Metrohm 944 Professional UV/VIS Detector Vario - Manual (Page 39)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
6 Operation and maintenance
944 Professional UV/VIS Detector Vario (2.944.0010)
￭￭￭￭￭￭￭￭ 31
Dismantling and cleaning the flow-through cell
NOTE
Ex works, the retaining screws are tightened with a torque wrench. This
guarantees a pressure stability up to 5 MPa (50 bar).
Once the flow-through cell has been opened and closed again, this
maximum pressure stability can no longer be guaranteed.
Prerequisites:
￭ Rinsing the flow-through cell with solvent was ineffective.
Required tools:
￭ To open the measuring cell, you need a slotted screwdriver, size 5.
￭ Seals (6.2764.000).
1 Removing the flow-through cell
￭ Unscrew the input capillary and the output capillary.
￭ Loosen and remove the knurled screws.
￭ Remove the flow-through cell from the optical block.
5
4 3
1
4
3
1
2
6
Figure 12 Flow-through cell – parts
1 Retaining screw 2 Outer seal
3 Lens 4 Inner seal
5 Measuring cell – opening 6 Cell holder