Metrohm 818 IC Pump - Manual (Page 15)

2.3 Attaching the accessories
818 IC Pump / 8.818.1023 Instructions for Use
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2.3 Attaching the accessories
2.3.1 Capillaries
Some of the connections under high pressure between the 818 IC
Pump and the IC system must be set up by the user, see section 2.4.
For that the 6.1831.010 PEEK capillary (i.d. = 0.25 mm, o.d. = 1 /
16
" ,
length = 3 m) supplied in the accessories of the 818 IC Pump can be
used.
Capillaries fitted with new connectors must have a perfectly flat cut
surface. For PEEK capillaries it is best to use the 6.2621.080
Capillary tubing cutter
Fig. 3: Connect capillaries
19 PEEK capillary (6.1831.010) 20 Compression fitting (6.2744.010)
For the connection of 6.1831.010 PEEK capillaries or of the 6.1834.000
PTFE aspirating tubing, the supplied 6.2744.010 PEEK Compression
fittings are used. It is best to proceed as follows:
1 Mount compression fitting
Slide a compression fitting 20 (6.2744.010) over the end of the
capillary 19 to be fastened as shown in Fig. 3.
2 Insert capillary in connection
Push capillary end in the corresponding connection as far as it
will go (to avoid dead volume).
3 Tighten compression fitting
Tighten compression fitting 20 by hand (never use tools).
2.3.2 Pulsation dampener
To protect the column material against pressure drops caused by the
injector, the use of a pulsation dampener connected between the pump
and the injection valve of the 820 IC Separation Center is
recommended. The optional 6.2620.150 Pulsation dampener MF is
very well suited to this purpose (see section 6.3).
The metal-free 6.2620.150 Pulsation dampener is supplied fully
assembled and has two connections for capillaries, for which two
20 19