Pentair IntelliFlo VF Installation And User Manual page 63

Troubleshooting Problems (Continued)
Problem
Inadequate circulation.
(For IntelliFlo alert display
messages, refer to Alerts
and Warning on page 59).
Electrical problem.
(For IntelliFlo alert display
messages, refer to Alerts
and Warning on page 59).
Mechanical Troubles and
Noise.
Possible Cause
Pump overcurrent.
Pump may be running too slowly.
Pump may be too hot.
The pump motor is running but with loud noise.
Cavitation.
Corrective Action
Check trap basket; if plugged, turn
pump off and clean basket. Suction/
discharge piping is too small. Check
and clean pool filter.
Check voltage at motor terminals and
at meter while pump is running. If
low, see wiring instructions or consult
power company.
Check for loose connections.
Check line voltage; if less than 90%
or more than 110% of rated voltage
consult a licensed electrician.
Increase ventilation.
Reduce ambient temperature. Tight-
en any loose wiring connections.
Motor internal terminal overload
protector is open.
Motor runs too hot. Turn power to
motor off.
Check for proper voltage.
Check for proper impeller or impeller
rubbing.
If suction and discharge piping are
not adequately supported, pump
assembly will be strained. Do not
mount pump on a wooden platform!
Securely mount on concrete platform
for quietest performance. Foreign
matter (gravel, metal, etc.) in pump
impeller. Disassemble pump, clean
impeller, follow pump service instruc-
tions for reassembly.
Improve suction conditions. Increase
pipe size. Decrease number of fit-
tings. Increase discharge pressure.
IntelliFlo VF Installation and User's Guide
61