Grundfos MQ 3-45 - Wiring Diagram and Resistance Measurement (115 V)

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English (US)
9.2 Wiring diagram
9.2.1 115 V
Fig. 14 Wiring diagram - 115 V
9.3 Winding resistance measurement
The measurement can be done with or without cables connected to the PCB and the capacitor.
TM02 2424 4708
Black (phase)
Red
Black
Orange
> Flow sensor
> Pressure switch
Capacitor
Yellow
Yellow
Electric motor
Yellow/green (ground)
Red (main)
Black
White (neutral)
> Cable
B
A
Yellow
White
C
Motor
[V/Hz]
Measuring point Winding
Resistance
[Ω ± 10 %]
Ambient temperature
[°F] [°C]
115/60
A-B (black - red) Main 1.4
70 21
A-C (black - white) Aux 5.5