World Leaders in Ultra-Pure Heating
Revision 10
www.heateflex.com
01/17/13
405 E. Santa Clara St.
Arcadia, CA 91006-7218
Tel: (626) 599-8566 Fax: (626) 599-9567
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3.2.4 Temperature Trending
This screen consists of a graph to monitor the temperature-control of the unit in real time. The
graph plots the actual temperature, actual flow rate and the actual actuator position verses time
to provide insight as to how the unit is functioning.
By clearing and starting the readings on the graph, one can watch the actual temperature, actual
flow rate and the actual actuator position as the look-up table and trimmer function attempt to
adjust the temperature to ± 1°C.
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3.2.5 Alarm Menu and Alarm Screens
If an alarm condition occurs, the “ALARM MENU” button will illuminate and an audio alarm
will sound indicating that an alarm condition is present. There is also a set of dry contacts on
the back of the touch-screen display on the main unit. In addition an optional remote display
can be used to monitor alarm conditions at a central control room, etc.
The Alarm Menu screen consists of ten possible alarm conditions. The condition that is
presently causing the alarm will illuminate. It is possible that two or more alarm conditions
could exist at the same time. Some of the alarm types require a manual reset in order to
resume normal operation. To manually reset the alarm press the “ALARM RESET” button
located on the System Status screen or the Alarm Menu screen. Other alarms automatically
reset (see Section 4.7 Summary of Alarm Conditions and System Responses for more detailed
information).Depression of any of the alarm buttons on the Alarm Menu screen will go to the
respective alarm description screen providing a summary of the alarm condition. The
diagnostic information screen provides information on potential causes and troubleshooting of
the alarm by pressing the “DIAGNOSTIC INFORMATION” button.
Each alarm screen contains the activity status for the alarm, a brief description of the reason for
the alarm, Audio Alarm buttons, and numerous screen-switching buttons. The “ENABLE
AUDIO” or “DISABLE AUDIO” buttons will illuminate indicating whether or not it is active.
To silence the audio alarm press the “DISABLE AUDIO” button on either the System Status
screen or any of the alarm description screens. To activate the audio alarm press the
“ENABLE AUDIO” button.
NOTE: Once the “DISABLE AUDIO” button is pressed the audio alarm does not reset
and will remain inactive until the “ENABLE AUDIO” button is pressed.
There are also four screen-switch options on each alarm screen: Main Menu, System Status,
Alarm Menu, and the Diagnostic Information to provide convenient navigation through the
HMI screens. The Diagnostic Information button can be pressed to display additional
troubleshooting information related to the specific alarm condition in order to assist in
troubleshooting the cause for the alarm or to change alarm parameters if available.
