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Pay attention that the electric pump may start without prior notice.
Verify that the safety equipments are always active. Observe all the accident prevention regulations.
Check the current absorbed by the motor and, if necessary, adjust the setting of the thermal relay.
WARNING
Make sure that the level of the liquid is high enough to prevent inlet of air to the pump through the
suction port.
6.4
Distance to wet areas
Risk of electrical shock when pumping near a lake, beaches, jetties, beaches or similar wet areas. There
must be a safety distance of at least 20 meters between the person and the electric pump if the person is
in contact with the pumped liquid.
Do not use the electric pump for swimming pools or fountains.
7.
Maintenance, service and spare parts
Before performing any maintenance operations on the electric pump, make sure that the motor is
voltage-free.
Maintenance operations must be performed by skilled, qualified and authorized personnel only. Use
suitable equipment and protection devices. Observe the accident prevention regulations in force. If you
need to drain the pump, make sure that the drained liquid does not cause damage or injuries.
Wait for all the components to cool down before touching it.
During maintaining and before reassembly, always remember to clean carefully all the components, in particular O-rings seats,
and to replace all the O-rings, the gaskets and the sealing faces of the seals.
7.1
Routine maintenance
The pump requires a few simple routine maintenance tasks to be performed on a regular basis.
Frequency*
Within the first year of operation
At least once a year for normal applications and operation in
liquids with temperature < 40°C.
At least once every 3 years for normal applications and
operation in liquids with temperature < 40°C.
*
more frequent operations may be necessary if the electric pump is used in extreme conditions, like for example pumping
abrasive or corrosives solids, or liquids with temperature > 40°C.
7.1.1
Initial and periodical inspections
Component to be inspected
Electric cable
Electrical connections
Electrical cabinets
Impeller
Stator casing*
Insulation
Terminal board box
Lifting device
Lifting handle
O-rings
Personal safety devices
Rotation direction
Oil housing
Terminal board / closed end splice
Voltage and amperage
*
regardless of the individual application, the inspection chamber should be inspected at least with the same frequency than
the intervals for normal applications and conditions with liquids having temperature < 40°C.
26
Operation
Initial inspection.
Ask our Sales and Service Department for a check of the
electric pump conditions to determine the frequency of
maintenance inspections.
Periodical inspection to avoid operation breakdowns and
failures.
Major inspection to ensure a long electric pump operating
lifetime.
Operation
If the outer jacket is damaged, replace the cable
Check that the cables do not have any sharp bends and are not
pinched.
Check that the electrical connections are properly tightened.
Check that they are clean and dry.
Check the impeller clearance. If necessary, adjust the impeller.
Drain all liquid, if present.
Check that the insulation resistance between the ground and the phase
lead is more than 5 M.
Check the resistance between phases.
Check that it is clean and dry.
Check that local safety regulations are followed.
Check the screws. Check the conditions of the handle. Replace if
necessary.
Replace the oil plug O-rings.
Replace the O-rings on the terminal board cover.
Grease the new O-rings.
Check all the protections.
Check the rotation direction.
Fill with new oil, if necessary.
Check that the connections are properly tightened.
Check the values.
Information for maintenance personnel
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