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Exposed Electrical Conduit on Exhaust Fan
This is an example of exposed wiring on a restaurant exhaust fan.

Does Your Restaurant Exhaust Fan Meet Code

October 28, 2014 Posted by croberts Kitchen Exhaust Deficiencies, Kitchen Exhaust Fans

Most restaurant managers are so busy with the demands of the day to day operations inside the kitchen that they unaware of the potential hazards that are occurring on their roof tops. There are a few simple things to look for that can help you assure your fan is up to code and help you avoid potential down time for your restaurant or damage to your exhaust fan.

First, inspect your up-blast fan (or bowl shaped fan) has a hinge kit installed. The Importance of a hinge kit is to allow access to the vertical duct of your exhaust system by allowing the fan to open to a ninety degree angle. This provides proper access to the duct to clean your kitchen exhaust system properly without harming the mechanics or structural integrity of the fan. A typical restaurant exhaust fan weighs around 125lbs and is made of spun aluminum. The material can be bent very easily in the cleaning process even when extreme precaution is taken.

Next, inspect the electrical conduit on your exhaust fan. You want to look for two things. The first is that the electrical conduit is run externally from the duct curb into the fan housing of the fan see photo below.

Electrical Conduit on Exhaust Fan

This is a properly ran external electrical conduit on a restaurant exhaust fan.

The importance of this is to insure that the wiring for the fan is not exposed to grease build up within the system and keep the wiring from becoming damaged from taking the fan on and off during the cleaning process. The removal of the exhaust fan during cleanings can cause wiring to become exposed and potentially cause a fire or breaker to trip from metal to metal contact. This can cause costly down time for your restaurant.

Secondly, after you have insured that the wiring is ran externally, you need to inspect the integrity of the wiring. The external wiring should be run through the weather proof conduit to protect it from exposure to rain and grease from the system. See Photo Below

 

Exposed Electrical Conduit on Exhaust Fan

This is an example of exposed wiring on a restaurant exhaust fan.

It is very important to make sure that the wiring on your roof top is not exposed to the weather conditions. Wiring that is exposed can cause fires if introduced to grease on the roof top and/or cause the fan to short out at any given time costing your business time and money. 

 NFPA 96 – 7.8.2.1 states that  Rooftop termination shall be arranged with or provided with the following:(8) A hinged up-blast fan supplied with flexible weatherproof electrical cable and service hold-open retainer to permit inspection and cleaning that is listed for commercial cooking equipment. 

NFPA 96 – 8.1.1.1 states that – Approved up-blast fans with motors surrounded by the air stream shall be hinged, supplied with flexible weatherproof electrical cable and service hold-open retainers, and listed for this use. 

Tags: Exhaust FanRestaurant Exhaust Fan
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