Wilo CronoLine-IL-E Notice De Montage Et De Mise En Service page 121

8.7 Making the electrical connection
9 Protective devices
10 Commissioning
Installation and operating instructions • Wilo-CronoLine-IL-E, Wilo-CronoTwin-DL-E, Wilo-CronoBloc-BL-E • Ed.01/2024-02
NOTICE
Guide the electrical connection for the differential pressure sensor
through the smallest threaded cable gland (M12) on the electronic mod-
ule.
For a two-pump or Y-pipe installation, connect the differential pressure
sensor to the main pump. The measuring points of the differential pres-
sure sensor must be arranged in the collector pipe on the suction and
discharge side of the two-pump system.
• Make the connections in accordance with the terminal allocation.
• Earth the pump/installation as per regulations.
• Reinstall any uninstalled safety devices, e.g. module cover!
WARNING
Risk of burns from hot surfaces!
Pump housing and lantern can get hot during operation and cause burns
when touched.
• Provide an appropriate guard.
• Allow the pump to cool down before commencing any work.
• Depending on the application, insulate the pump housing.
• Observe local regulations.
DANGER
Danger of death due to lack of protective devices!
Due to missing protective devices of the electronic module or in the
range of the coupling/motor, electric shock or contact with rotating parts
can lead to life-threatening injuries.
• Before commissioning, protection devices such as electronic module
covers or coupling covers that were removed must be reinstalled!
• Always wear protective clothing, safety gloves and safety glasses
when working!
• An authorised technician must check the functionality of the safety
devices on the pump, motor and electronic module prior to commis-
sioning!
• Never connect the pump without the electronic module!
CAUTION
Risk of material damage due to unsuitable operating mode!
Operating outside of the duty point impairs the pump efficiency and can
damage the pump. Operating with the shut-off devices closed for more
than 5 minutes is not recommended and generally dangerous in the case
of hot fluids.
• The pump must not be operated outside of the specified operating
range.
• Do not operate the pump with the shut-off devices closed.
• Make sure that the NPSHA value is always higher than the
NPSHR value.
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