WARNING!
ATEX pumps in areas at risk from explosion
– Use a suitable motor protection switch to pro‐
tect power end motors. Use motor protection
approved for this application with Ex"e" motors.
(Protection against warming caused by over‐
loading)
– Provide a time-delay residual current device.
– Observe the enclosed operating instructions for
the Ex motor, especially the maintenance plan.
WARNING!
Only motors with a frequency converter: Danger of
electric shock
There remains a risk of an electric shock for 3
minutes after the mains voltage has been switched
off on conducting parts of the motor with an inte‐
grated frequency converter and on the lines them‐
selves.
– After switching off, allow the device to stand for
3 minutes before opening the terminal box.
CAUTION!
The motor can be damaged
Provide appropriate motor protection devices (e.g.
motor protection switch with thermal overcurrent
trip) to protect the motor from overloading.
Fuses do not provide motor protection.
CAUTION!
Only motors with a frequency converter: The motor
can be damaged
The input current limiter could be damaged if a
motor with an integrated frequency converter is
restarted within 3 minutes of the mains voltage
being switched off.
– After switching off, allow the device to stand for
at least 3 minutes before restarting.
– If the motor is controlled via a control, take this
into consideration at the control.
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 correct direction of rotation indicated by the
arrow on the fan cover, as shown in Fig. 13.
Motor
P_SI_0012_SW
Fig. 13: Direction of rotation of motor
Installation
41
