Metrohm 838 Advanced Sample Processor Installation Instructions - Manual (Page 33)

3.3 Fitting the accessories
838 Advanced Sample Processor, Installation 27
3.3.11 Connection of the ultrafiltration cell
60 PEEK pressure screw (6.2744.010)
56 Pump tubing (6.1826.070)
61 Pump tubing (6.1826.030)
62 PEEK coupling (6.2744.030)
63 PTFE capillary (6.1803.050)
64 PVDF pressure screw (6.2744.000)
65 PTFE capillary (6.1803.060)
66 PTFE capillary (6.1803.080)
67 PEEK capillary (6.1831.060)
29 Upper section of the filtration cell
31 Lower section of the filtration cell
Figure 23 Connecting the
ultrafiltration cell
Use only the specified 6.2744.000 PVDF pressure screws to con-
nect to the ultrafiltration cell. If the 6.2744.010 PEEK pressure screws
are used, this may result in stress cracking on the ultrafiltration cell!
1 Pump tubing - filtration cell connection
• Fit a PEEK pressure screw 60 to one end of the PTFE capillary 65.
• Screw a coupling 62 onto this pressure screw.
• Fit a PVDF pressure screw 64 onto the other end of the PTFE capil-
lary.
• Fit this end of the PTFE capillary with the PVDF pressure screw to
the inlet opening 35 on the underside of the ultrafiltration cell (see
Figure 9).
• Fit the coupling 62 onto the outlet end of the pump tubing 56 (see
Figure 10).
2 Filtration cell - waste tubing connection
• Fit a PVDF pressure screw 64 to one end of the PTFE capillary 66.
• Fit this end of the PTFE capillary with the PVDF pressure screw to the
outlet opening 36 on the underside of the ultrafiltration cell (see Fig-
61
63
62
64
65
66
60
67
56
64
29
31
60
62
56