4. Installation requirements
Never stand on the CUE, motor and the pump.
Any installation, maintenance and inspection must be
carried out by qualified, experienced and authorized
persons.
Read the installation and operation instruction and safety
installation and operation instruction of the motor for motor
safety information, if the motor is not a Grundfos motor.
WARNING
Sharp element
Death or serious personal injury
‐ Use safety knives and protective gloves when
unpacking the product.
WARNING
Heavy lifting
Death or serious personal injury
‐ Use proper lifting equipment when handling the
product.
‐ Follow local regulations.
WARNING
Electric shock
Death or serious personal injury
‐ Before starting any work on the product, make sure
that the power supply has been switched off at least
for as long as stated below and that it cannot be
accidentally switched on.
‐ Touching the electrical parts may be fatal, even after
CUE has been switched off.
Voltage Min. waiting time
4 minutes 15 minutes 20 minutes
200-240 V
0.75 - 3.7 kW
(1 - 5 hp)
5.5 - 45 kW
(7.5 - 60 hp)
380-500 V
0.55 - 7.5 kW
(0.75 - 10 hp)
11 - 90 kW
(15 - 125 hp)
110 - 250 kW
(150 - 350 hp)
525-600 V
0.75 - 7.5 kW
(1 - 10 hp)
11 - 90 kW
(15 - 125 hp)
525-690 V
11 - 250 kW
(15 - 350 hp)
DANGER
Intoxication or risk of chemical burn
Death or serious personal injury
‐ The battery can cause severe or fatal injuries in 2
hours or less if it is swallowed or placed inside any
part of the body. In such event, seek medical attention
immediately.
• The replacement or servicing of batteries must be
carried out by a qualified person.
• The battery contained within this product, whether new
or used, is hazardous and is to be kept away from
children.
Safety regulations
DANGER
Magnetic field
Death or serious personal injury
‐ Do not dismantle, assemble or maintain the motor if
you have a pacemaker or any other implanted
electronic device.
‐ Keep the working environment clean, make sure no
magnetized dust exist.
• The OFF button of the operating panel does not disconnect
CUE from the power supply and must therefore not be used as
a safety switch.
• CUE must be earthed correctly and protected against indirect
contact according to local regulations.
• The leakage current to protective earth exceeds 3.5 mA.
• Enclosure class IP20/21 must not be installed freely accessible,
but only in a panel.
• Enclosure class IP54/55 must not be installed outdoors without
additional protection against weather conditions and the sun.
• The STO function does not disconnect CUE from the power
supply and must therefore not be used as a safety switch.
• The STO function does not prevent unwanted movement from
external forces on the motor, for example, back pressure, and
the motor shaft must be covered.
Always observe local regulations concerning cable cross-section,
short-circuit protection and overcurrent protection.
The general safety necessitates special considerations as to these
aspects:
• fuses and switches for overcurrent and short-circuit protection
• selection of cables (mains current, motor, load distribution and
relay)
• net configuration (IT, TN, earthing)
• safety on connecting inputs and outputs (PELV).
Related information
6. Electrical connection
9. Servicing the product
4.1 IT mains
Do not connect 380-500 V CUE frequency converters to
mains supplies with a voltage between phase and
protective earth of more than 440 V.
In connection with IT mains and earthed delta mains, the mains
voltage may exceed 440 V between phase and protective earth.
4.2 Aggressive environment
CUE must not be installed in an environment where the air
contains liquids, particles or gases which may affect and
damage the electronic components.
CUE contains a large number of mechanical and electronic
components. They are all vulnerable to environmental impact.
4.3
Reduced performance under certain condition
CUE reduces its performance under the condition of low air
pressure (at high altitude).
The required measures are described in the next section.
4.3.1
Reduction at low air pressure
At altitudes above 2000 m (6600 ft), the PELV
requirements cannot be met.
PELV = Protective Extra Low Voltage.
7
English (US)
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