Pumps
60 Hz water pump curves
Graphic 4
60 Hz up to 100 l / min.
Q (gpm)
0
5
10
15
20
25
1 2 3 4 5 6 7 8
WB250 WB350 WB500
25
250
20
200
WB500G WB1000 WB1000G WB1500 WB2500G
15
150
8
4
10
100
6
5
50
7
1 2 3
5
0
0
0
10 20 30 40 50 60 70 80 90 100
Q (l/min.)
–––– Centrifugal ----- Self-priming
Graphic 5
60 Hz up to 700 l / min.
Q (gpm)
0 20 40 60 80 100 120 140 160
1 2 3 4 5 6 7 8 9
WB2000 WB2800G WB3000G WB3500 WB5500 WB7400 WB7500 WB5500G WB9800
10 15 20 25 30 35
100 150 200 250 300 350
8
3
0 5
50
6 9
5
4
2 1
7
0
0
100 200 300 400 500 600
Q (l/min.)
–––– Centrifugal ----- Self-priming
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.
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