Operating Instructions RF-2000
64
8 Maintenance
8.1 Maintenance of Flow Cell
Important:
When the xenon lamp is lit, the flow cell is irradiated by the
excitation light beam. Do not stave into the excitation light
beam, while the xenon lamp is lit.
8.1.1 Mounting and dismounting the flow cell
(1) Loosen the screw and take the tubes out of the tube holder.
Loosen the cell mounting screw and pull out the flow cell upward.
(2) To mount the flow cell, pushing the flow cell, set the pins in the pin holes to fix
the position, and tighten the cell mounting screw.
Fasten the tubes with the tube holder and tighten the screw to fix the tubes.
8.1.2 Cleaning the flow cell
Dirty cells and piping may cause phenomena such as an unstable baseline or a large
baseline noise due to pulsation of the solvent delivery pump. In this case, clean the
flow lines with the following procedures.
Item to be prepared Qty
Syringe 1
Adapter 1
Water 100mL
Acetone 50mL
0.1N nitric acid 50mL
Warning:
Mixing nitric acid with organic solvent may form an explosive
substance. Be extremely careful when handling nitric acid.
(1) Deliver acetone from the cell inlet pipe using the syringe and adapter.
(2) Use distilled water to flush the flow lines as in step 1.
(3) Flush the flow lines with 0.1N nitric acid.
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