Metrohm 844 UV/VIS Compact IC - Manual (Page 33)

2.3 Attaching the accessories
844 UV/VIS Compact IC / Gebrauchsanweisung 8.844.1051
21
2.2.3 Location
Position the instrument in the laboratory at a location convenient for
operation, free from vibrations and protected against a corrosive at-
mosphere and contamination by chemicals.
To avoid disturbing temperature influences on the insulated column
compartment, the instrument must be protected against direct sun-
light.
2.3 Attaching the accessories
2.3.1 Connecting the syringe and aspirating tubing
For the manual filling of sample loop 45/63 mounted at the injection
valve the 6.2816.020 Syringe and PTFE aspirating tubing 41 (already
connected to the injection valve) are required. These accessories are
attached and adjusted as follows:
1 Connecting the syringe
• Remove the plastic stopper from connection 7 on the front
panel of the 844 UV/VIS Compact IC.
• Push 6.2816.020 Syringe(without needle) into connection 7
until it reaches the stop.
2 Pull out the aspirating tubing
• Pull the PTFE aspirating tubing 41 connected to injection
valve 46/61 through feedthrough 7 by hand as far as
required.
2.3.2 Connecting the drainage tubing for the inner compartment
The 844 UV/VIS Compact IC has a connection 39 on its front panel to
allow any escaped liquid to be drained off from the inner compartment.
A piece of drainage tubing can be attached to it. Proceed as follows:
1 Connecting the drainage tubing
• Push 6.1816.060 Silicone tubing onto the connection nipple
at the bottom right-hand side of the front panel.
2 Lead the drainage tubing into a drain
• Lead the other end of the drainage tubing into a drain and fix
it in position.
2.3.3 Connecting PEEK capillaries
With the versions 2.844.0010, 2.844.0020, 2.844.0110 and 2.844.0120,
the connections from the high-pressure pump to the detector consist of
6.1831.010 PEEK capillaries (i.d. = 0.25 mm, o.d. = 1/16"), which are
connected with either 6.2744.010 PEEK compression fitting (long) or