Xylem Flygt 3201, Установка, эксплуатация и обслуживание, Страница: 7 / 48

• Make sure that the cable and the cable entry have not been damaged during shipping.
• Use only the screened cable when using a variable-frequency drive (VFD). The
screened cable is necessary to fulfill European CE requirements. Contact your Xylem
representative and ask your VFD supplier for electrical limitations. See also VFD
recommendation in article no. 893472.
Earthing (grounding)
Observe the following regulations for earthing (grounding) connections.
Earthing (grounding) regulation Comment
All electric equipment must be earthed (grounded). This rule applies to pumps and mixers as well as
monitoring equipment.
The earthing (grounding) conductors must be correctly
connected.
Failure to follow this rule could result in a fatal accident.
The earthing (grounding) conductors should always be
longer than the phase conductor/conductors.
If the motor cable is disconnected by mistake, the
earthing (grounding) conductor needs to be
disconnected last from its terminal. This rule applies to
both ends of the cable.
Risk of electrical shock or burn. You must connect an
additional earth- (ground-) fault protection device to the
earthed (grounded) connectors if persons are likely to
come into physical contact with the pump or pumped
liquids.
—
Precautions before work
Observe these safety precautions before you work with the product or are in connection
with the product:
• Provide a suitable barrier around the work area, for example, a guard rail.
• Make sure that all safety guards are in place and secure.
• Allow all system and pump components to cool before you handle them.
• Make sure that you have a clear path of retreat.
• Make sure that the product cannot roll or fall over and injure people or damage
property.
• Make sure that the lifting equipment is in good condition.
• Use a lifting harness, a safety line, and a breathing device as required.
• Make sure that the product is thoroughly clean.
• Make sure that there are no poisonous gases within the work area.
• Make sure that you have quick access to a first-aid kit.
• Disconnect and lock out power before servicing.
• Check the explosion risk before you weld or use electric hand tools.
Precautions during work
Observe these safety precautions when you work with the product or are in connection
with the product:
• Never work alone.
• Always wear protective clothing and hand protection.
• Stay clear of suspended loads.
• Always lift the product by its lifting device.
• Never lift the product by its motor cable or hose.
• Beware of the risk of a sudden start if the product is used with an automatic level
control.
• Beware of the starting jerk, which can be powerful.
• Rinse the components in water after you disassemble the pump.
Introduction and Safety
Flygt 3201 Installation, Operation, and Maintenance Manual 5