Sterling 882.00295.00 User Manual

Large Dehumidifying Dryers 

Mechanical Installation 

28 

After the electrical connections have been made, check the process and regeneration blowers 
for proper blower rotation. Check blower rotation before making process air connections 
between the dryer and hoppers, and before connecting cooling water (for the optional 
aftercooler). 

Blowers should rotate in a clockwise direction opposite shaft end. See Figure. 

The blowers are rotating properly when air flows from the delivery outlet.  

Incorrect phasing of power leads will cause backward rotation of blower motors and 
contamination of the desiccant. 

If both blowers are rotating improperly, reverse any two wires at the fused disconnect outside 
the dryer or at the disconnect/terminal in the control enclosure. This assures that both blowers 
will be rotating in the proper direction. 

If just one blower is rotating incorrectly, reverse the wires at the motor starters. 

 

 
 

 

 

 

 

 

 

 

 

Process Blower 

Regeneration Blower