KERN ADJ Series User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [email protected]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Servicemanual
Analytical balance
KERN ADJ
Version 1.0
09/2019
GB
ADJ-SA-e-1910
Importør:
Impex Produkter AS
Gamle Drammensvei 107
1363 Høvik
www.impex.no
[email protected]
Tel.: [phone]

2 ADJ-SH-e-1910
GB
KERN ADJ
Version 1.0 07/2019
Servicemanual
Contents
1Basic Information........................................................................................4
2Introdution...................................................................................................4
3Device overview ..........................................................................................5
3.1 Components......................................................................................................................5
3.2 Keyboard overview...........................................................................................................6
3.3 Overview of display..........................................................................................................8
4Basic Information (General).......................................................................9
4.1 Intended use......................................................................................................................9
4.2 Improper Use.....................................................................................................................9
4.3 Warranty ............................................................................................................................9
4.4 Monitoring of Test Resources.......................................................................................10
5Basic Safety Precautions .........................................................................10
5.1 Pay attention to the instructions in the Operation Manual ........................................10
5.2 Personnel training ..........................................................................................................10
6Transport and storage..............................................................................10
6.1 Testing upon acceptance...............................................................................................10
6.2 Packaging / return transport..........................................................................................10
7Unpacking, Setup and Commissioning...................................................12
7.1 Installation Site, Location of Use ..................................................................................12
7.2 Unpacking, checking and installation ..........................................................................13
7.3 Levelling ..........................................................................................................................14
7.4 Electric power supply.....................................................................................................14
7.4.1 Initial Commissioning............................................................................................15
7.5 Connection of peripheral devices.................................................................................15
8Menu...........................................................................................................16
8.1 Navigation in the menu ..................................................................................................16
8.2 Menu overview ................................................................................................................18
9Adjustment ................................................................................................20
9.1 ADJ Models .....................................................................................................................20
9.1.1 Automatic adjustment using a built-in weight .....................................................20
9.2 Procedure:.......................................................................................................................21
9.3 Manual initiation of internal adjustment.......................................................................22
10 Linearity calibration...............................................................................23
10.1 Check count value..........................................................................................................23

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10.2 Procedure linear calibration ..........................................................................................25
10.3 External weight calibration............................................................................................28
10.3.1 Factory External Weight Calibration.....................................................................28
Before calibration, please make sure you have preheated the balance for 30 minutes and
adjusted the level. ................................................................................................................28
10.3.2 User ExternalWeightCalibration(user modeC3------0)...........................................30
11 Adjust theCornerError...........................................................................31
11.1 Corner Error Inspection .................................................................................................31
12 Adjustment of zero count and full capability count value..................36
12.1 Adjustment of zero count value：.................................................................................36
12.2 Adjustment of Full capability count value：................................................................36
13 Adjust Internal calibration weight value ..............................................36
14 Restoresystemsetting ...........................................................................37
15 Servicing and Maintenance...................................................................40

4 ADJ-SH-e-1910
1 Basic Information
The device must be repaired only by trained specialist staff or personnel with professional
formation (such as a repair-specialist accredited by law concerning verification). The service
manual is obligatory for repair work. After repair, original conditions of the device have to be
restored. Only original spare parts should be used.
Instructions about conformity-evaluated scales:
Repair must be carried only at 100% compliance with the type approval. A violation of this
specification will result in a loss of the type approval! After successful repair the balance will
have to be reverified before it can be used again in a statutorily regulated field.
Detailed instructions about conformity-evaluated scales:
Repair must be carried only at 100% compliance with the type approval. A violation of this
specification will result in a loss of the type approval!
After successful repair the balance will have to be reverified before it can be used again in a
statutorily regulated field.
2 Introdution
This service manual covers the ADJ series and is edited for the authorized servicing personnel.
Note all rights are reserved. Copying any part of this manual is prohibited without our
permission.
.

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3 Device overview
3.1 Components

6 ADJ-SH-e-1910
3.2 Keyboard overview
Key
Designation
Function
ON/OFFkey
Turn on/off
Exit menu
CALkey
Adjustment
TAREkey
Taring
Zeroing
Save setting
Pos.
Designation
1
Glass windshield
2
Interface RS 232
3
Weighing pan
4
Bubble level
5
Display
6
Keyboard
7
Foot screws
8
Handle for operation of the side windshield doors
9
Mains adapter connection

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MODEkey
Switch-over weighing unit
Selecting an application
MENUkey
How to save the reference
Switch on/off background illumination of display
(keep the button pressed for a long time)
PRINTkey
Change setting in the menu
Print out the displayed value

8 ADJ-SH-e-1910
3.3 Overview of display
Display
Description
Stabilitydisplay
The balance is in stand-by mode
g
Weighing unit “Gram”
ct
Weighing unit „Carat“
lb
Weighing unit „Pound“
oz
Weighing unit „Ounce“
Pcs
Application parts counting
%
Application percentage determination

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4 Basic Information (General)
4.1 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.
4.2 Improper Use
Do not use balance for dynamic add-on weighing procedures, if small amounts of goods
to be weighed are removed or added. The “stability compensation“ installed in the
balance may result in displaying an incorrect measuring value!(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 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.
4.3 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

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4.4 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 substancesand 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.
5 Basic Safety Precautions
5.1 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.
5.2 Personnel training
The appliance may only be operated and maintained by trained personnel.
6 Transport and storage
6.1 Testing upon acceptance
When receiving the appliance, please check packaging immediately, and the appliance
itself when unpacking for possible visible damage.
6.2 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.
Pack weighing plate + accessories and power supply unit
separately.
Secure glass windshield against slipping (e.g. using an adhesive
strip).