Carbon Prefilter Replacement - Thermo Scientific EASYpure RoDi Operating Manual

Section 9
Maintenance and Servicing
RO Carbon Prefilter
Replacement
9-6 EASYpure RoDi
Chlorine and particulates will damage your RO membrane, resulting in
premature membrane failure. Therefore, your EASYpure RODI uses an
extruded RO carbon prefilter combination to remove chlorine and
particulates from your feedwater. The frequency with which the internal
RO carbon prefilter will require replacement depends on your feedwater
characteristics and daily usage. Install the internal RO carbon prefilter as
follows:
1. Turn off the EASYpure RODI system and disconnect the feedwater.
2. Open the cartridge access door in the rear of the unit by pushing down
the door latch.
3. Remove the cartridge in the RO carbon prefilter position by pulling
the cartridge straight up until the upper socket is in the keyhole of the
keyway. Next pull the cartridge straight out.
4. Remove the new RO carbon prefilter from its plastic bag.
5. Wet the o-rings with water on both end caps.
6. Press the upper end cap into the RO carbon prefilter position until it
bottoms out. Refer to Fig. 7 if needed.
7. Lower the cartridge and insert the lower end cap into the lower socket
until it is firmly seated.
8. Close the cartridge access door.
9. Reconnect the feedwater.
10. Reset the carbon prefilter timer. See To Reset Carbon Prefilter Timer.
11. Turn unit on and from "IdL" press the Start/Stop key to begin unit
operation. The "Low RO Purity" LED may turn on and off as air is
purged out of the cartridge. Once the RO Prefilter has been wetted, the
LED should remain off.
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