30 31
45°
If there is a risk of sediment build-up, su ch as sand,
around the motor, a f low sleeve sh ould be used in
order to ensure pr oper cooling o f the motor.
* At an ambient pre ssure of min imum 1 bar ( 1 MPa)
5. Electrical con nection
5.1 General
The electrical connection should be carried out by an
authorised electric ian in accord ance with loc al
regulations.
The supply volta ge, rated maximum cu rrent and
cos appear from the loose data p late that must be
fitted close to th e installation site.
The required vol tage quality for Grund fos MS and
MMS submersible mot ors, measured at the motor
terminals, is – 10 %/+ 6 % of t he nominal v oltage
during continuous o peration (inc luding variati on in
the sup
ply voltage and loss es in cables ).
Furthermore, it must be che cked that there is vo ltage
symmetry in the el ectricity su pply lines, i.e. same
difference of v oltage bet ween the individua l phases.
See also 9. Checki ng of motor an d cable, po int 2.
If MS motors with a b uilt-in tempe rature transmitte r
(Tempcon) are not insta lled t ogethe r with an MP 2 04
or similar Grundfos motor protec tion, they mu st be
connected to a 0.4 7 µF capacitor app roved for
phase-phase operat ion (IEC 384- 14) to meet t he
ECEM C directive ( 2004/108/EC). The capacit or
must be connected to the two ph ases to which the
temperature transm itter is con nected. See f ig. 4.
Fig. 4 Connection of ca pacitor
The
motors are wound for direct-on -line starting or
star-delta startin g and the st arting current is betw een
4 and 6 times the r ated current of the motor.
The run-up time of the motor is only abou t
0.1s econd. Direct -on-line starti ng is there fore
normally approved by the electr icity supply
authorities.
5.1.1 Frequency con verter operat ion
Three-phase MS motors can be connec ted to a
frequency converte r.
If a temperature t ransmitter is required, a Pt100
sensor for fitting to the submer sible motor c an be
ordered from Grund fos.
Note
In cases where the stated liqu id
velocity cannot be achieved, a f low
sleeve must be ins talled.
Motor
Installation
Flow
past the
motor
Vertical Horizontal
MS 402
MS 4000
MS 6000
0.15 m/s
40 °C
(~ 105 °F)
40 °C
(~ 105 °F)
MS 4000I*
MS 6000I*
0.15 m/s
60 °C
(~ 140 °F)
Flow sleeve
recommended
60 °C
(~ 140 °F)
Flow sleeve
recommended
MS6T30 0.15 m/s
30 °C
(~ 86 °F)
30 °C
(~ 86 °F)
MS6T60 1. 0 m/s
60 °C
(~ 140 °F)
60 °C
(~ 140 °F)
MMS
0.15 m/s
25 °C
(~ 77 °F)
25 °C
(~ 77 °F)
0.50 m/s
30 °C
(~ 86 °F)
30 °C
(~ 86 °F)
Note
For 37 kW MMS 6000, 110 kW MMS 800 0
and 170 kW MMS 1000 0, the maxim um
liquid temperatur e is 5 °C lo wer than
the values stated in the above t able.
For 190 kW MMS 100 00, the
temperature is 10 °C lower.
Warning
Before starting work on the motor,
make sure that the electricity supply
has been switched off and that it cann ot
be accidentally switched on.
Warning
The motor must b e earthed.
The motor must be connected to an
external mains swi tch with a mi nimum
contact gap of 3 m m in all poles .
Caution
If an MS motor w ith temperat ure
transmitter is connec ted to a frequency
converter, a fuse inc orporated in t he
transmitter will melt and the transmitter
will be inactive. T he transmitte r cannot
be reactivated. Thi s means that the
motor will operate like a motor without
a temperature trans mitter.
1
2
3
4
1 = L1: brown
2 = L2: black
3 = L3: grey
4 = PE: yellow/gre en
0.47 F
8
4.1.2 Grundfos MS6 and MS 6000 submersible
motors
• If the motor is delivered f rom stock, th e liquid
level must be chec ked before th e motor is
installed. See fig. 2.
• In the case of service, t he liquid le vel must be
checked. See fig. 2.
Filling procedure:
The filling hole for m otor liquid is p laced at the top of
the motor.
1. Posi tion the subm ersible m otor as shown i n fi g. 2.
The filling scr ew must be at the highe st point of
the motor.
2. Remo ve the screw from the fill ing hole.
3. Inje ct liquid int o the motor w ith the filli ng syringe,
fig. 2, until the liquid runs b ack out of the filling
hole.
4. Repl ace the screw in the filli ng hole and t ighten
securely before ch anging the pos i
tion of the
motor.
Torque: 3.0 Nm.
The submersible mo tor is now rea dy for install ation.
Fig. 2 Motor position during fillin g – MS6 and
MS 6000
4.1.3 Grundfos MMS 6000, MMS 8000, MMS 10000
and MMS 12000 subm ersible motors
Filling procedure:
Place the motor at a 45 ° angle with the top of the
motor upwards. See fig. 3.
5. Unsc rew the plug (A) and place a funnel in the
hole.
6. Pour tap water into the motor until the motor liquid
inside the motor sta rts runn ing out a t the p lug (A ).
Caution: Do not us e motor liqu id as it conta ins
oil.
7. Remo ve the funnel and refit th e plug (A).
The submer
sible motor is now ready for ins tallation.
Fig. 3 Motor position during fillin g – MMS
4.2 Positional requirements
The motor can be i nstalled either vertically o r
horizontally.
A complete list of motor types s uitable for ho rizontal
installation is sho wn in section 4.2.1.
4.2.1 Motors suitabl e for horizonta l installation
4.3 Liquid tempe ratures/cooli ng
The maximum liqui d temperature and the minim um
liquid velocity pas t the motor a ppear from th e
following table.
It is recommended to insta ll the motor above the we ll
screen in order to achieve prop er motor cooli ng.
TM03 8129 0507
Caution
Before fitting the motor to a pump after
a long period of storage, lub ricate the
shaft seal by addin g a few dro ps of
water and turning t he shaft.
45°
TM03 2065 3605
Motor type
Power output
50 Hz
Power output
60 Hz
[kW] [kW]
MS All sizes All sizes
MMS 6000 3.7 to 30 3.7 to 30
MMS 8000 22 to 92 22 t o 92
MMS 10000 75 to 170 75 to 170
MMS 12000 147 to 220 –
Caution
During operation, t he motor mu st
always be completely sub merged in the
liquid. Please con sult the pump
manufacturer's NPS H data.
Warning
If the motor is u sed in hot l iquids
(40 to 60 °C), it must b e ensured that
persons cannot co me into con tact with
the motor and the i nstallation, e.g. by
installing a guard.
45°
A
1 3
4 2
280Nm
45°
!
If there is a risk o f sediment b uild-up, such as sand,
around the motor, a fl ow sleeve shou ld be used in
order to ensure prop er cooling of the motor.
* At an ambient pres sure of minim um 1 bar (1 MPa)
5. Electrical conne ction
5.1 General
The electrical connection sho uld be carried out by an
authorised electricia n in accordan ce with local
regulations.
The supply voltag e, rated m aximum cur rent and
cos appear from the loose d ata plate th at must be
fitted close to the installation site.
The required voltag e quality for Grundf os MS and
MMS submersible motor s, measured a t the motor
terminals, is – 10 % /+ 6 % of th e nominal vol tage
during continuous ope ration (inclu ding variation in
the sup
ply voltage and losses in cables).
Furthermore, it must be chec ked that there is volta ge
symmetry in the elec tricity supp ly lines, i.e . same
difference of vol tage betw een the i ndividual phases.
See also 9. Checking of motor and cable, poin t 2.
If MS motors with a bu ilt-in temperat ure transmitter
(Tempcon) are not insta lled to gether with a n MP 2 04
or similar Grundfos m otor protecti on, they must be
connected to a 0.47 µF capacitor appro ved for
phase-phase operatio n (IEC 384-14 ) to meet the
ECEMC directive (20 04/108/EC). The capacito r
must be connected to the two phas es to which t he
temperature transmit ter is conne cted. See fig . 4.
Fig. 4 Connection of capacitor
The
motors are wound for direct-on- line starting or
star-delta starting and the sta rting c urrent is betwe en
4 and 6 times the rat ed current o f the motor.
The run-up time of the motor is only about
0.1sec ond. Direct-o n-line startin g is theref ore
normally approved by the electric ity supply
authorities.
5.1.1 Frequency conve rter operatio n
Three-phase MS m otors can be connected to a
frequency converter.
If a temperature tra nsmitter is required, a P t100
sensor for fitting to the submersi ble motor can be
ordered from Grundfo s.
Note
In cases where th e stated liquid
velocity cannot be ac hieved, a flo w
sleeve must be insta lled.
Motor
Installation
Flow
past the
motor
Vertical Horizontal
MS 402
MS 4000
MS 6000
0.15 m/s
40 °C
(~ 105 °F)
40 °C
(~ 105 °F)
MS 4000I*
MS 6000I*
0.15 m/s
60 °C
(~ 140 °F)
Flow sleeve
recommended
60 °C
(~ 140 °F)
Flow sleeve
recommended
MS6T30 0.15 m/s
30 °C
(~ 86 °F)
30 °C
(~ 86 °F)
MS6T60 1.0 m/s
60 °C
(~ 140 °F)
60 °C
(~ 140 °F)
MMS
0.15 m/s
25 °C
(~ 77 °F)
25 °C
(~ 77 °F)
0.50 m/s
30 °C
(~ 86 °F)
30 °C
(~ 86 °F)
Note
For 37 kW MMS 6000, 110 kW MMS 8000
and 170 kW MMS 10000 , the maximum
liquid temperature is 5 °C lowe r than
the values stated in the above tab le.
For 190 kW MMS 10000 , the
temperature is 10 °C lower.
Warning
Before starting w ork on the m otor,
make sure that the e lectricity su pply
has been switched off and that it cannot
be accidentally s witched on.
Warning
The motor must be earthed.
The motor must be connected t o an
external mains switc h with a min imum
contact gap of 3 mm in all poles.
Caution
If an MS motor wit h temperatu re
transmitter is connecte d to a frequency
converter, a fuse incor porated in th e
transmitter will melt and the transmitter
will be inactive. The transmitter cannot
be reactivated. This means that th e
motor will operate li ke a motor wi thout
a temperature transm itter.
1
2
3
4
1 = L1: brown
2 = L2: black
3 = L3: grey
4 = PE: yellow/green
0.47 F
8
4.1.2 Grundfos MS6 a nd MS 6000 s ubmersible
motors
• If the motor is d elivered fro m stock, the liquid
level must be checke d before the motor is
installed. See f ig. 2.
• In the case of se rvice, the liquid lev el must be
checked. See fig. 2 .
Filling procedure:
The filling hole for mot or liquid is pl aced at the t op of
the motor.
1. Posit ion the subme rsible mo tor as s hown i n fig . 2.
The filling scre w must be a t the highest point of
the motor.
2. Remov e the screw fr om the fillin g hole.
3. Injec t liquid into the motor wit h the filling syringe,
fig. 2, until the li quid runs ba ck out of the f illing
hole.
4. Repla ce the screw i n the filling hole and tig hten
securely before chan ging the posi
tion of the
motor.
Torque: 3.0 Nm.
The submersible moto r is now read y for installat ion.
Fig. 2 Motor position during filling – MS6 and
MS 6000
4.1.3 Grundfos MMS 6000, MMS 8000, MMS 10000
and MMS 12000 submer sible motors
Filling procedure:
Place the motor at a 45 ° angle w ith the top of the
motor upwards. See f ig. 3.
5. Unscr ew the plug (A ) and place a funnel in th e
hole.
6. Pour tap wa ter into the mo tor until the mo tor liquid
inside the motor star ts runnin g out at the pl ug (A) .
Caution: Do not use motor liquid as it contai ns
oil.
7. Remov e the funnel a nd refit the plug (A).
The submer
sible motor is now r eady for insta llation.
Fig. 3 Motor position during filling – MMS
4.2 Positional re quirements
The motor can be ins talled either vertically or
horizontally.
A complete list of m otor types su itable for hori zontal
installation is show n in section 4.2.1.
4.2.1 Motors suitable for horizontal installation
4.3 Liquid tempera tures/cooling
The maximum liquid temperature an d the minimum
liquid velocity past the motor app ear from the
following table.
It is recommended to instal l the motor a bove the wel l
screen in order to a chieve proper motor coolin g.
TM03 8129 0507
Caution
Before fitting the mo tor to a pump a fter
a long period of st orage, lubr icate the
shaft seal by adding a few drops of
water and turning the shaft.
45°
TM03 2065 3605
Motor type
Power output
50 Hz
Power output
60 Hz
[kW] [kW]
MS All sizes All s izes
MMS 6000 3.7 to 30 3.7 to 30
MMS 8000 22 to 92 22 to 9 2
MMS 10000 75 to 170 75 to 170
MMS 12000 147 to 220 –
Caution
During operation, the motor must
always be completely subme rged in the
liquid. Please consu lt the pump
manufacturer's NPSH data.
Warning
If the motor is use d in hot liq uids
(40 to 60 °C), it mu st be ensured that
persons cannot come into cont act with
the motor and the in stallation, e. g. by
installing a guard.
45°
A
98
Pt100/1000
MMS12”
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