Pentair Hypro 9915-DP803 - Troubleshooting

38
L-1600 (04/01/21)
TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
The pump does not draw water
One or more valves are seating improperly.
Remove valve and check for debris.
Remove any debris found. Examine the valve seating and
clean them.
Suction line is plugged or collapsed.
Clogged strainer
Examine and clean the suction line.
Clean the strainer.
The liquid ow is irregular.
The pump is noisy.
The pressure gauge uctuates.
The charge in the pulsation dampener is
incorrect.
Check the pressure in the pulsation dampener.
(It should be 20% of your spray pressure)
One or more valves are seating improperly.
Remove valve and check for debris.
Remove any debris found.
Examine the valve seating and clean them.
Pump is sucking air, or air hasn’t been
evacuated completely.
Start the pump with the gun open to evacuate the air.
Output drops and the pump is noisy The oil level is too low. Add oil to the correct level (halfway up the sight tube).
Oil comes out of the discharge port or oil
is a milky color.
One or more diaphragms have split.
Remove the manifold and heads. Drain the oil and clean the
crankcase of water. Replace the diaphragms, heads, and
manifold. Rell with Hypro Oil (part number 2160-0038).
Oil comes out from the oil seal of the
shaft.
Damaged or worn oil seal. Replace the oil seal.
Too much oil into the crankcase Check the oil level and reset the correct one.
The pump fails to prime
Air sucked Check the suction circuit
Pressure adjusting valve in the “Press”
position
Set the regulating valve in the “bypass” position.
The pump doesn’t reach the required
pressure
Valves have worn seals. Check valves.
Suction hose with air pockets
or irregular elbows.
Check hose.
Clogged stainer Clean strainer
R.P.M. too slow.
Make sure that the pump RPM correspond to the value
indicated on the label