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88 F300S/F300SQ Ultraviolet Lamp System
5. Remove and discard the PWB and inspect the UV filter lens for damage.
6. Replace the photoresistor and UV filter lens assembly.
7. Reinstall the housing.
Figure 28. Photoresistor Assembly for Direct View (I300M)
Filament Transformer Removal/Replacement
1. Remove the irradiator housing.
2. Cut the cable ties and slide the PVC tubing off the magnetron connections.
3. Remove the filament terminal screws. Disconnect the leads at the primary
terminals. Remove the two anchor screws holding the transformer to the side
rail, and remove the transformer.
4. Replace the transformer by reversing the process.
Photoresistor mating
connector
Photoresistor
block mounting
holes
Photoresistor
mounting
block
Photoresistor PWB
UV filter lens
Photoresistor