Metrohm 833 IC Liquid Handling Unit - Manual (Page 89)

9.2 Care and maintenance
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
81
3 Set the contact pressure
• Press contact lever 5 until the solution is just aspirated. Then
press the contact lever up by 1 further click to achieve the
optimum contact pressure.
9.2.5 Changing the filter
The 6.2821.120 Filter unit PEEK 22 (see Fig. 25) serves to avoid
contamination by abrasive particles of the pump tubings. The filter unit
consists of the housing 82, the filter 83 and the connector 84 to be
screwed into the housing 82. For the connection of capillaries PEEK
compression fittings 17 (6.2744.010) must be used.
New filter 83 are available as an option with the ordering number
6.2821.130 (10 pieces).
To change the filter 83 dismantle the Filter unit PEEK 22 according to
Fig. 25, replace the filter 83 and put it together again. Install the Filter
unit PEEK 22 according to Fig. 7 in the flow path again.
For the connection of the filter unit, please note the flow direction
arrow printed on the housing.
The filter unit is filled with isopropanol when new. Rinse your IC system
carefully after the first installation of a new filter unit.
Fig. 25: Filter unit PEEK 6.2821.120
16 6.1803.0X0 Aspiration
tube/capillary
PTFE tubing/capillary, depends on
version, see Section 10.2 Standard
equipment
17 6.2744.010 PEEK compression
fitting
23 Discharge capillary
delivery side for connection to:
suppressor module
sample preparation module
dialysis cell
ultrafiltration cell
82 Filter housing
83 Filter 6.2821.130
84 Filter connector
17 16 17 84 83 82 23