6. Lubricate and install the COe sensor gasket (F). Apply anti-seize compound
to threads of screws.
7. Install COe sensor holder (A), lockwashers (I), and screws (J). Rotate flat of
COe sensor (A) to center of sensor holder (E).
8. Align COe sensor flat parallel to sensor holder flat, as shown in Figure
10-17. Tighten screws (J, Figure 10-15).
9. If replacing the thermocouple adapter (H), apply anti-seize to the pipe
threads. Install and tighten the thermocouple adaptor.
Assemble O
2
sensor and heater strut assembly
Procedure
1. See Figure 10-14. Assemble O
2
cell, gasket, and heater tube. Make sure the
test gas passage holes line up with each other in all components.
2. Apply a small amount of anti-seize compound to the screw threads and use
screws to secure the assembly. Torque to 35 in.-lb. (4 N-m).
3. Carefully slide the O
2
heater strut assembly into the heater tube.
4. Press down on the back plate of the strut bracket to ensure the spring
tension is present to hold the contact pad against the O
2
cell.
5. Secure the strut bracket and return wire with four screws and lockwashers.
Make sure the return wire is tightly fastened.
This is the ground side connection for the O
2
cell.
Install sample and exhaust tubes
Procedure
1. See Figure 10-13. Apply pipe thread sealant (Loctite #567) to the
replacement sample tube (C) or exhaust tube (B) pipe threads.
Do not apply sealant to the first turn of the pipe threads.
2. Thread the sample tube (C) or exhaust tube (B) into the housing. Use a pipe
wrench to tighten the tube.
3. If used, install and tighten the in-situ filter (D).
Install eductor
Prerequisites
If installed, the O
2
cell and heater strut assembly (Figure 10-8) must be removed
from sensor housing before you install the eductor.
Procedure
1. Apply pipe thread sealant (Loctite #567) to the external pipe threads of the
eductor (G, Figure 10-18).
Do not apply sealant to the first turn of the pipe threads.
Manual Maintenance and service
00809-0500-4880 December 2022
Rosemount OCX8800A 269
To Next Page
Loading...
