Keeping equipment in good shape should be a priority for all small business owners. As the saying goes an ounce of prevention is worth a pound of cure. Taking a short cut on the maintenance can make you pay even more in the long run. For example, if you want your extractor fan to go the distance, you need to make sure it is properly maintained and serviced. In fact, some 70 percent of commercial kitchen fires start because of faulty ducting and ventilation. That’s because grease and fat tend to build up, making kitchen duct cleaning a necessity.