Ventilation, rinsing When the softener has been set up and the control has been programmed, the system must be carefully ventilated and rinsed. Before this is done, it must be checked that all lines and equipment upstream of the softener has been thoroughly rinsed. To rinse the softener, the outlet of the softener must be dismounted and discarded to the drain. The brine tank should remain empty until rinsing and ventilation are finished. The water inlet valve must be opened slowly and only partly. Watch the removal of air until water exits. When using E300 / 400 softeners, the drain must now be closed or considerably restricted.
When water exits, the tank or the vessel is not actually completely ventilated. The air is actually completely removed with the
backwash.
Manual regeneration When water exists, the tank is thoroughly ventilated during the backwash phase C1 by the start of a regeneration. When all air has been removed, the remaining phases are all skipped after a short rinse by briefly and simultaneously pressing + . When the first tank has been ventilated, the second tank will also be thoroughly ventilated during the backwash phase C1 by the start of a regeneration. The remaining phases can be skipped after a short rinse.
After both tanks have been ventilated and if ventilation is complete, the water inlet valve can be fully opened. During rinsing, the dynamic pressure of the water supply should also be checked. If both tanks are sufficiently rinsed, i.e.they have been rinsed with 5 times the bed volume, the softener outlet can be re-mounted. The complete water pretreatment system must now be rinsed briefly and can then be connected to the reverse osmosis system.
Refill Phase C8 The brine tank must now be filled by starting a manual regeneration with Reg. and fast skipping of the phases (by simultaneously pressing + ) up to the Refill phase C8. It should now be checked if the programmed time for the refill phase is sufficient for refilling. (Caution: the required level applies to a brine tank filled at least up to the brine level with salt). It would be sensible to switch on the consumers to reach to lower operating pressure.
After the time required for the brine to develop, the first tank can be regenerated by restarting a manual regeneration. The draw-brine phase C2 and the slow-rinse phase (phase C3) must now be checked during their common time to ensure that all of the brine is drawn in and the residual brine is rinsed out again.
Fresenius Medical Care Service Manual SM-EN 1/03.11 9-15 Please note that, although the slow-rinse phase C3 has the same effect as the draw-brine phase C2, the system is already rinsed clear to avoid high concentrations of brine in the standby mode.
Especially for softeners E080(B) and E150(B) it must be ensured that any residual brine has been rinsed away at the end of C3. This can easily be verified by taking a taste sample on the drain. When the first regeneration is complete and the reverse osmosis
system to be supplied continues to run in the rinse mode when the second regeneration starts, correct switching to the tanks to be supplied and the programmed times can be checked.
Note
The programmed values must be documented in the start-up report.
9.4.4
Start-up procedure for E080(B),/ E150(B), E225-T, E300, E400
Preparation and ventilation
1. The softener has been set up and the control has been programmed using the programming table.
2. The brine tank has been correctly positioned, has been connected and filled with salt tablets.
The brine tank can then be filed with feed water up to the float cup to allow the brine in the tank to develop.
3. Caution:
The softener system must be carefully ventilated. Close the water supply.
Dismount the outlet tubing on the particle filter and direct it to the drain.
Slowly open the water supply.
(Important: Do not open completely!
Regeneration of the first tank
4. Start regeneration with the key [5 sec], the Standby tank 1 is ventilated during the Fast Rinse phase C5.
All other phases then are skipped with the key combination + [5 sec.].
5. Start regeneration with the key [5 sec], the Standby tank 2 is ventilated during the Fast Rinse phase C5.
All other phases then are skipped with the key combination + [5 sec.].
6. Rinsing of both softener tanks for approx. 10 minutes per tank. – Initiation of a manual regeneration with the key [5 sec], switches
to the other softener tank and this tank can now also be rinsed for 10 minutes.
– After rinsing, close the water supply and connect the tubing to the RO system.
– The water supply can then be fully opened.
7. Start regeneration with the key [5 sec], the Service tank will now be completely regenerated. No phases will be skipped and the times can be checked.
(Important: time for the brine to develop, approx 1–1.5 hours) Check that brine is drawn in during phase C2.
Fresenius Medical Care Service Manual SM-EN 1/03.11 9-17 Regeneration of the second tank
8. The first tank is now properly regenerated.
For a manual regeneration of the second tank, it is necessary to wait until the brine has developed.
(Important: time for the brine to develop approx. 1,5 hours) 9. Start regeneration with the key [5 sec], the Service tank will now
be completely regenerated.
No phase will be skipped. This permits a check of the times of the individual phases.
10. Check the water hardness at the softener outlet and thus the softener function.
11. If the water hardness is zero, start-up of the RO system can be started.
Note
Start another manual regeneration during the start-up. This causes the tanks to switch, and the second tank can be