3.3 Fitting the accessories
Metrohm 838 Advanced Sample Processor
,
Installation
31
Use only the specified
6.2744.000 PVDF pressure screws
for con-
nection to the dialysis cell. If the 6.2744.010 PEEK pressure screws
are used, this could cause stress cracking on the dialysis cell!
4 Connecting the waste container
Attach the 6.1803.040 PTFE capillary
74
(L =1 m) with a
6.2744.010 PEEK pressure screw to the 6.2744.034 PEEK
coupling on the delivery end of the
black-black
pump tubing
of
channel 2
of the peristaltic pump of the
838
Advanced
Sample Processor
(see
Chapter 3.3.12
and
Figure 22
). In-
sert the other end of the capillary into an adequately large
waste container and secure it there.
Connections for acceptor solution
1 Fitting the pump tubing to the 833 Pump Unit
Fit the two
pump tubings
6.1826.030
(
orange-yellow
stop-
pers) as described in
Chapter
3.3.9
, to the
833 Pump Unit
.
2 Connecting the aspiratory capillary for acceptor so-
lution
Attach one end of the 6.1803.040 aspiratory capillary
68
(L =1 m) with a 6.2744.010 PEEK pressure screw to the
PEEK coupling on the aspiration end of the
orange-yellow
pump tubing of
channel 1
of the
833
Pump Unit
(see
Chap-
ter 3.3.9
and
Figure 22
).
Insert the other end of the aspiratory capillary
68
into the ves-
sel with
acceptor solution
and secure it there. U
ltra-pure
water
which has been degassed beforehand (with N
2
, He or
vacuum) is normally used as the acceptor solution.
3 Connecting the dialysis cell
Attach the 6.1803.040 connection capillary
75
(L =1 m) with a
6.2744.010 PEEK pressure screw to the 6.2744.034 PEEK
coupling on the delivery end of the
orange-yellow
pump tub-
ing of
channel 1
of the
833 Pump Unit
(see
Chapter 3.3.9
and
Figure 22
). Guide the other end of the capillary through
one of the openings at the front or on the side of the 820
Separation Centre into the column chamber and screw it onto
the inlet opening
45
of the cell upper section
38
of the dialy-
sis cell using a 6.2744.000 PVDF pressure screw
64
(see
Chapter 3.3.7
and
Figure 18
).
Screw the 6.1831.050 PEEK capillary
76
(L =40 cm) with a
6.2744.000 PVDF pressure screw
64
to the outlet opening
44
of the cell upper section
38
of the dialysis cell (see
Chapter
3.3.7
and
Figure 18
).
