FFN-N Operating Instructions Ver 2.5 Jan 2018

GB

KERN FFN-N Version 2.5 2018-01

Operating instructions Compact balance Table of Contents 1

Technical Data ... 4

1.1

Dimensions ... 6

2

Appliance Overview ... 7

2.1 2.1.1 2.1.2 2.2

Overview of displays ... 7 Not verifiable models ... 7 Verifiable models ... 7 Keyboard Overview ... 9

3

Basic Information ... 10

3.1 3.2 3.3 3.4

Proper use ... 10 Improper use... 10 Warranty ... 10 Monitoring of Test Resources... 10

4

Basic Safety Precautions ... 11

4.1 4.2

Pay attention to the instructions oft the Operation Manual ... 11 Personnel training ... 11

5

Transportation & Storage... 11

5.1 5.2

Testing upon acceptance ... 11 Packaging / return transport ... 11

6

Unpacking, Setup and Commissioning ... 12

6.1 6.2 6.2.1 6.3 6.3.1 6.4 6.5

Installation Site, Location of Use ... 12 Unpacking and implantation ... 13 Scope of supply ... 15 Battery power supply ... 15 Mains connection during rechargeable battery operation ... 17 Initial Commissioning ... 18 Protection type IP65 ... 18

7

Adjustment ... 18

7.1 7.1.1 7.1.2 7.2 7.2.1

Adjustment ... 18 Adjusting non-verifiable models... 19 Adjusting verifiable models ... 20 Verification ... 21 Adjustment switch and seals ... 22

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8

Operation ... 23

8.1 8.2 8.3 8.4

Weighing ... 23 Taring... 23 Weighing units switch-over ... 24 Background illumination ... 24

9

The menu ... 25

9.1 9.2 9.3 9.4

Navigation in the menu ... 25 Menu overview... 26 Set auto-OFF function ... 27 Setting the Multi-Tare function... 28

10

Error messages... 29

11

Instant Help ... 30

12

Service, maintenance, disposal... 31

12.1 12.2 12.3

Cleaning... 31 Service, maintenance ... 31 Disposal ... 31

13

Declaration of –Conformity ... 31

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1 Technical Data KERN

FFN 1K-4N

FFN 3K0.5IPN

FFN 6K1IPN

FFN 15K2IPN

FFN 25K5IPN

Weighing range (max)

1,5 kg

3 kg

6 kg

15 kg

25 kg

Readability (d)

0,2 g

0,5 g

1g

2g

5g

Reproducibility

0,2 g

0,5 g

1g

2g

5g

Linearity

0,4 g

1g

1g

4g

10 g

Recommended adjustment weight, not added (class)

1,5 kg (M3)

3 kg (M3)

6 kg (M3)

15 kg (M3)

25 kg (M3)

Stabilization time (typical)

2 sec.

Units

kg, lb

Warm-up time

30 min.

Electric Supply

Supply voltage: 110V-230V AC Mains adapter: 12 V, 500 mA

Battery power supply

Auto-off (Rechargeable battery) Display mode Operating temperature Humidity of air Weighing plate dimensions (stainless steel) (mm)

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

Casing dimensions

230 x 300 x 130

Total dimensions mounted (mm)

230 x 300 x 130

Weight kg (net)

3,2

IP protection

IP65 (Only during operation on battery power)

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KERN

FFN 1K-4NM

FFN 3K1IPM

FFN 6K2IPM

FFN 15K5IPM

FFN 25K10IPM

Weighing range (max)

1,5 kg

3 kg

6 kg

15 kg

25 kg

Readability (d)

0,5 g

1g

2g

5g

10 g

Minimum weight

10 g

20 g

40 g

100 g

200 g

Verification values (e)

1g

1g

2g

5g

10 g

Accuracy class

III

III

III

III

III

Reproducibility

1g

1g

2g

5g

10 g

Linearity

1g

1g

2g

5g

10 g

Recommended adjustment weight, not added (class)

1,5 kg (M1)

3 kg (M3)

6 kg (M3)

15 kg (M3)

25 kg (M3)

Stabilization time (typical)

2 sec.

Units

kg, g

Anwärmzeit

10 min.

Electric Supply Battery power supply

Auto-off (Rechargeable battery) Display mode Operating temperature Humidity of air Weighing plate dimensions (stainless steel) (mm)

Supply voltage: 110V-230V AC Mains adapter: 12 V, 500 mA 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 -10° C …. + 40° C 25 % - 95 % (non-condensing) 230 x 190

Casing dimensions

230 x 300 x 130

Total dimensions mounted (mm)

230 x 300 x 130

Weight kg (net)

3,2

IP protection

IP65 (Only during operation on battery power)

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1.1

Dimensions

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2 Appliance Overview 2.1

Overview of displays

2.1.1 Not verifiable models

2.1.2 Verifiable models

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Display

Designation

Description

Zeroing display

Should the balance not display exactly zero despite empty scale pan, press the Zero key. Will be reset to zero after short waiting time.

Stability display

Scales are in a steady state

Net weight display

Net weight will be displayed

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

Display weighing unit g

Displayed weight in g

(only in not verifiable units)

(only in verifiable units)

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2.2

Keyboard Overview Button

Designation

Function

ON/OFF key

Turn on/off

TARE key

Tare balance

Zero 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

+

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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.

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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. Versions in other languages are non-binding translations. The only binding version is the original document in German.

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  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 glass wind screen, weighing platform, power unit etc. against shifting and damage.

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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.

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6.2

Unpacking and implantation

Carefully remove the balance from the packaging, remove plastic cover and setup balance at the intended workstation.

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 of battery compartment cover

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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.

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Membrane for degree of protection IP65

6.2.1 Scope of supply Serial accessories:  Balance  Weighing plate  Carrier weighing plate  Fastening screw of the carrier weighing plate  Operating instructions  Rechargeable battery  Hexagonal socket wrench 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:  Remove any adherent moisture from the balance  Move both levers 90° to the left

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FFN-N-BA-e-1825

 Remove the rechargeable battery cover

 Connecting the rechargeable battery Watch the colours: Red on red ! Black on black!

 Insert the rechargeable battery in a manner that it cannot slip (fasten with a rubber mat)

Ensure that the cables are not squeezed.

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 Close the rechargeable battery cover  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 IP65 is ensured.

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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 IP65 Designed for temporary contact with liquids. Use a damp cloth for cleaning. Dustproof. IP65 protection is only ensured during operation on battery power

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.

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7.1.1 Adjusting non-verifiable models Display

Operation

F1 CAL

 Start balance by pressing ON/OFF key

UnLQD

 Press ZERO key, in the display appears „UnLod“.

 Whilst the weighing scale is carrying out a self-test, (00…- 99…) press TARE key and hold until the message “F1 CAL“ appears.

 Press ZERO key again the weight value will be displayed. (Example)

 Enter value for adjustment weight (See chpt 1) by TARE key  Position weight

0.0

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 Press ZERO key Remove weight whilst scale is carrying out self-test Weighing scale changes to zero display. This completes the adjustment process.

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7.1.2 Adjusting verifiable models The adjustment is locked for verified balances. with adjustment switch To disable the access lock, destroy the seal and actuate the adjustment switch. Position of the adjustment switch see chapter 7.2.1 Attention: After destruction of the seal the balance must be re-verified by an authorised agency and a new verification wire/seal mark fitted before it can be reused for applications subject to verification.

Display

Operation

F1 CAL

 Start balance by pressing ON/OFF key  While the balance carries out a self test (00…- 99…), press TARE key and keep pressed until „F1 CAL“ appears on the display.  Actuate the adjustment switch on the lower side of the balance

UnLQD

 Press ZERO key in the display appears „UnLod“.

 Press ZERO key anew The weighing value is displayed. (Beispiel)

 Press TARE key to enter the value of the adjustment weight (see chapter 1)  Place the adjustment weight  Press ZERO key While the balance carries out a self-test, take away the adjustment weight

0.0

FFN-N-BA-e-1825

The balance changes over to zero display. Now the process of adjustment is completed.

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