Pentair IntelliFlo VF - Pump Failure Troubleshooting; Reduced Capacity Troubleshooting

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IntelliFlo VF Installation and User’s Guide
General IntelliFlo Troubleshooting Problems
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Note: 1)!
Problem Possible Cause Corrective Action
Pump failure.
(For IntelliFlo alert display
messages, refer to Alerts
and Warning on page 59).
Pump will not prime - Air leak in suction.
Pump will not prime - Not enough water.
Pump strainer clogged.
Pump strainer gasket defective.
Check suction piping and valve
glands on any suction gate valves.
Secure lid on pump strainer pot and
make sure lid gasket is in place.
Check water level to make sure skim-
mer is not drawing air.
Ensure that the suction lines, pump,
strainer, and pump volute are full of
water.
Clean pump strainer pot.
Replace gasket.
Reduced capacity and /
or head.
(For IntelliFlo alert display
messages, refer to Alerts
and Warning on page 59).
Air pockets or leaks in suction line.
Clogged impeller.
Pump strainer clogged.
Check suction piping and valve
glands on any suction gate valves.
Turn o electrical power to the pump.
Remove the (6) bolts that holds the
volute to the seal plate.
Slide the motor and seal plate away
from the volute.
Clean debris from impeller. If debris
cannot be removed, complete the
following steps.
1. Remove diuser and O-ring.
2. Remove left hand thread anti-spin
bolt and O-ring.
3. Remove, clean and reinstall impel-
ler.
4. Reinstall anti-spin bolt and O-ring.
Reinstall diuser, and O-ring.
Reinstall motor and seal plate into
volute.
Reinstall (6) bolts around seal plate
and volute and tighten securely.
Clean suction trap.