4.Remove the extrusions. While holding the extrusion inside the casting, remove the four screws securing the extrusion to the casting. Repeat for the extrusion on the opposite side. Discard the old extrusions and the RF gaskets behind each.

5.Install the gasket assemblies (with extrusions) with the mesh facing outward toward the RF screen (at the bottom of the irradiator) along with the two cross-guide (short) gaskets behind each assembly. Install the replacement extrusions using the same mounting screws. The extrusions should be positioned flush to the casting and as far from the face of the lamp as the mounting screws allow. Tighten the screws to 2.5 N-m (22 inch-lbs.) using a torque-limiting screwdriver.

I310M/I311M Irradiator Housing Removal/Replacement

The irradiator enclosure is removed as follows:

1.Disconnect the cables from J10 and J11.

2.Place the irradiator (screen down) on a clean, level surface.

3.Remove two M3 flat head screws from each side of irradiator housing.

4.Remove four M5 truss head screws that secure the housing to the casting.

5.Remove two M5 truss head screws that secure the perforated panel to the front of the irradiator housing.

6.Disconnect the pressure switch tubing from the perforated panel and remove the panel.

7.Unthread the large plastic nut that secures the J10 connector to the housing, and push the connector into the housing.

8.Lift the housing straight up to view the interior components of the irradiator, as shown in Figure 39 on page 101.

9.Reverse these steps to reassemble.

I310M/I311M Scatter View Photoresistor Removal/Replacement

Figure 39 on page 101 shows the I310M/I311M Irradiator component locations.

1.Remove the irradiator housing.

2.Unsolder the photoresistor lead wires (blue wire next to the diode and a blue/white wire at the top terminal.)

3.Remove the two M5x10 mm photoresistor fastening screws and remove the photoresistor assembly.

4.Reverse these steps to replace the photoresistor assembly.

100F300S/F300SQ Ultraviolet Lamp System