Problems And Corrective Actions - Pentair IntelliFloXF Installation And User Manual

Problems and Corrective Actions

Problem
Pump failure.
(For alert display
messages, refer to Alerts
and Warnings on page 30).
Reduced capacity and/
or head.
(For alert display
messages, refer to Alerts
and Warnings on page 30).
Pump trips and restarts
constantly.
Possible Cause
Pump will not prime - Air leak in suction.
PRIME ERROR may be displayed.
Pump will not prime - Not enough water.
Pump does not come out of prime.
Pump stainer gasket is clogged.
Pump strainer gasket is defective.
Air pockets or leaks in suction line.
PRIME ERROR may be displayed.
Clogged impeller.
PRIME ERROR may be displayed.
Pump strainer pot clogged.
PRIME ERROR may be displayed.
Air in system.
Suction lift above design limits.
Blocked suction
Blocked discharge
System fl ow too high. System changing fl ow too
quickly. In fl oor cleaning system issues.
Priming not enabled.
Issues related to other equipment, such as
Heat Pumps and Heaters with internal valves
that vibrate.
™
IntelliFloXF and IntelliProXF
Corrective Action
Check suction piping and valve glands on any
suction gate valves. Secure lid on pump strainer pot
and be sure lid gasket is in place. Check
water level to be sure skimmer is not drawing air.
Be sure the suction lines, pump, strainer, and pump
volute are full of water.
Adjust prime sensitivity to a higher setting
(default setting is 1%).
Clean pump strainer pot.
Replace gasket.
Check suction piping and valve glands on any
suction gate valves.
Turn off electrical power to the pump.
Remove the (6) bolts that holds the housing
(strainer pot/volute) to 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 diffuser and o-ring.
2. Remove left hand thread anti-spin bolt and o-ring.
3. Remove, clean and reinstall impeller.
4. Reinstall anti-spin bolt and o-ring.
Reinstall diffuser, and o-ring.
Reinstall motor and seal plate into volute.
Reinstall clamp band around seal plate and volute
and tighten securely.
Clean suction trap
Clean pump strainer pot
Bleed air from fi lter. Be sure air bubbles are not
visible coming into pump pot.
Insert vacuum gauge into pump port connection
port. Confi rm vacuum level is 25 in. mercury (hg)
or less.
Stop pump and clear blockage.
Reduce system fl ow. Change speed. Reduce water
fl ow. In fl oor cleaning systems must be designed
with balanced hydraulic losses on all legs.
Enable priming from the "PRIMING" menu.
Lowering speed below 200 RPM may resolve the
issue or addition of external manual valve controls,
may resolve issue.
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Variable Speed Pump Installation and User's Guide
31