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5microprocessor control, 1 introduction, 2 setting the process water temperature – HP QuarterHorse Series 0.25 hp Portable Chiller PS-025 User Manual

Page 19: 3 power switch

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PS QuarterHorse Series Chillers

Page 19

5

Microprocessor Control

5-1 Introduction

Standard PS Series chillers use a microprocessor based controller. The controller is a
modular, self-contained unit that can slide from its mounting housing. It is factory set
and adjusted; no field adjustment to the internal controls is necessary.

5-2 Setting the Process Water Temperature

• Press and hold the star key.
• While holding down the star key, press the arrow up or arrow down key to

raise or lower the process water temperature set point.

5-3 Power Switch

POWER
This switch energizes the control circuit; it also turns off the chiller.