Metrohm 833 IC Liquid Handling Unit - Manual (Page 28)

3 Basic instrument
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
20
4 Attach coupling to pump tubing
• Attach PEEK coupling 18 to the aspiration end of pump
tubing 19 for both channels (see Fig. 7).
• Mount PEEK coupling 21 with the tubing security device
(6.2744.160) to the delivery end of pump tubing 19 for both
channels.
This is done by dismantling the tubing security device and
first pushing the sleeve nut and the compression piece onto
the tubing.
Attach the tubing to the PEEK coupling and screw the sleeve
nut onto the coupling in order to secure the tubing.
5 Mounting of filter unit
• If contained in the standard equipment (see Section 10.2
Standard equipment), screw 6.2821.120 PEEK filter unit 22
onto PEEK coupling 21 (6.2744.160) by using two PEEK
compression fittings 17 (6.2744.010) and a piece of
aspiration tubing/capillary 16 (6.1803.0X0) at the delivery end
of pump tubing 19.
Setting the contact pressure correctly:
Press contact lever 5 until the solutions are just aspirated. Then press
the contact lever up by 1 further click to achieve the optimum contact
pressure.
1 Remove tubing cassettes
• Loosen the two tubing cassettes 4 by pressing in spring lever
7 of holding clip 6 and unhinge them from holding pin 2 of
the 833 IC Liquid Handling Unit (see Fig. 1).
2 Insert pump tubing
• Press contact lever 5 on the two tubing cassettes down as far
it will go.
• Insert pump tubing into each tubing cassette as shown in
Fig. 7.
Stopper must click into position in the corresponding holder
on the left-hand side of the tubing cassette.
3 Attach tubing cassettes
• Hinge the tubing cassettes on holding pin and press down
on the right –hand side until spring lever clicks into position
in holding clip 6. Take care that the pump tubing does not
kink.