Final answer:
First, check for and clear any clogs in the fryer filter media or pipe, replace the filter if necessary, and ensure the oil is at the proper temperature for effective flow.
Step-by-step explanation:
When the fryer filter returns oil slowly, the first action you should take is to check for any clogs in the filter media or the filter pipe. Over time, debris from the frying process can build up and impede the flow of oil. If a clog is found, it needs to be cleared. If the filter media is saturated and cannot be cleaned effectively, it may need to be replaced. It's also important to check the oil temperature, as excessively cold oil can be more viscous and flow more slowly through the filter. Maintaining a proper cleaning and maintenance schedule can help prevent issues with the fryer filter and ensure efficient operation.