5.2 Backwashing with 5-way valve
WARNING!
Possible consequence: Fatal or very serious inju‐
ries.
Cause: With a 230 V power supply to the Dulco‐
marin
®
II, 230 V exists at the terminals
[P2] ... P5
after switching on of the relay.
Measure: Disconnect the system before carrying
out any work on the power supply. By taking suit‐
able measures, ensure that there is no danger for
the entire system arising from the mains voltage at
the terminals
[P2] ... P5.
The times for the circulation must be set with the
[F4] > [CONFIG]
>
[F2] > [OPTION] > [TIMER] . If no times are set, then the circula‐
tion will not run automatically.
To permit automatic backwashing, the 5-way valve (rod valve) (line
1) must be connected to terminal
[P2] or [P4] of the F module and
230 V then connected. If you are operating two lines in parallel, the
second 5-way valve must be connected to terminal
[P3] or [P5] of
the F module.
Once you have electrically connected the 5-way valve, then
set the function of the terminals
[P2] ... P5 in the
[Configuration] operating menu of the Dulcomarin
®
II.
ð
You can freely select these functions. A free allocation of
all functions to each relay is not universally possible.
Please observe our allocation suggestion in the appendix
of the operating instructions. In the appendix, you can
find a series of the most appropriate application solu‐
tions.
5.3 Hydraulic procedure
5.3.1 First filtrate
So that after backwashing no dirt or contamination can reach the
swimming pool, once the filter bed of the filter returns to the normal
condition, the first filtrate must be disposed of. The first filtrate
valve is activated for a duration of 20 seconds after backwashing.
Use of a 3-way rod valve with water or compressed air as its
working energy is recommended. Terminal allocations can be
made for both first filtrate valves (lines 1 and 2) at the terminals
[P2] ... [P7].
5.3.2 Internal circuit
If a swimming pool roll cover is fitted and a contact is made to the
digital input
[K1] ... [K5] and activated, then the Dulcomarin
®
II
switches a valve via the terminals
[P2] ... [P7] if the roll cover
closes. Consequently either the level in the swimming pool can be
reduced and/or an inlet nozzle can be used as a suction line. This
ensures internal mixing of the water, without significant evaporation
and an open swimming pool.
Dispose of the first filtrate in the drain
Application examples for the F module functions
19