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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 concrete
foundations. Careful attention must be paid to the
customer and contractor's installation 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 electricity 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
Mather and Platt to install a bare shaft pump on a base plate.
It is mandatory that those components should be CE
certified and the coupling guard must comply with the
regulation EN ISO 14120:2015.
7.1.1 Electrical motor selection
Select an electrical motor with sufficient power margin
regarding the motor rating. The table below will guide you in
this selection.
Shaft power
Recommended power
margin
Example:
• Duty point: 100 m3/h – 35 m – pump efficiency 78 %
• Pump shaft power: 12.5 kW
• Electrical motor rating (including margin):
12.5 * 1.15 = 14.3 kW
• IEC motor power rating available: 15 kW
• Use a foot mounted motor B3 (IM 1001) which comply with
the IEC34-1 standard.
Installation and operating instructions WILO Mather and Platt –MISO / PISO Pumps
P
≤ 4 KW
4 kW < P
2
25 %
20 %
7.1.2 Coupling selection
Use a semi-flexible coupling to link the pump to the driver.
Select the size of the coupling in accordance with the
recommendation of the coupling manufacturer. Strictly
follow the coupling manufacturer's instructions for the
fitting of the coupling between the pump and the motor.
(The coupling must comply with the standard EN349).
The alignment of the pumps and the motor must be
checked after the installation of the pump set on its
foundation and when the piping is connected. In addition,
an alignment control must take place when the system
works at its nominal temperature. The coupling guard must
comply with the EN ISO 14120:2015 standard in order to
avoid any contact with rotating parts during operations.
7.1.3 Selection of a base plate
Select a base plate in accordance with the local regulations,
sufficiently large and strong to support the pump and
motor.
7.1.4 Pump set assembling
Fix the pump and motor equipped with their half coupling
on the base plate and make the alignment of those
elements. It is recommended to fit the coupling guard
supplied as accessories by WILO Mather and Platt.
Note:
If coupling guard is supplied loose, then kindly drill and fit
it on the base plate at proper location.
And if pump is supplied with coupling and motor mounted
on the base plate, please ensure proper alignment of pump
motor and coupling.
≤ 10 kW
10 kW < P
≤ 40 kW
2
2
15 %
40 kW ≤ P
2
10 %
14
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