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14.2 Replacing the pretreatment cartridge
If a drop in the stated capacity is given because module blockage has
resulted from operating the system with insufficient preconditioning,
then the pretreatment cartridge must be replaced.
Proceed as follows to replace the pretreatment cartridge:
1.
Empty the storage tank.
2.
Separate the system from the mains by unplugging the mains plug.
3.
Turn the supply of feedwater off.
4.
Open the dispensing valve until water no longer flows out, then close it again.
5.
Take off the cartridge cover.
6.
Remove the three quick-connects from the pretreatment cartridge and close the con-
nectors with the stoppers that have been saved.
7.
Draw the spent pretreatment cartridge out from the guide and replace it with the new
pretreatment cartridge.
8.
Remove the stoppers from the new pretreatment cartridge and save them.
9.
Fit the quick-connects on the pretreatment cartridge so that they audibly click into po-
sition.
10.
Re-open the supply of feedwater.
11.
Connect the system to the mains and check the connections for leakage.
12.
Replace the cartridge cover.
13.
Discard the first tank filling.
Thermo Scientific Barnstead Smart2Pure
Ultrapure water system
31
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