Grundfos MS6000P Operating instructions

MS6000P
Submersible motors
Service instructions
GRUNDFOS INSTRUCTIONS

MS6000P
English (GB)
Service instructions ........................................................................4
3
Table of contents

English (GB) Service instructions
Original service instructions
Table of contents
1. General information ........................4
1.1 Hazard statements..........................4
1.2 Notes ..................................4
1.3 Position numbers...........................4
1.4 Before dismantling ..........................4
1.5 Before assembly ...........................5
1.6 During assembly ...........................5
2. Identification .............................5
2.1 Nameplate ...............................5
2.2 Product number key .........................5
2.3 Type key ................................6
3. Tightening torques and lubricants ...............7
4. Service tools .............................8
4.1 Standard tools ............................9
4.2 Special tools .............................9
4.3 Torque tools ..............................9
4.4 Measuring tools...........................10
5. Motor check/fault finding ....................10
6. Dismantling MS6000P ......................11
6.1 Component check .........................12
6.2 Replacement of the wear parts .................12
7. Assembling MS6000P ......................13
8. Dismantling MS6000P (flange extension) .........15
8.1 Component check .........................16
8.2 Replacement of the wear parts .................16
9. Assembling MS6000P (flange extension) .........17
10. Filling procedure with a syringe ...............19
11. Final check .............................19
12. Maintenance and service ....................20
12.1 Fault finding the product .....................20
13. Checking the motor and cable ................21
13.1 Winding resistance MS6000P ..................22
13.2 Insulation resistance........................22
14. Motor connection.........................22
14.1 MS6000P motors with single-cable connection........22
14.2 MS6000P motors with double-cable connection .......22
15. Parts list...............................23
16. Exploded drawing of MS6000/MS6000P ..........24
17. Exploded drawing of MS6000/MS6000P (flange
extension) .............................25
1. General information
Read this document before you start service work on the
product. Service work must comply with local regulations
and accepted codes of good practice.
Observe the safety instructions in the installation and
operating instructions for the product.
1.1 Hazard statements
The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
1.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
1.3 Position numbers
Position numbers of motor parts (digits) refer to section 16.
Exploded drawing of MS6000/MS6000P and section 17. Exploded
drawing MS6000/MS6000P (flange extension). Position numbers of
service tools (letters) refer to section 4. Service tools.
Related information
4. Service tools
16. Exploded drawing of MS6000/MS6000P
17. Exploded drawing of MS6000/MS6000P (flange extension)
1.4 Before dismantling
• Switch off the power supply to the motor.
• Disconnect the power supply cable in accordance with local
regulations.
4
English (GB)

1.5 Before assembly
• Clean and check all parts.
• Replace defective parts.
• Order the necessary service kits.
• Always replace O-rings when the motor is serviced.
1.6 During assembly
• Lubricate O-rings and tighten screws to the correct torque. See
section Tightening torques and lubricants.
2. Identification
2.1 Nameplate
DK-8850 Bjerringbro, Denmark
43 2 1
22
21
20
23
24
2526
27
28
29
10
9
8
7
5
11
12
13
6
16
15
14
17
18
19
Pos. Description
1Product number
- 76XXXXXX: product without packaging
2 Output power in [kW and hp]
3 Frequency
4 Type designation
Pos. Description
5 Supply voltage
6 Phases
7 Connection
8 Minimum operating frequency
9 Maximum operating pressure
10 Maximum liquid temperature at minimum flow past the
motor
11 Motor designed for continuous operation (S1)
12 CE mark and approvals
13 PM back EMF at 100 Hz
14 PM back EMF at 120 Hz
15 Inverter type
16 Enclosure class
17 Country of production
18 Insulation class
19 Net weight in [kg and lb]
20 Load type
21 Inverter duty
22 Rated speed min-1
23 Production code
24 Power factor cos φ at SF load
25 Serial number
26 Service factor current
27 Full load current
28 Model (A = first generation)
29 Service factor
2.2 Product number key
Example 76 20 46 17
Motor code Voltage code Configuration code Power code
Motor code
76 MS6000P
Voltage code Voltage range
100 Hz 120 Hz
20 3 x 350 V 3 x 410 V
37 3 x 350 V 3 x 410 V
Configuration code Sleeve material Tempcon Rubber material Shaft seal Radial bearing Motor liquid Temperature Flange extension
46 EN 1.4539 Without FKM BQQV Soft SML3 T60 Without
62 EN 1.4301 Without NBR BQQP Soft SML3 T60 With
77 EN 1.4301 Without NBR BQQP Soft SML3 T60 Without
Power code
12 7.5 kW 10 hp
17 18.5 kW 25 hp
20 30 kW 40 hp
22 45 kW 60 hp
5
English (GB)

2.3 Type key
Example MS6000P R E S X T60 3 x 350/100 410/120 18.5 kW
Pos. 1 2 3 4 5 6 7 8 9 10 11
Pos. Description
1 Motor type
P = MS6000P synchronous motor
2 Material type
-
R
=
=
EN 1.4301
EN 1.4539
3 Rubber
-
E
=
=
NBR
FKM
4 Shaft seal
-
S
Q
=
=
=
Ceramic/carbon
SiC/SiC
SiC/SiC
BXPFF/NBR
Q1Q1VFF/FKM
Q1Q1PFF/NBR
5 Radial bearings
-
W
=
=
Carbon graphite/stainless steel
SIC/Tungsten carbide
6 Motor liquid
-
D
H
=
=
=
SML-3
Demineralised water
Glycol 60 vol % HTF
7 Flange extension
-
F
=
=
Without
With
8 Tempcon
X = Without
9 Max. liquid temperature
T60 = 60 °C
10 Voltage
3 x 350/100 410/120 = 3 x 350 V/100 Hz - 3 x 410 V/120 Hz
11 Motor power
4 kW
5.5 kW
7.5 kW
9.2 kW
11 kW
13 kW
15 kW
18.5 kW
22 kW
26 kW
30 kW
37 kW
45 kW
5.5 hp
7.5 hp
10 hp
12 hp
15 hp
18 hp
20 hp
25 hp
30 hp
35 hp
40 hp
50 hp
60 hp
The type key cannot be used for ordering as not all combinations are available.
6
English (GB)

3. Tightening torques and lubricants
Pos. Designation Quantity Dimensions
[mm]
Torque
[Nm] Lubricant
22 Hexagon head screw 4 (8*) 1/2"-20 UNF-2A x 32 50 ± 7 Nm -
22a Screw with nylon washer 1 M5 x 20 3.5 ± 0.5 Nm -
24 O-ring 1 ∅65 x 2.5 - Shell Cassida
32 Shaft seal housing 1 - - Shell Cassida
32a Seal ring 1 - - Shell Cassida
33 Shaft seal, stationary part 1 - - Shell Cassida
34 Shaft seal, rotating part 1 - - Motor liquid
41 Hexagon socket head cap screw 4 M10 x 20 46 ± 5 Nm -
45a Hexagon socket head cap screw 1 M5 x 25 4.5 ± 0.5 Nm -
46 Screw with Nyltite 4 M5 x 25 4.5 ± 0.5 Nm -
48 Screw 4 M5 x 20 4.5 ± 0.5 Nm -
50 Screw 4 M6 x 15/M6 x 16** 4.5 ± 0.5 Nm -
220a Screw 2 M6 x 15/M6 x 16** 4.5 ± 0.5 Nm -
* Motor with flange extension
** Motor in R-version
Related information
7. Assembling MS6000P
9. Assembling MS6000P (flange extension)
7
English (GB)

4. Service tools
A B C D E
G H I J K L
M N O P Q R
S T U V W Y
Z AA AB AC AN
AD
AE AF AG AH AI AJ AK AL
Related information
1.3 Position numbers
8
English (GB)

4.1 Standard tools
Tool Description Pos. Part number
A Screwdrivers, cross and slot 32, 49 -
B Torx 20 screwdriver 22a, 50, 221 -
C Torx 25 screwdriver 45a, 46, 48 -
D Open-end spanner 17 mm 22 -
E Open-end spanner 19 mm 22 -
G Hexagon tee key 8 mm 41 -
H Hexagon head driver 8 mm 41 -
I Plastic mallet - -
J Slide gauge - -
K Depth gauge - -
4.2 Special tools
Tool Description Pos. Part number
L Jaws 2 00SV7900
M Torx 50 head driver (machined) 22 96164206
N Ring spanner (machined) 22 96164186
O Puller for rotating thrust bearing 7.5 and 27 kN 6 00SV0335
P Plug for puller I, 6 00SV7923
Q Puller for rotating thrust bearing 40 kN 6 00SV7920
R Punch for rotating thrust bearing 7.5 kN 6 96164233
S Punch for rotating thrust bearing 27 and 40 kN 6 96164234
T Bracket 1 96164181
U Spanner for shaft height adjustment 45b 00SV7921
V Punch for shaft seal 33, 34 V7216306
W Filling syringe 1 00SV8000
X Vacuum filling device 1 00SV0088
Y Spline head driver (torque measurement) 2, U 96164190
Z Shaft height gauge 2 00SV0115
AD Shaft with rotor alignment tool, consisting of tools AE to AL 2, 5 99917700
AE Centering flange - -
AF Centering flange - -
AG Shaft extension - -
AH Shaft extension - -
AI Alignment disc - -
AJ Positioning screw, 4 pcs. - -
AK Shaft conical bearing - -
AL Assembly tool - -
AN Cable plug protection cap - 780418
4.3 Torque tools
Tool Description Pos. Part number
AA Torque wrench 40-200 Nm 22, 41 -
AB Torque screwdriver 1-6 Nm 22a, 50, 221, 45a, 46, 48 -
AC Ratchet insert tool -
9
English (GB)

4.4 Measuring tools
Description Part number
Multimeter -
Megger -
5. Motor check/fault finding
Used motors must be checked and dismantled. Inspect
and document the observations of each component during
dismantling. Check the following:
• Check the motor for damage and fractures.
• Check that the motor is filled with liquid and has no leaks at the
diaphragm or shaft seal. Place the motor with the filling screw
(22a) upwards and remove the screw; turn the shaft end and
check the motor liquid level. The motor liquid level must be
visible.
• Check that the height from the shaft end to the contact face of
thread holes is 72.8 ± 0.2 mm.
• Check that the axial clearance is minimum 1 mm.
• Check that the motor shaft spins freely.
• Check that the plug pins for the cable connection are not
defective or burnt.
• Check that the winding resistance is as stated in electrical data.
See sections 13. Checking the motor and cable and 13.1
Winding resistance MS6000P.
• Check that the motor insulation resistance complies with local
regulations. See section 13.2 Insulation resistance.
• Check the motor cable and the submersible drop cable for visual
damage.
• Submerge the motor cable and the submersible drop cable in
water and check that there is no leakage in the cables
measuring their insulation resistance with a megger.
• Measure the electrical resistance of the motor with the cable
mounted on.
• Measure the insulation resistance of the motor with the cable
mounted on using a megger.
• Measure the electrical resistance of the motor without cable,
directly on the terminals.
• Measure the insulation resistance of the motor without the
cable, directly on the terminals using a megger.
Related information
13. Checking the motor and cable
13.1 Winding resistance MS6000P
13.2 Insulation resistance
10
English (GB)