7 tubing connections – Metrohm 813 Compact Autosampler User Manual
Page 20
2.3 Attaching the accessories
14
813 Compact Autosampler
2.3.7 Tubing connections
Pump tubings are consumable material with a lifetime which
depends on the contact pressure (see section 4.4 Maintenance
and servicing). This is why the tubing cartridges should be
raised completely by loosening snap-action lever 15 on the
right-hand side if the pump is to remain switched off for a
considerable length of time (the set contact pressure remains
unchanged).
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.
For transferring the sample from the 813 Compact Autosampler
to an injection valve the following tubing connections must be
made:
1 Install pump tubing
• Release tubing cartridge
11
from holding clamp
14
by
pressing down snap-action lever
15
and remove it from
mounting pin
10
on the 813 Compact Autosampler (see Fig.
9).
• Press contact pressure lever
13
on the tubing cartridge down
as far as it will go.
• Insert pump tubing
8
in the tubing cartridge
11
as shown in
Fig. 9. The black stopper
32
must click into the correspond-
ing holder on the left-hand side of the tubing cartridge.
• Place the tubing cartridge
11
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.
2 Connection needle – pump tubing
• Mount a PEEK compression fitting
6
on both ends of the
PEEK capillary
7
.
• Screw the PEEK capillary
7
with the PEEK compression fitting
6
on to the PEEK compression fitting
5
already mounted on
needle holder
4
(see Fig. 9).
• Screw a coupling
31
on to the PEEK compression fitting at
the other end of PEEK capillary
7
.
• Push coupling
31
on to the inlet end of the pump tubing
8
(see Fig. 9).