Using this Samsung bar fridge thermostat is straightforward. First, make sure your fridge is unplugged to avoid any electrical hazards. Then, carefully remove the old thermostat by detaching the wires from the 6.4mm spade terminals. After that, align the new thermostat with the mounting holes that are 54mm apart and secure it in place. Connect the wires to the spade terminals of the new thermostat. Once everything is connected, plug your fridge back in. As for maintenance, keep the thermostat clean and free from dust. You can use a soft, dry cloth to gently wipe it. If you notice any problems with the temperature control, it's a good idea to check the connections first. And always remember to handle the capillary tube carefully as it's 725mm long and can be easily damaged.