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Thermo Scientific—APEX 500 Rx User’s Guide
Fail-Safe Operation
The APEX 500 Rx has been designed for fail-safe operation. The following table outlines
the fail-safe failures and the fail-safe actions taken by the APEX.
Fail-safe failure
Fail-safe system action
No electrical input power or
solenoid power (electric only)
The reject gate closes. All product
(contaminated or uncontaminated)
goes into the reject bin.
No air pressure
The reject gate closes. All product
(contaminated or uncontaminated)
goes into the reject bin.
The APEX detects an active fault*
Reject-verification fault
AuditCheck fault
Any other active fault
The reject gate closes. All product
(contaminated or uncontaminated)
goes into the reject bin.
* Active faults are always displayed on the Apex 500 Rx control panel. An optional
alarm fault output package is available to give a visual (red light) and/or audio
(horn) indication when a fault occurs.
