KERN & SOHN VFS 2T1 User Manual
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
Operating instructions
Pallet truck scales
KERN VFS
Version 1.1
10/2011
GB
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
VFS-BA-e-1111
GB
KERN VFS
Version 1.1 10/2011
Contents
1 Technical data................................................................................................ 4
2 Basic instructions about weighing system................................................. 5
2.1 Proper use.................................................................................................................................. 5
2.2 Improper Use.............................................................................................................................. 6
2.3 Warranty..................................................................................................................................... 6
2.4 Monitoring of Test Resources ....................................................................................................6
3 Basic safety notes about weighing system................................................. 7
3.1 Pay attention to the instructions in the Operation Manual ......................................................... 7
3.2 Personnel training ...................................................................................................................... 7
4 Transport and storage................................................................................... 7
4.1 Testing upon acceptance........................................................................................................... 7
4.2 Packaging / return transport....................................................................................................... 7
5 Unpacking, Setup and Commissioning ....................................................... 8
5.1 Assembly of the pallet truck scale..............................................................................................8
5.1.1 Drawbar...................................................................................................................................... 8
5.1.2 Display unit............................................................................................................................... 10
5.2 Proper use of the lifting device................................................................................................. 12
5.3 Installation site, location of use of the weighing system .......................................................... 12
5.4 Scope of delivery......................................................................................................................14
5.5 Rechargeable battery operation...............................................................................................15
5.5.1 Rechargeable battery installation.............................................................................................15
5.6 Commissioning.........................................................................................................................16
5.7 Appliance overview .................................................................................................................. 17
5.8 Overview of display ..................................................................................................................18
5.9 Keyboard overview...................................................................................................................19
Operating instructions Pallet truck scale
6 Adjustment................................................................................................... 20
6.1 Zero-setting ..............................................................................................................................20
6.2 Performance of adjustment......................................................................................................21
7 Functions of display unit ............................................................................ 22
7.1 Prior to weighing....................................................................................................................... 22
7.1.1 Zero-point check....................................................................................................................... 22
7.1.2 Net weighing: Taring by button................................................................................................. 22
7.2 Weighing................................................................................................................................... 23
7.2.1 Gross - net weighing ................................................................................................................ 23
7.2.2 Net weighing.............................................................................................................................23
7.3 Weighing units switch-over....................................................................................................... 23
7.4 Totalization...............................................................................................................................24
7.5 Numerical tare input (PRETARE)............................................................................................. 26
7.5.1 Enter tare weight ......................................................................................................................26
7.5.2 Call-up stored tare weight ........................................................................................................ 27
7.5.3 Delete pretare value................................................................................................................. 27
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8 Printer........................................................................................................... 27
8.1 Paper change........................................................................................................................... 29
9 Menu ............................................................................................................. 30
9.1 Navigation in the menu............................................................................................................. 30
9.2 Menu overview .........................................................................................................................31
10 Service, maintenance, disposal.................................................................. 34
10.1 Clean ........................................................................................................................................34
10.2 Service, maintenance...............................................................................................................34
10.3 Disposal....................................................................................................................................34
11 Error messages............................................................................................ 35
12 Instant help................................................................................................... 36
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1 Technical data
KERN VFS 2T1
Readability (d) 1 kg
Weighing range (max) 2000 kg
Reproducibility 1 kg
Linearity ± 2 kg
Warm-up time 10 min
Recommended
adjustment weight (not
added) class
Allowable ambient
temperature
Humidity of air
Weighing Units kg, lb, oz
Electric Supply 220V-240V AC 50Hz
Rechargeable battery
Auto Off Options: 0, 3, 5, 15, 30 min
Net weight 125 kg
Fork height
Operating period background illumination OFF: 60h
0° C .... + 40° C
(not condensing)
Loading time: 15 h
1,5 t
(M1)
max. 95 %
6V 10 Ah
max: 200 mm
min: 85 mm
LCD-display
cipher height
4
52 mm
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Dimensions in mm:
2 Basic instructions about weighing system
2.1 Proper use
The weighing system 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 manually and carefully placed in the centre of the
loading fork. As soon as a stable weighing value is reached the weighing value can
be read.
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2.2 Improper Use
Do not use the weighing system 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“ in the weighing system.
(Example: Slowly draining fluids from a container on the weighing system.)
Do not leave permanent load on the loading fork. This may damage the measuring
system.
Impacts and overloading exceeding the stated maximum load (max) of the weighing
system, minus a possibly existing tare load, must be strictly avoided. The weighing
system could be damaged.
Never operate the weighing system in an explosive environment. The serial version is
not explosion protected.
Changes to the weighing system's design are not permitted. This may lead to
incorrect weighing results, safety-related faults and destruction of the weighing
system.
The weighing system unit may only be operated in accordance with the described
default settings. Other areas of use must be released by KERN in writing.
2.3 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
2.4 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
weighing system 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.
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3 Basic safety notes about weighing system
3.1 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.
3.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
4 Transport and storage
4.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
4.2 Packaging / return transport
• Keep all parts of the original packaging for a possibly
required return.
• Only use original packaging for returning.
• Prior to dispatch disconnect all cables and remove
loose/mobile parts.
• Reattach possibly supplied transport securing devices.
• Secure all parts such as the glass wind screen, the weighing
platform, power unit etc. against shifting and damage.
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5 Unpacking, Setup and Commissioning
5.1 Assembly of the pallet truck scale
5.1.1 Drawbar
The drawbar is delivered separated from the hydraulic lifting device. Prior to
commissioning the two components must be connected to each other. Details see
below.
Ö Turn out screw for hydraulic
adjustment
Ö Pass the draw chain of the drawbar through the opening and after that through
the bolt in the pallet truck scale
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Ö Insert rod at the lower end of the
draw chain at the oblong hole of
the hydraulic lever till to the
stopper
Ö Fix the grab handle using 3
screws
Ö To start-up the lifting mechanism
screw down the adjustment screw
till to the preset stopper
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5.1.2 Display unit
Ö Loosen the screws at the side
Ö Display unit will be assembled to
the shown position
Ö For assembly ensure that the
cable is properly passed and not
damaged.
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Ö Screw-in 3 screws
Ö Again screw-in the side screws
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