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9.
Screw the filter housing back on.
10. Open the feedwater supply of the system.
11. Check the filter housing is leak-proof.
12. Switch the pure water system on.
13. Replace the covering hood on the storage tank.
The system is now ready for use.
15.4 Replacing the ion exchanger
(see the „Putting the system into operation" section)
Before taking off the quick connectors (12, 13) from the ion exchanger (11),
the pressure in this must first be released by switching the system off so that
no water flows out.
1.
Switch the system off at the operating unit (5).
2.
Remove the front cover (6) from the storage tank.
3.
Take off the quick connectors for raw water (12) and pure water (13) from the ion exchang-
er (11).
4.
Remove the exhausted ion exchanger (11) from the storage tank depression and exchange
it for a new ion exchanger.
5.
Plug the raw water and pure water quick connects (12, 13) back on the ion exchanger (11).
Do not mix up the the quick connectors! Make sure that they audibly click into posi-
tion!
6.
Switch the system back on again at the operating unit (5).
7.
Vent the ion exchanger (see the "Venting the ion exchanger" section).
8.
Check that the quick connects do not leak.
9.
Replace the front cover (6) on the storage tank.
10. The system is now ready to use.
Thermo Scientific Barnstead LabTower AFT
Pure water system
41
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