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)
WB250 WB350 WB500
1 2 3 4 5 6 7 8
WB250 WB350 WB500
0
5
10
15
20
25
1 2 3 4 5 6 7 8
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)
–––– Centrifugal ----- Self-priming
Q (l/min)
–––– 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)
WB2000 WB3000G WB3800G WB4000 WB3500 WB5600 WB5500G
WB2000 WB2800G WB3000G WB3500 WB5500 WB7400 WB5500G WB9800
0 20 40 60 80 100 120 140 160
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
0 102030405060708090
250
25
35
350
30
300
200
20
25
250
150
15
20
200
7
3
7
10
100
15
150
2
3
6
10
100
5
50
4
8
5
50
5
6
0
0
1
5
4
2 1
0
50 100 150 200 250 300 350
0
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)
WB5500 WB8000 WB7400 WB9800 WB10500
1 2 3 4 5
0 20 40 60 80 100 120 140 160 180
350
35
10 15 20 25 30
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
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