Instruction manual V 2.3
12
PWM 230 - PWM 400 - PWM 400/7.5
Instruction manual
Figure 5: Three-phase electro pump output terminal
Wrong connection of the earth line to a terminal other than the earth one may cause
irremediable damage to the whole appliance.
Wrong connection of the power supply line on output terminals intended for the load
may cause irremediable damage to the whole appliance.
Once the electric and hydraulic connections are completed, turn on the system and configure it, as described
in chapter 4.
2.3 Electrical
connection
of PWM 400 and PWM 400/7.5
Power supply to the PWM 400 and PWM 400/7.5 devices should meet the following requirements:
Rated voltage
400 V (+ 10% / - 20%)
Minimum absolute voltage
320 V (400 V - 20%)
Maximum absolute voltage
457 V (415 V + 10%)
Frequency
50 / 60 Hz
Table 4: PWM 400 power supply requirements
DANGER
Electric shock risk
Before carrying out any installation or maintenance operation, always disconnect the PWM from the power
supply and wait at least 2 minutes before opening the appliance.
WARNING
Ensure that the voltage and frequency values of the PWM rating plate match those of the Power supply.
WARNING
Power supply voltage can change when the PWM device turns on the pump.
Power line voltage can change, due to connection of other devices and to quality of the line self.