Operating instructions for Pool control-40.net filter control unit
Page: 12 (34)
In normal mode, the water
level fluctuates between the
"CLOSE solenoid valve" and
"OPEN
solenoid
valve"
probes.
The height differences depend
on
the
individual
circumstances, but must be
no less than 5 cm to ensure
sufficient switching intervals.
How level control works for balancing tanks
Level control for balancing tanks performs the following functions:
a. Controlling the water level.
When water is lost from the swimming pool, e.g. through evaporation or backwashing, causing the
water level to drop to below the "OPEN solenoid valve" probe (terminal 37), the solenoid valve
(terminal U9) opens and the inflowing fresh water causes the water level to rise. As soon as the rising
water level reaches the position of the "CLOSE solenoid valve" probe (terminal 38) and touches this
probe, the solenoid valve closes the supply of fresh water.
b. Protecting the filter pump against dry-running.
When water is lost from the swimming pool, e.g. from backwashing, causing the water level to drop to
below the "Dry-running protection / pump OFF" probe (terminal 36), the level control system switches
off the filter pump to prevent it being damaged by running without water. As soon as the water level
has returned to the height of the "Dry-running protection / pump ON" probe (terminal 37) and touches
this probe, the level control system automatically switches the filter pump back on.
c. Automatic actuation.
If water displacement in the swimming pool has increased the water level in the balancing tank so that
it touches the "automatic actuation ON" probe (terminal 39), the level control system automatically
switches on the filter pump. The water is then pumped back into the pool, avoiding unnecessary loss
of precious water. The "automatic actuation ON" probe must be placed a few cm lower than the
overspill.
Pools with skimmer
POOLcontrol-40.net
35
36
37
38
39
float switch
An
mini float switch must be used as the sensor for skimmer pools.
The float switch lead can be extended with a cable (2x0.75mm²) of up to
30m in length. Please note that the connection must be absolutely
watertight. The float-switch connecting cable must not be laid alongside
other current-carrying cables.
The mini float switch operates with safety extra low voltage (SELV).
In this operating mode a time delay is automatically enabled in
conjunction with the mini float switch. This adjustable time delay
prevents over-frequent switching as a result of waves moving the pool
water. The delay length can be adjusted in the configuration menu.
earth
Dry-running protection: pump OFF
dual function:
pump ON
OPEN solenoid valve
dual function:
CLOSE solenoid valve
Automatic actuation OFF
Automatic actuation ON
Functions of the different level sensing probes
