M&C TechGroup EC-30_FD Operator's manual - Manual (Page 33)

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Gas sampling and gas conditioning technology 3-4.20-ME
The sample gas flows through the pre-cooling stage  and low-temperature stage . This cycle will
be changed automatically every three hours.
In the event of a brief (mains) power failure:

The current cycle status will be stored;

All LEDs go out;

The status alarm contact is activated;

The flow of sample gas is cut off externally, in case the sample gas pump or a solenoid valve in
the sample gas line are to be controlled by an alarm contact.
When the mains power is restored:

The controller starts up automatically;

The status alarm contact is deactivated;
 The status alarm contact will release the flow of sample gas externally, in case the sample gas
pump or a solenoid valve in the sample gas line are controlled by an alarm contact.
In the event of a prolonged power failure, the controller will start up automatically like it happens for a
new start. Release is only done when the temperature is < -25°C.