Pumps
Pumps
50 Hz water pump curves
60 Hz water pump curves
Graphic 1
50 Hz up to 100 l / min
Graphic 4
60 Hz up to 100 l / min
Q (gpm)
Q (gpm)
0
5
10
15
20
25
1 2 3 4 5 6 7 8
WB250 WB350 WB500
1 2 3 4 5 6 7 8
WB250 WB350 WB500
0
5
10
15
20
25
250
25
10 12 14 16 18
100 120 140 160 180
20
200
WB500G WB1000 WB1000G WB1500 WB2500G
WB500G WB1000 WB1000G WB1500 WB2500G
150
15
4
8
8
4
0 20 40 60 80
2 4 6 8
10
100
6
5
50
6
3
2
0
7
1
5
0 10 20 30 40 50 60 70 80 90 100
7
1
2 3
5
0
0
0
10 20 30 40 50 60 70 80 90 100
Q (l/min)
Q (l/min)
–––– Centrifugal ----- Self-priming
–––– Centrifugal ----- Self-priming
Graphic 2
50 Hz up to 300 l / min
Graphic 5
60 Hz up to 700 l / min
Q (gpm)
Q (gpm)
0 20 40 60 80 100 120 140 160
1 2 3 4 5 6 7
WB2000 WB3000G WB3800G WB4000 WB3500 WB5600 WB5500G
1 2 3 4 5 6 7 8
WB2000 WB2800G WB3000G WB3500 WB5500 WB7400 WB5500G WB9800
0 10 20 30 40 50 60 70 80 90
250
25
10 15 20 25 30 35
100 150 200 250 300 350
200
20
150
15
7
3
7
10
100
2
3
6
5
50
4
8
0 5
50
5
6
0
0
1
5
4
2 1
0
50
350
100
200
150
250
300
0
0
100 200 300 400
500
600
Q (l/min)
Q (l/min)
–––– Centrifugal ----- Self-priming
–––– Centrifugal ----- Self-priming
Graphic 3
50 Hz up to 700 l / min
Q (gpm)
1 2 3 4 5
WB5500 WB8000 WB7400 WB9800 WB10500
0 20 40 60 80 100 120 140 160 180
350
10 15 20 25 30 35
250 300
The Head (m) stated in the pump curves (Graphic 1 – 5) represents the equivalent pressure drop between inlet and outlet of the pump. This pressure drop equals the total back pressure of the sea water system from sea water entry to overboard discharge. Please do not confuse it with the position of the pump position below the water line. Depending on pressure drop the effective water flow through the pump and thus the sea water system varies significantly. Always ensure that the minimum sea water flow through the A/C unit is respected. It should be measured during each commissioning of the sytem. Operating the pumps outside the limits of the pump curves may result in motor overload or cavitation. These cases are excluded from Webasto warranty.
200
100 150
2
5
0 5
50
4
3
1
0
Q (l/min) 0 100 200 300 400
500
600
700
–––– Centrifugal ----- Self-priming
146
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