Make The Electrical Connections; General Precautions - Xylem FLYFT P7900 Installation, Operation And Maintenance Manual

4 Installation
• There is no large amount of unwanted construction material under the pump tube, or at
the pump intake. If unwanted material is present, then there is a risk that it can get
sucked into the pump and cause propeller damage.
• The pump control is set to turn off the pump at or above the minimum operating water
level for this pump installation.
• The submersion depth is maximum 20 m (65 ft).

4.5 Make the electrical connections

4.5.1 General precautions

DANGER: Electrical Hazard
Before starting work on the unit, make sure that the unit and the control panel are isolated
from the power supply and cannot be energized. This applies to the control circuit as well.
WARNING: Electrical Hazard
Risk of electrical shock or burn. A certified electrician must supervise all electrical work.
Comply with all local codes and regulations.
WARNING: Electrical Hazard
There is a risk of electrical shock or explosion if the electrical connections are not correctly
carried out, or if there is fault or damage on the product. Visually inspect equipment for
damaged cables, cracked casings or other signs of damage. Make sure that electrical
connections have been correctly made.
WARNING: Crush Hazard
Risk of automatic restart.
CAUTION: Electrical Hazard
Prevent cables from becoming sharply bent or damaged.
NOTICE:
Leakage into the electrical parts can cause damaged equipment or a blown fuse. Keep the
cable ends dry at all times.
Requirements
These general requirements apply for the electrical installation:
• If the pump will be connected to the public mains, then the supply authority must be
notified before installing the pump. When the pump is connected to the public power
supply, it can cause flickering of incandescent lamps when started.
• The mains voltage and frequency must agree with the specifications on the data plate. If
the pump can be connected to different voltages, then follow the specified voltage on the
yellow sticker close to the cable entry.
• If the operation can be intermittent, such as S3 periodic duty, then the pump must be
supplied with monitoring equipment supporting such operation.
24 P7900 Installation, Operation, and Maintenance Manual