That is to collect grease and it should be emptied and cleaned each time they clean the hood.
I've wondered about this for a long time. With a restaurant exhaust hood the usually have a tray attached to the outside of the hood base. It is usually filled with water. I've noticed a pipe type of dealeo going into the exhaust hood air stream. What is this for and where is the water coming from? And most importantly how do I maintain it. Do I dump the water out then rinse it out. I've googled it but I can't find any info. I need some help here. Thanks....Jay
That is to collect grease and it should be emptied and cleaned each time they clean the hood.
When you say,"They clean the Hood" I'm thinking you are referring to the company that power washes the inside of the hood. I've seen those guys doing that. That is typically not the refrigeration company I'm thinking but the carpet cleaner type of company. I'm getting more involved with restaurants so I'm sort of the Bozo on the Bus type of thing. Thanks.....Jay
Yep, that is called a Commercial Kitchen Exhaust Ventilator. There is a shaft between that and the hood down below. Grease that gets on the ventilator is drained to that box to collect it from going onto the roof.
When it rains the water caught in the ventilator also ends up there.
Its supposed to keep grease from getting on the roof.
When it rains, water goes into the hood, goes out the pipe, and into that catch tray. Grease will also run out into the grease tray.
Theoretically, the grease will stay in the tray and the water will evaporate.
Most people just ignore it and never empty it, and some people just go up there from time to time and dump it onto the roof.
Next time you see one of those take a close look at how they're constructed. Therese a baffle or two in them so that the solids sink, the grease floats, and the water passes through the middle and out onto the roof. Kind of like a mini septic tank. Kind of cool.