en
Installation and operating instructions • Wilo-Rexa MINI3-V05...-AU • Ed.01/2022-01
9
NOTICE
Pump starts or is ready for operation!
If the plug is connected to the socket, the pump
starts immediately or is ready for operation:
• Pump
without float switch
: pump starts on im-
mediately!
• Pump
with float switch
: pump is ready for oper-
ation. The pump starts depending on the fill
level!
▶
We recommend switching on and off the
socket using a separate main switch!
6.2
Connection: Pump without plug
DANGER
Danger to life due to electrical shock!
Improper conduct when carrying out electrical work
can lead to danger to life due to electric shock!
• Carry out electrical work by a qualified electri-
cian.
• Observe local regulations.
CAUTION
Irreparable damage as a result of water pen-
etration!
If the connection cable is without plug or with bare
cable ends, there is a risk of damage due to water
ingress. Water ingress destroys both, the connection
cable and the pump. Never immerse the cable end in
fluid. Firmly seal the cable end during storage.
Connect the pump permanently to a switchgear. Observe the fol-
lowing points:
•
Earth the device properly!
•
Provide a motor protection switch!
The minimum requirement is a thermal relay/motor protection
switch with temperature compensation, differential trip and re-
activation lock according to local regulations.
•
Install a mains disconnection device!
Minimum requirement: Main switch with all-pole disconnection.
Pump with single-phase AC motor
To connect the pump to the switchgear, cut off the plug. Connect
the pump to a switchgear as follows:
Wire colour
Terminal in switchgear
Brown (bn)
Live wire (phase conductor)
Blue (bl)
Neutral wire (neutral con-
ductor)
Green/yellow (gn-ye)
Earth wire (protective earth
conductor)
The wire colours have been changed. Note the following colour
mapping:
•
The blue wire replacing the old black wire.
•
The brown wire replacing the old red wire.
Setup motor protection
Set the motor protection switch to the rated current (see rating
plate).
7
Commissioning
DANGER
Danger to live due to electrical shock in ac-
cessible basins!
Do not operate the pump if there are persons in
contact with the fluid. If a fault occurs, be danger to
live due to electric shock! Only start the pump when
there are no persons in contact with the fluid.
NOTICE
Check inlet quantity!
The maximum inflow must be smaller than the
maximum delivery rate of the pump. If the inflow
rate is higher, the pump cannot pump out the fluid
complete. The pit can overflow!
7.1
Before switch on the pump
Check the following before starting the pump:
•
Is the electrical connection carry out in accordance with regula-
tions?
•
Is the connection cable lay safely?
•
Can the float switch move freely?
•
Temperature of the pumped fluid observed?
•
Immersion depth observed?
•
Are the pressure pipe and pump sump free of deposits?
•
All gate valves in the pressure pipe open?
7.2
Switching on and off
The pump switch on and off depending on the version:
•
Pump
with
plug,
without
float switch
The pump switch on immediately after inserting the plug into
the socket. To switch off the pump, pull the plug.
•
Pump
with
plug
and
float switch
The pump switch on and off automatically on reaching the
switching level:
–
Float up: Pump on.
–
Float down: Pump off.
•
Pump
without plug
The control panel switch the pump on and off. Read the install-
ation and operating instructions for the control panel for further
details.
7.3
Test run
If the pump is installed stationary (for example, cesspool, overflow
shaft), carry out a test run. Check the basic conditions (inflow
quantity, switching points) with the test run. The test run must in-
clude three pump cycles.
1.
Flood the pit: Open inlet.
NOTICE! The required inflow quantity for the test run can be
simulating using another water source.
2.
Switch on level is reached: pump starts.
