Metrohm 838 Advanced Sample Processor Installation Instructions - Manual (Page 37)

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. Ultra-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).