T
www.ungerglobal.com
1
6
8
5
2
3
4
2
3
4
1
7
9
18
HydroPower® RO XXL
Service
6. SERVICE
6.2.4. Changing osmosis membrane (RO)
Determine experimentally if the osmosis membrane, rather then the DI, need to be
changed when the TDS value is reached. If the water flow rate significantly
decreases, you have to replace the membrane.
To change the osmosis membrane you have to drain the water from the osmosis
system. Make sure the system is pressureless before exchanging the membrane!
You can change the membrane only at the side like indicated on the picture left,
loosen the bolts and uncouple/unscrew the piping. Remove the membrane by pulling out.
Place a new membrane, connect piping and lock the membrane housing.
Note
: be aware, the water flow rate also decreases at lower temperatures!
Avoid any abrupt pressure or cross-flow variations on the spiral elements during maintenance or other
sequences to prevent possible membrane damage.
6.2.5. Adding membrane preservative fluid
When the system, e.g. in winter, is stored unused for long periods of time, there is a risk of blockage of the
membrane and thus damage to the filter and no good filter results. For this reason, a special care agent
must be filled in order to avoid this blocking.
1. Disconnect the water supply if connected.
2.
Connect the concentrate hose so that excess water can drain.
3.
Disconnect the exit hose from the pre-filter case.
4.
Put the hose into the bottle of the maintenance fluid.
5.
Place the bottle securely.
6. Start the pump.
7. The bottle is now quickly sucked empty.
8. As soon as the bottle is empty, stop the system .
9. Re-connect the hose to the pre-filter case.
Restarting the system
1. Disconnect the concentrate and the hose from the bottom of the
DI filter.
2. Lead the hoses into a bucket.
3. Connect the tab water line. Start the Pump at the control box.
Press the
buttons until you read FIL in the display.
The pump flushes the membrane.
4. Now the water is flushed into the bucket. Let it run for at least
30 minutes to asure that no maintenance fluid is in the system.
Reconnect the hose to the system like in picture 1.
Correct storage in winter:
Protect from frost. Remove as much water as possible. Empty the tank (front valve at bottom side, tend the trailer a
bit). Drain and remove prefilter. Drain hose reels and possibly blow out with compressed air.
Drain DI filter and store resin bags in an airtight bucket. Dry all wet surfaces with a cloth.
Disconnect the battery for safety.