Wilo Rexa FIT Serie Manual Del Usuario página 29

These include the German accident prevention regula-
tions, VDE regulations, German Equipment Safety Law
etc.
2.4 CE marking
The CE marking is found either on the type plate or
near the type plate. The type plate is attached to the
motor casing or to the frame.
2.5 Electrical work
Our electrical products are operated with alternating or
three-phase current. The local regulations (e.g. VDE
0100) must be observed. The chapter entitled "Electri-
cal connection" must be observed when connecting
the product. The technical specifications must be
strictly adhered to!
If the product has been switched off by a protec-
tive device, it must not be switched on again until
the error has been corrected.
Beware of electrical current!
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 damages both the
product and cable. Never immerse cable ends in
the pumped liquid or other liquids. Unused wires
must be insulated!
2.6 Electrical connection
The operator is required to know where the machine is
supplied with current and how to cut off the supply.
The installation of an earth leakage circuit breaker
(RCD) is recommended.
The governing national directives, standards and regu-
lations as well as the requirements of the local public
utility company must be observed.
When the product is connected to the electrical con-
trol panel, particularly when electronic devices such as
soft startup control or frequency drives are used, the
relay manufacturer's specifications must be followed to
comply with the electromagnetic compatibility (EMC)
requirements. Special separate shielding measures (e.g.
shielded cables, filters, etc.) may be necessary for the
power supply and control cables.
The connections may only be made if the relays
meet the harmonized EU standards. Mobile radio
equipment may cause malfunctions in the system.
Beware of electromagnetic radiation!
Electromagnetic radiation can pose a fatal risk for
people with pacemakers. Put up appropriate
signs and make sure anyone affected is aware of
the danger!
2.7 Ground connection
Our products (unit including protective devices and
control station, auxiliary hoisting gear) must always be
Installation and operating instructions Wilo-Rexa FIT...
grounded. If there is a possibility that people can come
into contact with the product and the pumped liquid
(e.g. at construction sites), the connection must be
additionally equipped with an earth leakage protection
device.
The pump units are submersible and conform to
protection class IP 68 in terms of the applicable
standards.
The protection class of the installed switching
devices can be found on the device housing and
corresponding operation manual.
2.8 Safety and monitoring devices
Our products can be equipped with mechanical (e.g.
intake strainer) and/or electrical (e.g., thermo sensors,
moisture sensors, etc.) safety and monitoring devices.
These devices must be attached or connected.
Electrical devices such as thermo sensors, float
switches, etc. must be connected and checked by an
electrician for proper functioning before start-up.
Please note that certain devices require a relay to func-
tion properly, e.g. PTC thermistor and PT100 sensor.
This relay can be obtained from the manufacturer or an
electrical supply dealer.
Personnel must be informed of the installations
used and how they work.
Caution!
Never operate the product if the safety and
monitoring devices have been removed or dam-
aged, or if they do not work.
2.9 Safety rules during operation
When operating the product, always follow the locally
applicable laws and regulations for work safety, acci-
dent prevention and handling electrical machinery. To
help to ensure safe working practice, the responsibili-
ties of employees should be clearly set out by the
owner. All personnel are responsible for ensuring that
regulations are observed.
The product has moving parts. During operation, these
parts turn to pump the fluid. Certain materials in the
pumped fluid can cause very sharp edges to form on
the moving parts.
Beware of rotating parts!
The rotating parts can crush and sever limbs.
Never reach into the hydraulics or the moving
parts during operation.
Before performing maintenance or repairs, switch
off the product, disconnect from the mains and
secure against being switched on again without
permission. Let the moving parts come to a stop!
2.10 Pumped liquids
Each pumped liquid differs in respect of composition,
corrosiveness, abrasiveness, dry matter content and in
many other aspects. Generally, our products can be
used for many applications. Please note that if require-
ments change (density, viscosity or general composi-
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