Hypro 1542A-SP Series, Installation, Operation, Repair And Parts Manual, Page: 5 / 8

Troubleshooting
Symptom Probable Cause(s) Corrective Action(s)
No discharge Pump not priming Discharge line must be open for priming to
occur. If valve is installed, check that it is open.
Pump not priming Fill priming chamber with water.
Pump not priming Increase engine speed.
Low discharge Air leaks in suction line Check inlet fittings for leaks. Seal leaks.
Undersized or collapsed suction hose Suction inlet hose should be same diameter
as inlet port fitting. Check hose for kinks.
Blocked or clogged inlet Inspect basket strainer and clear any debris
from screen.
Impeller plugged Inspect and clear obstruction.
Fluid leaking from pump Mechanical seal failure Determine fluid is coming from weep holes
between pump and engine. Change out seal.
Crack in pump housing Check casing and casing cover for damage.
Engine doesn’t run Check oil & gas Refer to engine manual for troubleshooting
problem.
5 PSI 10 PSI 15 PSI 20 PSI 25 PSI 30 PSI 35 PSI 40 PSI 45 PSI 50 PSI
GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM
147 144 136.6 124.7 110.2 94.1 78.3 57.1 19.2 0
Model 1542A-SP
5 PSI 10 PSI 15 PSI 20 PSI 25 PSI 30 PSI 35 PSI 40 PSI 45 PSI 50 PSI
GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM
259 251.6 233.7 213.6 190.9 162.2 135.8 99.3 56.1 8.7
5 PSI 10 PSI 15 PSI 20 PSI 25 PSI 30 PSI 35 PSI 40 PSI 45 PSI 50 PSI
GPM GPM GPM GPM GPM GPM GPM GPM GPM GPM
272 269.8 241 207.6 179.3 140.4 98.1 50.7 5.4 0
Model 1543A-SP
Performance Data
Model 1543A-TSP
Performance Data is based on testing with water. Performance will vary with fluid density and/or viscosity.
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