Unger RO60S - Manual (Page 26)

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Function overview
7. Preservation
The reverse osmosis system supplied must not be shut down for more than 7
days, i.e. the raw water supply must not be interrupted for more than 7 days,
or the system must be operated at least every 7 days. If the system is shut
down for more than 7 days, it must be preserved. For this purpose, we have
designed a preservation kit for mobile osmosis specifically for this system.
This must be requested from the authorised dealer when required.
1. Before you perform the following steps, the resin filter must be
bridged without fail, since it will be damaged by the preserving agent.
To do this, unscrew the two hoses and connect them with the double
thread element, with which they were also connected when delivered.
2. Unscrew the filter cup in the pre-filter group and remove the filter
element. Insert the feed pipe supplied in the black filter
attachment from below.The end with the transverse hole must be
at the bottom.
3. Next, fill the supplied preserving agent into the filter cup and firmly
attach it again.
4. Connect the system to the water supply only. (No power!)
5.
Permeate outlet and concentrate outlet must remain open;
it is recommended that you place a collecting container with a volume
of approx. 2-3l under the outlets.
6. Make sure that the system is switched off.
7. Open the water inlet valve and allow the inflowing water to flow
freely through the system, without starting operation of the system.
8. The preserving agent is now flowing through the system due to the
water inlet pressure.
9. As soon as the preserving fluid runs out from the concentrate outlet
at the rear, close the water inlet valve.
10. The system has now been preserved. After preservation, the ingress of
air into the system must be prevented by closing all valves (2) & (9).
11. It is recommended to change the preservation fluid once a month
to keep its effect.
12. Make sure that the water inlet valve does not remain open too long.
There is a risk that the entire preservative washed out completely in the
drain and is lost.