Vision VR48 4 Series User Manual page 25

General Information - Installation 25
The direction of rotation must be confirmed prior to using the vacuum pump. After all electrical
connections have been made, briefly turn on the power to the vacuum pump and by viewing the
direction of rotation through the motor fan cover, and comparing it to the directional rotation indicators,
confirm the motor is rotating in the correct direction. If it is not, the electrician must swap two of the
power leads to the vacuum pump motor. It does not matter which two leads are swapped. After the
wiring change has been made, briefly turn on the power to the vacuum pump to again confirm the
direction of rotation.
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