21
Cleaning the Resistivity Cell
1.
Turn unit off.
2.
Disconnect incoming water line at quick disconnect.
Depressurize system by opening outlet valve.
3.
Disconnect the EASYpure LF from the power sup-
ply.
4.
Remove the power cord from the power entry mod-
ule, and remove the pump interlock plug from the
rear of the unit.
5.
Remove the screws securing the EASYpure LF cov-
er.
6.
Remove the cover by lifting it straight up. Remove
the filter and Luer fitting. Carefully remove the front
cover. Disconnect membrane switch lead from the
printed circuit board.
7.
Remove the screw holding the cell-cable retaining
clip.
8.
Disconnect the cell lead from the printed circuit
board and gently pull the cable out of the EASYpure
LF frame.
9.
Unscrew and remove the cell.
10. Carefully remove the O-ring before cleaning the
cell.
11. Wash the cell in a mild detergent solution or a 10%
Hydrochloric or Sulfuric acid solution (follow acid
manufacturers warnings and recommended han-
dling procedure). This may be done in an ultrasonic
cleaner or with a soft brush.
12. Thoroughly rinse the cell in deionized or distilled
water following the detergent or acid cleaning.
13. After cleaning, reinstall and check the o-ring on cell;
replace if necessary.
WARNING
Depressurize system prior to opening cartridge ac-
cess door.
CAUTION
The cell electrodes are etched to improve wetting
characteristics. Do not mechanically abrade or
damage this surface (i.e. do not clean with a wire
brush, sandpaper, etc.).
WARNING
Carefully follow manufacturer’s safety instructions
on labels of chemical containers and material
safety data sheets.
CAUTION
Do not immerse the entire cell assembly in clean-
ing solution, only the electrode portion.
M
AINTENANCE AND
S
ERVICING
