AEC Econo-Cool Chillers - Manual (Page 43)

Page 42 AEC Water Temperature Control Units
5-6 Checking Motor Rotation Direction
Check for correct pump rotation direction by looking at the end of the motor. Press the
ON/OFF switch from the OFF ( O ) position to the ON ( | ) button, and note the
direction that the motor turns. Rotation should be clockwise when viewed from the
motor end.
Note: Make sure that a qualified electrician performs the following steps.
To change rotation direction:
1. Disconnect and lock out power at the fused disconnect.
2. Reverse any two incoming leads at the power terminal blocks.
3. Do not switch leads at the motor or motor starters.
5-7 Shutting Down the Temperature Control Unit
Cool the unit down by selecting a set point of zero ( 0 ). Let the unit stabilize at one
temperature close to the incoming water temperature, then press the STOP button. Now
press the VENT button to relieve any remaining pressure in the system.