KERN FCF User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Compact balance
KERN FCF
Version 1.1
08/2016
GB
FCF-BA-e-1611

2 FCF-BA-e-1611
GB
KERN FCF
Version 1.108/2016
Operating instructions
Compact balance
Contents
1Technical data................................................................................................ 4
2Basic Information (General).......................................................................... 5
2.1 Intended use ............................................................................................................................. 5
2.2 Improper Use ............................................................................................................................ 5
2.3 Warranty.................................................................................................................................... 5
2.4 Monitoring of Test Resources................................................................................................. 5
3Basic Safety Precautions.............................................................................. 6
3.1 Pay attention to the instructions in the Operation Manual.................................................. 6
3.2 Personnel training.................................................................................................................... 6
4Transport and storage................................................................................... 6
4.1 Testing upon acceptance ........................................................................................................ 6
4.2 Packaging.................................................................................................................................. 6
5Unpacking, Setup and Commissioning ....................................................... 6
5.1 Installation Site, Location of Use............................................................................................ 6
5.2 Unpacking/installation............................................................................................................. 7
5.3 Mains connection..................................................................................................................... 7
5.4 Operation using a rechargeable battery (optional)............................................................... 8
5.5 Initial Commissioning .............................................................................................................. 9
5.6 Adjustment................................................................................................................................ 9
5.7 Adjustment................................................................................................................................ 9
6Operating elements ..................................................................................... 11
6.1 Overview of display................................................................................................................ 11
6.2 Keyboard overview................................................................................................................. 11

FCF-BA-e-1611 3
7Basic Operation ........................................................................................... 12
Start-up................................................................................................................................................. 12
Switching Off ....................................................................................................................................... 12
Weighing............................................................................................................................................... 12
Taring.................................................................................................................................................... 12
PRE-TARE function............................................................................................................................. 13
Plus/minus weighings......................................................................................................................... 14
Parts counting ..................................................................................................................................... 15
Net-total weighings ............................................................................................................................. 16
Percent determination......................................................................................................................... 17
8Menu ............................................................................................................. 18
8.1 Navigation in the menu.......................................................................................................... 18
8.2 Menu overview........................................................................................................................ 21
8.3 Description of individual menu items .................................................................................. 22
Weighing Units .................................................................................................................................... 22
Dosing and Zero-tracking................................................................................................................... 24
Selection adjustment weight.............................................................................................................. 25
Display background illumination....................................................................................................... 26
Animal weighing function................................................................................................................... 27
Reset to factory setting...................................................................................................................... 28
9Servicing, maintenance, disposal .............................................................. 29
9.1 Cleaning .................................................................................................................................. 29
9.2 Servicing, maintenance ......................................................................................................... 29
9.3 Disposal................................................................................................................................... 29
10 Instant help................................................................................................... 30
11 Declaration of Conformity........................................................................... 31

4 FCF-BA-e-1611
1 Technical data
KERN FCF 3K-4 FCF 30K-3
Readability (d) 0.1 g 1 g
Weighing range (max) 3 kg 30 kg
Taring range (subtractive) 3 kg 30 kg
Reproducibility 0.1 g 1 g
Linearity 0.3 g 3 g
Minimum unit weight at
piece counting 0.2 g 2 g
Warm-up time 2 hours 2 hours
Reference quantities at
piece counting 5, 10, 20,25, 50
Weighing Units Details „Weighing units“, see chap. 8.3
Recom. adjustment weight, not
added (class)
Details about „Selection of
adjustment weight“ see chap. 9.3
3 kg (M1) 30 kg (M1)
Stabilization time (typical) 3 sec.
Operating temperature + 5° C ... + 35° C
Humidity of air max. 80 % (not condensing)
Housing (B x D x H) mm 270 x 323 x 110
Weighing plate mm 253 x 229
Weight kg (net) 2.6

FCF-BA-e-1611 5
2 Basic Information (General)
2.1 Intended 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 manually and carefully placed in the centre of the weighing
pan. As soon as a stable weighing value is reached the weighing value can be read.
2.2 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 on the balance). Do not leave permanent load on the weighing pan. This
may damage the measuring system. Impacts and overloading exceeding the stated
maximum load (max) of the balance, minus a possibly existing tare load, must be
strictly avoided. Balance may be damage by this.
Never operate balance in explosive environment. The serial version is not explosion
protected.
The structure of the balance may not be modified. This may lead to incorrect
weighing results, safety-related faults and destruction of the balance.
The balance may only be used according to the described conditions. 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
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.

6 FCF-BA-e-1611
3 Basic Safety Precautions
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
Keep all parts of the original packaging in case you need to return the appliance.
Only use original packaging for returning.
Before sending, disconnect all connected cables and loose/movable parts.
Attach possibly existing transport safeguards. Secure all parts, e.g. weighing plate,
mains adapter etc., to prevent slipping and damage.
5 Unpacking, Setup and Commissioning
5.1 Installation Site, Location of Use
The balances are designed in a way that reliable weighing results are achieved in
common conditions of use.
You will work accurately and fast, if you select the right location for your balance.
Therefore, observe the following for the installation site:
•Place the balance on a firm, level surface;
•Avoid extreme heat as well as temperature fluctuation caused by installing next to
a radiator or in the direct sunlight;
•Protect the balance against direct draughts due to open windows and doors;
•Avoid jarring during weighing;
•Protect the balance against high humidity, vapours and dust;
•Do not expose the device to extreme dampness for longer periods of time. 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.
•Avoid static charge of goods to be weighed and weighing container.

FCF-BA-e-1611 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 location or remove
source of interference.
5.2 Unpacking/installation
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
The balance must be installed in a way that the weighing plate is exactly in horizontal
position.
•Place the balance on a horizontal and solid base.
•Remove the transport security on the 4-point support.
•Pull off the protection foil from the weighing plate if existing.
•Attach the weighing plate.
Scope of delivery / serial accessories
•Balance
•Weighing pan
•Transport Securing
•Mains adapter
•Protective cover
•Operating instructions
5.3 Mains connection
Power is supplied via the external mains adapter. The stated voltage value must be
the same as the local voltage.
Only use original KERN mains adapters. Using other makes requires consent by
KERN.

8 FCF-BA-e-1611
5.4 Operation using a rechargeable battery (optional)
Lift-off the battery cover on the lower side of the balance. Connect 9 V compound
battery. Replace the battery compartment cover.
1
Rechargeable battery compartment
2
Battery compartment
For battery / rechargeable battery operation the balance has an automatic switch-off
function which can be activated or deactivated in the menu (see chapter 8).
Keep pressed in the weighing mode until “Unit” is displayed.
Press , „AF“ will be displayed.
Press , the setting made as last will be displayed, e.g. „on“.
Use now to select between the following two settings:
„AF on“:
In order to save the battery, the balance switches automatically
off after 3 minutes without weighing.
„AF off“:
Switch-off function deactivated.
Acknowledge selection by . The balance returns to weighing mode.
The finished setting is now enabled.

FCF-BA-e-1611 9
If the batteries are exhausted, „LO“ is displayed; press and replace the
batteries immediately.
If the balance is not used for a longer time, take out the batteries and store them
separately. Leaking battery liquid could damage the balance.
If there exists an optional rechargeable battery, it has to be connected in the
rechargeable battery compartment via a separate plug-in socket. Load rechargeable
battery via the delivered plug-in power supply unit.
5.5 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.
5.6 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.
5.7 Adjustment
The adjustment should be made with the recommended adjustment weight (see
chap. 1 "Technical data"). Adjustment is also possible with the weights of other
nominal values (see table 1), but not the optimum for measuring technique.
Procedure when adjusting:
Observe stable environmental conditions. A warming up time (see chapter 1) is
required for stabilization.

10 FCF-BA-e-1611
Start balance by pressing .
Press and hold down , the display shows "CAL" briefly. After that the
size of the adjustment weight appears flashing in the display.
Now set the adjusting weight in the centre of the weighing plate.
Press . Short time later there appears „CAL F“, then the automatic
return to the weighing mode. In the display there appears the value of the
adjustment weight. Adjustment has now been completed successfully.
An error during adjustment or the use of an incorrect adjusting weight will
result in an error message „CAL E“. Repeat adjustment.
Keep the adjustment close to the balance. Daily control of the weighing exactness is
recommended for quality-relevant applications.

FCF-BA-e-1611 11
6 Operating elements
6.1 Overview of display
6.2 Keyboard overview
Button Designation Function
ON-button •Start-up
MENU button •Confirm settings in the menu
•Save and exit menu
MODE/CAL
button
•Select menu items
•Change settings in the menu
•Adjustment
SET/M button •Acknowledge menu item
•Return to weighing mode
TARE button •Taring

12 FCF-BA-e-1611
7 Basic Operation
Start-up
Press .
The balance will carry out a self-test As soon as the
weight display appears, the balance is ready for
weighing.
Switching Off
Press again, the display will extinguish
Weighing Place goods to be weighed on balance.
Wait for standstill control, after the standstill control, the
weighing unit appears right hand in the display
(e.g. g or kg)
Read weighing result.
If the goods are heavier than the weighing range, the display
will show "Error" (=Overload), and a whistle is sounded.
Taring
Place an empty weighing container, the weight of the
weighing container will be displayed.
Press , the zero display appears. The tare weight
is saved until it is deleted.
8888
0.0
g
0.0
g
10.0
g
0.0
g

FCF-BA-e-1611 13
Weigh the material, the net weight will be indicated.
The taring process can be repeated any number of times,
e.g. when adding several components for a mixture
(adding). The limit is reached when the whole weighing
range is exhausted.
After removing the weighing container, the weight of the
weighing container appears as negative display.
The tare weight is saved until it is deleted.
Delete tare
Unload the balance and press , the zero display
appears.
PRE-TARE
function
Using this function the weight of a tare vessel is stored. Even
after turning off/on the weighing balance will continue working
with the saved tare value.
In weighing mode put tare vessel on the weighing plate
Press repeatedly until „PtArE“ will appear flashing.
Use to save the current weight on the weighing plate
as a PRE-TARE value.
Delete PRE-TARE
value
Remove all loads from the balance and press
repeatedly until „PtArE“ will appear flashing.
Acknowledge with . The PRE-TARE value is deleted,
the zero display appears.
47.2
g
0.0
g

14 FCF-BA-e-1611
Plus/minus
weighings
For example unit weight control, fabrication control etc.

Put the nominal weight on the weighing plate and tare using
.
Remove the nominal weight
Put the specimens subsequently on the weighing plate, the
respective deviation from the nominal weight is displayed
with the respective sign to „+“ and „-“.
According to the same procedure also packages with the
same weight can be produced, referring to a nominal
weight.
Back to weighing mode by pressing the button.

FCF-BA-e-1611 15
Parts counting
During piece counting parts can either be counted into a
container or out of a container.
To count a greater number of
parts the average weight per part has to be determined with a
small quantity (reference quantity).
The larger the reference quantity, the higher the counting
exactness.
High reference must be selected for small parts or
parts with considerably different sizes.
The larger the reference quantity, the more accurate the parts
counting.
The process has four steps:
Tare the weighing container
Determine the reference unit
Original weighing of reference weight
Count the items
In weighing mode press . Reference piece number
„5PCS“appears flashing.
By pressing several times other reference quantities
10, 20, 25 and 50 can be called up. Place as many pieces
to count on the weighing plate as the set reference quantity
requires.
Acknowledge with . The balance is now in parts
counting mode counting all units on the weighing plate.
•Return to weighing mode
Press .
•Error message „Er 1“
Piece below minimum weight of piece, see chap. 1
“Technical data”; press and restart Reference
determination.
•Taring
The tare vessels can also be used for piece counting. Before
starting piece counting use to tare out the tare
container.

16 FCF-BA-e-1611
Net-total
weighings
It is useful if a mixture of several components is weighed into a
tare vessel and finally the sum weight of all weighed
components is necessary for control purposes (net-
total, i.e.
the weight of the tare vessel).
Example:
1. Place tare container on the weighing plate; press ,
the zero display appears.
2. Weigh-in the component . Press , the zero display
appears. [] is displayed on the right border of the display.
3. Weigh-in the component , press . Net-total (sum
weight of the components and ) is displayed.
4. Press again, the zero display appears.
5. Weigh-in the component , press . Net-total (sum
weight of the components and and ) is displayed.
If necessary, also fill the formula up to the desired final
value. For every component more repeat the steps 4-5.
Back to weighing mode by pressing the button.

FCF-BA-e-1611 17
Percent
determination
Percentage calculation facilitates weight display in percent
related to a reference weight equivalent to 100 %.
In weighing mode press repeatedly, until “100 %“ is
displayed flashing.
Put a reference weight which corresponds to 100 %.
Save reference by . Remove reference weight.
Place goods to be weighed on balance.
The weight of the sample is displayed in percentage in
terms of the reference weight.
Back to weighing mode by pressing the button.

18 FCF-BA-e-1611
8 Menu
8.1 Navigation in the menu
Access to menu
Keep pressed in weighing mode
until “Unit” is displayed.
Select menu items
With help of , the individual menu
items can be selected one after the
other.
(example)
Change settings
Confirm selected menu item by ,
the current setting will be shown.
Press to change the setting.
Every time is pressed, the next
setting will be displayed, see chap.8.2
„Menu overview“.
(example)
1. Save change of a menu item and
exit the menu
Press and the balance will
return to weighing mode.
0.0
g
Vn�
T
Vn�
T
0.0
g

FCF-BA-e-1611 19
2. Change settings of several menu
items
Confirm selected menu item by ,
the current setting will be shown.
Press to change setting
Press „Exit“ will be displayed.
Either
Confirm by (yes), „StorE“ will be
displayed. Save ( ) or discard (
) and exit the menu,
or
Press (No) and make the
changes on the other menu items as
described above
(example)
E�T
m
i
j
STQRE

20 FCF-BA-e-1611
Save/reject and exit the menu
Either
Save the changes carried out by
(yes). The balance returns automatically
into weighing mode.
or
To discard the changes, press
(No). The balance returns automatically
into weighing mode.
Save
Reject
E�T
m
i
j
STQRE
0.0
g
0.0
g