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 HTS-A
Version 3.0
11/2014
GB
D-72336 Balingen
Fax: +49-[0]7433-9933-149
HTS-A-BA-e-1430
GB
KERN HTS-A
Electronic Crane Scales
Version 3.0 11/2014
Operating instructions / logbook
Contents
1. Technical data ______________________________________________________________ 4
1.1 Dimensions (mm) __________________________________________________________________ 5
2. General Safety Instructions ___________________________________________________ 6
2.1 Duties of the owner-operator _________________________________________________________ 6
2.2 Organizational measures ____________________________________________________________ 6
2.3 Environmental conditions ____________________________________________________________ 6
2.4 Proper use ________________________________________________________________________ 7
2.5 Improper Use ______________________________________________________________________ 7
2.6 Warranty __________________________________________________________________________ 7
2.7 Safe working_______________________________________________________________________ 8
2.8 Monitoring of Test Resources ________________________________________________________ 8
2.9 Testing upon acceptance ____________________________________________________________ 8
2.10 Initial Commissioning _______________________________________________________________ 8
2.11 Shutdown and storage ______________________________________________________________ 8
3. The crane scales at a glance __________________________________________________ 9
3.1 Overview __________________________________________________________________________ 9
3.2 Display __________________________________________________________________________ 10
3.3 Keyboard ________________________________________________________________________ 10
3.5 Infrared remote control unit _________________________________________________________ 11
3.6 Label ____________________________________________________________________________ 12
4. Commissioning ____________________________________________________________ 13
4.1 Unpacking ________________________________________________________________________ 13
4.2 Installing a precision fuse ___________________________________________________________ 13
4.3 Checking the original dimensions ____________________________________________________ 14
4.4 Rechargeable battery operation _____________________________________________________ 14
4.5 Suspending the balanc e ____________________________________________________________ 15
HTS_A-BA-e-1430 2
5. Operation _________________________________________________________________ 16
5.1 Safety instruct ions _________________________________________________________________ 16
5.2 Loading the crane scales ___________________________________________________________ 17
5.3 Turn on/off _______________________________________________________________________ 20
5.4 Set balance to zero ________________________________________________________________ 21
5.5 Taring ___________________________________________________________________________ 22
5.6 Weighing _________________________________________________________________________ 22
5.7 Gross / net invocation ______________________________________________________________ 22
5.8 Display backgr ound il lumination _____________________________________________________ 22
7. Adjustment and verification __________________________________________________ 23
7.1 Adjustment _______________________________________________________________________ 23
7.2 Verification _______________________________________________________________________ 24
8. Error messages ____________________________________________________________ 25
9. Cleaning and Disposal_______________________________________________________ 25
9.1 Cleaning and Disposal _____________________________________________________________ 25
10. Maintenance and repair ______________________________________________________ 26
10.1 Regular maintenance and care ______________________________________________________ 26
10.2 Regular maintenance ______________________________________________________________ 27
10.3 Checklist „Regular maintenance“, (see chapter 10.2) ___________________________________ 28
11. Enclosure _________________________________________________________________ 31
11.1 Checklist „Enhanced maintenance“ (General revision) __________________________________ 31
11.2 List „spare parts and repair of safety-relevant parts“ ____________________________________ 32
3 HTS_A-BA-e-1430
1. Technical data
Block battery 9V
Range approx. 10 m
KERN
Readability (d) 500 g 1 kg 2 kg 5 kg
Weighing range (max) 1 500 kg 3 000 kg 6 000 kg 10 000 kg
Taring range (subtractive) 1 000 kg 3 000 kg 6 000 kg 10 000 kg
Minimum weight (min) 10 kg 20 kg 40 kg 100 kg
Verification value (e) 500 g 1 kg 2 kg 5 kg
Verification class III
Reproducibility 500 g 1 kg 2 kg 5 kg
Linearity ± 1 kg ± 2 kg ± 4 kg ± 10 kg
Recommended adjustment
weight, not added (class)
Stabilization time 2 s
Warm-u p time 10 min
Unit kg
Allowable ambient temperature -20…+50 °C
Relative humidity 10 to 95 %, non-condensing
HTS 1T-4AM HTS 3T-3AM HTS 6T-3AM HTS 10T-3AM
1.5 t (M2) 3 t (M2) 6 t (M2) 10 t (M2)
Input voltage Appliance 110V - 230V AC
Input voltage Mains adapter 9V, 800 mA
6 V 3.2 A
Rechargeable battery
(standard equipment)
Display Digit height 25 mm
Housing size W x D x H,
(mm)
Housing material Alu casting, varnished
Material hooks and shackle Forg ed steel
Net weight (kg) 6.5 8.5 12.0 20.0
Infra red remote cont rol unit
(standard equipment)
270x175x200 270x175x200 300x190x230 300x190x230
Service life 100 h (background light on)
Loading time 12 h
48 x 16 x 95 mm (W x D x H)
HTS_A-BA-e-1430 4
1.1 Dimensions (mm)
A B C D E F
HTS 1T-4AM
HTS 3T-3AM
HTS 6T-3AM
HTS 10T-3AM
37 29 32.5 314.6 12.7
56 47 42.5 346.75 17.5
60 55 54 440 24.6
79 61 58 535.35 35
33.3
42.9
58
82.6
5 HTS_A-BA-e-1430
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 crane scales are modified or
used improperly and if damage is resulting from such use.
Inspect and service crane balance, crane and load suspension devices regularly
(see chap. 10).
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
crane scales.
Assembly, commissioning and maintenance should only be carried out by trained
specialists.
Repair of safety-relevant pieces may only be carried out by KERN or by service
partners authorized by Messrs. KERN. (competence certificate or training).
Use original spare parts only.
All repairs and spare parts must be documented by the service partner (see list,
chap. 11.2).
All maintenance must be documented (see checklist chap. 10.3).
Load suspending components may only be exchanged as a complete spare parts
set. The dimensions of the new components must be noted (see checklist chapter
10.3).
2.3 Environmental conditions
Never operate the crane scales in explosive environment. The serial version is
not explosion protect e d.
Operate the crane scales only under environmental conditions as specified in
these operating instructions (especially in chapter 1 „Technical data“).
Do not expose the crane scales 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 operate the crane scales in corrosive environment.
Protect the crane scales against high humidity, vapours and dust.
HTS_A-BA-e-1430 6
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 locat ion or
remove source of interference.
2.4 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 crane hook only vertically, manually,
carefully and without jerks. As soon as a stable weighing value is reached the
weighing value can be read.
Use the crane scales 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, crane scales or any type of
load attachment devic es
- Conveying persons,
- Pulling loads over an inclined surface,
- Tearing-off, pulling or towing loads.
Modifications or reconstructions of the crane scales or of the crane are not
allowed.
2.5 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.
2.6 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
7 HTS_A-BA-e-1430
2.7 Safe working
Do not stand underneath suspended loads!
Position the crane in a way that the load is lifted vertically.
When working with the crane and crane scales wear personal safety equipment
(helmet, safety shoes etc.).
2.8 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.
2.9 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
2.10 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. 4.2
2.11 Shutdown and storage
Take off the crane scales from the crane and dismantle all load attachment
devices from the crane scales.
Do not store the crane scales at open air
HTS_A-BA-e-1430 8
3. The crane scales at a glance
Balance
1
Shackle
2
Display
3
Keyboard
4
Safety bracket
5
Hook, not rev olva ble
Infrared remote contro l unit
Keyboard, see chapter 3.4
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 infrared remote control, operation will be more comfortable yet.
3.1 Overview
9 HTS_A-BA-e-1430
3.2 Display
Button
Description of function
3.3 Keyboard
1 Indicator net weight
2 Indicator zero display
3 Indicator gross weight
4 Stability display
5 Battery charge display
• Zeroing
• Taring
HTS_A-BA-e-1430 10
• Gross weight Net weight
• Background illumination of the display on/off
• Turn on/off balance
3.5 Infrared remote control unit
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 r e mo te cont r ol must be exchanged.
Range on free surface (free of buildings) approx. 10 m.
Point the remote control at the balance.
„ON“
„OFF“ Set balance into stand-by mode
Zeroing
Switching on only possible during
standby mode of the balance.
Taring
Gross weight Net weight
11 HTS_A-BA-e-1430
3.6 Label
Do not stand or go under sus pended loads.
Do not use on building site.
Keep an ey e on suspended loads.
D o not exceed nominal load of crane scales.
(example)
The produc t conforms to the requirements of the
German Equipment and Product Safety Act.
HTS_A-BA-e-1430 12
4. Commissioning
+
Thanks for your comprehension.
Your KERN Quality assurance team
Attention: Always observe chapter 2 „General Safety Instructions“!
4.1 Unpacking
Once delivered and unpacked, crane scales will not be
taken back.
SAFETY
INSTRUCTIONS
for protection against
break
The crane scales have been sealed by Messrs. KERN.
Shackles and hooks are sealed by Sella tape.
The packaging is also sealed by adhesive tape.
Broken seal obliges to purchase.
The crane scales are compact and quite heavy.
Remove the scales from packaging only with the help of
a second person.
Danger for the back!
Only use original packaging for returning.
Use a lifting device such as a crane or a forklift truck.
Secure the scales that they cannot fall down when they
are lifted.
Make sure that all parts are completely present.
• Crane scales
• Mains adapter
• Precision fuse
• Remote control
• Operating instructions (logbook)
4.2 Installing a precision fuse
Prior to starting up the balance insert the fuse as shown on the image below.
Remove the fuse for longer transport or when balance is not in use.
13 HTS_A-BA-e-1430
Material damage on crane scales
4.3 Checking the original dimensions
Enter the original dimensions shown on the production data sheet in the grey
boxes of checklist chap. 10.3.
Check original dimension of crane scales; for implementation see chap. 10.2
„Regular Maintenance“
Enter all data (date, tester, results) in the first line under „Inspection before first
use“ in the checklist (see chapter 10.3)
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
please contact a service partner authorised by Messrs. KERN.
CAUTION
4.4 Rechargeable battery operation
Only use the delivered mains adapter.
Make sure that the mains adapter, the cable and the
CAUTION
mains plug are in a perfect condition.
Do not use the crane scales during the loading process.
Before the first use, the rechargeable battery should be charged by connecting it to
the mains power cable for at least 24 hours. The operating time of the rechargeable
battery is approx. 100 hours.
If the capacity of the rechargeable battery is exhausted, „LOb“ appears. The balance
will be ready to operate for about another 10 minute, then it will switch off
automatically. Connect the power cable as soon as possible to load the rechargeable
battery.
When the crane scales are out of operation for a longer period, remove the
rechargeable battery.
HTS_A-BA-e-1430 14
4.5 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).
15 HTS_A-BA-e-1430
5. Operation
Check all parts (hook, eyelet, rings, rope slings, cables,
faults can be seen on the safety bracket of the hook
or if it is missing completely, the scales must not be
any kind of shock, torsion and oscillating (e.g. caused
5.1 Safety instructions
Danger
Take great care when operating the crane and follow the
If
Risk of injury due to falling loads!
general rules for crane operation.
chains etc.) for excessi ve wear or damage
used
Work only with appropriate speed
Always avoid vibrations and horizontal forces. Avoid
by inclined suspending)
Do not use the crane scales for transporting loads.
D o not stand or go under suspended loads.
D o not use on building site.
HTS_A-BA-e-1430 16
Keep an ey e on suspended loads.
or any kind of load attachment devices at the crane
Do not exceed the nominal load of crane, crane scales
scales.
(example)
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 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 crane scales over the load.
2. Move downwards the crane scales 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 the load on the hook. Ensure that the safety bracket 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
17 HTS_A-BA-e-1430
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.
HTS_A-BA-e-1430 18
Do not push or pull
Do not pull the hook
horizontally
19 HTS_A-BA-e-1430
Do not use multiple
suspensions
5.3 Turn on/off
8.8.8.8.8
Check LCD segments
CH .9
Battery loading status (example: CH .9 corresponds to a battery
loading status of 90%
8985
Check number
Start-up
Press on the keyboard of the balance. The display lights up and the balance
carries out a selftest. The display runs through “PoUP2„ESC2“„8.8.8.88“,
followed by the battery loading status (e.g. “CH5“ corresponds to a battery loading
status of 50%) and the check number o f adju s tme nts . The selftest is completed
when the weight value 0 appears on the display.
Battery loading status:
The battery loading status is represented in the form of “CH .x“, such as
This corresponds to a battery loading status of 90%.
Check number:
For verified balances pay attention to check number!
The check number will be shown after the balanc e has bee n t ur ned on. This
number will be adjusted automatically after each adjustment activity. In
verified balances this number is an integral part for conformity evaluation.
This allows you to check at any time whether new adjustment has been
carried out.
To display the check number, turn the balance off and then restart it with . The
display shows successively e.g.:
• Switching on/off only possible on the keyboard of the balance.
• Using the remote control unit, the balance can only be switched on from
the standby mode.
HTS_A-BA-e-1430 20
Switching Off
Press on the keyboard of the balance.
or
Press on the keyboard of the remote control unit, the balance is in standby
mode.
5.4 Set balance to zero
In order to obtain optimal weighing results, reset to zero the balance before weighing.
Unload the balance
Press .
In the display appears 0 (kg) and the indicator next to a lights up.
21 HTS_A-BA-e-1430
5.5 Taring
Suspend preload.
Wait for stability display, then press . In the display appears 0 (kg) and the
indicator next to „NET“ appears. 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 balance and press .
5.6 Weighing
Loading the crane scales.
The weight value will be displayed at onc e.
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 „--OL-“. Unload
balance or reduce preload.
5.7 Gross / net invocation
By repeated pressing of , change between gross and net display values.
In the „Gross weight“ display the indicator appears next to GROSS.
In the „Net weight“ display the indicator appears next to NET.
5.8 Display background illumination
Press , the display will appear backlit.
Press again, the background illumination of the display will extinguish.
HTS_A-BA-e-1430 22
7. Adjustment and verifica tion
• The weight to be used depends on the capacity of the scale. Carry
chapter 1) is required for stabilization.
7.1 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 carried out for the first commissioning, 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.
Models with type approval
The adjustment procedure is described in separate instructions. They can be found
under http://www.kern-sohn.com.
out adjustment as near as possible to the scale’s maximum weight.
Info about test weights can be fou nd on the Internet at:
http://www.kern-sohn.com.
• Observe stable environmental conditions. A warming up time (see
23 HTS_A-BA-e-1430
8.8.8.8.8
Check LCD segments
CH .9
Battery loading status (example: CH .9 corresponds to a battery
loading status of 90%
8985
Check number
7.2 Verification
General introduction:
According to EU directive 2009/23/EC balances must be officially verified if they are
used as follows (legally controlled area):
a) For commercial transactions if the price of goods is determined by weighing.
b) For the production of medicines in pharmacies as well as for analyses in the
medical and pharmaceutical laboratory.
c) For official purposes
d) For manufacturing final packages
In cases of doubt, please contact your local trade in standard.
Verification notes:
An EU type approval exists for balances described in their technical data as
verifyable. If a balance is used where obligation to verify exists as described above, it
must be verified and re-verified at regular intervals.
Re-verification of a balance is carried out according to the respective national
regulations. The validity for verification of balances in Germany is e.g. 2 years.
The legal regulation of the country where the balance is used must be observed!
Verification of the balance is invalid without the seal.
The seal marks attached on balances with type approval point out that the
balance may only be opened and serviced by trained and authorised
specialist staff. If the seal mark is destroyed, verification looses its validity.
Please observe all national laws and legal regulations. In Germany a reverification will be necessary.
For verified balances pay attention to check number!
The check number will be shown after the balance has been turned on. This
number will be adjusted automatically after each adjustment activity. In
verified balances this number is an integral part for conformity evaluation.
This allows you to check at any time whether new adjustment has been
carried out.
To display the check number, turn the balance off and then restart it with .
The display shows successively e.g.:
The verification is not valid, when the check number of the system does not match
with the check number on the type plate.
HTS_A-BA-e-1430 24
8. Error messages
Error
message
Description
Possible causes
Reduce load
been damaged
Capacity of rechargeable
minute.
--ol- Maximum load exceeded
battery exhausted.
LOb
Should other error messages occur, switch balance off and then on again. If the error
message remains inform manufacturer.
In the „LOB“ display, the
balance switches off
automatically to save the
rechargeable battery after 1
Check w hether t he balance has
Recharge battery
9. Cleaning and Disposal
9.1 Cleaning and Disposal
Damage on the crane balance!
CAUTION
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.
Do not use any industrial solutions or chemicals
25 HTS_A-BA-e-1430
Risk of injury and risk of material damage!
10. Maintenance and repair
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
10.2 and 10.3
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 crane scales by yourself. Repair may only be
carried out by service partners authorized by Messrs. KERN.
10.1 Regular maintenance and care
The regular 3-month maintenance may only be carried out by an expert with
competent knowledge of working with crane scales. Thereby the national
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. 10.3).
The additional results of the extended maintenance have to be entered in the
checklist (chapter 11.1).
The replaced spare par ts also mus t be ent er e d, (cha pter 11.2)
HTS_A-BA-e-1430 26
10.2 Regular maintenance
Check the application of the safety bracket on the hook,
partner (see list, chap. 11.2).
processes
processes
Initial start-up,
every 3 months or
definitely after
12 500 weighing
processes
Every 12 m onths or
in any case after
50 000 weighing
processes
Check all dimensions, see checklist chap. 9.2
Check the shackle for wear and tear, such as e.g. plastic
deformation, mechanical damage (unevenness), notches,
striation, cracks, corrosion, thread damage and torsions.
moreover check for fault and corr ect f uncti o n
Check that the split pin and the nut on the shackle are not
loose
If a dimension exceeds the admitted deviation from the original
dimension (see checklist, chap. 10.3) or if other discrepancies
have been found, the balance must be repaired at once by
trained specialized staff (KERN customer service). Never do
repair it by yourself!
Take balance out of operation immediately!
All repairs and spare parts must be documented by the service
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
Every 5 years or
anyway after
250 000 weighing
Every 10 years or
anyway after
500 000 weighing
Note
During the revision watch out for wear and tear according to the following drawings
(chap. 10.3).
All load carrying parts have to be exchang ed by trained
specialized staff (KERN customer service).
Replace the crane balance entirely
27 HTS_A-BA-e-1430
f
g (∅)
h (∅)
10.3 Checklist „Regular maintenance“, (see chapter 10.2)
Original dimensions suspended balance*, serial no.: ………………………………… Capacity ………………………………
Shackle Hooks Anchor eyelets
a (mm) b (mm) c (mm)
Wear and
tear
Split pin&Nut d (mm) e (mm)
Wear and
tear
Angle α (°)
f (mm ) g (mm) h (mm)
Date ………………………………… Tester ………………………………………
*These data can be found in the document attached to the balance. Please keep this document always available.
Shackle Hooks Anchor eyelets
Split pin&
Nut
tight
d e
10% 5 %
α
10 °
Wear and tear (see
grey fields)
No deformation or
cracks
1% 1% 1%
Date Tester
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
5 % 0% 5 %
Wear and tear
(see grey fields)
No deformation or
cracks
HTS_A-BA-e-1430 28
Shackle Hooks Anchor eyelets
Max. admitted variation
Revision prior to first
use
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
42 months/175,000 x
48 months/200 000
51 months/212,500 x
54 months/225,000 x
a b c
5 % 0% 5 %
Wear and tear
(see grey fields)
No deformation or
cracks
Split pin&
Nut
tight
d e
10% 5 %
α
10 °
Wear and tear (see
grey fields)
No deformation or
cracks
f
g (∅) h (∅)
1% 1% 1%
Date Tester
57 months/237,500 x
60 months/250 000x
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.
HTS_A-BA-e-1430 29
HTS_A-BA-e-1430 30
11. Enclosure
11.1 Checklist „Enhanced maintenance“ (General revision)
The enhanced maintenance has to be carried out by a service partner authorized by KERN.
Crane scales 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 crane scales entirely
Shackle Hooks Anchor eyelets Date Name Signature
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11.2 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. ……………………………………………..
Part Action Date Name Signature
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Crane scales Model ………………………………….. Serial no. ……………………………………………..
Part Action Date Name Signature
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