Operations; Power Up; Display Turned "On - Macurco CX-6 Instrucciones Para El Usuario

Macurco CX-xx Operation Manual

4 Operations

4.1 Power up

The CX-xx cycles through an internal self-test cycle for the first minute that it is powered. The unit will execute the
test cycle any time power is dropped and reapplied (i.e. power failure).
During the self-test cycle the unit will:
• Display the firmware version number, then count down from 60 to 0 (if the display setting is "On").
• The alarm relay will be activated for 10 seconds and the fan relay for 60 seconds during the power-up cycle
(if PUt is ON).
• The indicator light (LED) will flash green during the self-test cycle.
4-20mA will ramp up to 16mA during the warmup (if 420 is ON and PUt is ON).
•
• At the end of the 1-minute cycle, the unit will take its first sample of the air and the indicator light will turn
solid green.

4.2 Display turned "On"

With the display ("dSP") setting turned "On", the detector will operate as follows:
Clean Air – The CX-xx will flash between the current concentration of CO ppm and the current concentration of NO
ppm. The CO reading will start with a "C" and the NO
Fan Relay Level – When either the CO or NO
"Frd" period has elapsed, the display will flash between "FAn" and the current concentration of gases. The
sequence of display when the Fan Relay is activated is: "Fan", CO ("CXXX") reading, NO
Alarm Relay Level – When either the CO or NO
between "ALr" and the current concentration of gases. The sequence of display when the Alarm Relay is activated is:
"ALr", CO Reading ("CXXX"), NO
"On".
Trouble – When the device is in a trouble state, the display will display the "t" Error code (t001 for example) and the
Alarm Relay will activate. If the Trouble Fan Setting is enabled, the Fan Relay will activate. See Section 5.1.2 Trouble
Codes and Section 4.5.14 Select Trouble Fan Setting – "tFS"
NOTE: Trouble states related to the CO and NO
exists for the CO or NO sensor only, the display will alternate between the trouble code for the sensor in the
2
trouble state and the gas reading for the sensor in the normal state.
Calibration Due – When the Calibration Period functionality is enabled and the detector is within 1 month of the
calibration period, the Calibration Due message will be displayed. Calibration Due is indicated by "CdUE" (for CO
Sensor) and "ndUE" (for NO
will be "CdUE", CO reading, "ndUE", NO
Calibration Due is resolved only with a successful field calibration.
NOTE: If a Fan or Alarm Relay is activated during Calibration Due, 'Fan' or 'ALr' will be appended at the end of the
display sequence for calibration due.
REV – 1.1
2
concentration reaches the Fan Relay setting and the Fan Run Delay
2
concentration reaches the Alarm Relay setting, the display will flash
2
reading ("n Y.Y").The buzzer will sound indicating "Alarm" if the buzzer is turned
2
sensors are represented by different "t" Error codes. So, if an error
2
sensor). When both CO and NO
2
reading.
2
[34-2900-0512-0 ]
reading will start with an "n".
sensors are in Calibration Due, the display sequence
2
reading ("n Y.Y").
2
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