Ametek Thermox 2000 ATEX Series User Manual page 145

Series 2000 LEDs
This section describes how to interpret information on the LEDs in the
Series 2000 controller auto calibration card and combustibles card.
Auto Calibration Card LEDs
All auto calibration card LEDs denote that the Series 2000 has sent out a 15-
volt signal to the RCU to activate the appropriate solenoid. LEDs are clearly
labeled on the auto calibration card - 1 is on the far right of the card as you
look at it.
1 - In Calibration - when lit, indicates that the system is in calibration.
This LED remains on for the entire calibration cycle, then turns off
during the calibration recovery time.
2 - O
2
gized and the O
3 - O
2
gized and the zero gas should be flowing through the sensor.
4 - Combustibles span - when lit, indicates that the combustibles span gas
solenoid is energized and the combustibles span gas should be
flowing into the sensor.
5 through 12 - Not used
Combustibles Card LEDs
NOTE
1. Combustibles 1 - when lit, indicates that the Combustibles alarm #1
relay is energized (contact closed). This corresponds to Alarm 5 in
software.
2. Combustibles 2 - when lit, indicates that the Combustibles alarm #2
relay is energized (contact closed). This corresponds to Alarm 6 in
software.
span - when lit, indicates that the O
span gas should be flowing into the sensor.
2
Zero - when lit, indicates that the O
Combustibles alarm relays are labeled on the wiring card and in
software as Alarms 5 & 6. LED number 1 is on the far right of the
card as you look at it; LED number 2 is to the left of LED 1. All
LEDs denote an Alarm relay is energized (contact closed).
span gas solenoid is ener-
2
zero gas solenoid is ener-
2
Maintenance and Troubleshooting | 6-17