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SMC Series Chillers Page 25
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).