Fail-Safe Operation - Thermo Scientific APEX 500 Rx User Manual

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
No electrical input power or
solenoid power (electric only)
No air pressure
The APEX detects an active fault*
 Reject-verification fault
 AuditCheck fault
 Any other active fault
* 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.
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Fail-safe system action
The reject gate closes. All product
(contaminated or uncontaminated)
goes into the reject bin.
The reject gate closes. All product
(contaminated or uncontaminated)
goes into the reject bin.
The reject gate closes. All product
(contaminated or uncontaminated)
goes into the reject bin.
Thermo Scientific—APEX 500 Rx User's Guide