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behrotest
®
K8 / K12 / K20 / K16 / K24 / K40
0591
11
© behr Labor-Technik GmbH
If the drip pan has been inserted, take it out. To do
this, lift the front side of the drip pan up a bit so you
can pull the hook over the panel of the exhaust
collector.
Position the sample rack bearing the samples on the
digestion unit in such a way that the sample vessels
locate in the holes in the digestion unit.
Put the exhaust collector in position and switch the
exhauster system on.
Select the
Start
menu item in the Start menu.
Prog 01/01
==>>
°C
154
The selected target temperature will now appear at top
left on the display, with the currently measured tempera-
ture next to it;
The time for this program step and total remaining time
are shown in the next line down.
The program step which is currently being run is shown
at the bottom.
Prog 01/02
154
°C
min
120
79
The K8 / K12 / K20 / K16 / K24 / K40 does not react
to any operation of the operating button while a pro-
gram is running. The program cannot be interrupted
by actuating the operating button. This is intended to
prevent any inadvertent interruption or manipulation
of a program while it is running.
Please use the mains switch (Page 7, 2.3) at the
bottom on the front side if you should need to abort a
digestion.
A signal is heard, and the heating system switches off,
when the program has been completed.
Finishing digestion and taking out the samples
Danger of burns! The inner zone of the
heating block and the sample vessels get
hot!
Never touch the hot glasses or the area
of the heating block around the mounting
holes with the bare hands. Always remove
the samples from the heating block using
the sample rack and allow them to cool as
described here.
Caution the heating block and the tubes
get 400 °C hot. If the sample vessels are
left in the heating block cooling down, they
may get jammed or even cracked due to
the different expansion coefficients.
Do not leave the sample vessels in
the block after digestion; proceed as
described here.
Hooks on which the sample rack can be suspended
are located on the mounting rail on the rear side of the
digestion unit. The rack will engage automatically in the
hooks if it is run along the rail during raising.
Grasp the sample rack using the two red handles.
Lift the rack carefully, together with the exhaust col-
lector. Run it along the mounting rail while doing so.
Lift the rack upward until you hear it engage.
Lower the rack carefully onto the hooks, in order to
check that it has engaged correctly. If this is not the
case, lower it again and repeat the above procedure.
Leave the exhaust collector on the sample rack until
the samples have cooled down.
Once the samples have cooled, switch the exhauster
system off.
Remove the exhaust collector from the sample rack
and suspend it in the cut-outs at the top end of the
mounting rail.
Insert the drip pan on the rail under the bottom of the
exhaust collector and shift it in. Lift it up a bit so the
hook can engage on the front panel of the exhaust
collector. Don’t forget removing the drip pan before
starting the next digestion.
The sample rack can now be removed for further
processing of the samples.
Hook
