Emerson Process Management IB106-340 SPS 4000 Maintenance and Component Replacement

Instruction Manual

IB-106-340 Rev. 2.4 April, 2001

Oxymitter 4000

Do not get cement on ceramic diffu- sion element except where it touches the hub. Any cement on ceramic diffu- sion element blocks airflow through element. Wiping wet cement off of ce- ramic only forces cement into pores. Also, do not get any cement onto the flame arrester element.

9.Thoroughly mix cement and insert tip of squeeze bottle into cement port. Tilt bottle and squeeze while simultane- ously turning ceramic diffusion element into seat. Do not get any cement on upper part of ceramic diffusion ele- ment. Ensure complete penetration of cement around 3 grooves in hub. Ce- ment should extrude from opposite hole. Wipe excess material back into holes and wipe top fillet of cement to form a uniform fillet. (A cotton swab is useful for this.) Clean any excess ce- ment from hub with water.

10.Allow filter to dry at room temperature overnight or 1 to 2 hours at 200°F (93°C).

11.Wipe a heavy layer of anti-seize com- pound onto the threads and mating surfaces of the flame arrester, diffusion hub, and probe tube.

12.Assemble flame arrester and diffusion hub with two pin spanner wrenches. Torque to 10 ft-lbs (14 N·m). 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 com- pound to setscrews and tighten with hex wrench.

15.Reinstall probe on stack flange.

6-10 SPS 4000 MAINTENANCE AND COMPONENT REPLACEMENT

These paragraphs describe SPS 4000 mainte- nance and component replacement procedures. Replacement parts referenced are available from Rosemount. Refer to Section 9, RE- PLACEMENT PARTS, for part numbers and or- dering information.

Install all protective equipment covers and safety ground leads after equip- ment repair or service. Failure to in- stall covers and ground leads could result in serious injury or death.

a.Fuse Replacement

The SPS 4000 has a fuse (17, Figure 6-11)on the power supply board (18). Refer to Table 9-3for replacement fuse specifica- tions. Perform the following procedure to check or replace the fuse.

Disconnect and lock out power before working on any electrical components.

1.Turn off power to the system.

2.Remove screw (7, Figure 6-11)secur- ing manifold cover lock (6) and remove the lock.

3.Remove manifold cover (14).

4.Remove fuseholder (16) by pushing in the top and turning 1/4 turn counter- clockwise. Remove fuse (17).

5.After checking or replacing fuse (17), install fuseholder (16) by pushing in the top and turning 1/4 turn clockwise.

6.Install manifold cover (14), and secure with manifold cover lock (6) and screw

(7).

6-16 Maintenance and Service Rosemount Analytical Inc. A Division of Emerson Process Management