To insure there is no damage to the main electronics, it is recommended that
the circuit board be removed prior to relieving a knockout or drilling through
the pilot points for the flush mount option. Extreme caution should be taken
when removing and re-installing the circuit board so as not to damage it.
Wiring
Connect only to Class 2 power supply through approved conduit and
enclosures in accordance with local authorities having jurisdiction.
Recommended Cable: 3 or 4 conductors (application dependent), 24 AWG,
stranded tinned copper, shielded cable Belden #9842 or equivalent.
003
Warm-Up And Operation
All AirAware versions operate on 12-24 VDC. The Monitor version includes a
120 VAC power pack for North American electrical sockets (not included in
the International version) that supplies 24 VDC to the instrument.
Once powered, the instrument will go through an automatic self-test. During
this time it will complete a full display segment test, brief audio and visual
alarm test, software version, gas type, configuration M, C, T, CT (Note: “A”
as an indicator of optional audio alarm) and finally a live continuous display
of the gas concentration. During the first three minutes of operation the alarms
will not activate and the 4-20 mA signal with be held at 3 mA (16 mA for
O
2
).***
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