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12 Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09
A forced switch-off of all pumps always takes place in the event of an alarm, irrespective
of the selected signal transmitter!
The signal transmitters must be installed according to the system's installation plan. Please
observe the following points:
• Float switch: Float switches must be able to move freely in the operating space (pump
chamber, tank)!
• Dynamic pressure bell: Install a bubbling-through system to optimally vent the dynamic
pressure bell.
The following applies to the “fill” operating mode:
• Implement dry-running protection in all cases via the “Extern OFF” input!
• Install the signal transmitter in the supplying tank (e.g. well).
6.4.5 Water shortage (for “fill” operating
mode only)
The level can be measured via the following signal transmitters:
• Level sensor
Set the switching point in the menu.
• Dynamic pressure bell
Only “IPS” version! Set the switching point in the menu.
• Separate float switch
• Separate electrode
– Only Control EC-L1... and EC-L2...
– Hardware version 2 or higher
A forced switch-on of all pumps always takes place in the event of an alarm, irrespective of
the selected signal transmitter!
The signal transmitters must be installed according to the system's installation plan. Please
observe the following points:
• Float switch: Float switches must be able to move freely in the operating space (pump
chamber, tank)!
• Dynamic pressure bell: Install a bubbling-through system to optimally vent the dynamic
pressure bell.
6.4.6 High water alarm
The level can be measured via the following signal transmitters:
• Level sensor
Set the switching point in the menu.
• Dynamic pressure bell
Only “IPS” version! Set the switching point in the menu.
• Separate float switch
• Separate electrode
– Only Control EC-L1... and EC-L2...
– Hardware version 2 or higher
The signal transmitters must be installed according to the system's installation plan. Please
observe the following points:
• Float switch: Float switches must be able to move freely in the operating space (pump
chamber, tank)!
• Dynamic pressure bell: Install a bubbling-through system to optimally vent the dynamic
pressure bell.
What to do in the event of an alarm
• Operating mode “drain”: A forced switch-on of all pumps always takes place in the
event of an alarm, irrespective of the selected signal transmitter!
• Operating mode “fill”: A forced switch-off of all pumps always takes place in the event
of an alarm, irrespective of the selected signal transmitter!
The pumps must be activated for the forced switch-on:
• Menu 3.01: Pumps are enabled.
• Extern OFF: Function is inactive.
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