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Micro Series Water Temperature Control Units 
Reference Manual (PN: 682.89373.00) for 
Complete Operation and Installation Instructions 
(Available online at www.sterlco.com) 
 
Sterling, Inc. 
Part No:  682.92594.10 
2900 S. 160
th
 Street · New Berlin, WI 53151 · USA   
 
 
 
Bulletin No: HC2-320 
Tel. 262.641.8610 • Fax 262.641.8653 
 
 
 
 
Quickstart Installation Checklist 
(Refer to main manual for complete installation instructions). 
 
1.  Connect 3-phase power based on nameplate data. 
2.  Install properly sized plumbing between temperature control unit 
and primary processing equipment (supply and return).  
3.  Install properly sized plumbing between temperature control unit 
and cooling water supply and return. Cooling water supply must be 
at least 16 psi (110 kPa/1.1bar) for a 250˚F (121°C)
 
configuration 
and 55 psi (379 kPa/3.8bar) for a 300˚F (149°C) configuration.  
4.  Ensure proper pump rotation. (The pump should be moving 
clockwise while looking at the motor end). 
 
 
 
 
Unit Operation 
(Refer to main manual and controller manual for complete operating instructions). 
 
Start Up 
1. Push 
the 
ON/OFF rocker switch to the ON ( | ) to energize the unit and begin the temperature control cycle. 
The switch will be illuminated whenever the unit is on.  
2.  The unit will automatically vent for approximately one minute. 
3.  If needed, press and hold the vent button to purge any additional air from the process loop. 
 
4.  Set process temperature (PV) by pressing the         Up Arrow or         Down Arrow keys.  
Shut Down 
1.  Adjust set point below 150˚ F (66˚ C). 
Allow unit to stabilize. 
2.  Push ON/OFF rocker switch to the OFF               
( 0 ) position to de-energize the unit. 
 
 
Standard Controller