1.   First touch and hold the ends of the probes together and turn the adjustment screw until the needle reads exactly zero on the ohms scale.

2.   If you experience difficulty, you can make minor adjustments to the door alignment by turning the adjustment screws in the top and bottom pivot brackets.

3.   The adjustment screw on the pressure valve can be turned to regulate the water pressure coming into the house.

4.   Unlike the other valves, this one has an adjustment screw, not a handle, on top.