English
Installation and operating instructions Wilo-Control ESK1, PSK1 15
8.2.2 Check direction of rotation
(3-phase motor only)
Keep three-way switch (Fig. 1, item 5) at the posi-
tion 'MANU' (the 'Mains voltage' signal lamp lights
up). When there is a signal (float switch, electrode,
etc.), the pump starts.
For direction-of-rotation control, follow the
instructions for commissioning the pump.
If the direction of rotation is incorrect:
• Switch off the plant
• Switch two phases in the switchgear.
8.3 Selecting the operating mode
Depending on the application, an operating mode
must be set.
8.3.1 Installation with two electrodes (Fig. 4a)
• Select low-water protection (Fig. 2, item 11)
• Configure the sensitivity of the electrodes
Before the pump is started, set the water conduc-
tivity potentiometer (Fig. 2, item 7) to the mini-
mum value.
Make sure that the electrodes are immersed and
the three-way switch (Fig. 1, item 5) is set to posi-
tion 'AUTO'. Slowly turn the potentiometer (Fig. 2,
item 7) clockwise until the pump starts.
• Applying the electrodes
(see the pump operating instructions)
NOTE:
The lower electrode reports low water. The upper
electrode must be immersed in order to reset this
error.
8.3.2 Installation with one electrode (Fig. 4b)
CAUTION! Risk of malfunctions!
Select low-water protection (Fig. 2, item 11)!
• Configure the sensitivity of the electrode
Before the pump is started, set the water hardness
potentiometer (Fig. 2, item 7) to the minimum
value.
Make sure that the electrodes are immersed and
the three-way switch (Fig. 1, item 5) is set to posi-
tion 'AUTO'. Slowly turn the potentiometer (Fig. 2,
item 7) clockwise until the yellow signal lamp
(Fig. 1, item 2) starts to flash.
• Set the time delay before restarting
After stopping due to low water, the pump will
start with a delay (1 to 30 minutes).
The delay is preset in the potentiometer (Fig. 2,
item 8).
During the waiting period, the yellow signal lamp
flashes (Fig. 1, item 2).
• Applying the electrode
(see the pump operating instructions)
8.3.3 Installation with flow meter (Fig. 4c)
CAUTION! Risk of malfunctions!
Set water hardness potentiometer to its maxi-
mum value (Fig. 2, item 7)!
• Select low-water protection (Fig. 2, item 11).
• Set the time delay before restarting
After stopping due to low flow rates, the pump will
start with a delay (1 to 30 minutes). This delay
allows for sufficient filling of the water tank
before a restart.
The delay is preset in the potentiometer (Fig. 2,
item 8).
During the waiting period, the yellow signal lamp
flashes (Fig. 1, item 2).
• Configure the time delay before a restart (Fig. 2,
item 9)
To provide the flow meter with enough time to
record a sufficient flow rate, a minimum period
operating time (5 seconds to 3 minutes) is config-
ured for the pump. If the flow meter has not been
activated after this time has elapsed, the pump
will stop.
• Activating the time delay functions
(Fig. 2, item 12)
“AUT” position:
Both delays are active
“MAN” position:
The restart is triggered by pressing the 'Reset'
button (Fig. 1, item 6).
CAUTION! Risk of malfunctions!
Make sure that the bridge between terminals 5 + 6
on the terminal strip (Fig. 2, item 4) is correctly
positioned.
8.3.4 Pumping operation
CAUTION! Risk of malfunctions!
Set water conductivity potentiometer to its
maximum value (Fig. 2, item 7)!
Operation with one float switch (Fig. 4d)
• Select low-water protection (Fig. 2, item 11).
In this position, the float switch is connected to
terminals 5 + 6 of the terminal strip (Fig. 2, item 4).
• Connect a protection switch (as dry running pro-
tection) to terminals 1 + 3 of the terminal strip.
• Set the time delay before restarting
After stopping due to low water, the pump will
start with a delay (1 to 30 minutes).
The delay is preset in the potentiometer (Fig. 2,
item 8).
During the waiting period, the yellow signal lamp
flashes (Fig. 1, item 2).
