Metrohm 761 Compact IC - Manual (Page 27)

2.3 Attaching the accessories
761 Compact IC
17
2.3.4 Connection of the drain tube for bottle rack
The 761 Compact IC has a connection at the rear to which a drain tube
for discharged liquids in the bottle rack can be attached. Proceed as
follows:
1 Connect drain tube
• Mount 6.1816.020 Silicone tubing on connection nipple 14
(see Fig. 2).
2 Lead drain tube to collecting vessel
• Lead the other end of the drain tube to a suitable collecting
vessel and fix in place.
2.3.5 Connection of PEEK capillaries
For the connections between high-pressure pump and detector block
6.1831.010 PEEK capillaries (i.d. = 0.25 mm, e.d. = 1 /
16
" ) are used
which are connected using either 6.2744.010 PEEK compression fit-
tings (long) or 6.2744.070 PEEK compression fittings (short).
These PEEK connectors can also be used to connect 6.1822.010 PTFE
microcapillaries (i.d. = 0.3 mm). Proceed as follows:
Capillaries fitted with new connectors must have a perfectly flat cut
surface. To cut PEEK or PTFE capillaries it is best to use the
6.2621.080 Capillary tubing cutter.
1 Mount compression fitting
Slide a compression fitting 54 (6.2744.010) or a compression
fitting 55 (6.2744.070) over the end of the capillary 56 to be
fastened as shown in Fig. 7.
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 54 or 55 by hand (never use tools).
54 Compression fitting (6.2744.010)
55 Compression fitting (6.2744.070)
56 Capillary
6.1831.010 PEEK capillary or
6.1822.010 PTFE microcapillary
54 56 55
Fig. 7: Connectors for capillaries