Good morning,
we have the same issue in our bakery, not cooling product fast enough.
Production wants to get away with covering the fan with fan covers but I'm against it since all kinds of debris are blown onto the product. Fans are on a cleaning schedule.
I just performed air testing placing petri plates onto the fans during a normal production day.
I also suggested using regular screen doors instead of fan covers to get a better air flow.
What are your thoughts?