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Teledyne API M751H High Performance Zero Air Generator Operation
07773A DCN6833 27
4.2.17 Dewpoint Sensor
The dewpoint sensor ensures that the Regenerative Dryer maintains a dewpoint less
than -20°C (up to the maximum flow rate). This will increase the life of the chemical
scrubbers. When the dewpoint drops below -20°C, the green LED (dewpoint
indicator) on the instrument panel will light green, indicating that the air is dry.
4.2.18 Instrument Panel Indicator Lights
Multicolor indicator lights for both the power state and dewpoint state relay diagnostic
information and instrument mode to the user.
Table 4-1: Power and Dewpoint Condition Indicators
Power
Indicator
Dew Point
Indicator
Instrument State
Green
Green
Power ON, Dewpoint GOOD
Green
Yellow
Power ON, Dewpoint CAUTION
Green
Red
Power ON, Dewpoint BAD
Green
Red-Flashing
Power ON, Dewpoint CRITICAL
Alternating
Yellow –
Green
Representative
of Dewpoint
State
Maintenance Mode. 24hr Dewpoint Fault
Override
Red-Flashing
Yellow
Temperature Fault.
Red-Flashing
Red
Dew Point Fault.