Metrohm 838 Advanced Sample Processor Installation Instructions - Manual (Page 29)

3.3 Fitting the accessories
838 Advanced Sample Processor, Installation 23
3.3.9 Tubing connections
Pump tubing is consumable material whose service life depends on
the contact pressure. You should thus fully raise the tubing cartridges
by releasing the snap-action lever 51 at the right-hand side if the
pump is to be switched off for a long time (this will maintain the set op-
timum contact pressure).
The 6.1826.0X0 pump tubing consists of PVC or PP and may thus not
be used for rinsing with solutions containing acetone . In such cases,
please use different pump tubing or use a different pump for rinsing.
Figure 22 Fitting pump tubing
48 Tubing cartridge 56 Pump tubing (6.1826.0X0)
49 Contact pressure lever Type, depending on intended
application
51 Snap-action lever 57 Stopper
26 Aspirator tubing/ capillary
(6.1803.0X0)
PTFE tubing/capillary or PEEK
capillary
The colour indicates the mate-
rial and the dimensions of the
pump tubing.
54 PEEK pressure screw
(6.2744.010)
58 PEEK coupling (6.2744.160)
with tubing guard
55 PEEK coupling (6.2744.034) 59 PEEK filter unit (6.2821.120)
optional
60 Delivery capillary
Delivery end for connection to:
dialysis cell
ultrafiltration cell etc.
26 54 55 56 57 48 49 51 57 58 54 26 54 59 54 60