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S U G G E S T E D O P E R A T I O N & M A I N T E N A N C E
OPERATION: Pump discharge rate can be controlled by
modifying the pump impeller, changing to a different motor
power rating or through a "turndown" of the motor RPMs.
Pump discharge rate can also be controlled by throttling
the pump discharge by partially closing a valve in the
discharge line of the pump. Do not close the discharge
valve all the way as this may cause a heat buildup in the
liquid end of the pump and damage the pump internals.
MAINTENANCE AND INSPECTIONS: Since each application
is unique, maintenance schedules may be different for
every pump. Frequency of use, line pressure, viscosity and
abrasiveness of process fluid all affect the parts life of a
T R O U B L E S H O O T I N G
Motor will not rotate when system is turned on.
1. Ensure that motor is connected to power supply and
that supply switch is installed properly.
2. Inspect motor to ensure that is it is operating condition
and does not require service.
3. Ensure that the power lines have been properly
connected for the supply voltage and Hz.
4. Ensure that no debris is lodged within the motor assembly.
Motor is turning but no fluid is moving.
1. Check to make sure that all fluid port plugs were
removed before connection to the system.
2. Check alignment of the outer magnet to the inner
magnet to ensure proper engagement.
3. Check positioning of the pump with regard to the source
fluid. Check to make sure that the pump is capable of
drawing in process fluid and readjust pump placement
if necessary.
4. Check to make sure that inlet and outlet isolation and
system valves are in the full open position.
5. Confirm that the pump impeller has been trimmed to the
proper diameter for the viscosity and specific gravity of
the fluid being pumped.
6. Ensure that no debris has been lodged in the pump impeller.
7. Inspect the shaft, bushing and impeller for damage and
alignment.
8. Inspect the pump rotation to insure the pump has been
wired correctly.
9. Recheck the process fluid characteristics for viscosity,
specific gravity, temperature and solids. Check that pump
has not de-coupled due to high specific gravity or viscosity.
Process fluid is leaking from the pump head.
1. Immediately turn off the pump.
2. Inspect the pump housing, o-rings, flanges and impeller
housing for damage or wear. Replace as necessary.
3. Confirm the fasteners have been torqued to the correct
specifications.
T-MAG™ pump. Periodic inspections have been found to
offer the best means for preventing unscheduled pump
downtime. Personnel familiar with the pump's construction
and service should be informed of any abnormalities that
are detected during operation.
RECORDS: When service is required, a record should be
made of all necessary repairs and replacements. Over a
period of time, such records can become a valuable tool
for predicting and preventing future maintenance problems
and unscheduled downtime. In addition, accurate records
make it possible to identify pumps that are poorly suited
to their applications.
4. Confirm that the process fluid is compatible with
the pump liquid end components and make changes as
necessary.
Flow rate is ABOVE the specified flow for the application.
1. Confirm the system total dynamic head conditions have
not changed from the specified values.
2. Confirm the process fluid is the same temperature,
viscosity and specific gravity as the system specified.
3. Confirm that the pump impeller has been trimmed to
the proper dimension as required for the application.
4. Confirm that the pump horsepower meets the system
conditions.
5. Confirm that the Hz rating for the motor is correct (50 Hz
will turn at a slower RPM than 60 Hz)
6. Confirm that the system valves have been positioned
correctly for desired flow conditions.
Flow rate is BELOW the specified flow for the application.
1. Confirm the system total dynamic head conditions have
not changed from the specified values.
2. Confirm the process fluid is the same temperature,
viscosity and specific gravity as the system specified.
3. Confirm that the pump impeller has been trimmed to
the proper dimension as required for the application.
4. Confirm that the pump horsepower meets the system
conditions.
5. Confirm that the Hz rating for the motor is correct (50 Hz
will turn at a slower RPM than 60 Hz)
6. Confirm that the system valves have been positioned
correctly for desired flow conditions.
The pump continually cavitates, causing vibration and/or
pump damage.
1. Inspect the inlet line to ensure it fits within the NPSH
requirements for the specified operating conditions.
2. Confirm that the process fluid viscosity matches the
process specifications.
3. Ensure that the pump impeller has been trimmed to the
correct diameter for the process specifications.
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