Critical Environment Technologies GEM-II, Руководство по эксплуатации

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© 2014 All rights reserved. Data subject to change without notice. 35
Rev. E | 2014.10 GEM-II - Operation Manual
In the event of a gas build up beyond the preset low alarm trip point, the CH-1-Int. LED (outer
door right side) illuminates, the “Low” alarm level LED (red - outer door left side) illuminates and
the low alarm relay de-energizes activating anything controlled by it. If a time delay “ON” has
been set (internal DIP switches), then the “Low” alarm LED will “flash” indicating the time delay
has been activated and the low alarm relay will not de-energize until the delay has timed out.
Once the low alarm relay has de-energized, it will re-energize automatically once the gas alarm
condition goes away, unless a time delay “OFF” (minimum run time - internal DIP switches) has
been programmed. The same procedure applies to CH-2 Ext. in the case of a two channel (two
sensors) system.
In the event of a gas build up beyond the preset high alarm trip point, the “CH-1” LED (outer door
right side) illuminates, the “High” alarm level LED (red - outer door left side) illuminates and
the high alarm relay de-energizes activating anything controlled by it. If a time delay “ON” has
been set (internal DIP switches), then the “High” alarm LED will “flash” indicating the time delay
has been activated and the high alarm relay will not de-energize until the delay has timed out.
Once the high alarm relay has de-energized, it will re-energize automatically once the gas alarm
condition has dispatched. The same procedure applies to the second channel in the case of a two
channel (two sensors) system.
NOTE:
No minimum run time delay is provided for the high alarm relay.
7.2 Test functions
A momentary test feature is provided to allow the user to test basic functionality of the circuit.
Press the “UP” push-button (internal) for 5-seconds, the audible alarm will beep once to
indicate it is in the 5-second test function. Release the “UP” push-button after 5-seconds and an
automatic test function will occur.
Alternatively use the silence push-button on the front door to perform the same function.
The low alarm relay will de-energize and the low alarm LED on the front door will illuminate.
The low alarm relay will then re-energize while the low alarm LED stays lit for 10-seconds.
Next, the high alarm relay will de-energize, the high alarm LED on the front door will illuminate
and the audible alarm will activate. The relay will then re-energize but the high alarm LED and
the audible alarm will stay activated for 10-seconds. After 10-seconds, everything resets to
normal operating condition.