How do I properly ground my refrigerator?

The refrigerator must be safely grounded before attempting to use or repair any part of the appliance, as power leakages can cause severe electric shock. Never use gas pipes, telephone lines, or other potential lightning attractors as an electrical ground. If an extension cord is needed, use only a 3-wire cord with a 3-blade grounding plug and ensure any grounding adapter has a fully grounded receptacle box. (Page 3)