9.2.3 Cleaning with Cleaning Solution by Filling the UV System
NOTICE!
Handling the cleaning solution
– It is also recommended with reactors, which
are regularly cleaned by filling them with a
cleaning solution, that the water drain con‐
nector and the vent screw are replaced by
appropriate valves.
– With larger reactors, it is recommended that
they are filled through the water drain opening
using an appropriate acid-resistant pump.
– If the reactor is filled with a pump, it is also
useful to circulate the cleaning solution through
the vent opening.
– This shortens the cleaning time and ach‐
ieves a better result.
– If the cleaning solution is collected and stored
in a suitable storage tank, it can be reused sev‐
eral times.
1.
Switch off the UV system.
2.
Switch off the master switch or disconnect it from the mains
power supply.
3.
Close the shut-off valves upstream and downstream of the
radiation chamber.
4.
Drain the reactor.
5.
Screw in the water drain screw again and tighten using min‐
imal force.
6.
Fill the reactor with the cleaning solution through the vent
opening.
ð
Allow the cleaning solution to work for at least 20
minutes.
7.
Open and remove the water drain screw.
8.
Empty the reactor and dispose of the cleaning solution in
accordance with the applicable regulations.
9.
Flush the reactor thoroughly with clean water until all residue
of cleaning solution has been removed.
10. Screw in the water drain screw and tighten using minimal
force.
11. Slowly open the shut-off valve upstream of the reactor.
12. Fill the reactor until water emerges from the vent screw.
13. Close the air vent screw and tighten it using minimal force.
14. Open the shut-off valve downstream of the reactor, which is
only necessary with a manual shut-off valve.
ð
Check the reactor for leaks.
15. Switch on the master switch or connect to the mains power
supply.
ð
The UV system is ready for operation again.
Cleaning the lamp protection tubes by
filling the reactor with a cleaning solu‐
tion:
Maintenance
67
