DAD 6.1L/DAD 2.1L/MWD 2.1L user manual V6700, version 3.2
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Maintenance and Care
Maintenance and Care
In this chapter, you find the information relevant for maintenance, care and
storage. Additionally, you find instructions for maintenance tasks that may
be performed by the customer. In case there are any maintenance tasks on
that you do not find instructions here, contact your supplier or the Technical
Support.
Organic eluents are toxic above a certain concentration. Ensure that work
areas are always well-ventilated! When performing maintenance tasks on
the device, always wear safety glasses with side protection, protective
gloves, and an overall.
All wetted components of a device, e. g. flow cells of detectors, have to be
flushed with isopropanol first and water second before being maintained,
disassembled or disposed.
Opening the Module
The device may only be opened by the Technical Support of KNAUER or any
company authorized by KNAUER.
Electric shock
Danger of electric shock from voltage-carrying parts inside the device. The
housing serves as a protective cover against voltages inside the device.
“Leak was detected”
Switch off the device. Remove the leak and start
the device afterwards.
N
“No D2 lamp
detected”
Check if the deuterium lamp was installed cor-
rectly.
R
“Recommended D2
lamp life exceeded”
The recommended operating time of the deute-
rium lamp of 2000 hours was exceeded. Replace
the lamp.
“Recommended
HAL lamp life
exceeded”
The recommended operating time of the halogen
lamp of 1000 hours was exceeded. Replace the
lamp.
S
“Shutter position
failed”
Malfunction of cover motor
“Spectrum buffer
overflow”
The internal 3D data buffer was used up because
of a LAN connection error.
“Spectrum output
busy or not ready”
3D data acquisition can not be started. Wait until
data transfer is finished and continue afterwards.
T
“Temperature con-
trol failed”
The upper temperature limit of the lamp unit was
exceeded.
W
“WL/BW out of
spectral range”
Selected path length and bandwidth exceed the
spectral range. Expand the selected spectral range
or the selected path length/bandwidth.
”WL validation
failed”
Wavelength accuracy test failed. Restart the vali-
dation. Holmium oxide and/or H
α
, H
β
lines do
not meet the specifications.
In case the system
message repeats itself, inform the Technical Sup-
port of KNAUER.
System Message
Problem and Solution
