Sloan manufactures automatic flush valves for rest room toilets and urinals. An invisible beam of light emits from a sensor on the valve. When a user approaches the urinal, he breaks the beam of light and places the valve in a hold mode. As soon as the user moves out of the light beam to leave the urinal, the toilet automatically flushes to keep the bowl clean and sanitary. An automatic flush valve needs adjustments of the electronic eye range and the water flow to work properly.
Insert a screwdriver into one screw on the top of the flush valve cover. Turn the screw counterclockwise to loosen it, and pull it straight out to remove it. Repeat this process to remove the second screw.
Pull the cover straight up and off the flush valve. Insert the range adjustment tool into the adjustment screw.
Turn the screw a few degrees clockwise to increase the range or counterclockwise to decrease the range. Make small incremental adjustments.
Replace the cover on the flush valve. Insert the two screws, and tighten them clockwise with a screwdriver. Stand in front of the urinal in the light beam, then step away to test the adjustments. If the urinal does not flush, increase the range. If the urinal flushes while approaching it, decrease the range.
Insert a screwdriver in the water control stop screw on the right side of the flush valve.
Turn the screw clockwise to reduce the flow of water on each flush. If the urinal overflows or splashes water onto the lip of the urinal, there is too much water flow.
Turn the screw counterclockwise to increase the flow of water on each flush. Increase the flow if the urinal does not have enough water flow to cleanse the bowl completely after each use.
If the flush valve blinks four times quickly when a user nears it and does not flush after he leaves, the batteries are low and need replacing. Check all adjustments by standing in the light beam, moving away and then observing the flush timing and water level.