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Grundfos Submersible Pumps with MS402 and MS4000 single phase, 3-wire,
PSC motors must be connected to mains via a motor capacitor that is
permanently connected during the operation. This type of motor does not
require the starting capacitor. It only requires the running capacitor. The ratings
of the capacitors are explained in the below table. Grundfos recommends using
only the capacitors as per the below mentioned ratings and the capacitor must
be installed as per the guidelines mentioned below.
Note:
The warranty will be null & void if the suggested type, quality, and rating
of capacitor is not followed as mentioned below:
CAPACITOR RATINGS AS PER MOTOR KW:
MOUNTING INSTRUCTIONS:
The below steps to be followed for proper installation of the running capacitor:
Open the top cover gently, using normal star screwdriver.
While opening the cover, make sure you don’t damage the existing clip type
probes, which is connected to the back of the cover.
House the capacitor inside the holder by lifting the left side of the clamp and
press it after inserting the capacitor, as shown in the Figure 1. and 2.
Connect the capacitor cables to the specified terminal by gently bringing in
cable below the circuit board (as shown in the picture), without disturbing the
existing parts.
Make sure you tighten the cables to the terminal and close the top cover.
CAPACITOR
Space for Capacitor
Terminals for Capacitor
connection
1.
Without capacitor
2.
With capacitor
Motor
Power
Capacitor
(mfd)
Grundfos Capacitor kit
Part Number
0.37 Kw
16uF, 400V
Kit, Capacitor, 16MF
400V, MG71
96279800
0.55 kw
20uF, 400V
Kit, Capacitor, 20uF
400V, MG71, MG80
96279732
0.75 Kw
30uF, 400V
Kit, Capacitor, 30MF
400V, MG80
96279808
1.1 kw
40uF, 400V
Kit, Capacitor, 40MF
400V, MG90
96279810
