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19
Maintenance
•
Adequate and periodic maintenance of the equipment is essential to obtain a good level of performance and an extension of
the service life.
•
For the motor, the required service intervals and the type of maintenance to be performed are described in the MAINTENANCE
SCHEDULE described in the respective motor manual provided by the manufacturer.
•
It is recommended that the pump be overhauled at the factory EVERY 3000 OPERATING HOURS OR ONE YEAR, whichever
comes first.
•
If the pump has been used with water containing suspended solids, sludge, etc., it should be cleaned with clean water after
the work is completed, in order to reduce corrosion, erosion and remove sediments.
•
ALWAYS USE ORIGINAL SPARE PARTS for maintenance or repair. The use of replacement parts that do not have the same
quality can damage and shorten the useful life of the equipment.
7.2
Engine Lubrication
Motor lubrication should be carried out according to the indications given by the motor manufacturer. However, consider that
some motor manufacturers for their standard lines, contemplate that motors of less than 50 HP do not need relubrication since
these motors have sealed bearings, therefore only motors of more than 50 HP need relubrication.
7.3
Electric Motor Drive
Each electric motor has a degree of protection that must satisfy each particular situation; in order to carry out a program of
revision and cleaning of its internal components, it is advisable to carry out voltage and amperage controls on each phase
separately.
7.4
Mechanical Seal
The mechanical seals used as standard in the Monobloc series pumps are of the unbalanced internal monospring type. This
spring produces the minimum contact force between the sealing surfaces of the rotating and stationary units. The stationary
unit is mounted on the junction body in an elastomer cup. Its design allows the sealing surfaces to remain in contact, even if
natural wear or axial and radial oscillations occur in the rotation of the unit. These seals consist of the following elements:
Maintenance
7.1
General Considerations
!
CAUTION
Ceramics
Coal
Buna
Buna
AISI 302
AISI 302
A
B
C
D
E
F
Mono-Spring, Unbalanced
Basic
Tabl
e
Nº 5
Figur
e
15
Stationary Ring
Contact Face
Elastomeric Semi Bellows
Cup Type Seat
Spring
Chassis
Ceramics
Coal
Vitón
Vitón
AISI 302
AISI 302
Mechanical Seal
PAC-SEAL Type 21 Seal
Alternative