Final answer:
The developer and fixer solutions in an automatic processor should typically be changed every 3 to 4 weeks, with daily and weekly checks for maintenance. The exact frequency can depend on the volume of use and the manufacturer's recommendations. So, the correct answer is 4.Every 3 to 4 weeks.
Step-by-step explanation:
The frequency at which developer and fixer solutions in an automatic processor should be changed can vary based on the volume of use and manufacturer's instructions.
However, the general recommendation is to change these solutions at minimum frequencies to ensure optimal image quality and processor performance.
If the processor is used heavily, then the solutions might need to be changed more frequently than in an environment with less frequent use.
For most automatic processors:
The developer solution should be changed every 3 to 4 weeks.
The fixer solution should be changed at similar intervals, every 3 to 4 weeks.
Additionally, daily and weekly maintenance checks should be performed to monitor the activity and replenish the solutions as needed.
Always refer to the specific guidelines provided by your equipment's manufacturer to determine the exact frequency for changing these solutions in your facility.
So, the correct answer is 4.Every 3 to 4 weeks.