1.6 ELECTRICAL CONNECTIONS
Electrical connections must be made exclusively by qualified personnel in accordance
with the
instructions from the manufacturer of the motor or other electrical components and
must adhere to the local National Electrical Code.
It is recommended that electric motors and eventual connected accessories be protected against
overloading by means of circuit breakers and/or fuses.
Circuit breakers and fuses must be sized in accordance with the full load amperage appearing on
the motor nameplate.
It is advisable to have an electrical switch near the pump for emergency situations. Prior to
connecting the electrical wiring, turn the pump shaft by hand to make sure that it rotates freely.
Connect the electrical wiring in accordance with local electrical codes and be sure to ground the
motor.
Motor connection should be as indicated on the motor tag (frequency, voltage, poles and max
consumption) and as discussed in the motor instruction manual.
It is recommended that motors 7.5 kW be wired for Star-Delta start-up, to avoid electrical overloads
to the motor and mechanical overloads to the pump.
Be sure to replace all safety guards before switching on the electrical power.
If possible check the direction of rotation before the motor is coupled to the pump but protect the
motor shaft to prevent any accidents. When this is not possible briefly jog the pump to check its
direction of rotation (see arrow on pump for correct rotation). If the direction must be changed two
of the three electrical wire leads must be alternated with each other (at the terminal box or at the
motor starter).
Please be aware that rotation in the wrong direction and/or pump running dry may cause severe
pump damage.
Electrical instrumentation such as solenoid valves, level switches, temperature switches, flow
switches, etc. which are supplied with the pump or systems must be connected and handled in
accordance with the instructions supplied by their respective manufacturers.
1.7 STARTING
Check the shaft turns freely (an hexagonal key or a screwdriver
should be into the slot of the shaft).
FILL THE BODY PUMP THROUGH THE DELIVERY
HOLE (Part N. 13) TO PRIME THE PUMP.
NEVER RUN PUMP DRY
This is an important operation that has to done at first
starting and each time the body pump is empty to avoid
damage.
Start the pump with the delivery sluice valve closed and that one
open in suction, then, open slowly the delivery sluice valve.
Check the rotation sense of the motor. Make sure that the motor
is working in its performance data field and that the current
absorbed recommended on the plate is not exceeded.
