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NT 1003-A00 09 18 AZ O e
2. INSTALLATION (continued)
The 3 figures below show the operation clearly.
It is important to control the alignment at every step of
installation in order to ensure that none of these steps
generates stress on the pump unit or the pump itself :
• after fastening on foundations
• after fastening the piping
• after the pump has operated at normal operating
temperature.
REMINDER :
Do not rely on the flexible coupling to compensate for
misalignment.
2.9 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 fundamental checking of the pump must be done
without any product, with the inlet and outlet circuit open
to the air, for example, to avoid any risk of an unexpec-
ted pressure rise. Start the pump empty to check the
correct operation of the connections and check that the
direction of rotation corresponds to installation's inlet
and outlet direction. Follow the instructions below if
necessary to change the direction of rotation.
Three phase motor : switch any two wires or two phases
of the current supply.
Two phase motor : switch the two wires of the same
phase.
Single phase motor : comply with the instructions of the
manual supplied with the motor.
2.10 Diesel engine 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 is now well known.
Nevertheless, we strongly recommend that you carefully
read the technical manuals concerning them.
2.11 Belt drive transmission
The use of belt drive transmission requires usage of an
external bearing support to take the extra load genera-
ted due to the belt tension. Standard bearing supports
from the market place are suitable to do the job.
The bearing support will be place close to the shaft
extremity while saving enough room for the pulley.
The belt tension will be adapted following the common
technical practices. Not following the adapted tension
can break the pump shaft.
The belt drive system must be cover by a guard follo-
wing the up to date standards. That guard being there to
protect people from injury.
WARNING
OPERATION WITHOUT THE SHAFT
PROTECTOR CAN CAUSE SERIOUS
PERSONAL INJURY, MAJOR PROPER-
TY DAMAGE OR DEATH.
Do not operate
without guard
in place.
WARNING
OPERATION WITHOUT THE SHAFT
PROTECTOR CAN CAUSE SERIOUS
PERSONAL INJURY, MAJOR PROPER-
TY DAMAGE OR DEATH.
Do not operate
without guard
in place.
WARNING
DISCONNECT THE ELECTRICITY
SUPPLY BEFORE ANY MAINTENAN-
CE OPERATION.
Dangerous voltage.
Can cause
injury and death.
CAUTION
THE SURFACES CAN BE AT A TEMPE-
RATURE LIABLE TO CAUSE INJURY
OR SEVERE DAMAGE.
Excessive temperature-
can cause injury
or severe damage.
Carry out the control at four points :
at the top ‐ at the bottom ‐ left ‐ right
Correct
Bad alignment
Angular fault
