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4. Secure the pressure hose to the hose connection
using the hose clip.
5. Position the pump at the installation site.
CAUTION! Use a hard surface or underlay at the
installation site to prevent sinking on soft sub-
strate.
6. Lay the pressure hose and fasten it in the appropri-
ate place (e.g. drainage). CAUTION! If the pump is
placed in a full chamber, hold the pump at a slight
angle when immersing. This causes the air to es-
cape from the pump!
7. Route the connection cable to the socket/power
supply.
▶ Pump is installed.
5.3
Electrical connection
ƒ
Mains connection with correctly installed protective
earth conductor.
ƒ
Residual-current device (RCD) is installed with 30 mA.
ƒ
Mains connection fuse protection: max. 16 A.
ƒ
Voltage (U) and frequency (f) data on the rating plate
correspond to the data of the mains connection.
Do not connect the pump if:
ƒ
The connection cable is damaged
Have the connection cable replaced by a qualified elec-
trician or the customer service.
ƒ
A standalone inverter is in use
Stand-alone inverters are used in autonomous power
supplies, e.g. solar power supply, and can generate over-
voltages. Overvoltages can destroy the pump.
ƒ
A multiple plug socket or power strip is in use
ƒ
An energy-saving plug is in use
This reduces the energy supply to the pump and the
pump may heat up too much.
5.3.1 Connection: Pump with plug
Provide a socket outlet with earthing contact. To connect
the pump, insert the plug into the socket.
Installation and operating instructions Wilo-Rexa MINI3
Installation and electrical connection
NOTICE
Pump starts up or is ready for operation!
Once the plug is connected to the socket, the
pump will either start immediately or be ready
for operation:
• Pump without float switch: pump
switches on immediately!
• Pump with float switch: pump is ready for
operation and will switch on depending on
the fill level!
▶ We recommend switching the socket
on and off using a separate main
switch!
5.3.2 Connection: Pump without a plug
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical
work can lead to death due to electric shock!
Electrical work must be carried out by a quali-
fied electrician in accordance with the locally
applicable regulations.
CAUTION
Irreparable damage as a result of water
penetration
Connection cables without plugs feature bare
cable ends. Water may penetrate the connec-
tion cable and pump via these bare cable ends.
This will destroy both the connection cable
and the pump. Never immerse the bare end of
the connection cable in fluid. Firmly seal it
during storage.
The pump has a connection cable with bare cable end. The
pump must be permanently connected to a switchgear.
Observe the following points:
ƒ
Earth the device properly!
ƒ
Provide a motor protection switch!
The minimum requirement is a thermal relay/motor pro-
tection switch with temperature compensation, differ-
ential trip and reactivation lock according to local regu-
lations.
ƒ
Install the mains disconnection device!
Minimum requirement: Main switch with all-pole discon-
nection.
en
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