Wilo PE-350EA, Owner'S Manual

Page: 7 / 16

7
INSTALLATION
Only a qualified electrician should connect cables. Install a circuit breaker and connect
earth wire to prevent any electrical accidents including electric shock.
- The wiring of major parts including the motor and the pressure sensor is already finished. Wiring of earth
and other optional parts should be conducted according to the wiring diagram.
- The power supply should be in accordance with the rated value marked on the nameplate.
- Before supplying power, check the following:
①
if the circuit breaker at power is suitable (under 30mA of rated sensitivity).
②
if the wiring is correct (connection and wire size).
③
If the connections with motor terminal are tightened (No operation with missing phase).
Wiring
●
When the pump remains inactive for a long time at temperatures lower than 0°C, the pump body must
be completely empty through the drain valve to prevent possible cracking of the hydraulic components.
●
Bury the horizontal piping at least 30cm under ground.
CAUTION!
To prevent a fire, don’t cover the motor or pump with a blanket.
In winter, install protections against cold weather.
summer / not humid winter
lagging
ground
wooden plate
Cover the exposed piping.
waterway
over 30cm
waterway waterway
CAUTION!
ATTENTION!
●
At first running, if you notice abnormal vibration, noise, or strange smell, turn off and disconnect the pump
from its source and contact the dealer or service center. Continuous operating in this case may cause fire or
electric shock.
●
Don’t ever disassemble or alter the product.
-Fire, electric shock, or physical injury may occur.
-The pump must not be dismantled and repaired except by qualified skilled personnel.
- Contact our service center or dealer to have the pump repaired.
●
When the power cord is broken, the replacement should be carried out by our dealer or other qualified personnel.
●
After assembled, the pump should be put to test running.
Incorrect assembly may cause malfunction, electric leakage, or water leakage.
WARNING!
CAUTION!