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Cell Cleaning
Thermo Scientific
Maintenance and Servicing
Section 12
To clean the exterior of the unit, first disconnect electrical service to the
unit. Then wipe exterior surfaces with lightly dampened cloth containing
mild soap solution. Rinse and wipe dry.
Caution Feed water must be disconnected and the system must be
depressurized before performing the cell cleaning procedure.
1. Disconnect inlet water and depressurize. See "System Depressurization"
section.
2. Turn unit OFF. Open right side door and remove PC board cover.
3. Disconnect cable from J2 and snip plastic cable tie located on the
inside top of unit.
4. Unscrew and remove the cell by turning the gray bushing
counterclockwise. Carefully remove O-ring to clean the cell.
5. Wash the cell in a mild detergent solution or a 10% inorganic acid
solution (follow acid manufacturers recommended handling
procedure). This may be done in an ultrasonic cleaner or with a soft
brush.
Warnings
•
Avoid splashing mild detergent or weak acid on clothing or skin
•
Ensure all piping connections are tight to avoid chemical leakage
•
Carefully follow manufacturer's safety instructions on labels of
chemical containers and material safety data sheets.
6. Thoroughly rinse the cell in deionized or distilled water following the
detergent or acid cleaning.
7. After cleaning, check the O-ring; replace if necessary.
8. Reinstall the cell into the cell well and hand-tighten.
9. Reroute the cable and reconnect to J2 on circuit board.
10. Replace PC board cover and close door.
11. Reconnect water and turn unit ON.
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Nanopure Life Science (UV/UF)
12-1
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