Trillium FLOWAY - Troubleshooting

55 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
55 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
55 | IM-112 DECEMBER 2019
Vertical Turbine Pumps
2001299 - VTP- IOM
Vertical Turbine Pumps
Troubleshooting
Document Name: 2001299-VTP-IOM-EN Page 55 of 67
Revision 3 Copyright © 2014, Weir Floway, Inc. All Rights Reserved. Issue Date: December 12, 2014
10 Troubleshooting
Refer to Table 10-1 for troubleshooting instructions.
Condition Probable Cause Remedy
Pump not running. 1 Motor overload protection contacts open.
a Incorrect control box.
b Incorrect connections.
c Faulty overloads.
d Low Voltage.
e Ambient temperature of control box or
starter too high.
6 Blown fuse, broken or loose electric
connections.
7 Defective Motor.
8 Faulty control equipment.
9 Faulty switch.
10Pump binding.
1 Do the following:
a Check nameplate for HP and
voltage.
b Check wiring diagram furnished with
starter.
c Replace.
d Check voltage at pump side of
control box.
e Use ambient compensated relays.
6 Check fuses, relays or heater elements
for correct size and all electrical
connection.
7 Repair or replace.
8 Check all circuits and repair.
9 Repair or replace.
10Pull master switch, rotate pump by hand
to check. Check impeller adjustment or
disassemble the unit to determine the
cause.
Pump is running but
no fluid delivered.
1 Line check valve backward.
2 Line check valve stuck.
3 Unit running backwards.
4 Lift too high for pump.
5 Pump not submerged.
6 Excessive amounts of air or gas.
7 Intake strainer or impeller plugged, or pump
in mud or sand.
8 Impeller(s) loose on shaft.
1 Reverse check valve.
2 Free the valve.
3 Refer to
“Hollow Shaft Driver Installation”
on page 24, step 12.
4 Check with performance curve.
5 Lower pump if possible or add fluid to
system.
6 Correct conditions.
7 Start & stop pump several times or use
line pressure if available to back flush.
Pull pump and clean.
8 Pull unit and repair.
Reduced capacity. 1 Bypass open.
2 Lift too high for pump.
3 Motor not coming up to speed.
4 Strainer or impellers partly plugged.
5 Scaled or corroded discharge pipe or leaks
anywhere in system.
6 Excessive amounts of air or gas.
7 Excess wear due to abrasives.
8 Impellers not properly adjusted.
9 Impeller(s) loose on shaft.
1 Check bypass valving.
2 Check performance curve.
3 Check voltage while unit is running.
4 Start & stop pump several times or use
line pressure if available to back flush.
Pull pump and clean.
5 Replace pipe or repair leaks.
6 Suitable conditions.
7 Replace worn parts.
8 Refer to
“Impeller Adjustment - General”
on page 29.
9 Pull the unit and repair.
Table 10-1: Troubleshooting Chart