KERN FXN Series 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 manual
Compact balance
KERN FXN
Version 1.0
11/2014
GB
FXN-N-BA-e-1410

GB
KERN FXN-N
Version 1.0 11/2014
Operating manual
Compact balance
Contents
1Technical data ............................................................................................ 3
1.1 Dimensions............................................................................................................................. 4
2Appliance overview.................................................................................... 5
2.1 Overview of display................................................................................................................ 5
2.1.1 Not verifiable models.............................................................................................................. 5
2.2 Keyboard overview................................................................................................................. 6
3Basic Information (General)...................................................................... 7
3.1 Proper use.............................................................................................................................. 7
3.2 Improper Use ......................................................................................................................... 7
3.3 Warranty................................................................................................................................. 7
3.4 Monitoring of Test Resources................................................................................................ 7
4Basic Safety Precautions .......................................................................... 8
4.1 Pay attention to the instructions in the Operation Manual..................................................... 8
4.2 Personnel training .................................................................................................................. 8
5Transport and storage............................................................................... 8
5.1 Testing upon acceptance....................................................................................................... 8
5.2 Packaging / return transport................................................................................................... 8
6Unpacking, Setup and Commissioning.................................................... 9
6.1 Installation Site, Location of Use............................................................................................ 9
6.2 Unpacking and placing......................................................................................................... 10
6.2.1 Scope of delivery.................................................................................................................. 11
6.3 Battery operation.................................................................................................................. 11
6.4 Initial Commissioning ........................................................................................................... 13
7Adjustment ............................................................................................... 13
7.1 Adjusting............................................................................................................................... 13
7.1.1 Adjustment ........................................................................................................................... 14
8Operation .................................................................................................. 15
8.1 Weighing .............................................................................................................................. 15
8.2 Taring................................................................................................................................... 15
8.3 Background illumination....................................................................................................... 16
9The menu .................................................................................................. 17
9.1 Navigation in the menu ........................................................................................................ 17
9.2 Menu overview..................................................................................................................... 18
9.3 Set auto-OFF function.......................................................................................................... 19
10 Error messages........................................................................................ 20
11 Instant help............................................................................................... 21
12 Servicing, maintenance, disposal........................................................... 22
12.1 Cleaning............................................................................................................................... 22
12.2 Servicing, maintenance........................................................................................................ 22
12.3 Disposal................................................................................................................................ 22
2 FXN-N-BA-e-1410

1 Technical data
KERN FXN
3K -3 FXN 6K -3 FXN 10K -3 FXN 30K -2
Weighing range (max) 3 kg 6 kg 15 kg 30 kg
Readability (d) 1 g 2 g 5 g 10 g
Reproducibility 1 g 2 g 5 g 10 g
Linearity 2 g 4 g 10 g 20 g
Recommended adjustment
weight, not added (class) 3 kg
(M3) 6 kg (M3) 15 kg (M3) 30 kg (M3)
Stabilization time (typical) 2 sec.
Units g, kg, lb, oz,
Warm-up time 10 min.
Electric Supply Battery operation: 6 x 1.5V Size D
Auto-Off (rechargeable
battery) 15 min., 5 min., 3 min., off
Display type LCD, digit height 25 mm
Operating temperature 0° C …. + 40° C
Humidity of air 25 % - 95 % (non-condensing)
Dimensions of weighing
plate
(Stainless steel) (mm) 236 x 195
Casing dimensions 240 x 280 x 120
Dimensions, completely
assembled (mm) 240 x 280 x 120
Weight kg (net) 4.0
IP protection IP68 to DIN 60529
FXN-N-BA-e-1410 3

1.1 Dimensions
4 FXN-N-BA-e-1410

2 Appliance overview
2.1 Overview of display
2.1.1 Not verifiable models
Display Designation Description
Zeroing display Should the balance not display exactly zero
despite empty scale pan, press the
button. The balance will be set to zero after a
short standby time.
Stability display Scales are in a steady state
Net weight display Net weight will be displayed
Capacity display
Battery Full battery capacity
Display Weighing unit kg Displayed weight in kg
FXN-N-BA-e-1410 5

2.2 Keyboard overview
Button Designation Function
ON-button, zero
button Switch-on, set to zero
OFF-button Switching Off
TARE button Tare balance
Unit button Switch-over units
Switch-over button
Switch-over gross
weight / net weight
6 FXN-N-BA-e-1410

3 Basic Information (General)
3.1 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 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.
3.2 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.
3.3 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 or damage by media, liquids, natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
3.4 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.
FXN-N-BA-e-1410 7

4 Basic Safety Precautions
4.1 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.
All language versions contain a non-binding translation.
The original German is binding.
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 Transport and storage
5.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the
appliance itself when unpacking for possible visible damage.
5.2 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.
8 FXN-N-BA-e-1410

6 Unpacking, Setup and Commissioning
6.1 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 scales on a stable, even 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 appliance for ca. 2 hours at room
temperature.
Avoid static charge of goods to be weighed or weighing container.
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.
FXN-N-BA-e-1410 9

6.2 Unpacking and placing
Carefully remove the balance from the packaging, remove plastic cover and setup
balance at the intended workstation.
Level balance with foot screws until the air bubble of
the water balance is in the prescribed circle.
Membrane for protection type IP68
Battery compartment
Access to
membrane
Pressure compensation
10 FXN-N-BA-e-1410