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Instruction Manual
Model 2350 / 2360 Gas Monitor (3/99)
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1.2.3. ALARM INDICATORS
The Model 2350 front panel has one audible alarm and four LED annunciation lights.
• AUDIBLE ALARM: The Audible Alarm will sound when either the CO or CH
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gas concentration
exceeds the respective calibrated threshold levels. The Audible Alarm produces a continuous tone of
2900 Hz at 68 dB.
• POWER FAILURE ALARM: The Power-On Failure Alarm consists of a Power-On Lamp (green) which
glows when -48 VDC is present and turns off if power is lost.
• CARBON MONOXIDE STATUS LIGHTS: The three CO status lights are: Safe (green), Alarm (red) and
Sensor Failure (red).
The Model 2360 has an additional three LED annunciation lights.
• COMBUSTIBLE STATUS LIGHTS: The three Combustible status lights are: Safe (green), Alarm (red)
and Sensor Failure (red).
1.2.4. TEST SWITCHES
Test point pairs located on the component side of the printed circuit board (figure 1.4) are provided to allow
testing of the following functions:
• LAMP TEST: When the lamp test pins are shorted together all LED indicators, and the audible alarm,
are activated.
• ALARM TEST: When the alarm test pins (W3) are first shorted together then (W4) ares shorted, all LED
indicators, three relays (ventilation, Carbon Monoxide, and Combustible gas) and the audible alarm are
activated.
• FAILED SENSOR TESTS: When the respective failed sensor test pins are shorted together a failure of
the selected sensor will be simulated. During this test the sensor failure LED indicator will glow and the
Fail and Remote relays will activate.
Figure 1.4
Test Point Locations
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