Instruction Manual

IB-106-340 Rev. 2.4 April, 2001

Oxymitter 4000

7.Tag and unplug solenoid (13 or 20) leads from power supply board (18). Refer to Figure 6-12.Calibration gas 1 solenoid wires connect to connector J5, and calibration gas 2 solenoid wires connect to connector J4.

8.Remove the top nut of solenoid (13 or 20, Figure 6-11)securing the coil as- sembly and washer to the base. Re- move the coil assembly, including the leads, and washer. Place a 13/16 in. deep socket over the solenoid base and remove.

When installing a solenoid, do not over-tighten. Damage to the solenoid may occur.

9.Install the new solenoid base. Be careful not to overtighten. Install the new washer and coil assembly and se- cure with the top nut. Connect the leads to the proper connector on power supply board (18). Refer to Figure 6-12if necessary.

10.Carefully install the board and spacer assembly into manifold (5, Figure 6-11)by aligning spacers (9) with the mounting holes on the manifold and securing with screws (11). Ensure O-rings (8) are installed between the spacers and the manifold surface.

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

(7).

12.Turn on the calibration gases at the cylinders.

d.Pressure Switch Replacement

Use the following procedure to replace pressure switch (12, Figure 6-11).

1.Turn off power to the system.

2.Shut off the calibration gases at the cylinders.

3.Remove screw (7) securing manifold cover lock (6) and remove the lock.

4.Remove manifold cover (14).

5.Remove two screws (11) attaching spacers (9) to manifold (5).

6.Being careful not to disconnect the board wiring, carefully lift the board and spacer assembly from manifold (5) and set aside. Do not lose O-rings (8) from the bottom of spacers (9).

7.Tag and remove the leads from pres- sure switch (12).

8.Place a 1-1/16 in. 6-point socket over pressure switch (12) and remove.

When installing the pressure switch, do not overtighten. Damage to the solenoid may occur.

9.Install new pressure switch (12). Be careful not to overtighten. Connect the leads to the proper terminals on the pressure switch.

10.Carefully install the board and spacer assembly into manifold (5) by aligning spacers (9) with the mounting holes on the manifold and securing with screws (11). Ensure o-rings (8) are installed between the spacers and the manifold surface.

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

(7).

12.Turn on the calibration gases at the cylinders.

e.Check Valve Replacement

Check valve (19, Figure 6-13)may stick or become plugged over time. Replace when necessary. If condensation deposits are noted upon removal, consider insulating the check valve.

6-20 Maintenance and Service

Rosemount Analytical Inc. A Division of Emerson Process Management

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Emerson Process Management IB106-340 instruction manual Pressure Switch Replacement, Check Valve Replacement