26
5.1 Safety instructions ___________________________________________________________ 26
5.2 Loading the suspended balance ________________________________________________ 27
5.3 Turn on/off _________________________________________________________________ 30
5.4 Taring _____________________________________________________________________ 30
5.5 Weighing __________________________________________________________________ 30
5.6 Switch-over weighing unit _____________________________________________________ 31
5.7 Functions __________________________________________________________________ 31
6. Menu _____________________________________________________________________ 33
7. Adjus tment ________________________________________________________________ 34
HCB_HCN-BA-e-1341 2
8. Cleaning, Maintenance and Dis pos al ___________________________________________ 35
8.1 Cleaning and Disposal ________________________________________________________ 35
8.2 Regular maintenance and care _________________________________________________ 36
8.3 Checklist „regular maintenance“, (see chapter 8.2) __________________________________ 38
9. E nclos ure _________________________________________________________________ 41
9.1 Checklist „Enhanced maintenance“ (General revision) _______________________________ 41
9.2 List „spare parts and repair of safety-relevant parts“ _________________________________ 42
10. Declaration of -Conformity ___________________________________________________ 43
3 HCB_HCN-BA-e-1341
1. Technical data
KERN HCB 20K10 HCB 20K50 HCB 50K20
Readability (d) 10 g 50 g 20 g
Weighing range (max) 20 kg 20 kg 50 kg
Taring range (subtractive) 20 kg 20 kg 50 kg
Reproducibility 10 g 50 g 20 g
Linearity ±20 g ±100 g ±40 g
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Units kg, lb, N
Auto off 3 min
Allowable ambient
temperature
Ambient humidity (max ) 80 %
Battery
(in series)
10 kg (M3) 10 kg (M3) 20 kg (M3)
5…+35 °C
3 x 1.5 V AA
Running time rating 300 hrs
Display Digit height 12 mm
Housing size W x D x H 80 mm x 45 mm x 150 mm
Housing material Synthetic material
Hook and carbine material Stainlees steel
Net weight 400 g
HCB_HCN-BA-e-1341 4
KERN HCB 50K100 HCB 99K50 HCB 100K200
Readability (d) 100 g 50 g 200 g
Weighing range (max) 50 kg 99 kg 100 kg
Taring range (subtractive) 20 kg 20 kg 50 kg
Reproducibility 100 g 50 g 200 g
Linearity ±200 g ±100 g ±400 g
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Units kg, lb, N
Auto off 3 min
Allowable ambient
temperature
Ambient humidity (max ) 80 %
Battery
(in series)
20 kg (M3) 50 kg (M3) 50 kg (M3)
5…+35 °C
3 x 1.5 V AA
Running time rating 300 hrs
Display Digit height 12 mm
Housing size W x D x H 80 mm x 45 mm x 150 mm
Housing material Synthetic material
Hook and carbine material Stainlees steel
Net weight 400 g
5 HCB_HCN-BA-e-1341
KERN HCB 200K100 HCB 200K500
Readability (d) 100 g 500 g
Weighing range (max) 200 kg 200 kg
Taring range (subtractive) 200 kg 200 kg
Reproducibility 100 g 500 g
Linearity ± 200 g ± 1000 g
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Units kg, lb, N
Auto off 3 min
Allowable ambient
temperature
Ambient humidity (max ) 80 %
Battery
(in series)
100 kg (M3) 100 kg (M3)
5…+35 °C
3 x 1.5 V AA
Running time rating 300 hrs
Display Digit height 12 mm
Housing size W x D x H 80 mm x 45 mm x 150 mm
Housing material Synthetic material
Hook and carbine material Stainlees steel
Net weight 400 g
HCB_HCN-BA-e-1341 6
KERN HCB 0.5T-3 HCB 1T-3
Readability (d) 1 kg 2 kg
Weighing range (max) 500 kg 1000 kg
Taring range (subtractive) 500 kg 1000 kg
Reproducibility 1 kg 2 kg
Linearity ±1 kg ±4 kg
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Units kg, lb, N
Auto off 3 min
Allowable ambient
temperature
Ambient humidity (max) 80 %
Battery
(in series)
200 kg (M3) 500 kg (M3)
5…+35 °C
3 x 1.5 V AA
Running time rating 300 hrs
Display Digit height 12 mm
Housing size W x D x H 80 mm x 45 mm x 150 mm
Housing material Synthetic material
Suspension material Stainlees steel
Net weight 400 g
7 HCB_HCN-BA-e-1341
KERN HCN 20K50IP HCN 50K100IP
Readability (d) 50 g 100 g
Weighing range (max) 20 kg 50 kg
Taring range (subtractive) 20 kg 50 kg
Reproducibility 50 g 100 g
Linearity ±100 g ±200 g
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Units kg, lb, N
Auto off 3 min
Allowable ambient temperature 5…+35 °C
Ambient humidity (max ) 80 %
Battery (in series)
Display Digit height 12 mm
10 kg (M3) 50 kg (M3)
2 x 1.5 V AA
Running time rating 200 hrs
Housing size W x D x H 95 mm x 55 mm x 175 mm
Housing material Stainlees steel
Hook and carbine material Stainlees steel
Net weight 800 g
Dust and water splash
protection
HCB_HCN-BA-e-1341 8
IP 65
KERN HCN 100K200IP HCN 200K500IP
Readability (d) 200 g 500 g
Weighing range (max) 100 kg 200 kg
Taring range (subtractive) 100 kg 200 kg
Reproducibility 200 g 500 g
Linearity ± 400 g ± 1 kg
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Units kg, lb, N
Auto off 3 min
Allowable ambient temperature 5…+35 °C
Ambient humidity (max ) 80 %
Battery (in series)
Display Digit height 12 mm
50 kg (M3) 100 kg (M3)
2 x 1.5 V AA
Running time rating 200 hrs
Housing size W x D x H 95 mm x 55 mm x 175 mm
Housing material Stainlees steel
Hook and carbine material Stainlees steel
Net weight 800 g
Dust and water splash
protection
9 HCB_HCN-BA-e-1341
IP 65
1.1 Dimensions
1.1.1 HCB ≤ 200 kg
HCB_HCN-BA-e-1341 10
1.1.2 HCB 05T-3
11 HCB_HCN-BA-e-1341
1.1.3 HCB 1T-3
HCB_HCN-BA-e-1341 12
1.1.4 Modelle HCN
13 HCB_HCN-BA-e-1341
1.1.5 Carbine and hook (models HCB ≤ 200 kg and models HCN)
HCB_HCN-BA-e-1341 14
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.
• Inspect and service suspended balance, crane and load suspension devices
regularly (see chap. 8.3).
• Log the test result and keep it in the logbook.
2.2 Organizational measures
• Only trained and instructed staff may oper at e the bal ance.
• 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. Chang e lo cati on or
remove source of interference.
15 HCB_HCN-BA-e-1341
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
HCB_HCN-BA-e-1341 16
2.8 Safety-conscious 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 wh en unpacking, see
chap. 4.1. in the event of any evident damage.
2.11 Initial Commissioning
In order to obtain exact results with the electro ni c bala nc es, y our bal a nce must hav e
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.
17 HCB_HCN-BA-e-1341
3. The suspended balance at a glance
3.1 Overview
Models HCB ≤ 200 kg
1 Carbine with safety fastening
2 Display
3 Keyboard
4 Hooks
HCB_HCN-BA-e-1341 18
Models HCB ≥ 500 kg
Attachment devices are not included in scope of delivery with
models ≥ 500 kg.
Standardised attachment devices are to be used to attach loads.
1 Anchor eyelet
2 Display
3 Keyboard
19 HCB_HCN-BA-e-1341
Models HCN
Front view
Backview
1 Carbine with safety fastening
2 Display
3 Keyboard
4 Hooks
5 Second display
6 Battery compartment
HCB_HCN-BA-e-1341 20
3.2 Overview visual displays and keyboard
Key
Description
Description of function
• Switch on balance
• Scroll forward in menu
• Set weight display
• Con fir m menu s etti ng
Displays:
kg The current measuring unit is kilogram
lb The current measuring unit is pound
N The current measuring unit is Newton
Indicates the weight value depending on the active setting H1-H6
LO Capacity of batteries exhausted
E Overload
Keyboard:
(see chap. 5.7).
H1-H4: Data-Hold function
H5 Animal weighing function
H6 Peak value function
ON/OFF
button
• Switch off balance (hold button)
• Taring
21 HCB_HCN-BA-e-1341
UNIT-button Switch over weighing unit (kglbN)
HOLD button
• Display average value for animal weighing
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.
HCB_HCN-BA-e-1341 22
4. Commissioning
Thanks for your comprehension.
Your KERN Quality assurance team
• Suspended balance, see chap. 3.0
+ Always observe chapter 2 „General Safety Instructions“!
4.1 Unpacking
Once delivered and unpacked, suspended balance
cannot be returned.
SAFETY
INSTRUCTIONS
for protection against
break
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.
The suspended balance is sealed by KERN.
Carbine and hook are sealed.
Removal from packaging is also sealed.
+ Broken seal obliges to purchase.
Fig.: Seal
• Carbine, only models ≤ 200 kg
• Hook, only models ≤ 200 kg
• Batteries (models HCB: 3 x 1.5 V AA, models HCN : 2 x 1.5V AA)
• Operating instructions / logbook
23 HCB_HCN-BA-e-1341
4.3 Checking the original dimensions
Enter the original dimensions shown on the production data sheet in the grey
boxes of checklist chap. 8.3.
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 8.3)
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
CAUTION
4.4 Battery operation
please contact a service partner authorised by Messrs. KERN.
Models HCB Models HCN
3 x 1.5V AA batteries 2 x 1.5V AA batteries
If the batteries are empty, in the balance display appears “LO”. Press ON/OFF-key
and replace the 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.
HCB_HCN-BA-e-1341 24
4.5 Suspending the balance
Condition
The crane needs a safety bracket (1) that the unloaded suspended balance 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.
Attach the suspended balance on the lower hook of a crane and close the safety
bracket.
The crane scale’s upper eyelet should rest in the saddle (2).
25 HCB_HCN-BA-e-1341
5. Operation
Check all parts (hook, carbines, rings, rope slings,
If faults can be seen on the safety bracket of the crane
hook or if it is missing completely, the scales must not
any kind of shock, torsion and oscillating (e.g. caused
(example)
Do not exceed nominal rated load of crane, suspended
balance or any kind of attachment device on the
5.1 Safety instructions
DANGER
Risk of injury due to falling loads!
Take great care when operating the crane and follow the
general rules for crane operation.
cables, chains etc.) for excessive wear or damage
be used.
Work only with appropriate speed
Always avoid vibrations and horizontal forces. Avoid
by inclined suspending)
Do not use the suspended balance for conveying loads.
Do not stand or go under suspended loads.
Do not use on building site.
Keep an eye on suspended loads.
suspended balance.
HCB_HCN-BA-e-1341 26
5.2 Loading the suspended balance
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 one-
spot 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. Position the hook of the suspended balance over the load.
2. Move downwards the suspended balance until the load can be suspended on the
hook of the balance. Reduce the speed when the respective height is going to be
reached.
3. Suspend load on the attachment device. Ensure that all safety-relevant devi c es
are functional (e.g. the safety latch is closed). If the load is fixed by slings, ensure
that the slings rest completely on the saddle of the balance hook.
4. Lift-off the load slowly.
When the load is fixed by slings, ensure that the load is well balanced on both
sides and that the slings are correctly positioned
27 HCB_HCN-BA-e-1341
+ Always used the correct load attachment device, e.g. HCB 100K200
Only use attachment devices
which guarantee a one-point
suspension and where the
scales can be suspended freely.
Do not use too large attachment
devices which cannot guarantee
a one-point suspension.
HCB_HCN-BA-e-1341 28
Do not push or pull
Do not pull the hook horizontally
Do not use multiple suspensions
29 HCB_HCN-BA-e-1341
5.3 Turn on/off
Start-up
Press the ON/OFF key. The display lights up and the balance carries out a
selftest. The selftest is completed when the weight value 0 appears on the
display.
Switching Off
Press the ON/OFF key for a long time.
5.4 Taring
Suspend preload.
Press the TARE button, the zero display disappears. 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 the suspended balance and press the
TARE button.
5.5 Weighing
Load the suspended balance.
The weight value will be displayed at once.
Overload warning
Overloading exceeding the stated maximum load (max) of the balance, minus
a possibly existing tare load, must be strictly avoided. This could cause
damage to the balance.
Exceeding the maximum load is indicated by the display „E“. Unload balance
or reduce preload.
HCB_HCN-BA-e-1341 30
5.6 Switch-over weighing unit
The next measuring unit will be displayed kg lbN after each press of the UNIT
button. The indicator shows the active unit.
5.7 Functions
With help of the Hold-key the following functions can be activated:
Adjustment Function
H1 Data-Hold function 1
Weighing value frozen for 5 sec. after pressing
the Hold-key
H2 Data-Hold function 2
The weighing value will be frozen a fter pr es sing
the Hold-key until another key is actuated
+ see chap.
H3 Data-Hold function 3
The weighing value is automatically frozen for 5
sec.
H4 Data-Hold function 4
The weighing value is automatically frozen after
reaching a stable value until a key will be
actuated
H5 Animal weighing function
H6 Peak value functi on
5.7.1
+ see chap.
5.7.2
+ see chap.
5.7.3
31 HCB_HCN-BA-e-1341
5.7.1 Data-Hold function
Switch on the balance, keep the HOLD-key pressed until the current setting „Hx“
(H1 – H6) appears.
Press ON/OFF button repeatedly until the desired setting „H1-H4“ is displayed.
Confirm setting with the HOLD button.
Suspend the material to be weighed
The weight value is fixed and displayed depending on the setting (H1 – H4) (see
chap. 5.7), represented by the [] in the upper left.
5.7.2 Animal weighing function
This function is suitable for busy weighing procedures. The result is a mean value
formed by 16 weighing values which is found out within 3 seconds.
Switch on the balance, keep the HOLD-key pressed until the current setting „Hx“
(H1 – H6) appears.
Press ON/OFF button repeatedly until the setting „H5“ is displayed.
Confirm setting with the HOLD button.
Suspend the material to be weighed
Press the HOLD-key, the display counts reverse from 3 -1.
The calculated mean value is indicated, symbolised by the [] top left.
Before further measur eme nts pr es s fir st the ON/OFF/TARE-key.
HCB_HCN-BA-e-1341 32
5.7.3 Peak value function
This function displays the highest load value (peak value) of a weighing.
Measuring frequency: 200ms
Attention:
Never exceed the maximum permitted load of the peak value on the
balance (!!Danger of breaking!!).
Switch on the balance, keep the HOLD-key pressed until the current setting „Hx“
(H1 – H6) appears.
Press ON/OFF button repeatedly until the setting „H6“ is displayed.
Use the HOLD-key to confirm your selection
Suspend the material to be weighed
The peak value appears for a short time, symbolised by the [] top left. The
balance returns automatically to zero and is ready for further measureme nt .
6. Menu
When the balance is switched off, press the HOLD-key and keep it pressed
Do not release the HOLD-key. Press also the ON/OFF/TARE-key and keep it
pressed
Keep the ON/OFF/TARE-key pressed, however release the HOLD-key
Press HOLD-key anew
Keep both keys pressed until in the display “tr” appears
Release both keys. The balance is situated in the menu.
Using the ON/OFF/TARE button you can select between the following functions:
• tr (Zero tracking) : ON/OFF
• AF (Auto off): ON/OFF
• rST (reset to factory settings): YES / NO
Press the HOLD button to confirm the selected function
In the display appears the current setting „ON“ or „OFF“ resp. „YES“ or „NO“. You
can select between „ON“ or „OFF“ and/or „YES“ or „NO“ with the
ON/OFF/TARE button. Confirm your selection with the HOLD-key. After a short
period the balance returns automatically to weighing mode.
33 HCB_HCN-BA-e-1341
7. Adjustment
As the acceleration value due to gravity is not the same at every location on earth,
each balance must be coordinated - in compliance with the underlying physical
weighing principle - to the existing acceleration due to gravity at its place of location
(only if the balance has not already been adjusted to the location in the factory). This
adjustment process must be carri ed out f or the firs t co m miss i oning, after each
change of location as well as in case of fluctuating environment temperature. To
receive accurate measuring values it is also recommended to adjust the balance
periodically in weighing operation.
Observe stable environmental conditions. A warming up time of approx. 1 minute is
recommended for stabi li zation.
Prepare adjustment weight, for details see chap. 1 „Technical data“.
Switch-off balance and attach a carrying help if necessary.
Switching on balance with attached support aid.
Press Unit button and hold down (approx. 3 secs) until „CAL“ is displayed.
Wait until the weight value of the required adjustment weight (e.g. 10 kg, see
chap. 1) is displayed.
Attach adjustment weight, a short time later „F“ will appear.
After adjustment the balance automatically returns to weighing mode.
An adjusting error or incorrect adjusting weight will be indicated by the error
message; repeat adjustment procedure
HCB_HCN-BA-e-1341 34
8. Cleaning, Maintenance and Disposal
Risk of injury and risk of material damage!
The suspended balance is part of the lifting gear!
For a safe operation please observe the following:
Danger
Have carried out a regular maintenance by trained specialized
staff
Carry out regular maintenance and servicing, see chap. 8.3.
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.
Do not repair the suspended balance yourself. Repair may only be
carried out by service partners authorized by Messrs. KERN.
8.1 Cleaning and Disposal
Damage to suspended balance!
Do not use industrial solutions or chemicals
CAUTION
(e.g. acid embrittlement).
Clean the keyboard and the display with a soft cloth soaked in mild window
cleaning agent.
Disposal of packaging and appliance must be carried out by operator according to
valid national or regional law of the location where the appliance is used.
35 HCB_HCN-BA-e-1341
8.2 Regular maintenance and care
The regular 3-month maintenance may only be carried out by an expert with
competent knowledge of working with suspended balances. Thereby the nati onal
regulations for prevention of accidents as well as the working, operation and
safety regulations of the owner-operator.
To check the dimensions only use suitable test devices.
The regular 12-month maintenance must only be carried out by trained
specialized staff (KERN customer service).
The results of the maintenance must be written down in the checklist (chap. 8.3).
The additional results of the extended maintenance have to be entered in the
checklist (chapter 9.1).
The load suspension device is to be cleaned before inspection, see chap. 8.1.
Replaced parts (attachment device) must also be r ec or de d (ch ap. 9.2)
HCB_HCN-BA-e-1341 36
Regular maintenance:
Prior to each usage
• Check for fault-free operation of the attachment devices
documented by the service partner (see list, chap. 9.2).
weighings
Initial start-up,
every 3 months or
definitely after
12 500 weighing
processes
Every 12 m onths or
in any case after 50
000 weighings
Every 10 years or
anyway after 500,000
• Check all dimensions, see checklist chap. 8.3
• Check the attachment device for wear and tear, such as e.g.
plastic deformation, mechanical damage (unevenness),
notches, striation, cracks, corrosion, thread damage and
torsions.
• Check safety fastening on the attachment device for faults
and fault-free operation.
• Remove balance from use immediately if a reading exceeds
the permitted deviation from the original reading (see
checklist, chap. 8.3) or any other fault is identified.
• All repairs and replacement parts (e.g. hook) must be
• If the enhanced maintenance has to be carried out by
trained staff (KERN customer service). At this general
revision all load carrying parts must be checked for gaps
with magnetic powder
• Replace the crane scales entirely
Note
During the revision watch out for wear and tear according to the following drawin gs
(chap. 8.3).
Rejection criteria: Load suspension devices may no longer be used when e.g.
+ Deviations are identified during the inspections specified for servicing.
+ The type or load rating plate is missing.
+ Load suspension devices known to have been overloaded or subject to
other harmful influences may no longer be used and/or may be re-used only
after inspection.
37 HCB_HCN-BA-e-1341
k
8.3 Checklist „regular maintenance“, (see chapter 8.2)
Original dimensions suspended balance*, serial no.: ………………………………… Capacity ………………………………
Carbine Hooks Anchor eyelet spacing
a (mm) b (mm ) c (mm) d (mm)
Wear and
tear
e (mm) f (mm) g (mm) h (mm) i (mm) Wear and tear
Angle α (°)
k (mm)
Date ………………………………… Tester ………………………………………
*These data can be found in the document attached to the balance. Please keep this document always available.
Carbine Hooks
Safety
fastening
Perfect
working
order
e f g
1% 5 % 5 % 5 % 5 %
Max. admitted variation
Revision prior to first
use
3 months/12,500 x
6 months/25,000 x
9 months/37,500 x
12 months/50,000 x
15 months/62,500 x
18 months/75,000 x
21 months/87,500 x
a b c d
5 % 5 % 1 % 5 %
Wear
(see crosshatched areas)
No deformation
or cracks
h i
10 °
α
Wear
(see crosshatched areas)
No deformation
or cracks
Anchor eyelets
Distance
1%
Date Tester
HCB_HCN -BA-e-1341 38
k
Max. admitted variation
Revision prior to first
use
Carbine Hooks Anchor eyelets
a b c d
5 % 5 % 1 % 5 %
Wear
(see crosshatched areas)
No deformation
or cracks
Safety
fastening
Perfect
working
order
e f g
h i
1% 5 % 5 % 5 % 5 %
10 °
α
Wear (see
cross-hatched
areas)
No
deformation or
cracks
Distance
1%
Date Tester
24 months/100,000 x
27 months/112,500 x
30 months/125,000 x
33 months/137,500 x
36 months/150,000 x
39 months/162,500 x
21 months/87,500 x
42 months/175,000 x
45 months/187,500 x
48 months/200 000
51 months/212,500 x
54 months/225,000 x
57 months/237,500 x
60 months/250000x
All load carrying parts have to be exchanged by a service partner authorised by KERN.
bold letters = this maintenance work has to be carried out by a service partner authorized by KERN.
HCB_HCN -BA-e-1341 39
HCB_HCN -BA-e-1341 40
9. Enclosure
9.1 Checklist „Enhanced maintenance“ (General revision)
The enhanced maintenance has to be carried out by a service partner authorized by KERN.
Suspended Balance Model ………………………………….. Serial no. ……………………………………………..
Interval
12 months/50,000 x
24 months/100,000 x
36 months/150,000 x
48 months/200,000 x
60 months/250,000 x
72 months/300,000 x
84 months/350,000 x
96 months/400,000 x
108 months/450 000 x
120 months/500 000x
Magnetic powder
test for cracks
Replace suspended balance completely
Hooks Carbine Anchor eyelets Date Name Signature
HCB_HCN -BA-e-1341 41
9.2 List „spare parts and repair of safety-relevant parts“
Attachment device (hook, carbine)
Model ………………………………….. Serial no. ……………………………………………..
for suspended balance
Part Action Date Name Signature
HCB_HCN -BA-e-1341 42
10. Declaration of -Conformity
KERN & Sohn GmbH
D-72322 Balingen-Frommern
Tel: 0049-[0]7433- 9933-0
D
Konformitätserklärung
Wir erklären hierm it, dass das Produkt, auf das sich diese Erk lärung bezieht,
mit den nachstehenden Normen übereinstimmt.
GB
Declaration of
conformity
We hereby declare that the product to which this dec laration refers c onforms
with the following standards.
CZ
Prohlášení o
shode
Tímto prohlašujem e, že v ýrobek , k terého se toto proh lášení týká , je v souladu
s níže uvedenými normami.
E
Declaración de
conformidad
Manifestamos en la presente que el producto al que se refiere esta
declaración está de acuerdo con las normas siguientes
F
Déclaration de
conformité
Nous déclarons avec cela res ponsabilité que le produit, auquel se r apporte la
présente déclaration, est conforme aux normes citées ci-après.
I
Dichiarazione di
conformitá
Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si
riferisce è conforme alle norme di seguito citate.
NL
Conformiteitverklaring
Wij verklaren hiermede dat het product, waarop deze verklaring betrekking
heeft, met de hierna vermelde normen overeenstemt.
P
Declaração de
conformidade
Declaramos por meio da presente que o produto no qual se refere esta
declaração, corresponde às normas seguintes.
PL
Deklaracja
zgodności
Niniejszym oświadczamy, że produkt, którego niniejsze oświadczenie dotyczy,
jest zgodny z poniższymi normami.
RUS
Заявление о
соответствии
Мы заявляем, что продукт, к которому относится данная декларация,
соответствует перечисленным ниже нормам.
EU Directive
Standards
Signature
Datum
10.07.2013
Ort der Ausstellung
72336 Balingen
Albert Sauter
KERN & Sohn GmbH
Geschäftsführer
Managing director
KERN & Sohn GmbH, Ziegelei 1, D-72336 Balingen, Tel. +49-[0]7433/9933-0
Fax +49-[0]7433/9933-149, E-Mail: info@kern-sohn.com, Internet: www.kern-sohn.com
Postfach 4052
E-Mail: info@kern-sohn.de
Fax: 0049-[0]7433-9933-149
Internet: www.kern-sohn.de
Konformitätserklärung
EG-Konformitätserklärung EC-Declaration of -Conformity
EC-
Déclaration de conformité EC-Declaración de Conformidad
EC-Dichiarazione di conformità EC-Conformiteitverklaring
EC- Declaração de conformidade EC- Prohlášení o shode
EC-Deklaracja zgodności EC-Заявление о соответствии
Electronic Balan ce: KERN HCB/ HCN
2004/108/EC EN 61326-1: 2006
EN 61326-2-1:2006
2006/95/EC EN 61010-1:2010
2006/42/EC EN 13155/A2:2009
Date
Place of issue
HCB_HCN -BA-e-1341
Signatur
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