5 | Installation
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Instruction Manual COBRA NC 2500 B WCV_EN_en
5.7 Electrical Connection of the Cooling Liquid
Pump
DANGER
Live wires.
Risk of electrical shock.
• Electrical installation work must only be executed by qualified personnel.
• Provide an overload protection according to EN 60204-1 for the pump.
• Electrically connect the cooling liquid pump.
• Make sure that the cooling liquid pump is connected such that is running when the
machine is started.
5.7.1 Wiring Diagram Cooling Liquid Pump
230/400 VAC cooling liquid pump version:
Delta connection (low voltage):
Star connection (high voltage):
• Make sure that the cooling liquid flows in the right direction according to the follow-
ing illustration.
Rotation direction
of the motor
Cooling liquid flow
direction
If the rotation of the motor must be changed:
• Switch any two of the motor phase wires.
