Metrohm 793 IC Sample Preparation Module User Manual
Page 25
2.4
2.4
2.4
2.4 Connection
Connection
Connection
Connection to
to
to
to aaaa Modular
Modular
Modular
Modular IC
IC
IC
IC System
System
System
System for Cation Elimination
793 IC Sample Prep Module/ 8.793.1003 Instructions for Use
21
7 SP Module A connection 3: H
2
O
x Pull the inlet capillary 28
28
28
28 marked with “H
2
O“ at SP Module A
connection 22
22
22
22 (see Fig. 6) through one of the rear panel
openings 41
41
41
41 or 43
43
43
43 of the 733 IC Separation Center.
x Mount a PEEK compression fitting 31
31
31
31 (6.2744.010) on the
end of inlet capillary 28
28
28
28 and screw this on to the second
PEEK filter unit 36
36
36
36 (6.2821.100) (see Fig. 7).
x Mount coupling 35
35
35
35 on to the inlet of the PEEK filter unit and
push this coupling on to outlet end of the second pump
tubing 33
33
33
33 (see Fig. 7).
x Mount suction tubing: cut a piece of PTFE Tubing 30
30
30
30
(6.1803.020) to the desired length.
x Mount a PEEK compression fitting 31
31
31
31 (6.2744.010) on one
end of PTFE tubing 30
30
30
30 and screw this on to coupling 32
32
32
32..
x Push coupling 32
32
32
32 on to the inlet end of the second pump
tubing 33
33
33
33 (see Fig. 7).
x Immerse the other end of the suction tubing in a vessel con-
taining rinsing solution (normally dist. H
2
O) and fix in place.
x Pull outlet capillary 27
27
27
27 marked with “Waste“ at SP Module A
connection 22
22
22
22 (see Fig. 6) through one of the rear panel
openings 41
41
41
41 or 43
43
43
43 of the IC Separation Center 733.
x Lead outlet capillary 27
27
27
27 to a sufficiently large waste container
and fix in place.
8 Startup of 793 IC Sample Prep Module
x Set switch
222 to "OFF".
x Switch on 793 IC Sample Prep Module with mains switch 13
13
13
13
and set switch
333 to "ON".
x Adjust the contact pressure for both tubing cartridges: press
contact pressure lever 5
555 upwards until the solutions just start
to be drawn in. Then press the contact pressure lever
upwards until it clicks once more to obtain optimal contact
pressure.
x Check all tubing from the storage vessels through the tubing
cartridges and the SP Module A up to the waste containers
for leakage of liquids. If liquid escapes anywhere the
corresponding compression fitting must be tightened further
or changed.
x Before using the SP Module A for sample pretreatment, its
cation exchange material should be conditioned. Inject 30%
sodium hydroxide 15 times (five injections per unit) using the
sample program of the system “Neutralization” as described
in the following section. The run time can be 20 min. each
while the separation column doesn’t have to be installed.
Pump tubings are consumable material with a lifetime which depends
on the contact pressure. This is why the tubing cartridges should be
raised completely by loosening snap-action lever
10
10
10
10
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).