
2.12 Electric motors
Check that the supply voltage matches the indications
on the motor rating plate.
Comply with the wiring diagram, make sure the wires are
rated for the power and take care with the contacts,
which must be thoroughly tightened. The motors must
be protected by appropriate circuit breakers and fuses.
Connect the regulatory ground connections.
Check the direction of rotation :
This check should be done with no liquid being pumped,
and both the inlet and discharge circuits vented to avoid
generating unexpected pressure (on the inlet side, for
example). This will avoid damaging either the pump or
the system.
Start the pump empty to check that the connections are
good and that the direction of rotation corresponds to the
system intake and discharge directions. If it is necessary
to reverse the direction of rotation, follow the instructions
below :
Three-phase motor : switch any 2 current input wires.
Bi-phase motor : switch two same phase wires.
Single-phase motor : follow the instructions on the notice
supplied with the motor.
2.13 Diesel engines drive
Do not forget that these engines are not reversible. It is
therefore vital to carefully check the inlet and outlet sides
of the pump before connecting the pump unit to the piping.
The use of diesel engines drive is now well known.
Nevertheless, we strongly recommend that you carefully
read the technical manuals concerning them.
WARNING
DISCONNECT THE ELECTRICITY SUPPLY
BEFORE ANY MAINTENANCE OPERATION.
Dangerous voltage.
Can cause
injury and death
.
CAUTION
THE SURFACES CAN BE AT A TEMPERA-
TURE LIABLE TO CAUSE INJURY OR
SEVERE DAMAGE.
Excessive temperature
can cause injury or
severe damage.
WARNING
TAKE ALL NECESSARY MEASURES TO
RENDER ANY START-UP, EVEN ACCI-
DENTAL, OF THE PUMP DURING THE
WORK IMPOSSIBLE.
Any unforeseen start-up
can cause serious
injuries or important
material damages.
WARNING
PUMPS OPERATING AGAINST A CLO-
SED VALVE CAN CAUSE SYSTEM
FAILURE, PERSONAL INJURY AND
PROPERTY DAMAGE.
Hazardous pressure
can cause
personal injury
or property damage.
WARNING
IF OPERATED WITHOUT THE SHAFT
GUARD, THERE IS CONSIDERABLE RISK
OF SEVERE PERSONAL INJURY, SIGNIFI-
CANT PROPERTY DAMAGE OR EVEN
DEATH.
Do not operate
without guard
in place.
16/45
NT 1008-D00 08 18 P BI series e
2. INSTALLATION (continued)