Instruction 0024-9395
50
Fyrite Pro
5.10 CO Sensor Replacement
(Model 100/105/120/125)
Be sure to perform all of the checks listed in Sec tion 4.13.13 to ensure that
the CO sensor needs to be replaced.
Material Required:
• CO Sensor, P/N 0024-7265
• CO Sensor Gasket, P/N 0024-1112
• #1 Phillips Screwdriver
Procedure:
1. Disassemble the analyzer as follows:
a. Remove the battery cover and the batteries, uncovering one of
the cover hold-down screws.
b. Remove and set aside all four cover hold-down screws.
c. With the analyzer on its back, remove the front cover, laying it
face down to the left of the body.
d. Carefully remove the circuit board, slipping off the battery con-
nec tor on top, and then laying the circuit board face down in the
top cover.
2. Gently pull CO sensor out of its socket (see Figure 5-5).
3. Properly dispose of the old CO sensor (see the in struc tion sheet that
comes with the new sensor).
4. It is recommended that the CO sensor gasket be re placed at the
same time as the sensor. Remove the old gasket and discard. Re-
move the paper backing from the new gasket and adhere it to the
case in the same position 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 into its socket.
6. Reassemble the analyzer.
