EBARA GSD Series Translation Of The Original Instructions page 14

THE SYMBOL
WHEELED BIN, PRESENT ON THE LABEL
PLACED ON THE APPLIANCE, INDICATES COM-
PLIANCE OF THIS PRODUCT WITH THE LEGIS-
EN
LATION RELATING TO WASTE ELECTRICAL
AND ELECTRONIC EQUIPMENT. DISCARDING
INTO THE ENVIRONMENT OF THE EQUIPMENT
OR ABUSIVE DISPOSAL OF THE SAME ARE
PUNISHABLE BY LAW.
13. FAULT DIAGNOSIS
In the event of inadequate performance, not envisaged on the data
plate or in cases where problems arise during the start-up and use
of the machine, keep the following table in mind. This can be useful
in finding solutions in the event of malfunctions or operating errors:
Symptoms
The pump The electrical panel does not
does not start work properly
Motor fault
Anomalies in the power supply
Friction on the axis of rotation
Clogged pump and blocked
Priming does Foreign bodies in the base
not take
place
Base valve malfunction
Water leaking from the suc-
The air enters from the suction
line or from the seal
The pump The delivery valve is closed or
does not semi-closed
deliver
The suction height is too high
for the pump
Poor range Incorrect direction of rotation
Low rotation speed
Blockage at the base valve or
in the filter
Clogged pipe
Presence of air inside
Presence of leaks in the de-
livery pipe
Impeller wear
Large pressure drops in the
Very high liquid temperature.
The liquid is volatile
Cavitation
Initially pro- The pump has not been primed
duces flow
but stops
immediately
Presence of air bubbles in the
suction ducts
The suction height is too high
for the pump
Current over- The voltage is low or the phase
load imbalance is large
The flow rate is too low or the
head is too high
Pump for 50Hz is being used
Current over- Presence of foreign bodies
load inside the pump
The mechanical seal has not
been assembled correctly
14
OF THE CROSSED-OUT
PUMP
Causes Measures to be taken
Check all connections and the
power system
See motor table
Check and repair
Arrange for repair at a spe-
cialist workshop
Remove foreign bodies. Free
impeller the impeller
Remove foreign bodies
valve
Replace the valve.
Check the suction line
tion pipe
Check the duct and mechan-
ical seal
Open the valve
Check the project
Correct the electrical con-
nection
Low voltage. Check the
power supply
Remove foreign bodies
Remove foreign bodies
Check and repair the suction
pipe and shaft seal
Check and repair
Check the impeller
Review the project
system
Review the project
Consult the experts
Prime the pump correctly
Air inside Check and repair the suction
pipe and shaft seal
Vent the ducts
Review the project
Check the power supply
Partially close the delivery
valve
Check the plate data
at 60Hz
Remove foreign bodies
Fit it correctly
PUMP
Symptoms Causes
Damaged motor bearings
Friction in the rotation zones.
The shaft is crooked
High density and/or viscosity
of the liquid
Excessive Installation defect
vibration and
Damaged motor bearings
operating
Flow rate too high
noise
Flow rate too low
Impeller locked
Incorrect direction of rotation
Rubbing in the rotation zones.
The shaft is bent
Cavitation
Vibrations in the pipes
Excessive Mechanical seal assembly fault
water leakage
The mechanical seal is
from the shaft
damaged
seal
Delivery overpressure
The shaft is crooked
MOTOR
Symptoms Causes
It does not The winding is broken or has
rotate been cut
Shorted stator
Earthing
The bearings are jammed
The voltage is low
Lack of phases in the power
supply
Abnormal Operation without a phase
noises or
Power surges
excessive
Friction between rotor and
vibrations
stator
Obstructions in the cool-
ing fan
Motor installation fault
Poor Star/Delta switching
Motor over- High voltage fluctuations
heated
Fan blocked
Incorrect voltage
Appearance
of smoke and/
The motor bearings are
or unpleasant
jammed
smell
Shorted stator
Stator grounded
Low rotation Low voltage
speed
Poor Star/Delta switching
Overload
Faulty electrical connection Correct the electrical connection
Measures to be taken
Replace the bearings
Have it repaired at a specialist
workshop
Review the project
Check installation
Replace the bearings
Reduce the opening of the
intake valve
Increase the opening of the
intake valve
Remove foreign bodies
Check and correct the
connection
Have it repaired at a specialist
workshop
Consult the experts
Replace the pipes or install
an inverter
Fit it correctly
Replace the mechanical seal
Review the project
Have it repaired at a specialist
workshop
Measures to be taken
Have it repaired at a specialist
workshop
Have it repaired at a specialist
workshop
Have it repaired at a specialist
workshop
Repair the bearings
Change the rated voltage
Check the power supply
Check the power supply
Correct the voltage fluctuations
Align and/or replace the bearing
Remove foreign bodies
Connect the circuit correctly
Correct the wiring
Correct the voltage fluctuations
Unblock the fan
Change the motor to another
with suitable voltage
Repair the bearings
Have it repaired at a specialist
workshop
Have it repaired at a specialist
workshop
Change the rated voltage
Correct the wiring
Reduce the current