Air intake plenum

Air pressure switch

Filament transformer

Photo resistor direct view assembly

Magnetron

Filament transformer bracket

Die casting

RF screen

Figure 27. I300M/I301M Irradiator Component Location

Direct View Photoresistor Removal/Replacement

1.Remove the housing as described in the previous section.

2.Unplug the photoresistor 3-circuit connector (P30) from the photoresistor PWB.

3.Remove the two M4 screws securing the photoresistor mounting block to the casting and remove the photoresistor assembly.

4.Remove the single screw holding the photoresistor PWB to the mounting block.

Installation, Operation, and Maintenance Manual # 509252 Rev R

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