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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4.7 Summary of Alarm Conditions and System Responses
Alarm Condition
Auto-Shutdown Auto-Isolation Alarm Only Reset Delay**
D.I. Pressure Relief
X Manual
Venting
Hot Valve Over Temp. X Manual
X
Low Flow Rate
X
Manual
X
Low Process Pressure X X* Manual
X
Low Process Temp.
X Auto
X
Process Over Temp.
X
Manual
X
Shellside Over Temp.
X
Manual
Steam Pressure Relief
X Manual
Venting
Vessel Flooding
X
Auto
Water Leak
X
Auto
*The Auto-Isolation System will ONLY initiate automatically during the Low Process Pressure
condition if set to AUTO mode.
**There is an alarm delay on specific alarm types detailed above. The delay time for the Low
Process Temperature, Process Over Temperature, and Low Process Pressure alarms can be
modified on its respective Diagnostic Information screen. Please note that the Hot Valve Over
Temperature and Low Flow Rate alarms are not modifiable by the customer.
Note: Any of these alarms can occur simultaneously. The combination of alarm
conditions and responses can be altered in the PLC program if so desired by the
equipment user and agreed to in writing by the factory. Contact the factory for
instructions and temporary passwords required to make changes in the PLC program.
Although password protected, any unauthorized changes to the PLC program will void the
unit‟s warranty and will cause the user to hold harmless the manufacturer for any and all
liability associated with the unit whatsoever.
