The industrial suction cup uses a small pump to maximize the suction power, and includes a red ring to assist in both installation and maintenance. Firmly attach the suction cup to your desired location, making sure the arm is in the proper upright position (~ 12 0’clock ). Pump the suction cup until you see the red line disappear. Once the red line is completely gone, an additional 3-6 pumps will secure the suction cup for maximum performance. The red line is a warning that the pump is beginning to lose suction. Immediately pump the unit 3-6 pumps or until the red line is no longer visible. Always check the mounting system at the beginning of the day and between patients. We recommend that you remove the pump at the end of the day to prevent it from losing suction and falling to the floor while it is not in use.