4.2 Make the electrical connections
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 electrical installation:
• The supply authority must be notified before installing the pump if it will be
connected to the public mains. When the pump is connected to the public power
supply, it may 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 the connected voltage is
specified by a yellow sticker close to the cable entry.
• The fuses and circuit breakers must have the proper rating, and the pump overload
protection (motor protection breaker) must be connected and set to the rated current
according to the data plate and if applicable the cable chart. The starting current in
direct-on-line start can be up to six times higher than the rated current.
• The fuse rating and the cables must be in accordance with the local rules and
regulations.
• If intermittent operation is prescribed, then the pump must be provided with
monitoring equipment supporting such operation.
• The thermal contacts/thermistors must be in use.
Cables
These are the requirements to follow when you install cables:
4 Installation
Flygt 2190, 2201 Installation, Operation, and Maintenance Manual 17
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