ITT Industries Flygt 3067, Установка, уход и техническое обслуживание

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8
ELECTRICAL CONNECTIONS
Remember that the starting current in direct on-line
starting can be up to six times higher than the rated
current. Make sure that the fuses or circuit breakers
are of the proper rating.
The Data plate gives rated current. Fuse rating and
cable shall be selected in accordance with local rules
and regulations. Note that with long cables, the
voltage drop in the cable must be taken into consider-
ation, since the motor’s rated voltage is the voltage
that is measured at the terminal board in the pump.
The overload protection (motor protection breaker) for
direct on-line starting shall be set to the motor rated
current as given on the data plate.
Check the phase sequence in the mains with the
phase sequence indicator.
If intermittent operation is prescribed (see Data Plate),
the pump shall be provided with control equipment
that provides such operation.
Single phase operation
The Flygt single phase pumps must be equipped with
a starter which has start and run capacitors.
A special Flygt designed starter is required for the
operation of single phase 3067 pumps. The connec-
tion of the motor cable to the starter is shown in the
wiring diagram.
NOTE! It is not possible to change the direction of
rotation of a single phase pump by changing the cable
conductors on the starter. Please contact your nearest
Flygt representative.
Monitoring equipment
The FLS sensor consists of a small float switch for
sensing water in the stator housing. Its design makes
it suitable for pumps in vertical installations.
The FLS sensor is installed in the bottom of the stator
housing.
The sensor is not applicable to Ex-approved pumps.
Check:
— signals and tripping function.
— that relays, lamps, fuses and connections are
intact.
Replace defective equipment.