6 | Electrical Connection
22 | 52 Instruction Manual COBRA NC 2500 B WCV_EN_en
NOTICE
Incorrect direction of rotation.
Risk of damage to the machine!
● Operation in the wrong direction of rotation can destroy the machine in a short time! Prior to
start-up, ensure that the machine is operated in the right direction.
The intended rotation direction of the motor is defined by the illustration below:
● Jog the motor briefly.
● Watch the fan wheel of the motor and determine the direction of rotation just before the fan
wheel stops.
If the rotation of the motor must be changed:
● Switch any two of the motor phase wires.
6.3 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.
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