Danfoss MPE 70, Руководство по эксплуатации

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Operating guide | MPE 70
14
180R9426 | AQ367027814446en-000801 | IOM MPE 70 | 08.2022
Loop Nº Control reference
Position
number
Control element
Position
number
Set points
1 Pressure transmitter 21 Seawater intake pumps -
2 barg
(29 psig)
2 Low pressure inlet flow 12 Control valve 15 Design flow
3 Booster pump flow 29 Booster pump 30 Design flow
4 Booster pump flow 29 MPE 70 11 Design flow
5
Fresh water permeate
flush
12 Control valve 15
Design flow
for flushing
6 MPE 70 flushing 12 Seawater intake pumps Design flow
7 MPE 70 flushing 29 Booster pump & MPE 70 30 & 11 Design fow
8 MPE 70 flushing 12 Control valve 15 Design flow
It is recommended to disconnect all connec-
tions to the MPE 70 and to thoroughly flush
the piping before the MPE 70 is connected
to the inlet and outlet connections.
Prior to the initial start-up, all piping
associated with the MPE 70 unit should be
thoroughly flushed to assure that no
impurities enter the MPE 70. Inadequate
pre-flushing will strongly affect the life
of the MPE 70 and may lead to its eventual
breakdown.
It is essential that the water used for
the final pre-flush is pre-filtered to a
level described in chapter 6.8.
M
HP in
HP out
M
Permeate
F
F F
MPE 70
M
HP in
HP out
VFD
6
19
17
8
9
27
15
10 11
11
12
Drain
4
18
2
M
4
18
LP in
*
*
Second stage filter: If recommended housing design and cartridges are not used, a second stage filter is
required
1
21
2
PS
PI
PS
PI
14
PI
PI PI
PI
3
22
22
PS
24
23
25
25
26
26
CIP
28
F
29
M
30
31
MPE 70
VFD
VFD
VFD VFD
23
LP out
1. Flowmeter
2. Pressure indicator
3. Pressure Switch
4. Motor HP pump
5. Pressure indicator
6. Safety valve
7. Plug valve
8. Venting valve
9. Plug valve
10. Pressure indicator
11. MPE 70
12. Flowmeter
13. Fresh water permeate flush
14. Pressure indicator
15. Controll valve
16. Membrane
17. Flowmeter
18. Check valve
19. Full flow cleaning/CIP
20. Frequency converter
21. Pressure indicator
22. Frequency converter
23. Frequency converter
24. Pressure Indicator
25. HP Hose
26. LP Hose
27. Plug valve
28. Plug valve
29. Flowmeter
30. Booster pump
31. Media filter
32. 5 µm Nominal Melt blown filter
33 Filter 10 micron ABS
13
21
7
5
20
16
32
31
33
1. Flowmeter
2. Pressure indicator
3. Pressure Switch
4. Motor HP pump
5. Pressure switch
6. Safety valve
7. Plug valve
8. Venting valve
9. Plug valve
10. Pressure indicator
11. MPE 70
12. Flowmeter
13. Fresh water permeate flush
14. Pressure indicator
15. Flow control valve
16. Membrane
17. Flowmeter
18. Check valve
19. Full flow cleaning/CIP
20. Frequency converter
21. Pressure indicator
22. Frequency converter
23. Frequency converter
24. Pressure switch
25. HP Hose
26. LP Hose
27. Plug valve
28. Plug valve
29. Flowmeter
30. Booster pump
31. Media filter
32.5 μm Nominal Melt blown filter
33 Filter 10 micron ABS
6. Operation and
Controls
For the startup and shutdown of the MPE
70 the following steps should be followed
for safe operation. The Preferred P&ID and
control loops will be used in the explana-
tions below.
6.1 Initial start-up and flushing
Strainers do not eliminate the need for
thoroughly pipe flushing before commis-
sioning.
For more information on the importance
of proper filtration, please consult our
publication data sheet, “Filter solutions for
high-pressure pumps and ERDs”, which also
will provide you with an explanation of filtra-
tion definitions and guidance on
how to select the right filter.
Preferred P&ID
Control loops