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INTELLIFLO
®
VSF Variable Speed and Flow Pump Installation and User’s GuideINTELLIFLO
®
VSF Variable Speed and Flow Pump Installation and User’s Guide
Problem Possible Cause Corrective Action
Control panel LCD screen
displays sporadically or
flickers on/off.
Loose drive wiring connection. Check the connection between the drive and keypad.
See image on page 3. The drive wiring connection
should be tight.
Mechanical troubles and
noise.
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.
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.
Pump does not respond
to IntelliTouch,
EasyTouch,
SunTouch, IntelliComm
system commands.
Improper automation setup.
Communication network inoperative.
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 IntelliTouch control system.
3. Check that the pump has been assigned a circuit
name on the IntelliTouch 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.
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