Remove all dirt and grime from the surface of the fridge - paint will only adhere to clean surfaces.
Mask off areas of the fridge you don't want to paint and lay a dust sheet in the surrounding area to catch any overspray!
To ensure the fridge is ready to be painted, use International Wipe on Multi Surface Primer. Follow instructions on the bottle.
Use International Appliance Paint in Chrome. It's an aerosol so it's quick drying and gives an even professional finish. Follow instructions on the can. You can spray a second coat after 20 minutes drying time.