Using this Westinghouse bar fridge thermostat is easy. Just attach the capillary to the evaporator and mount it using the holes that are 55mm apart. When you're installing it, make sure to connect the 4.8mm spade terminals correctly. As for precautions, avoid any physical damage to the thermostat and its capillary. Keep it away from moisture. For maintenance, you can check the connections every few months to make sure they're secure. If you notice any issues, don't hesitate to contact us. With our 25 - year experience in supplying appliance parts, we're here to support you.