25
BÜCHI
Fat Determination
B-820/B-821
If they do NOT agree, proceed as follows:
1. Remove the cover of the fuse block
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.
2. Pull the voltage selector card carefully out of the fuse block
with a needle-nosed pliers.
3. Orient the selector card so that the voltage that is to be
used can be inserted into the fuse block in the direction of
the arrow. Turn the printed side (plastic part on the selec-
tor card) to face forward.
4. Replace the cover on the fuse block and check that the
pin is showing in the hole of the desired operating voltage.
5. Connect the power cable to the rear of the Autosampler
and to the B-820 unit (refer to Figure 8: "Connection of
periphery units at the rear of the unit“)
•
4.11.9 Aligning the syringe needle with the
injection head of the B-820 unit
At this stage, the Autosampler has been installed on the B-
820 unit, the syringe/needle has been fitted and the data cable
has been connected to the B-820 unit. The voltage has been
correctly set and the Autosampler is connected to power.
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Latch
햳
Hinge
In order to align the syringe/needle with the injection head of
the B-820 unit proceed as follows:
1. Check that the Autosampler is OFF (0). Press down the
latch (refer to Figure 16: Carousel support) of the carousel
support 5 and swing out the support.
2. Switch the Autosampler ON (I). Lift the syringe cariage slowly
by hand until a click can be heard. Now lower the carriage
until the needle is just a little above the injection head.
3. Loosen the screws of the mounting plate sufficiently to
shift it by hand together with the Autosampler.
4. Align the needle accurately with the injection head. Then
retighten the screws of the mounting plate, so the
Autosampler cannot be moved.
5. Lower the syringe carriage two or three times until the
syringe needle punctures the injection head septum. You
can now check that the syringe and the syringe needle
are properly aligned with one another. Repeat this
procedure each time you replace the syringe/needle.
6. To return the syringe carrier to its rest position, raise the
syringe carrier until a click can be heard. Then lower the
carriage again by a fraction of an inch to rest on the stop.
4 Putting into operation
Figure 15: Power entry module
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Figure 16: Latch of carousel support
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햳
