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Troubleshooting
Flushing with a lye
11. Neutralise the potable water circuit by fl ushing with
a lye.
12. Close the upper fi ll and drain ball valve.
13. Remove the fl ushing hoses.
The decalcifi cation fl ushing is complete.
Flushing the potable water circuit with potable
water
14. Close the draining hose for potable water at the
lower fi ll and drain ball valve.
15. Open the isolating ball valve for potable cold water
a little (position 9 in Illust. 1 on page 10).
The heat exchanger is fl ushed with potable water.
16. Wait at least a minute.
17. Close the fi ll and drain ball valve (position 17 in
Illust. 1 on page 10).
18. Remove the draining hose.
19. Refi t the caps of the fi ll and drain ball valves.
The decalcifi cation process of the potable water
circuit with installed heat exchanger is complete.
9.3.2
Cleaning of the heat exchanger (storage
cylinder circuit side)
A loss of performance may even be attributable to
impurities at the storage cylinder circuit side. As an
additional measure, the storage cylinder circuit should
always be fl ushed fi rst before considering a replace-
ment of the heat exchanger.
CAUTION
Risk of scalding due to hot fl uids!
If the station has been in operation, there is a
risk of scalding due to the unintentional dis-
charge of hot water or steam.
f Allow the system to cool down.
f Wear safety goggles.
CAUTION
Risk of burns due to hot components!
Any unprotected contact with hot components
may lead to burns.
f Wear safety gloves.
1. Completely disconnect the controller (all poles) from
the power supply.
2. Close the isolating ball valve for potable hot water
(position (7) in Illust. 1 on page 10).
3. Close the isolating ball valve for potable cold water
(position (9) in Illust. 1 on page 10).
4. Close the isolating ball valve for the storage cylinder
circuit return (position (16) in Illust. 1 on page 10).
40
5. Close the isolating ball valve for the storage cylinder
circuit supply (see position (18) in Illust. 1 on page
10).
6. Unscrew the caps of the fi ll and drain ball valves
(positions (6) and (19) in Illust. 1 on page 10).
7. Connect a fl ushing hose to each of the fi ll and drain
ball valves (positions (6) and (19) in Illust. 1 on page
10).
8. Open the ball valves slowly (positions (6) and (19)
in Illust. 1 on page 10) to initiate the fl ushing pro-
cess. Flush for at least 5 minutes.
9. Drain the fl uid and the fl ushed residue from the
fl ushing circuit.
10. Close the upper fi ll and drain ball valve (position (6)
in Illust. 1 on page 10).
11. Close the fi ll and drain ball valve (position 6 in Illust.
1 on page 10).
12. Remove the fl ushing hoses.
13. Refi t the caps of the fi ll and drain ball valves.
NOTICE
Risk of damage due to pressure surge!
Sudden fi lling of the station with water may
lead to damage, for instance to the sensors or
sealing points.
f Always open and close ball valves slowly.
14. Open the isolating ball valves (positions 7, 9, 16 and
18 in Illust. 1 on page 10).
15. Restore the power supply for the fresh water sta-
tion.
The fl ushing process is complete.
"Regumaq X-25"
138112581-V01.10.2019
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