Electrical Connection - PYD Electrobombas SUB Serie Manual De Instalación Y Mantenimiento

INSTALLATION AND MAINTENANCE MANUAL
SUBMERSIBLE PUMPS

4. ELECTRICAL CONNECTION

Electrical connection must only be carried out by a qualified electrician in accordance
with local regulations. Follow all safety standards.
The unit must always be earthed, also with a non-metallic supply pipe.
CAUTION: In the case of water containing chloride (or salt water), the earthing conductor is
also useful to reduce the risk of galvanic corrosion due to electrolytic action, especially with the
non-metallic supply pipe and the safety cable.
Make sure that the mains frequency and mains voltage match the data on the rating plate.
For use in swimming pools (not when people are in the pool), garden ponds and similar places, a
residual current device with IAN not exceeding 30 mA must be installed in the supply circuit.
Install a mains disconnection device (circuit breaker) with a contact separation of at least 3 mm at
all poles.
When the water level is not under direct visible control, install a float switch or electrodes to pro-
tect the pump against dry running and to stop the water levels and start the pump automatically.
When extension cables are used, ensure that the cable wires are adequately sized to avoid voltage
drops. For connection of cables in a well, use heat-shrinkable sheaths or other methods for sub-
merged cables.
3.1. Single Phase Pumps
Supplied with built-in thermal protector. The motor will stop if overheating is detected. When the
windings cool down (after 2 to 4 minutes), the thermal protector allows restarting.
The control box with the starting capacitor is included in the scope of supply.
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