Hitachi CHROMASTER 5160 Instruction Manual page 359

4.4 Maintenance/Check Procedure
Check and clean the flow cell in the following procedure.
(1) Unplug the connector of thermostatic flow cell control cable.
(2) Loosen the clamp screws and take out the flow cell section.
(3) Visually check the inside of flow cell for sticking of foreign
material (such as crystallized substance) and for
contamination.
If the inside of the cell is contaminated, cleaning is required.
Detergent to be used varies with the mobile phase which
has been used. When the mobile phase used is aqueous,
deliver distilled water with the pump at flow rate 1.0 mL/min
and pressure 1.0 MPa or lower at first for cleaning, and
deliver ethanol (acetone), etc. when the mobile phase used
is an organic solvent.
CAUTION: If the flow cell is pressurized excessively, it may
be broken.
Be sure to set the pressure limiter to max.
1.0 MPa before pumping liquid into the flow cell.
(4) Visually check the cell area for liquid leakage.
If liquid leaks, the tubes should be clamped securely.
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