You are sent to troubleshoot a Taco model 2510 3x2.5-10 pump and find its pump c

Question

You are sent to troubleshoot a Taco model 2510 3x2.5-10 pump and find its pump curve. You perform a deadhead test and get a pressure across the pump of 37.7psi with flow = 0 GPM. What is most likely the impeller size in inches?

Model 2510 CE & FE Series 10 1760 RPMCurve No. 1283 aco Min. Imp. Dia. 8.05 Size 3 x 2.5 x 10 15 20 L/SEC 30 50 45 NPSH IN FEET 6 8 012 4 16 18 40 125 10.40" 35 O.00'" 10019.50" 9.00" 8.50" 8.05" 30 25 75 20 60% 50 15 CURVES BASED ON CLEAR WATER WITH SPECIFIC GRAVITY OF .0 1 0 3/93 25 O 5O OO 15O 200 25O 300 350 400 450 500 FLOW IN GALLONS PER MINUTE

Explanation / Answer

Sol: as pressure across the pump is 37.7 Psi with flow of 0 GPM.

so water head z = (pressure/ specific weight) = 259.932 kPa /9810 = 26.5 m

from the pump curve at a head of 26.5m and flow of 0GPM, The impeller size would be aproximately 9.00".

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