AEC WD 350 through WD3000 Dehumidifying Dryers - Manual (Page 18)

3-3 Making Electrical Connections
The serial tag lists voltage, phase, and amp draw information.
Line voltage must be within plus or minus ten percent (±10%) of the voltage listed on the
serial tag, or damage may occur. Phase imbalance must be less than two percent (2%).
Fulfill all national, state, and local safety and electrical code requirements.
A qualified electrician should make all electrical connections.
Make sure all electrical connections are tight.
Connect main power to the dryer at the disconnect or terminals in the upper right corner of
the control enclosure.
Install a fused disconnect with a lockout feature in the power main leading to the dryer.
The power drop must include a ground wire.
3-4 Checking for Proper Blower Rotation
Three-Phase Models
The blower rotates properly when air flows from the delivery outlet.
Caution!
In three-phase models, incorrect phasing of power leads
can cause backward rotation of blower motors
and CONTAMINATION OF THE DESICCANT!
Always check blower rotation before putting material in the drying hopper!
If the three-phase blower rotates improperly, reverse any two wires at the fused disconnect
outside the dryer or at the disconnect/terminal in the control enclosure. This assures that the
blower rotates in the proper direction.
WDMR and WDFR Series Dehumidifying Dryers Page 17