Pentair VLR Serie Manual De Instrucciones página 38

GB
3.6.2 TERMINAL BOX POSITION
Carry out the following operations to direct the terminal box in the required position:
3.6.3 CONNECTION TO THE ELECTRIC SYSTEM
MACHINES wITH THREE-PHASE MOTORS
DANGER
The installer shall make sure that the power supply system is fitted with an efficient ground system according to the
provisions in force.
DANGER
Make sure that the power supply system is fitted with a high-sensitiveness differential switch
Δ= 30 mA (DIN VDE 0100T739).
DANGER
Before removing the terminal box cover and before making any operation on the motorpump, make sure that the power
supply line has been cut-off.
Carry out the following operations to connect the machine to the power supply system:
• Make sure that the motor is fit for the
mains voltage
• Cut-off the electric system by means
of the cut-off switch
• Unscrew the screws securing the
terminal box cover
• Fit the power supply cable in the
fairlead
A - If the rotation direction matches the one shown by the arrows on the machine head, the connections are correct.
B - If the rotation direction is the opposite to the one shown by the arrows on the machine head, carry out the following operations:
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• Remove the connection covering grids
• Unscrew the assembly bolts of motor
and machine body
• Rotate the motor of 90° or 180° or
270° (in relation to the initial position)
• Screw the bolts alternatively and in a
uniform way
• Refit the connection covering grids
• Connect the phases and the ground to
the terminals
• Refit the terminal box cover with the
gasket
• Tighten the screws securing the
terminal box cover
• Cut-off the electric system by means
of the cut-off switch
• Unscrew the screws fastening the
terminal box cover
• Change the connection of two phases
• Refit the terminal box with the gasket
• Tighten the screws of the terminal
box cover
• Connect the power supply by means
of the cut-off switch
• Give a current pulse to the machine
• Check the motor rotation direction