Pentair IntelliFlo Installation And User Manual page 28

24
Troubleshooting Chart,
Problem
Electrical problem.
(For alert display
messages, refer to Alerts
and Warning on page 22).
Control panel LCD screen
displays sporadically or
flickers on/off.
Mechanical troubles and
noise.
Pump does not respond
to automation system
commands.
INTELLIFLO Variable Speed Pump Installation and User's Guide
®
(continued)
Possible Cause
Could appear as a "Low Voltage" alarm.
Could appear as "Over Heat" alert.
Loose drive wiring connection.
The pump motor is running but with loud noise.
Foreign matter (gravel, metal, etc.) in
pump impeller.
Cavitation.
Speaking noise, especially evident at pump start-
up or slow down.
Improper automation setup.
Communication network inoperative.
Corrective Action
Check voltage at motor terminals and at panel 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.
Tighten any loose wiring connections.
Motor runs too hot. Turn power to motor off.
Check for proper voltage.
Check for proper impeller or impeller rubbing.
Check the connection between the drive and keypad.
See image on page 3. The drive wiring connection
should be tight.
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.
Disassemble pump, clean impeller, follow pump ser-
vice instructions for reassembly.
Improve suction conditions.
Increase pipe size.
Decrease number of fittings.
Increase discharge pressure.
Inspect motor slinger and motor shaft seal behind
the slinger (NOT the pump's mechanical seal). Apply
lubrication to the motor shaft rubber seals.
1. Be sure that the communication cable is
connected at both ends.
2. Check that the pump local address matches with
the address used in the automation control system.
3. Check that the pump has been assigned a circuit
name on the automation control system.
4. Ensure that the pump display says
"DISPLAY NOT ACTIVE".
A defective device on the network can inhibit the
proper operation of other network device. Devices
should be disconnected sequentially until the
network starts working.