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DI Cartridge Replacement
and Rinse-Up
Thermo Scientific
The frequency with which the cartridges will need replaced is dependent
on your feedwater characteristics, purity requirements, and daily usage.
Replace the cartridges when the product water purity drops below
acceptable levels of resistivity or when organic levels become too high.
Note Verify RO tank is full prior to cartridge replacement and rinse-up.
Note Remember, used cartridges can be recycled; See P.U.R.E. information
packed with your new cartridges.
1. Turn off the EASYpure RODI and depressurize system by opening
draw-off valve and allowing water to drain from the unit.
2. Remove the 0.2 micron final filter from the drawoff valve.
3. Open the cartridge access door in the rear of the unit by pushing back
the door latch.
4. Remove the cartridge in position 2 by pulling
the cartridge straight up until the upper socket
is in the keyhole of the keyway. Next pull the
cartridge straight out. Be sure to remove and
replace one cartridge at a time to avoid
draining UV chamber.
5. Remove a new EASYpure Ultrapure cartridge
from its plastic bag.
6. Wet the o-rings with water on both end caps.
7. Press the upper end cap into position 2 until it
bottoms out. Refer to Fig. 9-2.
8. Lower the cartridge and insert the lower end
cap into the lower socket until it is firmly
seated.
9. Repeat Steps 3-7 with the EASYpure High Purity/Low TOC cartridge,
placing it in position 3.
Warning Do not operate unit with door open. Inlet pressure may force
RO prefilter out of position.
10. Close the cartridge access door.
s
s
Section 9
Maintenance and Servicing
s
Flanges
O-rings
O-rings
Figure 9-2. Installation
EASYpure RoDi
9-7
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