-21-
Test Run (Motor Rotation Direction Check)
Because the unit operates a motor with a three-phase power supply, its rotational direction
can be reversed, depending on how it is wired. Make sure that the motor rotates clockwise (arrow
direction) after the unit is installed or if any electrical work has been performed by your
company.
1
Turn on the power for a moment.
Turn on the power and instantaneously turn it off.
2
Check the rotation direction.
If the rotation of the motor has slowed down, check
through the outlet hole that it is rotating clockwise
(arrow direction). If it is rotating in the opposite
direction, return to the section on “Electrical
Wiring”, and interchange the U and W phases of the
three power cords in the terminal box.
Caution:
・
Be sure to wear protective equipment such
as goggles or a mask before checking the
direction of the rotation.
・
Spend as short a time as possible to check
the direction of the motor. Even when the
motor is rotating by inertia, the collected
mist could splash or the dust could be
discharged from the outlet hole. Therefore,
do not look at the outlet hole more than
necessary.
・
All work associated with interchanging the
phases due to the reverse rotation of the
motor must be performed by an authorized
electrician.
Check motor rotation direction
Interchange phases U and W