Rosemount Oxymitter 5000, Инструкция по эксплуатации

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Hazardous Area Oxymitter 5000
9-22
Instruction Manual
IM-106-350C, Rev 2.2
July 2008
9. Thoroughly mix cement and insert tip of squeeze bottle into cement
port. Tilt bottle and squeeze while simultaneously turning ceramic
diffusion element into seat. Do not get any cement on upper part of
ceramic diffusion element. Ensure complete penetration of cement
around 3 grooves in hub. Cement should extrude from opposite hole.
Wipe excess material back into holes and wipe top fillet of cement to
form a uniform fillet. (A Q-Tip is useful for this.) Clean any excess
cement from hub with water.
10. Allow filter to dry at room temperature overnight or 1 to 2 hours at 93°C
(200°F).
11. Wipe a heavy layer of anti-seize compound onto the threads and mating
surfaces of the flame arrestor, diffusion hub, and probe tube.
12. Assemble flame arrestor and diffusion hub with two pin spanner
wrenches. Torque to 14 N·m (10 ft-lbs). Secure with hub retaining
setscrew.
13. On systems equipped with abrasive shield, install dust seal gaskets with
joints 180° apart.
14. Reinstall vee deflector, orienting apex toward gas flow. Apply anti-seize
compound to setscrews and tighten with hex wrench.
15. Reinstall probe on stack flange.
Contact and
Thermocouple Assembly
Replacement
See Figure 9-11.
1. Remove the cell per "Cell Replacement", steps 1 through 5.
2. Remove the heater strut assembly per "Heater Strut Replacement",
steps 3 through 8.
3. Use a pencil to mark locations of the spring clips on the ceramic rod of
the contact and thermocouple assembly.
4. Squeeze the tabs on the spring clips and pull the contact and
thermocouple assembly out of the heater strut. Retain the spring clips
and spring; replace if damaged.
5. While very carefully handling the new contact and thermocouple
assembly, lay the old assembly next to the new one. Transfer the pencil
marks to the new rod. Throw away the old contact and thermocouple
assembly.
6. Carefully guide the new contact and thermocouple assembly through
the spring, spring clips (held open by squeezing the tabs), tube
supports, and heater support of the heater strut assembly until the
spring clip reaches the pencil mark.
7. Install the cell per the instructions in "Cell Replacement", steps 7
through 12.
Do not get cement on ceramic diffusion element except where it touches the hub. Any
cement on ceramic diffusion element blocks airflow through element. Wiping wet cement off
of the ceramic only forces cement into pores. Also do not get any cement onto the flame
arrestor element.