JABSCO Hy-Line, Инструкция по установке, эксплуатации, техническому обслуживанию и запасным частям

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2.03 DRIVES
Hy~Line
and
Ultima
lobe pumps can be
supplied in bareshaft form i.e. without a
drive motor. Drives must be selected and
supplied to suit each individual application.
The prime mover will most likely be an
electric motor but hydraulic or air motors
may also be suitable.
Pay attention to special motor requirements.
e.g. Explosion/flame proof
Hose proof/splash proof
High ambient temperature
Frequent stop/starts
Materials of construction
Provision of a variable motor speed (e.g. by
frequency inverter), is always recommended
to enable flow to be accurately set, to
accommodate changes in fluid viscosity,
temperature or required flow rate, or to run
pump faster for cleaning. Variable speed
motors must selected to accommodate the
full power and torque requirements
throughout the operating speed range.
Transmission to the pump shaft will normally
be by one of the following:
a) Direct Coupling: If synchronous motor
speeds can be matched to the required
pump speed, the drive can be via a
proprietary flexible shaft coupling. A torque
limiting coupling can protect the pump
against overload.
In all cases the coupling manufacturer’s
limits should be adhered to. See
Performance Data Sheet to calculate
torque. Pump and motor shafts should be
accurately aligned in accordance with the
coupling manufacturer’s instructions.
Ultima
only: When providing drives for
Ultima
pumps it is important to note that the
rotors (57) are retained by tie-rods (26 & 27)
which fit through the hollow shafts (24 & 25).
Careful consideration should be made when
installing drives and couplings so that
access to the tie-rod nuts (87) and tie-rods is
readily available for maintenance purposes.
Use of a spacer type coupling is
recommended.
b) Reduction Gearbox: For pump speeds
lower than synchronous motor speeds, a
proprietary gearbox or geared motor may be
fitted. Variable ratio units are available to
allow pump speed to be adjusted. Coupling
to the pump will be as in (a) above.
2.04 BASEPLATE
The pump and drive will normally be
mounted on a common baseplate or frame
which must be strong and rigid enough to
withstand the drive reaction forces as well
as to support the equipment without
vibration. Ensure base is level - distortion
could affect coupling alignment. Always
check pump to drive alignment after
installation and before starting pump. For
maximum hygiene the pump feet should be
sealed to the base.
Page 6
Hy~Line
and
Ultima
Lobe Pumps
07/03
Maximum shaft radial load stated on
Performance Data Sheet must not be
exceeded.