Wiring Diagram; Winding Resistance Measurement - Grundfos MQ Serie Notice D'installation Et D'entretien

6.2 Wiring diagram

Fig. 9
Electric motor

6.3 Winding resistance measurement

Motor
Measuring point
[V/Hz]
230/50
230/60
120/60
The measurement can be done with or without cables connected to the PCB and the capacitor.
10
Capacitor
Blue
Ground
Phase
Neutral
Winding
A-B Main
A-C Aux
A-B Main
A-C Aux
Yellow/green
Brown
=> Mains
Blue
Red Red
Black
=> Flow sensor
Orange
=> Pressure switch
Ambient temperature
Resistance
[Ω ±10%]
[°C]
6.4
16.7
21
1.5
6.1
[°F]
70