Type II Water System
5-1
Thermo Scientific
Section 5
Maintenance and Servicing
Clean the exterior of the unit by wiping surfaces with a lightly dampened
cloth containing a mild soap solution. Rinse and wipe dry.
The prefilter is designed to remove particles from your incoming water
source. The lifetime of the filter depends on the quality of the feed water.
If a pressure drop is detected by the unit, the display will alert the user to
replace prefilter. All pressure sensor data can be obtained in the RO
Options screen. The pressure differential represents the difference between
the prefilter inlet pressure and the prefilter outlet pressure.
Before replacing the prefilter, ensure that all power and water are
disconnected from the unit.
1. Open the front left door.
2. Remove the prefilter (see Fig. 8) by first pressing the upper and lower
thumb buttons on the quick disconnect fittings.
3. Remove the prefilter by pulling the cartridge straight out.
4. Replace the prefilter by following the instructions located in the
“Prefilter Installation” section of this manual.
5. Reset the prefilter timer by following the “Timers” section of this
manual.
Prefilter Replacement
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