I had a Deni vacuum food sealer given to me with no directions and/or owner's manual. I would very much like to be able to use this machine and would appreciate it if someone could supply the manual or tell me how to use it. There are no buttons or switches on this model but it does have two lights on the front right corner. One light is labeled seal and is green while the other light is red and is labeled vacuum. Thank you in advance for any help you might be able to give.