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Section 6
Controls and Normal Operation
Pressure Gauge
Operational Modes
Run Mode
6-4
EASYpure RoDi
This unit includes a pressure gauge to monitor the RO membrane pressure.
The pressure gauge is located on the lower right side of the unit. A pressure
of 65 psi (4.5 bar) is ideal for operation of the membrane; lower pressures
produce less RO product water quantities (slower filling of reservoir) and
higher pressures produces more RO product water quantities (quicker
filling of reservoir.)
Since not all qualities of permissible feedwater will reach maximum
resistivity after one pass through the unit's cartridges (especially as the
cartridges near exhaustion), the EASYpure RODI has two operational
modes; Run and Standby.
Note When the unit is first put in the Run Mode, the display will show
10.0 for a few seconds. This is an arbitrary number that indicates the unit
is running. Any number that appears after 10.0 indicates purity.
Note Do not put unit into Idle Mode or turn off the EASYpure RODI
during non-work hours. Doing so will allow bacterial growth and other
contamination of the water in the system. As a result, the system will
require a lengthy rinse-up period at the beginning of the work day to
achieve high-quality product water.
In the Run Mode, the pump recirculates water through the cartridges and
the UV lamp. It is recommended that the EASYpure RODI be left in the
Run Mode during the day. In the Run Mode, the purity meter display
indicates the resistivity (temperature compensated to 25°C) of the water
available for draw off.
1. From "IdL" press the START/STOP button to start. The EASYpure
RODI's pump will begin to run and display the resistivity of the water
in megohm-cm.
2. Allow the water's resistivity to rise to the desired purity before drawing
off water.
Also in the Run Mode, the RO operation automatically turns on to fill the
reservoir tank as needed.
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Thermo Scientific
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