Electrical Work; Safety And Monitoring Equipment; Conduct During Operation - Wilo -Sub TWU 3-...-HS series Einbau- Und Betriebsanleitung

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• When using mobile equipment for lifting non-
guided loads, take action to prevent tipping,
shifting, sliding, etc.
• Measures should be taken to ensure that no
person is ever directly beneath a suspended
load. Furthermore, it is also prohibited to move
suspended loads over workplaces where people
are present.
• If mobile equipment is used for lifting loads, a
second person should be present to coordinate
the procedure if required (for example, if the
operator's field of vision is blocked).
• The load to be lifted must be transported so that
no-one will be injured if there is a power failure.
Furthermore, if such work is being carried out
outdoors, it must be cancelled if the weather
conditions worsen.
These instructions must be strictly observed.
Non-observance can result in injury or substan-
tial property damage.

2.3 Electrical work

ELECTRICAL hazard!
Incorrectly performed electrical work can
result in fatal injury! This work may only be
carried out by a qualified electrician.
BEWARE of moisture!
Moisture penetrating the cable will damage
both the pump and the cable. Never immerse
the cable end in fluid and always protect it
from moisture. Unused wires must be insu-
lated!
The pumps are operated with single-phase cur-
rent. The governing national directives, standards
and regulations (e.g. VDE 0100) as well as the
requirements of the local energy supply company
must be observed.
The person operating the pump must know where
it is supplied with power and how to cut off the
supply. It is advisable to install a residual-current
device (RCD). If there is a possibility that people
can come into contact with the pump and the
fluid (for example on construction sites), the
connection must be equipped with an additional
residual-current device (RCD).
The section entitled "Electrical connection" must
be observed when connecting the product. The
technical specifications must be observed strictly!
The pumps must always be grounded.
If the pump has been switched off by a protec-
tive device, it must not be switched on again
until the error has been corrected.
When the pump is connected to the electrical
control panel, particularly when electronic devices
such as soft start-up control or frequency con-
verters are used, the switchgear manufacturer's
specifications must be followed to comply with
32
the electromagnetic compatibility (EMC) require-
ments. Special separate shielding measures (e.g.
shielded cables, filters, etc.) may be necessary for
the power supply and control cables.
NOTE:
Changes to the cable length or the cable
position can have a significant impact on the
dimensions of the EMC interferences.
Use of an interference suppressor is recom-
mended if interferences occur in other devices!
Connections may only be made provided the
switchgear meets the harmonised EU standards.
Mobile radio equipment may cause malfunc-
tions in the system.
BEWARE of electromagnetic radiation!
Electromagnetic radiation can pose a fatal
risk for people with cardiac pacemakers. Put
up appropriate signs and make sure anyone
affected is aware of the danger!

2.4 Safety and monitoring equipment

The pumps are equipped with the following
monitoring devices:
• Undervoltage
• Overvoltage
• Short-circuit
• Temperature (frequency converter)
• Dry run
• Leakage
These functions are implemented by the fre-
quency converter and do not have to be con-
nected separately.
Personnel must be informed about the installed
systems and how they work.

2.5 Conduct during operation

When operating the pump, always follow the
locally applicable laws and regulations for work
safety, accident prevention and handling elec-
trical machinery. To help ensure safe working
practice, the responsibilities of employees should
be clearly specified by the operator. All personnel
are responsible for ensuring that regulations are
observed.
The pump is equipped with moving parts. During
operation, these parts rotate in order to pump the
fluid. Certain substances in the fluid can result in
very sharp edges forming on the moving parts.
WARNING: rotating parts!
The rotating parts can crush and sever limbs.
Never reach into the hydraulics or touch
the rotating parts when the machine is in
operation. Before performing maintenance or
repairs, switch off the pump and wait for the
rotating parts to come to a standstill!
SAFETY
WILO SE 05-2019 DIN A4