Instructions / Assembly

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OPERATING THE FAN
If the VFD has been in storage or disconnected from power for more than one year, apply AC supply
power to the VFD for two hours prior to operation to recondition the internal DC bus capacitors.
Starting and stopping the fan
The RUN and STOP buttons control the fan start and stop functions.
To start the fan, press the green RUN button.
To stop the fan, press the red STOP button.
M
R F
STOP
RUN
M
R F
STOP
RUN
M
R F
STOP
RUN
M
R F
STOP
RUN
Adjusting fan speed
The arrow buttons control speed adjustment.
To adjust fan speed, press the Up or Down arrow button.
• Single presses will increase or decrease the speed in 1–2% increments.
• Pressing and holding the Up or Down arrow button will slowly and continuously adjust fan
speed until the button is released.
Reversing direction of fan rotation
The direction of fan rotation can be reversed when the fan is stopped or running.
To reverse the direction of rotation, press the Direction button, and then press the Memory/Enter
button as shown on the left. The associated direction indicator will flash to indicate the pending
change.
then
M
R F
STOP
RUN