Safety Related System Characteristics; Response In Operation And Fault Conditions; Important Notice - nVent RAYCHEM NGC-20-C-E Guide D'installation, D'utilisation Et De Maintenance

4.6.4 Safety related system characteristics
The failure types of; sensor break, sensor short, sensor misconnected and random hardware failure are permanently monitored.
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4.6.5 Response in operation and fault conditions
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The response in operation and fault conditions is described in the operating manual. The necessary functional tests are described in
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paragraph 4.5.3 of this operating manual. The test to be applied in a fault condition is described in paragraph 4.5.2 of this operating
manual. A functional test must be carried out after commissioning, repair to the safety system, or an alteration of safety-related
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parameters. If a fault is detected in the course of a functional test, then measures must be implemented to restore the reliable
functionality of the safety system. This can, for instance, be achieved through replacement of the control unit. It is recommended that
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the tests that have been carried out are all appropriately documented.

IMPORTANT NOTICE

In case a failure of the safety system is detected either during operation or during routine maintenance when executing a function test the unit should
be switched off and taken out of service. Defects in the safety system cannot be repaired in the field. Defective units are to be replaced and returned to
the manufacturer for investigation. Please contact your nearest nVent representative for more instructions. A list of worldwide representations can be
found on the last page of this document or on nVent.com
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RAYCHEM-OM-INSTALL130-NGC20CLE-ML-2204