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5.10 CO Sensor Replacement
(Model 100/105/120/125)
Be sure to perform all of the checks lsted n Secton 4.13.13 to ensure that
the CO sensor needs to be replaced.
Material Required: • CO Sensor, P/N 24-7265
Procedure:
1. Dsassemble the analyzer as follows:
a. Remove the battery cover and the batteres, uncoverng one of
the cover hold-down screws.
b. Remove and set asde all four cover hold-down screws.
c. Wth the analyzer on ts back, remove the front cover, layng t
face down to the left of the body.
d. Carefully remove the crcut board, slppng off the battery con-
nector on top, and then layng the crcut board face down n the
top cover.
2. Gently pull CO sensor out of ts socket (see Fgure 5-5).
3. Properly dspose of the old CO sensor (see the nstructon sheet that
comes wth the new sensor).
4. It s recommended that the CO sensor gasket be replaced at the
same tme as the sensor. Remove the old gasket and dscard. Re-
move the paper backng from the new gasket and adhere t to the
case n the same poston as the old one.
Important: Ensure that the new gasket does not restrict the
inlet and exhaust holes in the case.
5. Plug the new CO sensor nto ts socket.
6. Reassemble the analyzer.
50
Fyrite Pro
• CO Sensor Gasket, P/N 24-1112
• #1 Phllps Screwdrver
Instruction 24-9395
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