13
Electric
Electric
Electric
Electric W
W
W
Wiring
iring
iring
iring
Electric wiring must be carried out by qualified personnel.
Warning
Make sure that the power is disconnected before beginning to
work on wiring. Also take measures to avoid accidental power-
on.
Warning
Be sure to follow the instruction of the motor wiring diagram to
prevent fire and electrical leakage.
Warning
Ground the equipment properly to prevent fire and electrical
shocks due to electrical leakage.
・
Check the direction of the motor rotation. If using NOP’s pre-installed motor
(which is specially customized to work with NOP pump), the motor rotation is
indicated on the wiring plate on the motor frame or terminal box. Connect the
motor accordingly.
(Our NOP’s pre-installed motor (a 3-phase type) is, when viewed from the
suction side, designed to rotate in counter-clockwise if wired as illustrated in
figure 8 below.)
Figure 8
Figure 8
Figure 8
Figure 8：
：
：
：Motor
Motor
Motor
Motor W
W
W
Wiring
iring
iring
iring D
D
D
Diagram
iagram
iagram
iagram
For
For
For
For O
O
O
Operation
peration
peration
peration
●●●●Start
Start
Start
Start----up
up
up
up C
C
C
Checklist
hecklist
hecklist
hecklist
・
Is the tank filled with coolant up to,
or over the specified level? (See Figure 5, P.8)
・
Are the inlet, outlet and drain ports unblocked?
・
Is there any loose sections in piping?
・On the initial startup, turn the pump on and off quickly to confirm that the motor
is running in the correct direction.
Caution
Do not run the pump in reverse direction.
●●●●TTTTest
est
est
est R
R
R
Run
un
un
un
Caution
Do not run the pump dry over 10 second.
Caution
Be sure to bleed an outlet piping of air on a initial run.
