Kern HUM 1000K500, HUM 3000K100, HUS150K50, HUS300K100, HUS600K200 User guide
KERN & Sohn GmbH
Ziegelei 1
E-Mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Internet: www.kern-sohn.com
Instruction Manual
Electronic Crane Scales
Logbook
Regular maintenance and care
KERN HUS/HUM
GB
Version 3.1
11/2011
D-72336 Balingen
Fax: +49-[0]7433-9933-149
HUS/HUM-BA-e-1131
KERN HUS/HUM
Electronic Crane Scales
GB
Version 3.1 11/2011
Operating instructions / logbook
Contents
1. Technical data _________________________________________________ 4
1.1 Dimensions (mm) _____________________________________________________ 6
2. General S afety Instructions ______________________________________ 7
3. The crane scales at a glance ____________________________________ 10
3.1 Overview __________________________________________________________ 10
3.2 Display ____________________________________________________________ 12
3.3 Keyboard __________________________________________________________ 13
3.4 Radio remote control _________________________________________________ 14
3.5 Label ______________________________________________________________ 15
4. Commis sioning _______________________________________________ 16
4.1 Unpacking _________________________________________________________ 16
4.2 Checking the original dimensions ________________________________________ 16
4.3 Power supply - rechargeable battery mode ________________________________ 17
4.4 Suspending the balance _______________________________________________ 18
5. Operation KERN HUM __________________________________________ 19
5.1 Safety instructions ___________________________________________________ 19
5.2 Loading the crane scales ______________________________________________ 21
5.3 Turn on/off _________________________________________________________ 24
5.4 Set balance to zero __________________________________________________ 24
5.5 Taring _____________________________________________________________ 25
5.6 Weighing __________________________________________________________ 25
5.7 Record weight value (freeze) ___________________________________________ 26
5.8 Automatic switch-off (AU T O OF F ) _______________________________________ 26
6. Operation KERN HUS __________________________________________ 28
6.1 Safety instructions ___________________________________________________ 28
6.2 Loading the crane scales ______________________________________________ 30
6.3 Turn on/off _________________________________________________________ 33
6.4 Set balance to zero __________________________________________________ 33
6.5 Taring _____________________________________________________________ 34
6.6 Weighing __________________________________________________________ 34
6.7 Record weight value (freeze) ___________________________________________ 35
6.8 Automatic switch-off (AU T O OF F ) _______________________________________ 35
2 HUS/HUM-BA-e-1131
7. Adjus tment ___________________________________________________ 37
7.1 KERN HUM ________________________________________________________ 37
7.2 KERN HUS _________________________________________________________ 39
8. Error mes sages _______________________________________________ 40
9. Cleaning, Maintenance and Disposal ______________________________ 40
9.1 Cleaning and Disposal ________________________________________________ 40
9.2 Regular maintenance and care _________________________________________ 41
9.3 Checklist „regular maintenance“, (see chapter 9.2) __________________________ 42
9.4 KERN HUM ________________________________________________________ 42
9.5 KERN HUS _________________________________________________________ 45
10. E nclos ure ____________________________________________________ 48
10.1 Checklist „Enhanced maintenance“ (General revision) _______________________ 48
10.2 List „spare parts and repair of safety-relevant parts“ _________________________ 49
11. Declaration of Conformity _______________________________________ 51
HUS/HUM-BA-e-1131 3
1. Technical data
Remote control (standard
KERN HUM 1000K500 HUM 3000K100
Readability (d) 500 g 1 kg
Weighing range (max) 1 000 kg 3 000 kg
Taring range (subtractive) 1 000 kg 3 000 kg
Reproducibility 500 g 1 kg
Linearity ±1 kg ±2 kg
Recommended adjustment
weight, not added (class)
Possible Adjustment Poi nts 500 kg; 1 t 1 t; 2 t
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Unit kg
Allowable ambient
temperature
Relative humidity 0 to 85 %, non-condensing
Input Voltage
Secondary voltage
powerpack
Rechargeable battery
(standard equipment)
1 t (M3) 2 t (M3)
0…+40 °C
100 ∼ 240VAC
12VDC, 500 mA
Output 6 V 10 Ah
Service life 80 h
Loading time 8 h
Display Digit height 25 mm
Housing size W x D x H,
(mm)
Housing material Metal, lacquered
Material hooks and shackle Painted steel
Net weight (kg) 16 18
equipment)
4 HUS/HUM-BA-e-1131
210 x 228 x 180
1 battery (23A, 12V) included
Output 6 V 4.5 Ah
Remote control (standard
KERN HUS150K50 HUS300K100 HUS600K200
Readability (d) 0.05 kg 0.1 kg 0.2 kg
Weighing range (max) 150 kg 300 kg 600 kg
Taring range (subtractive) 150 kg 300 kg 600 kg
Reproducibility 0.05 kg 0.1 kg 0.2 kg
Linearity ± 0 .1 kg ±0.2 kg ±0.4 kg
Recommended adjustment
weight, not added (class)
Possible Adjustment Points 40 kg; 100 kg 100 kg; 200 kg 200 kg; 400 kg
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 10 min
Unit kg
Allowable ambient
temperature
Relative humidity 0 to 85 %, non-condensing
Input Voltage
Secondary voltage
powerpack
100 kg (M3) 200 kg (M3) 2x200 kg (M3)
0…+40 °C
100 ∼ 240VAC
9VDC, 500 mA
Rechargeable battery
(standard equipment)
Display Digit height 23 mm
Housing size W x D x H,
(mm)
Housing material Plastic
Material hooks and shackle Painted steel
Net weight (kg) 4.0 18
equipment)
HUS/HUM-BA-e-1131 5
Service life 120 h
Loading time 8 h
150 x 145 x 160
2 x 1.5 V AAA included
1.1 Dimensions (mm) KERN HUS KERN HUM
HUS150K50
HUS300K100
HUS600K200
A B C D
24 14 330 380
24 14 330 380
24 14 350 400
HUM 1000K500
HUM 3000K100
A B C D
56 42 550 620
73 45 580 650
6 HUS/HUM-BA-e-1131
2. General Safety Instructions
Duties of the owner-operator
Follow the national accident prevention regulations as well as the working, operating
and safety regulations of the owner-operator.
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.
Carry out regular maintenance and care of the crane scales, the crane and the
load suspension devices (see chapter 9).
Log the test result and keep it in the logbook.
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. 10.2).
All maintenance must be documented (see checklist chap. 9.3).
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
9.3).
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-permitte d c ond ens ation
(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.
HUS/HUM-BA-e-1131 7
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 loc ati on or
remove source of interference.
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.
Improper Use
Do not use balance for dynamic weighings. 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.
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
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.).
8 HUS/HUM-BA-e-1131
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.
Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
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
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
HUS/HUM-BA-e-1131 9
3. The crane scales at a glance
5
Hook, rev olvable
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 radio remote control, operation will be more comfortable yet.
3.1 Overview
KERN HUS
10 HUS/HUM-BA-e-1131
1 Eyelet
2 Display
3 Keyboard
4 Safety bracket
6 For radio remote control, s. chap. 3.4
KERN HUM
1
Shackle
2 Antenna
3 Display
4 Keyboard
5 Safety bracket
6 Hook, revolvable
7 For radio remote control, s. chap. 3.4
HUS/HUM-BA-e-1131 11
3.2 Display
1. KERN HUS
• The indicator appears next to ZERO when weight is around Zero point
range.
• The indicator appears next to TARE after scales have been tared.
• The indicator next to „kg“ shows that the weight unit currently
displayed is „kg“.
2. KERN HUM
• The LED above ZERO is illuminated when weight is around Zero point range.
• The LED above TARE is illuminated after scales have been tared.
• The LED above ZERO is illuminated when the weight unit currently displayed
is „kg“.
12 HUS/HUM-BA-e-1131
3.3 Keyboard
• Taring
• Select me nu s etti ng s
• Record weight value (freeze)
• Taring
• Record weight value (freeze)
1. KERN HUS
Taste Funktionsbeschreibung
ON/ZERO
TARE
MODE
HOLD
OFF
• Turn on the balance
• Select function in menu
• Turn on or off backli ght
• Exit menu
• Turn off the balance
2. KERN HUM
Key Description of function
ZERO
TARE
MODE
HOLD
POWER
HUS/HUM-BA-e-1131 13
• Zeroing
• Select function in menu
• Select menu sett ings
• Exit menu
• Turn on or off the balance
3.4 Radio remote control
Standby mode
The balance can be operated by the radio remote control like by a keyboard. All
functions (excepted POWER ON/OFF) can be selected.
The LED should light up each time a key is pressed. If it does not light up, the
batteries in the remote control must be exchanged.
1. HERN HUS
Range on free surface (free of buildings) approx. 2.5 m.
Key
Remote
control
POWER ON/ZERO
ZERO ON/ZERO Zeroing
TARE
MODE MODE
HOLD
2. HERN HUM
Range on free surface (free of buildings) approx. 25 m.
Corresponding
key on scales
TARE Taring
HOLD
Function
Weighing mode
Select menu settings
Turn on or off backlight
Record weight value
(freeze)
14 HUS/HUM-BA-e-1131
Key
Remote
control
Z
T
M
H
Corresponding
key on scales
ZERO Zeroing
TARE Taring
MODE Select menu settings
HOLD
Function
Record weight value
(freeze)
3.5 Label
Do not exceed nominal load of crane scales.
(Example)
The product conforms to the requirements of the
German Equipment and Product Safety Act.
HUS/HUM-BA-e-1131 15
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
CAUTION
Danger for the back!
Only use original packaging for returning.
Make sure that all parts are completely present.
• Crane scales
• Rechargeable battery
• Mains adapter
• Remote control
• Operating instr uctions (logbook)
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.
Use a lifting device such as a crane or a forklift truck.
Secure the scales that they cannot fall down when they
are lifted.
4.2 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 crane scales; for implementation see chap. 9.2
„Regular Maintenance“
Enter all data (date, tester , res ult s) in the fir st line under „Inspection before first
use“ in the checklist (see chapter 9.3)
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
16 HUS/HUM-BA-e-1131
please contact a service partner authorised by Messrs. KERN.
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