Connection To The Electric System; Adjustment; Machine Motor Coupling Adjustment - STA-RITE vx Manual Del Producto

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 ∆ = 30 mA (DIN VDE 0100T739).
Danger Before removing the terminal box cover and
before making any operation on the motor-
pump, 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
- 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
- Connect the power supply by means of the cut-off switch
- Give a current pulse to the machine
- Check the motor rotation direction
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 op-
erations:
-- 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
Machine with single-phase motors
Carry out the following operations to connect the machine to the
power supply system:
- Make sure that the motor is fit for the voltage mains
- Cut-off the electric system by means of the cut-off switch
- Unscrew the screws of the terminal box
- Fit the power supply cable in the fairlead
- Connect the lines and the ground
- Refit the terminal box cover 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 rotation direction
A- If the rotation direction matches the rotation direction shown
by the arrows on the machine head, the connections are cor-
rect
B- If the rotation direction is the opposite to the one shown by
the arrows on the machine head, carry out the following op-
erations:
-- Cut-off the electric system by means of the cut-off switch
-- Unscrew the screws fastening the terminal box cover
-- Using a jumper, temporarily short-circuit the condenser
terminals
-- Change the jumper positions
-- Remove the jumper
-- Refit the terminal box cover with the gasket
-- Tighten the screws of the terminal box cover

3.7 Adjustment

3.7.1 Machine motor coupling adjustment

Carry out the following operations to adjust the machine-motor
coupling:
- Cut-off the power supply system by means of the cut-off switch
- Unscrew the screws fastening the joint protection
- Remove the joint protection
- Manually rotate the joint
- Check that the joint freely rotates
A- If it freely rotates, carry out the following operations:
-- Refit in place the joint protection
-- Tighten the screws securing the joint protection
B- If the joint does not rotate easily, carry out the following
operations:
-- Loosen the socket-head screws joining the two half-joints
-- Adjust the distance between motor and impeller centres
using a screwdriver as a lever
-- Tighten the socket-head screws joining the two half joints
-- Refit the joint protection
-- Tighten the screws fastening the joint protection