5

Microprocessor Control

 

 

5-1 Introduction

Standard SMC 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 until the SP indicator lights.

Press or to raise or lower the setpoint to the desired leaving water temperature.

Note: SMC leaving water temperature range of operation is 30ºF (-1°C) to 65ºF (18°C).

Press to display the current process temperature (SP and AL are off).

5-3 Setting the Alarm Value

Press until AL lights.

Press or to raise or lower the alarm value. The factory setting is 10, and should be correct for most processes. Setting the alarm value to 10 creates an alarm if the process temperature rises or falls 10ºF/ºC or more from the chiller process setpoint.

Press to display the current process temperature (SP and AL are off).

SMC Series Chillers

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Sterling A0544325 Microprocessor Control, Setting the Process Water Temperature, Setting the Alarm Value