AMC-1040 CO / NO2 Vehicle Exhaust
16
ON-BOARD SENSOR
STEP 1:
STEP 5:
STEP 4:
STEP 3:
STEP 2: REMOVE THE FOUR COVER SCREWS AND COVER PLATE FROM UNIT.
UNPLUG USED SENSOR ELEMENT FROM THE BOARD AND DISPOSE OF IT PROPERLY.
PLUG IN A NEW SENSOR ELEMENT ONTO THE BOARD, MAKING SURE SENSOR
PINS ARE ALIGNED WITH THE PIN SOCKETS.
CONNECT POWER AND RE-CALIBRATE.
REINSTALL COVER PLATE ONTO THE UNIT.
DISCONNECT POWER.
STEP 6:
LOW
COM.
N.C.
N.O.
COM.
N.C.
N.O.
NEUT. HOT
GND
CLASS-2 TRANSFORMER
CLASS-2 TRANSFORMER
TB5
TB3
BUZZER
TB6
TB2
1
1
HIGH
LOW
FAIL
POWER
AUD
DLY
L
H
EC
ZERO
EC
SPAN
FUSE
DISPLAY
OPTIONAL
TB3
TB5
TB3
BUZZER
TB6
TB2
1
1
HIGH
LOW
FAIL
POWER
AUD
DLY
L
H
EC
ZERO
EC
SPAN
FUSE
DISPLAY
OPTIONAL
COM.
CO
HIGH
GND AC AC
-FAIL+
-LO+
-HI+
NO2
L
GND AC AC
(OPTIONAL)
-OUT+
N.C.
N.O.
FAIL
-FAIL+
-LO+
-HI+
-OUT+
FIGURE 8: Sensor replacement.
