It doesn't matter if you are buying commercial kitchen equipment for a restaurant, or any other food-related business, there are certain things that you should consider before purchasing your kitchen equipment. It is important to consider your business type and sales volume. You should buy at least two commercial-grade high volume slicing machine if you own or plan to open a sandwich restaurant. One machine will be used to slice meat, and the other one for making cheese.
You should ensure that the commercial kitchen equipment you purchase has stainless steel surfaces. Stainless steel is safer and easier to maintain. Look carefully at the equipment in your kitchen. Make sure any parts that may come into contact with food can easily be taken apart and cleaned either by hand or in the dishwasher. There is no chance of food borne disease being left behind if you aren't able clean all the corners.
There are other things you should consider when buying commercial equipment. Restaurants have to make sure they are not only saving money, but keeping their customers happy. You may be tempted to buy less expensive equipment. However, it's not always a good idea. Cheap kitchen equipment will eventually lead to higher costs in the end.
One reason why purchasing cheap commercial kitchen equipment doesn't make sense is because you may be buying obsolete products. You will need to replace the equipment more often and you run the risk that the parts won't be available. They consume more energy than the newer equipment, are more difficult to clean and will cost you more over time.