KERN DAB-SH-e-1610 User manual

KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
Service manual
Electronic Moisture Analyser
KERN DAB
Version 1.0
06/2016
GB
DAB-SH-e-1610

DAB-SH-e-1610 - 2 -
GB
KERN DAB
Version 1.0 05/2016
Servicemanual
Content
1Basic Information .......................................................................................- 3 -
2Introduction.................................................................................................- 3 -
3Instruction...................................................................................................- 4 -
3.1 Security...................................................................................................................................- 4 -
4Assembly drawing......................................................................................- 5 -
4.1 Adjustment.............................................................................................................................- 6 -
4.2 Error massages....................................................................................................................- 10 -
4.2.1 Sensor fix: .................................................................................................................. - 12 -
4.3 Halogen Error......................................................................................................................- 13 -
4.3.1 Temperature calibration set...................................................................................... - 14 -
4.4 Interface And Fan ................................................................................................................- 15 -
4.4.1 RS232 INTERFACE. ..................................................................................................... - 15 -
4.4.2 FAN ............................................................................................................................ - 16 -
4.5 POWER .................................................................................................................................- 16 -
4.6 LCD .......................................................................................................................................- 16 -
5How To Replace The Halogen Lamp.......................................................- 17 -
6Spare part list............................................................................................- 18 -

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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 Introduction
This service manual covers the DAB 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.

DAB-SH-e-1610 - 4 -
3 Instruction
3.1 Security
Please reading the following before you use the Moisture analyzer
•The instrument can use for test the moisture of the sample,each
improper operation may result in personal injury and equipment
damage
•Please access the AC power accordance with the manual;
•Please make sure the power cord does not interfere with people
action;
•Do not use the instrument under the hazardous,wet or unstable
environment;
•Unplug the power before you clean the analyzer;
•Please keep enough space around the instrument,and keep the
top of the space at least 1m;
•During a special experiment, please wear protective equipment by
yourself.
•Please do not change the instrument's components and any other
aspects. Maintenance of this equipment by the factory authorized
professionals.
•
Moisture analyzer use Halogen lamp.
•Do not put the flammable materials around the instrument;
•Do not touch the halogen lamp when it on working.
Special attention to the dangers of some sample;
•Before you test the moisture of dangerous good,please take Full
investigation
•Inflammable and explosive materials:Heating the inflammable and
explosive materials will produce flammable gases or vapors, so
need to lower the temperature in a dry environment. In case of fire
or explosion.
•Toxic and corrosive substance: Keep the samples of toxic or
corrosive ingredients in well-ventilated environment.
Above the sample test will be particularly careful, for any damage caused by your own risk

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4 Assembly drawing
Please installation the instrument according the picture
Installation order from top to bottom:1 --2--3--4--5
1. Aluminum scale pan
2. The triangle scale frame,keep in the center with sensor fix.
3.Scale pan brackets
4. Wind cover
5. Stainless steel plate

DAB-SH-e-1610 - 6 -
4.1 Adjustment
No
Problem
Solution
1 The weighing
not accurate One point weight adjustment
Press and keep pressed until „CAL“ is displayed.
1) Wait until the weighed value for the required adjustment
weight appears flashing.
Put the required adjustment weight carefully into the centre of
the sample dish and close heating hood.Adjustment is carried
out automatically.

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2) After successful adjustment the balance automatically
returns to weighing mode, „100,000 g“ will be displayed.Take
away adjustment weight.
3) Wait until „0.000 g“ appears.
The
balancecan not
weighing, and
the liner error
more than
±10d.
Three point weight adjustment
Press” ” when the light turn on, release and press
Max load (100g) is flashing
put on the calibration weight (100g F2 is recommended)

DAB-SH-e-1610 - 8 -
when the display shows
Remove the calibration weight.
The display will show
After a few second it will display
Put on the next calibration weight (50 g F2 recommended)
After a few second it will display
Remove the calibration weight.
The display will show

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After a few second the display will show
Put on the next calibration weight (20g F2 recommended)
After a few second it will display
Remove the calibration weight
Return to the normal operating mode

DAB-SH-e-1610 - 10 -
4.2 Error massages
Err-1: The sample weight less than 1g,Please put on more than 1g sample, then test.
Err-2: The temperature setting less than 40℃，please reset.
Err-3：The testing time less than 30 seconds
Err-4: The power for halogen lamp problem.
Err-5: The time setting for Soft testing mode less than 3 minutes
Err-6:The temperature sensor broken.

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2.The sensor parts touch other place.(see the4.2.1)
3.The weighing sensor broken: must change the load cell
sensor.there are five line connect with main-board, the connect
order is:
3
The big error
for repeatability
Please try to adjust the four corner error, adjust the sensor
level place.
4
When test
finish,not go
zero
The sensor not warm up, and also can put 100g weight on the
pan for one day (Aging experiment)

DAB-SH-e-1610 - 12 -
4.2.1 Sensor fix:
1. Heat insulating layer: keep level, if up will touch the case, if down will touch the
sensor, the result is make the balance not stable.
2. The connecting pole must in the center of the hole in upper shell
3. The spring also need in the middle.

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4.3 Halogen Error
No Problem Solution
1
Not heating
The temperature set too lower, please reset the
temperature
The mode soft with lower temperature,will light soft,it
looks not heating
The lamp broken,it will show the white fog inside.
The Filament broken. Please check the lamp first
Lamp life is reached, there will show black smoke inside.
2 Temperatureis not
reached
The input voltage is to low (220 V / 110V)
The temperature sensor is broken.
3 Not stop heating
The temperature control IC in main-board broken.
The lamp continue heating and not stop,it will broken the
machine, it means temperature control broken, need
change.
4 Temp Sensor
After a long use the sensor will be dirty. You have to
clean it from time to time.
5 Tempcalibration
Must use our calibration meter and put on the pan
center,useSoft mode with manual stop, and check the
temperature.
See 4.3.1

DAB-SH-e-1610 - 14 -
6 Halogen lamp
beyond control
1.The transistor is broken.
2.The chip broken (temperature control system)
7 Not working when
press Start
The switch broken,so can not send the close signal.
4.3.1 Temperature calibration set
TEMP METER
Calibration procedure you will find in the manual DAB-BA-e-1610

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4.4 Interface And Fan
4.4.1 RS232 INTERFACE.
Parameter setting and input you will find in the manual DAB-BA-e-1610
1 Can not connect
computer
Choose continue mode, check the software baud rate
and the com interface.
The RS232 interface is broken.
2 Can not print
Choose the truebaud rate
The RS232 broken
The printer has a problem
3
Print the error font
The baud rate is wrong

DAB-SH-e-1610 - 16 -
4.4.2 FAN
1 Fan is not spinning
Not heating, so not start the fan.
The power line loose. Need open the case and connect
again.
2 Fan makes noise
The fan miss place,need open and adjust
Something inside like dust and cotton.
The fan use so long time will big noise, but it not effect
test result.
4.5 POWER
1.The power for halogen lamp: 220V/450W(110V/450W) and direct connect with AC power
supply.So the power supply effect affect the results, we suggest if you want get the more
precise and stable results, please choose the regulated power supply (more then 1KW)
Please choose the matching power supply 220V 50HZ or 110V 60HZ
The wrong voltage will broken themoisture analyzer
The wrong Hz will effect the test result.
4.6 LCD
No Problem Solution
1 No light
Check the power supply
Standby state
The line loose.
The display broken.
2
Back light
shining The power supply not stable.
3 Back light
close 1.Press “ ” key to switch on the back light
2.Back light broken.
4 Just back light,but no
font show
Please restart the moisture analyzer
The main chip in main-board was broken
The LCD is broken.

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5 How To Replace The Halogen Lamp
1).Remove the stainless steel plate, unscrew four screws.
2).Please note the connection position, 1 connect the mainboard, 3 connect the AC power
supplier,2 connect with the temperature sensor. And please give some mark when you move
the joint. If make mistake will broken the mainboard.So this step is most important.
3).Unscrew the 8 screws on the baffle
4).Unscrew the 2 screws, so we can remove the lamp.

DAB-SH-e-1610 - 18 -
5)Then we can replace the lamp,and fix it.The line on the lamp is blue color,
The short one connect with temperature control,length one connect with heating joint.
The assembly process note the connection position please,and be careful the halogen lamp
it is fragile. And avoid touching the lamp with bare hands. Fingerprints will reduce the light
intensity.
6 Spare part list
Article
number
Product name
RDAB-1001
Load cell
RDAB-2001
Platine, Front
RDAB-2002
Heater PCB
RDAB-2003
Main PCB
RDAB-3001
LCD Display
RDAB-4001
Display overlay
RDAB-5001
Temperature sensor
RDAB-5002
Temperature sensor
RDAB-5003
Switch
RDAB-8001
Level bubble
RDAB-8002
Adjustable base foot
RDAB-9001
Fan
RDAB-9002
Triangle bracket
RDAB-9003
Sample pan handler
RDAB-9004
Draft shield
RDAB-9005
Removal aid
RDAB-9006
Halogen Lamp