Instruction manual

9-2 EASYpure II RF Thermo Scientific
Section 9
Maintenance and Servicing
1. Drain the system.
a. Place the 0.2 micron final filter over a sink or place a bucket or
other suitable large container under the filter and draw off water as
described under Water Draw-Off in the Operation section of this
manual. Draw off water until the water level in the feedwater
reservoir is lowered to the point that the reservoir float switch
disables the pump. Lift draw-off valve to closed position.
b. Disconnect the power cord from the power entry module.
c. Turn the unit around to provide access to the drain plug on the
lower edge of the back panel.
d. Place the drain plug over a sink, or place a bucket or other suitable
large container under the drain plug. Remove the drain plug by
turning it while pulling until it comes out.
e. Drain remaining water from the reservoir and system.
f. Replace the drain plug, taking care to fully insert it into the drain
tubing.
g. Remove cartridges and install empty cartridge tubes according to
the instructions in Cartridge Replacement.
h. Remove 0.2 micron final filter and install the hose barb that was
shipped with the system.
2. Remove Ventgard cap and pour 6 liters of pretreated feedwater into
reservoir.
3. Add 10ml to 20ml of household chlorine bleach (5.25% sodium
hypochlorite) to reservoir.
Warning Avoid splashing disinfecting solutions on clothing or skin. Ensure
all piping connections are tight to avoid chemical leakage. Ensure adequate
ventilation. Carefully follow manufacturer’s safety instructions on labels of
chemical containers and material safety data sheets.
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4. Reconnect power cord to the power entry module and turn unit on.
Press the “START” button and put unit into Run Mode.
5. Allow the unit to recirculate the disinfecting solution for thirty
minutes. Cycle the draw-off valve to sanitize the valve.
System Sanitation