Internal Di Cartridge - Thermo Scientific ThermoFlex Manual De Instrucciones

Section 5
Internal DI
Cartridge
CAUTION
CAUTION
5-2 ThermoFlex
Note his option is not available on high-temp chillers.
T
A partial flow DI filter cartridge is designed to maintain water resistivity between
1 and 3 MΩ-cm.
Note he DI option results in a 0.5 gpm reduction of available flow.
T
Do not use a Deionization (DI) filter cartridge with Inhibited EG or In-
hibited PG. A DI filter will remove inhibitors from the solution rendering
the fluid ineffective against corrosion protection. Also, inhibitors increase
fluid conductivity.
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The controller will display a High Resistivity
or a Low Resistivity warning message when
the process fluid resistivity exceeds the limit set
in the controllers RESISTIVITY SETTINGS
display, see Section 4.
Remove the two thumbscrews securing the DI
access panel to the top of the chiller.
If there is a cartridge in place, first undo the
hose fitting by pressing on the quick disconnect
located on the top white connection.
The DI Cartridge will overpressurize if it is removed from the chiller
before removing the hose fitting.
Hose Fitting
Quick Disconnect
Figure 5-3 DI Fittings
Note The cartridge can be changed with the chiller running, however, since
the cartridge runs in a parallel arrangement, disconnecting the cartridge adds
0.5 gpm to the main flow. The additional flow will cause an increase in system
pressure which may cause a high fluid pressure fault.
Access Panel
White Connector
Blue Connector
Figure 5-2 Internal DI Cartridge
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Next rotate the cartridge ¼ turn counter-clockwise
and then pull the cartridge straight up to remove it.
Remove the new cartridge from the shipping bag.
The cartridge has a blue and a white connector.
Lower the cartridge into the chiller with the blue
connector facing downward. Press down on the
cartridge lightly to engage and then rotate it ¼ turn
clockwise (do not over rotate) or until you feel the
filter click into place.
Push the hose fitting into the quick disconnect
located on the white end of the cartridge. Replace
the access panel and thumbscrews.
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