Thermo Scientific LabTower AFT 20 Operating Instructions Manual page 20

1. Place the pure water system on the table of the storage tank. Connect the hoses positioned
at the table by putting the connectors in with the appropriate connections (21-25) at the
equipment (see „Views and connectors ", side view).
2. Remove the covering hood (2) of the storage tank.
3. Turn the filter housing of the pre-treatment (16) loosely. Insert the pre-treatment unit con-
tained when assembling (pre-filter + hardness stabilization) into the filterhousing and screw
this again firmly (see chapter „Change of the pre-treatment ").
4. In the case of use of the optional sterile or fine filter you turn the filter housing (17) loosely.
Insert the filter into the filter housing and bolt this on again.
5. Connect the Ø8 – ¾" female thread feedwater hose supplied with feedwater inlet (7) of the
storage tanks and a water tap that can be turned off. The connecting hose is marked with
„Rawwater".
6. Connect Ø8 concentrate hose supplied with concentrate outlet (8) of the storage tank and
to the drain provided on-site. The concentrate hose is marked with „Concentrate".The drain
to the stewer must be max. Are 1 m above the rinsing water connector of the unit.
Caution! Concentrate must be able to flow under free gravity fall to the drain!
7. Place the ion exchanger (13) into the hollow of the storage tank.
8. Press the quick-connector of the raw water hose (14) on connection of your ion exchanger,
marked with „Rawwater".
9. Press now the quick-connector of the pure water hose (15) on connection ( of your ion ex
changer marked with „Purewater".
The quick-connector must engage audibly.
Do not get the raw water and pure water hoses mixed up!
10. Plug the 4-pin plug of the level control system (storage tank), marked with „Niveau", in the
4-pin socket (20) of the pure water systems and screw the milled nut of the plug.
11. Screw the sterile filter capsule (4) into the withdrawal tap G1/4 ".
12. Now fit the hose of the Ø8 mm sterile overflow in the overflow on the back of the tank and
connect it with the drain.
13. Ensure that residual water drainage (12) is turned closed.
14. Check the feedwater pressure; it must be within the permissible pressure range
(see chapter „Technical specifications").
15. Open the feedwater tap.
16. Plug the line plug in.
Before you now switch the system on, read through the rinsing out
procedure for reverse osmosis membranes packed with preserving
agent in the „Rinsing the membrane" section!
20
Thermo Scientific Barnstead LabTower AFT
Pure water system
tight.