Danfoss iSave 50, Руководство по эксплуатации

Страница: 33 / 92

Data sheet | iSave 50 and iSave 70
33
180R9357 | AQ265943679828en-00100
2
IOM iSave 50 - 70 | 0
3
.202
3
High quality water extends the service life of the
whole system.
Water to the iSave must be filtered to 3 μm
nominal, using melt-blown depth filter with
good end sealings. Consult Danfoss for correct
choice of filter.
It is important with selection of a proper filter
and filter housing to ensure good cartridge end
sealing.
If there is a high risk of water by-pass it is
recommended to use a second stage filter
solution.
As the various filters on the market differ greatly,
Danfoss High Pressure Pumps recommends
using cartridges with consistent, reliable
performance and high efficiency and where
fibres are blown continuously onto a central
support core. High Pressure Pumps does not
recommend cartridges requiring any type of
binders or resins.
Filters can be purchased from Danfoss
High Pressure Pumps. For more information on
the importance of proper filtration, please
consult our publication “Filtration” (code number
521B1009), which also will provide you with an
explanation of filtration definitions and a
guidance on how to select the right filter.
Since the iSave is mounted on a bell housing and
electric motor, the noise level should be
determined for a complete system. To minimize
vibrations and noise throughout the system, it is
improtant that a horizontal iSave unit is mounted
correctly on a frame with dampeners.
Rigid designs with metal pipes cause vibration
and noise. It is therefore recommended to use
high-pressure flexible hoses between the hard
piping in the RO-plant and the iSave or to used
multiple connections with Victaulic clamps
where possible.
The noise level is influenced by:
Speed:
• High rpm makes more fluid/structure-borne
pulsations/vibrations than low rpm due to
higher frequency.
Pressure:
• High pressure makes more noise than low
pressure.
Mounting:
• Rigid mounting makes more noise than
flexible mounting due to structure-borne
vibrations.
Connections to iSave:
• Pipes connected directly to the iSave make
more noise than flexible hoses due to
structure-borne vibrations.
• Variable frequency drives (VFD):
Motors regulated by VFDs can increase noise
level if the VFD does not have the right
settings.
A: Flexible coupling
B: Bell housing
C: Motor shaft
min. 3 - 5 mm air space
A B C
See example below on how to mount the pump
and connect it to an electrical motor.
Note: Any axial and radial load on the shaft
must be avoided.
7.4 Filtration
7.5 Noise
7.3 Connection to inlet or discharge ports:
• When using hard piping, it is important to
follow the Guideline 180R9367 - Pipe
connection.
• When using flexible hoses, it is recommened
to use Hose Whip Restraint. Also follow the
guideline 180R9084 - Right and Wrong Hose
assembly.