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NT 1004-C00 03 18 SLC12 i - SLC18 i - SLC12 i HT - SLC18 i HT e
2.6.2 ALIGNMENT OF THE MOTOR/PUMP OR
REDUCTION GEAR/PUMP SHAFTS
NEVER START A UNIT IF THE COUPLING ALIGN-
MENT IS INCORRECT. THIS IS A CONDITION OF OUR
GUARANTEE.
REMINDER :
Coupling must never be used to compensate for a misa-
lignment.
To control the alignment between the coupling and the
shaft, use a straight-edge for concentricity and thickness
gauges for angular misalignment (see instructions of the
coupling for authorised values).
The 3 figures below show in detail the operation and the
possible defects :
Controlling the alignment at each stage of the installa-
tion is important to be sure that none of these stages
have generated stresses on the unit or the pump :
• after fastening on the foundations.
• after fastening the pipes.
• after the pump has been operated at the normal
operating temperature.
Where the pumps are supplied assembled as a unit, the
motor and pump shafts have been perfectly aligned in
the factory before delivery, but they must be systemati-
cally controlled on acceptance at the site and realigned
if necessary.
To do this, do not modify the wedging of the various
parts, but check the flatness of the support surface and
use the adjustable foot to clear the frame of stresses that
could affect it.
2.6.3 ELECTIC MOTORS
Check the compatibility of the instructions on the motor
with the supply voltage.
Follow the wiring diagram, use wiring that is appropriate
for the power and be particularly careful about the
contacts which must be well tightened.
The motors should be protected with circuit breakers
and suitable fuses. Connect the regulatory electrical
grounding.
2.6.4 THERMIC MOTORS
Do not forget that these motors are not reversible. It is
absolutely necessary to carefully control the suction and
discharge sides of the pump before connecting the
group to the piping.
Using electric motors is very common now; however, we
strongly advise careful reading of the accompanying ins-
truction manual.
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
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.
WARNING
DISCONNECT THE ELECTRICITY SUPPLY
BEFORE ANY MAINTENANCE OPERATION.
Dangerous voltage.
Can cause
injury and death
.
Carry out the control at four points :
at the top ‐ at the bottom ‐ left ‐ right
Correct
Bad alignment
Angular fault
2. INSTALLATION (continued)
