ProMinent Sigma 3 Basic Operating Instructions Manual page 42

Installation, electrical
External fan
Variable speed motors with frequency
converter
Stroke length actuators / control power
ends
42
CAUTION!
Pump can be damaged
The pump can be damaged if the motor drives the pump
in the wrong direction.
– When connecting the motor, pay attention to the cor‐
rect direction of rotation indicated by the arrow on
the fan cover, as shown in Fig. 19.
Use an electrical isolating device in the mains supply
cable, such as a mains switch, to switch off the pump
independently of the entire installation (e.g. for repairs).
1. Install a motor protection switch, as the motors have no fuse.
2. Install an emergency cut-off switch or include the motor in the sys‐
tem's emergency cut-off management scheme.
3. Only connect the motor to the power supply using a suitable cable.
– Key motor data can be found on the nameplate and
in the "Technical data" chapter.
The terminal wiring diagram is located in the ter‐
–
minal box.
Motor data sheets, special motors, special motor
flanges, external fan, temperature monitoring
For further information on the motor with identity
–
code specification "S", refer to our website
www.prominent.com. Motor data sheets can be
requested for all other motors.
– With motors other than those with identity code
specifications "S", "M" or "N": Pay special attention
to the operating instructions for the motors.
Special motors or special motor flanges are avail‐
–
able on request.
CAUTION!
Provide a separate power supply for the external fan for
motors with external fans (identity code specification "R"
or "Z").
Connect the motor as per the wiring diagram for the controller, if it is con‐
trolled by an electronic control unit (such as direct current motors by a fre‐
quency converter).
Connect the motors in accordance with the enclosed wiring diagram or as
per the wiring diagram fixed to the inside of the housing.