General Intelliflo Troubleshooting Problems - Pentair INTELLIFLO WHISPERFLOVSD Installation Manual

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General IntelliFlo
Use the following general troubleshooting information to resolve possible problems with your IntelliFlo
Note: Turn off power to unit prior to attempting service or repair.
Problem
Pump failure.
(For IntelliFlo alert display
®
messages, refer to Alerts and
Warnings on page 37).
Reduced capacity and/or
head.
(For IntelliFlo alert display
®
messages, refer to Alerts and
Warnings on page 37).
Pump trips and restarts
constantly.
Troubleshooting Problems
®
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 flow too high. System changing flow too quickly. In
floor cleaning system issues.
Priming not enabled.
Issues related to other equipment, such as Heat Pumps and
Heaters with internal valves that vibrate.
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
Bleed air from filter. Ensure that air bubbles are not
visible coming into pump pot.
Insert vacuum gauge into pump port connection port.
Confirm vacuum level is 25 in. mercury (hg) or less.
Stop pump and clear blockage.
Reduce system flow. Change speed. Reduce water
flow. In floor 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.
pump.
®