44
3013-0000 ,:,,5 6YPNPUHS THU\HS 0UZ[Y\J[PVU 4HU\HS /.+ 3ULPH 3XPS
3013-0000
!
!
!
3 Installation
Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation.- See pre-use check in section 3.3 Pre-use checkThe pump is heavy.Alfa Laval therefore recommends the use of a lifting crane when handling the pump.
Step 8Installation guide lines
1. Suction considerationsInstallation - Ensure the suction line is designed so the Prime pump is liquid filled at start up, eg. swan
neck. (see table in Step 6)- Design suction line with slope down toward the pump to avoid air entrapments
NPSH - Ensure NPSHa > NPSHr under all duty conditions including all temperaturesAir inclusions - Controlled start/stop of pump eg. Level Switch (LS)
- Do not start the LKH Prime before tank bottom is liquid filled- Stop the LKH Prime during phase changes
2. General pump considerationsVFD - Minimum speed for effective air evacuation is 2800 RPM
- Air evacuation ability improves with higher speed (Max speed 3600 RPM)Pump sizing - The LKH Prime must be sized for the specific duty point
Note: LKH Prime is NOT a one-to-one replacement of the MR pump
3. Discharge considerationsInstallation - Ensure minimum length of vertical pipe after the LKH Prime (see table in Step 6)Check valve - Place check valve as far away from the pump as possible
- Replace check valve with automated valve if possible
1
3
5
2
4
LS
Pos1 Suction line2 LKH Prime Pump3 Discharge line4 Check valve5 Level switch
11
!
!
!
!
!!
!
!
!
!
3013-0073
3013-0048
3013-0049 3013-0050
3013-0051 3013-0058
DMSS42
40a51
50 1444
155215
13
14
42
41
3013-0052
2
2a
3
46
1819
35
35a
1
30a
32
31 34
33
30b
5a8
79
5b
6a6
1013
1514
2021
23
22
22
17
16
2424a 25 12
26 11
37
28
29
59
55
56
57
58 60
57
38
7a39
DMSS42
40a51
50 1444
155215
13
14
42
41
3013-0052
2
2a
3
46
1819
35
35a
1
30a
32
31 34
33
30b
5a8
79
5b
6a6
1013
1514
2021
23
22
22
17
16
2424a 25 12
26 11
37
28
29
59
55
56
57
58 60
57
38
7a39
DMSS42
40a51
50 1444
155215
13
14
42
41
3013-0052
2
2a
3
46
1819
35
35a
1
30a
32
31 34
33
30b
5a8
79
5b
6a6
1013
1514
2021
23
22
22
17
16
2424a 25 12
26 11
37
28
29
59
55
56
57
58 60
57
38
7a39
