Installation and operating instructions Wilo
–
SCPV pumps
13
The rotating element consists of a shaft on to
which are keyed the two double entry
impellers. Renewable shaft sleeves, which abut
the impeller hub, protect the shaft from
corrosion and erosion. The impellers are locked
by sleeve nuts, which have their threads
handed to prevent them from unscrewing by
the rotation of the shaft.
The rotating element is carried by ball bearings
at driving end and Finocot
‘
B
’
bush bearing at
non-driving i.e. bottom end.
The Bearings are located in housings, which is
attached to the end of the pump casing.
Lubrication of the bearings is by grease
contained within the housing. The rotating
element is axially located by means of the ball
bearing at driving end, which also takes
residual axial thrust during operation along
with dead weight of rotor.
The motor stool is mounted on pump/Vert.
frame and goal post(if applicable) and fixed by
bolted flange. The flanged motor is connected
to top flange of motor stool.
For sealing pumps are equipped with either
Gland pack or Mechanical seal.
7 Installation and electrical connection
(Motor / pump coupling system)
DANGER! Risk of getting crushed!
The installation or removal of the product
must not be performed by one person alone.
Measures should be taken to bar persons
from standing beneath a suspended load.
Further- more, it is also prohibited to move
suspended loads over exposed workplaces
where people are present. The fastening
devices should be adapted to the conditions
at hand (weather, hooking system, load,
etc.) Use suitable fastening devices to
handle the weight of the product.
WARNING! Danger of personal injury!
The installation and electrical connection
should be performed only by qualified
personnel in compliance with local
regulations. This section provides
instructions on the recommended methods
of installing pumping sets on to con- crete
foundations. Careful attention must be paid
to the customer and contractor
’
s installa-
tion drawings during the installation
procedures to ensure that the pumping set
is accurately positioned on the correct
datum levels.
The
existing
accident
prevention
regulations must be observed.
WARNING! Danger of electric shock!
Any hazards from electrical current should be
ruled out.
Any instructions from local or general directives
[e.g. IEC, VDE etc.] or directives of the local elec-
tricity supply companies must be observed.
7.1 Installation of bare shaft pump
It is strongly recommended to use component
such as coupling, guards, motors, base plates
supplied by Wilo to install a bare shaft pump on a
base plate.
7.1.1 Electrical motor selection
Select an electrical motor with sufficient power
margin regarding the motor rating. The table
bellow will guide you in this selection.
