SECTION 4 1100E, 1500E, 1800E USER MANUAL
45
4.7 MOTOR ROTATION
DIRECTION CHECK
Motor rotation check must be made at compressor
startup. See Figure 4-3. The compressor will not
operate correctly if it runs in the wrong direction.
Open the compressor door to view the motor
rotation. After the electrical wiring has been done, it
is necessary to check the direction of the motor
rotation. Pull out the EMERGENCY STOP button
and press once, quickly and in succession, the “ ”
(START) and “ ” (STOP) pads. This action will
bump start the motor for a very short time. When
looking at the motor from the end opposite the
compressor unit, the shaft should be turning
clockwise. If the reversed rotation is noted,
disconnect the power to the starter and exchange
any two of the three power input leads, then re-check
rotation. A “Direction of Rotation” decal is located on
the motor drive housing to show proper motor/
compressor rotation. An alternative to this procedure
is to set the WS Controller to display P1 separator/
sump pressure. Pull out the EMERGENCY STOP
button and press once, quickly and in succession,
the “ ” (START) and “ ” (STOP) pads. This
action will bump start the motor for a very short time.
If motor rotation is correct there will be immediate
pressure shown. If no pressure is present, reverse
rotation is occurring. Disconnect the power to the
starter and exchange any two of the three power
input leads. Recheck rotation as outlined above.
4.8 FAN MOTOR ROTATION
CHECK
On initial start-up check that the fan is rotating in the
proper direction. For correct rotation, see Figure 4-2
and Figure 4-3.
Figure 4-2: Fan Motor/Main Motor Rotational Direction
50Hz 15HP/11KW, 50Hz 20HP/15KW, 50HZ or 60HZ 30HP/22KW
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