AEC Econo-Cool Chillers - Manual (Page 40)

AEC Water Temperature Control Units Page 39
; Connect the main power to the unit disconnect switch, and
press the START switch to check for proper pump rotation
direction as described in Section 5-6 on Page 42. Pump rotation
should be clockwise, viewed from the motor end.
; Check your work and proceed to the
Startup Procedure
section on the following page.
5-3 Starting the Temperature Control Unit
; Turn on the water supply, apply main power to unit, press
ON/OFF switch to the ON position.
; The unit automatically executes a one-minute venting sequence
to expel air trapped in the process piping. We recommend a
longer venting sequence on larger process systems. Press and
hold the
VENT button to force the cooling/vent valve open and
eliminate air trapped in the process piping in larger process
systems.
The controller is OFF and the Vent Cycle indicator is lighted
during the vent sequence.
; Set the microprocessor controller to the process temperature
you want by pressing the Up Arrow button or the
Down Arrow button on the front of the controller.
; Allow your process to reach the set point temperature, then
auto-tune the control by pressing the AT key. See Section 4-10
on Page 36 for more information.
; Watch the drain for any bubbles or erratic flow, which
indicates if the system has been properly vented. If the stream
is steady, the unit was properly vented and all air is out of the
system.
; Operate the unit, checking for anything unusual that could
indicate improper operation.
Note: You can stop your temperature control unit at any time by pressing the
STOP button.