Grundfos MP1 Montage- Und Betriebsanleitung Seite 3

English (GB) Installation and operating instructions
Original installation and operating
instructions.
CONTENTS
1. Replacement/shortening of motor
cable
2. Replacement of motor cable
3. Shortening of motor cable
3.1 Cable end to motor:
3.2 Checking of direction of rotation
1. Replacement/shortening of
motor cable
Note: The submersible drop cable must be
complete and without cable joint from the
motor to the converter.
A previously connected cable must be fitted
with a new cable kit before it can be reused.
See 3. Shortening of motor
215a
215
201a
200
222
214
i
b
20
c
20a
d
e
Fig. 1
2. Replacement of motor cable
Slacken and remove the screw, pos. 215a,
together with the strainer, pos. 215. See fig. 1.
Screw the pump housing, pos. 201a, (right-
hand thread) off the suction interconnector,
pos. 214. Pull the pump housing and the
impeller assembly, pos. 200, off the motor
shaft.
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cable.
k
d
20a
20
f
g
222a
Push the impeller assembly out of the pump
housing from the discharge side.
Slacken the screw, pos. 20k, for the earth lead
and pull it off the screw, pos. 222a, together
with the earth lead and the washers, pos. 20d
and 20f.
Slacken and remove the screws, pos. 222 and
222a.
Pull the suction interconnector, pos. 214, off
the motor.
Slacken and remove the screws, pos. 20b,
holding the motor cable.
Pull the motor cable off the motor.
Screw positions 20d and 20e out of the motor
using a small screwdriver and precision
electronic pliers.
Before fitting the motor cable, clean the holes in
the motor.
Pull positions 20b, 20d and 20e on the three
leads (phases) of the motor cable. On the earth
lead (yellow/green), the order is pos. 20k, 20d
and 20f. See fig. 1.
Bend the stripped end of the earth lead. See
fig. 1.
When fitting the plugs in the motor, the first plug
can be fitted arbitrarily. Then it is very important
that the colour sequence is correct. Clockwise
the order is black - blue - brown. See fig. 2.
Fig. 2
Push the plug of the lead into the plug of the
stator. Then press positions 20e and 20d
around the lead and tighten by means of the
screw, pos 20b.
Fit the suction interconnector, pos. 214, to the
shaft and secure it to the motor with the
screws, pos. 222 and 222a.
Position the washer pos. 20g, on the screw,
pos. 222a. Hold the earth lead against the
washer while the screw, pos. 20k, is tightened.
Position the cable along the pump housing (in
the recess). Push the strainer, pos. 215, over
the pump housing and press it against the
motor. Turn the strainer to the right so that the
hole of the strainer and that of the pump
housing are in the same position. Fit and
tighten the screw, pos. 215a.
Check the direction of rotation, see
3.2 Checking of direction of rotation.
3