ALTAMIRA TX Serie Manual De Instalación página 23

9.- Troubleshooting
Fault
a. Supply failure or no power supply
b. Main contacts in motor starter are not making contacto
r the motor coils are defective.
Pump does no run when c. Pump or auxiliary circuits protection fuses blown
the motor starter is
d. Pump or piping system may be obstructed causing a
activated.
jam.
e. Motor may have failed
f. Motor protector or thermal relay has tripped out.
g. Tripping of anti-dry running protection.
a.
b.
Starter overload trips
c.
immediately when the
d.
power is switched on.
e.
f.
g.
a.
The pump starts but, after
limits.
a short time, the termal
b.
protector trips out or the heated area or is exposed to direct sunlight.
fuses blow. c.
a.
b.
The pump starts up but,
specified rate on the pump nameplate.
after a period of time, the
c.
thermal protector trips.
pumping system.
d.
work too hard and overload the motor, causing the motor
to overheat.
a.
b.
by solids in the liquid being pumped.
Pump runs but no water
c.
delivered.
d.
e.
f.
motor)
a.
too low.
The pump capacity
b.
is not constant.
system partly blocked by foreign bodies.
Short circuit.
The system´s general protection cuts in.
The pump rotates in the
a.
wrong direction when switches off.
b.
a.
The frequency of pump
b.
start-up is too high.
surge tank.
a.
b.
Vibration and noise.
properly aligned.
c.
d.
e.
Installation Manual
Probable cause
Overload setting is too low
The cable connection is loose or faulty.
One fuse is blown.
Pum is jammed by an obstruction.
Contacts in overload are faulty.
The motor winding is defective.
Low voltaje (Especially at peak time)
The voltaje is not within the motors operating
The control panel is situated in an excessively
A phase in the power supply is missing.
Worn motor bearings causing motor to overheat.
The pumps delivery rate is higher than the
There are obstructions inside the pump or
Less viscous liquids may cause the motor to
Pump is not primed with liquid.
The pump, suction or discharge pipes are blocked
The foot or check valve is blocked or has failed.
The suction pipe leaks
The air is in the suction pipe or pump.
Motor operating in wrong direction (three-phase
The pump draws in air or the inlet pressure is
The pump or the suction side of the piping
The foot the check valve has failed.
Leakage in the suction pipe.
Leakage in the foot valve, check valve or system.
Ruptured membrane or no air pre-charge in
Cavitation.
Make sure that pump and motor shafts are
Worn motor bearings
Operatin with frequency converter.
Check vibration and noise damping devices.
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Check connections or restart the power supply
Reconnect or replace contacts or magnetic coil.
Replace fuses.
Clean the obstruction and restart pump.
Replace the motor.
Reset the motor or thermal protector.
Check the water level in the tank or the water system
pressure. If everything in order, check the protection device
and its connection cables.
Set the motor starter correctly.
Fasten or replace the cable connection.
Replace fuse and try starting again.
Check and clean obstruction from system.
Replace motor starter contacts.
Replace the motor.
Check the power supply.
Check the operating conditions of the pump.
Protect the control panel from heat sources and from the
sun.
Check the power supply.
Replace motor bearings.
Partially closet he on-off valve located discharge side until
the delivery rate returns to within the specified limits.
Disassemble and clean the pump and piping.
Check the actual power requirements based on the
characteristics of the liquid being pumped, and replace the
motor accordingly.
Fill the pump with the liquid to be pumped.
Clean the pump, suction or discharge pipe.
Replace the foot or check valve.
Repair or replace the suction pipe.
Remove trapped air from system.
Change the direction of rotation of the motor by reversing
motor connections.
Improve the suction condictions.
Clean the pump or suction pipe.
Check electrical system.
Check and replace check valve.
Repair or replace the suction pipe.
Repair or replace the components.
See relevant instructions in surge tank´s manual.
Reduce the required flow or improve the operating conditions
of the pump (suction conditions, head, flow resistance,
liquid temperature, viscosity, etc)
Adjust the pump and/or motor shafts.
Replace the bearings or the motor.
Consult a qualified engineer form the supplier of the
frequency converter.
Replace vibration & noise dampers, if worn.
10
Possible Solution
Vertical Multistage Pumps
23