KERN FFN N Compact balance Operating instructions
Below you will find brief information for Compact balance FFN-N. This document describes how to use, maintain, and troubleshoot your new balance. It includes information on unpacking, setting up, adjusting, and weighing with the balance, as well as instructions on how to use the menu and understand error messages.
advertisement
KERN & Sohn GmbH
Ziegelei 1 Phone: +49-[0]7433- 9933-0
D-72336 Balingen email: [email protected]
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Operating instructions
Compact balance
KERN FFN-N
Version 2.0
05/2011
GB
FFN-N-BA-e-1120
GB
KERN FFN-N
Version 2.0 05/2011
Operating instructions
Compact balance
Table of Contents
6 Unpacking, Setup and Commissioning ..................................................... 10
FFN-N-BA-e-1120 2
1 Technical Data
KERN
Weighing range (max)
Readability (d)
Reproducibility
Linearity
Recommended adjustment weight, not added (class)
Stabilization time (typical)
FFN
3K0.5IPN
3 kg
0,5 g
0,5 g
1 g
3 kg
(M3)
FFN
6K1IPN
6 kg
1 g
1 g
1 g
6 kg
(M3)
2 sec.
FFN
15K2IPN
15 kg
2 g
2 g
4 g
15 kg
(M3)
FFN
25K5IPN
25 kg
5 g
5 g
10 g
25 kg
(M3)
Warm-up time
Electric Supply
Battery power supply
Auto-off (Rechargeable battery)
Display mode
Operating temperature
Humidity of air
Weighing plate dimensions
(stainless steel) (mm)
Casing dimensions
Total dimensions mounted
(mm)
Weight kg (net)
IP protection
30 min.
Supply voltage: 110V-230V AC
Mains adapter: 12 V, 0,8 A
Operating period: Background lighting on: 30 h
Background lighting off: 50 h
Loading time: 12 h
15 min., 5 min., 3 min., off
LCD, digit size 25 mm
0° C …. + 40° C
25 % - 95 % (non-condensing)
230 x 190
230 x 300 x 130
230 x 300 x 130
3,2
IP67
FFN-N-BA-e-1120 4
1.1 Dimensions
2 Appliance Overview
2.1 Overview of displays
Display
Designation
Zeroing display
Description
Should the balance not display exactly zero
Stability display despite empty scale pan, press the button.
Will be reset to zero after short waiting time.
Scales are in a steady state
Net weight will be displayed Net weight display
Capacity display
Rechargeable battery
Rechargeable battery almost empty, please connect power pack
Power supply connected Icon is glowing for power supply via power pack
Display weighing unit kg Displayed weight in kg
Display weighing unit lb Displayed weight in lb
FFN-N-BA-e-1120 6
2.2 Keyboard Overview
Button Designation Function
TARE button Tare balance
Zero setting key Balance set at zero
+
TARE + ZERO-key
Change units
in the menu
Call up menu
Change to the next menu item /parameter
Select menu item / parameter
3 Basic Information
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 plate. 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“ in the balance. (Example: Slowly draining fluids from a container on the balance.)
Do not leave permanent load on the weighing plate. 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 damaged 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.
FFN-N-BA-e-1120 8
4 Basic Safety Precautions
4.1 Pay attention to the instructions oft the Operation Manual
Carefully read this operation manual before setup and commissioning, even if you are already familiar with KERN balances.
4.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
5 Transportation & 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
Ö Keep all parts of the original packaging for a possibly required return.
Ö Only use original packaging for returning.
Ö Prior to dispatch disconnect all cables and remove loose/mobile parts.
Ö Reattach possibly supplied transport securing devices.
Ö Secure all parts such as glass wind screen, weighing platform, power unit etc. against shifting and damage.
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, vapors 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 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.
FFN-N-BA-e-1120 10
6.2 Unpacking and implantation
Carefully remove the balance from the packaging, remove plastic cover and setup balance at the intended workstation.
1
3
2
7
5
4
8
6
1 Weighing plate
2 Locking screw
3 Carrier weighing plate
4 Display
5 Bubble level
6 Keyboard
7 Footscrews
8 Rechargeable battery compartment cover
9 Screws for battery compartment cover
9
Level balance with foot screws until the air bubble of the water balance is in the prescribed circle.
Pressure compensation screw
Mains connection
Battery compartment
Pressure compensation screw:
[1]
On the lower side of the balance there is a pressure compensation screw [1] which has to be opened for the weighing process. Fasten the screw before cleaning the balance.
FFN-N-BA-e-1120 12
Membrane for degree of protection IP67
6.2.1 Scope of supply
Serial accessories:
Balance
6.3 Battery power supply
The rechargeable battery is charged via the delivered power supply.
The operating time of the rechargeable battery with background illumination is 30h, without that it is 50 hrs. Charging time until complete recharging 12h.
In the menu you can activate the AUTO-OFF function
[time off], see chap. 9.3.
According to menu settings, the balance switches automatically off in order to spare the battery.
Insert rechargeable battery:
Ö Remove any adherent moisture from the balance
Ö Move both levers 90° to the left
Ö Remove the rechargeable battery cover
Ö Connecting the rechargeable battery
Watch the colours:
Red on red !
Black on black!
Ö Insert the rechargeable battery in a manner that it cannot slip (fasten with a rubber mat)
Ensure that the cables are not
squeezed.
FFN-N-BA-e-1120 14
Ö Close the rechargeable battery cover
Ö Move both levers 90° to the right
If in the display the triangle appears above the capacity display , the rechargeable battery is nearly exhausted. Connect power pack, the rechargeable battery is loaded.
Avoid excess pressure on the balance in order to avoid damaging them, particularly as they are supported by the weighing plate.
6.3.1 Mains connection during rechargeable battery operation
During the rechargeable battery operation ensure that the mains connection is covered with a rubber cap.
Only by this the type of protection IP67 is ensured.
6.4 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).
The weighing scale must be connected to the power supply (batteries) during this warm-up time.
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
6.5 Protection type IP-67
Dust and spray water protection:
The KERN FFN is in compliance with the requirements set for protection type IP67.
Suitable for short-term use in wet areas Dustproof.
7 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.
7.1 Adjustment
Carry out adjustment as near as possible to the maximum load of the scale (See chpt. 1 “Techn. data”). The accuracy of the weight used for adjustment has to correspond approximately to readability d of the scale, or rather closer than that.
Info about test weights can be found on the Internet at: http://www.kern-sohn.com
Procedure when adjusting:
Observe stable environmental conditions. A warming up time (see chapter 1) is required for stabilization.
FFN-N-BA-e-1120 16
Display Operation
CAL
Ö Start balance by pressing
Ö Whilst the weighing scale is carrying out a self-test,
(00…- 99…) press
CAL“ appears.
and hold until the message “F1
UnLQD
Ö Press
, in the display appears „UnLod“.
(Example)
Ö Press
again the weight value will be displayed.
Ö Enter value for adjustment weight (See chpt 1) by
Ö Position weight
Ö Press
Remove weight whilst scale is carrying out self-test
Weighing scale changes to zero display.
This completes the adjustment process.
0.0
8 Operation
8.1 Weighing
U1.04
Ø
0.0
Ö Start balance by pressing
Program version is displayed.
Afterwards the balance will carry out a self-test.
The balance will be ready for operation as soon as weight reading “0.0” and the triangular icon above the stability display appear.
The time.
key can be used to set the balance to zero at any
Ö Turn off scale by pressing
.
The “0.0” display disappears and the weighing scale is now switched off.
8.2 Taring
The tare weight of any preloads can be deducted by pressing a button so that the actual weight of the baby is displayed in subsequent weighings.
200.0
Ø
Ö Put on weighing receptacles and press
.
The zero display appears as well as the triangle above the zero setting icon as well as the stability icon and the net weight icon .
The weight of the container is now internally saved.
0.0
1000.0
Ö Place goods to be weighed in the weighing container.
The net weight of the goods to be weighed is displayed.
-200.0
The weight of the weighing container will be displayed as a minus number after removing the weighing container (= gross weight).
FFN-N-BA-e-1120 18
0.0
The tare weight is saved until it is deleted. Remove the load from the balance and press . The zero display appears and the triangle above the net weight icon disappears.
-
1200.0
Gross weight:
Ö Press
as long as the weighing tray and the load are present on the weighing platform.
Ö Remove weighing goods and receptacle
Gross weight will be shown as a negative value.
8.3 Weighing units switch-over
Ö Press
and at the same time.
The weighing scale switches between the kg and lb units.
9 The menu
9.1 Navigation in the menu
Ø
Ö Start balance by pressing
Ö While the balance carries out a self test, press keep pressed until „F1 CAL“ appears
and
Ö Use
to change to the next menu item
Ö Select menu item using
Ö Use
to change between the individual parameters
Ö Select the desired parameter using
FFN-N-BA-e-1120 20
9.2 Menü-Übersicht
Menu item Function
Calibration not documented not documented not documented
Auto-OFF function, adjustable between off, 3, 5 and 15 minutes not documented
Return to weighing mode by
9.3 Set auto-OFF function
Ø
Ö Start balance by pressing
Ö While the balance carries out a self test, press keep pressed until „F1 CAL“ appears
Ø
Ø
Ø
Ø
Ø
and
Ö Press
repeatedly until „F5 oFF“ appears
Ö Select function using
Ö Use
to change between the individual parameters
Ö Select the desired parameter using
“F5 oFF“ appears, now the function is enabled
Ö Press
repeatedly until “bACK“ appears
Ö Press
The balance carries out a restart and changes to weighing mode
FFN-N-BA-e-1120 22
10 Error messages
Display Description
Zero range exceeded
ERR4
Electronic error
ERR6
11 Instant Help
In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning.
The displayed weight does not glow.
The balance is not switched on.
Batteries are inserted incorrectly or empty
No batteries inserted.
The displayed weight is permanently changing
Weighing plate has contact with other objects.
Electromagnetic fields / static charging
(choose different location/switch off interfering device if possible)
The weighing value is obviously
The display of the balance is not at zero
Adjustment is no longer correct. wrong
The balance is on an uneven surface.
Electromagnetic fields / static charging
(choose different location/switch off interfering device if possible)
Should other error messages occur, switch balance off and then on again. If the error message remains inform manufacturer.
FFN-N-BA-e-1120 24
12 Service, maintenance, disposal
12.1 Cleaning
Remove batteries from instrument before cleaning.
Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened with mild soap suds. Ensure that no liquid penetrates into the device and wipe with a dry soft cloth.
Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner.
Spilled weighing goods must be removed immediately.
12.2 Service, maintenance
The appliance may only be opened by trained service technicians who are authorized by KERN.
Before opening, disconnect from power supply.
12.3 Disposal
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.
advertisement
Key Features
- IP67 protection
- Rechargeable battery
- Auto-off function
- Tare function
- kg/lb weighing units
- LCD display
- Menu navigation
- Error messages