24
BÜCHI
Fat Determination
B-820/B-821
Syringe
mount
assembly
Side
locking
tabs
Solvent
line con-
nection
Syringe
carriage
Figure 14: Syringe/needle mounting hardware
Side
locking
tabs
Syringe
carriage
bracket
Red indi-
cator tab
4.11.6 Installing the syringe/needle assembly
Goggles should be worn during installation
To install the syringe/needle in the Autosampler proceed as
follows:
1. Open syringe mounting assembly by firmly lifting the side
locking tabs
simultaneously
and raising them to the
upper position. As this may require slight force, hold the
syringe mounting assembly down with the forefingers and
press the tabs
simultaneously
up with the thumbs. A
red indicator tab shows at the syringe mounting assembly
when the mounting is unlocked.
2. Refer to Figure 14a: Syringe/needle mounting: Guide the
syringe needle through the hole of the needle guide. Then
let the syringe rest on the lower bracket and press the
upper part of the plunger into the top slot.
3. Close the syringe mounting by holding the mounting with
one hand and pressing the side locking tabs down with
the other hand. Check that the mounting is fully closed
before pushing the side locking tabs down. It is closed
when the red signal tab is not visible.
4. Connect the solvent line laterally to the syringe (refer to
Figure 14b: Syringe/needle mounting). Slide the knurled
nut back from the end of the line. Push the line onto the
side connection of the syringe. Then tighten the knurled
nut at the syringe only by hand (do not use a tool).
5. Refer to paragraph 4.11.9 to align the syringe needle with
the injection head of the B-820 unit.
If the solvent line has not been connected correctly or not at
all, solvent may spray from the line.
4.11.7 Connecting the signal cable to the B-820
unit
A data cable is fitted to the Autosampler B-821 which emerges
at the rear of the unit. Insert the cable at the rear of the
B-820 unit into the corresponding interface (refer to Figure 8:
Connection of periphery units at the rear of the unit).
4.11.8 Connecting power to the Autosampler
B-821
Before connecting the Autosampler to the mains check that
the power switch is OFF (0). Then check the voltage rating
(230 V) on the serial number label and the position of the
white pin in the power entry module at the rear of the unit. If
they agree, go to Step 5.
4 Putting into operation
