Metrohm 813 Compact Autosampler - Manual (Page 44)

4.4 Maintenance and servicing
38
813 Compact Autosampler
To replace a pump tubing proceed as follows:
1 Remove old pump tubing
• Press contact pressure lever 11 on the tubing cartridge down
as far as it will go.
• Release tubing cartridge 11 from holding clamp 14 by press-
ing down snap-action lever 15 and remove from mounting
pin 10 at the 813 Compact Autosampler (see Fig. 1).
• Remove old pump tubing.
2 Insert new pump tubing
• Insert the new pump tubing 8 (6.1826.040) in the tubing
cartridge as shown in Fig. 9. The Stopper 32 must click into
the corresponding holder on the left-hand side of the tubing
cartridge.
• Place the tubing cartridge on mounting pin 10 and press
down on the right-hand side until snap-action lever 15 clicks
into position on holding clamp 14 . Take care that no kinks are
formed in the pump tubing.
3 Set contact pressure
• Press contact pressure lever 13 upwards until the solution
just starts to be drawn in. Then press contact pressure lever
upwards until it clicks once more to obtain optimal contact
pressure.
The 6.1826.0X0 pump tubing is made of PVC and must not be
used for rinsing with solutions which contain acetone. In such
cases, rinse with different pump tubing or a different pump.