Atest Gaz EcoAlpa5, User Manual

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However, after a gas detector reports exceeding of the alarm level, the supply of gas (valve closing) takes
place only after a specific delay (about 5 seconds) and three output pulses necessary to close the valve are
produced at that output. On the contrary, when alarm is reported at the input for an external alarm, the gas
supply is isolated with no delay.
5 User interface
Figure 7: Front panel
5.1 Indicators of detector statuses
These indicators are designed to reflect operation statuses of detectors (1-5) collaborating with the control
unit.
Indicator Status / colour Information
ALARM No emergency threshold is exceeded
/ red 1 blink – first emergency (alarm) threshold is exceeded
/ red 2 blinks – second emergency (alarm) threshold is exceeded
/ red 3 blinks – third emergency (alarm) threshold is exceeded
OPERATION A specific detector reports its failure or its maximum level of gas
detection is exceeded
/ green A specific detector operates correctly and no exceeding of
emergency threshold is exceeded
FAILURE No failure
/ yellow Slow blinking of the LED – incorrect settings for the number of
measurement channels (the control unit found a detector that is
connected to the input associated with an inactive channel) see
details in Section 8.4.1
/ yellow Failure of a specific detector or its communication line
Table 5: Purpose of the Gas Detectors indicator
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User Manual: POD-057-ENG R01
CONTROL UNIT FAILURE
Eco Alpa5
BATTERY
EXT. ALARM
5. 4. 3. 2. 1.
TEST ALARM
OPERATION
OPERATION
VALVE
FAILURE
MEMORY
CONF TEST
Gas detector status
Battery status
Valve status Keyboard
Supply
Control Unit status