a. Improper Adjustment of the Bowl Rinse Time Control. Improper
adjustment of the bowl rinse time control is one possible cause for the bowl rinse to not
shut off automatically. To test this, use the following procedures.
Turn the bowl rinse time control counterclockwise while the rinse is
If the bowl rinse stops, set the rinse time control for the desired rinse
(a) Turn the control valve clockwise to increase rinse time.
(b) Turn the control valve counterclockwise to decrease rinse time.
(3) If the rinse does not shut off when the bowl rinse time control is fully
counterclockwise, go to procedure b. below.
b. Defective Time Control Valve. If you have tested the bowl rinse time control
and it has not solved the problem, use the following procedures to test for a defective
time control valve.
(1) Remove the time control valve (or the tubing going to the time control
valve for systems as in figure 5-9). The water should shut off immediately.
(2) If the water shuts off, there is an obstruction in the time control valve.
For systems as in figure 5-9, refer to the instructions for needle valves below (refer to
figure 5-11). For systems as in figure 5-10, clean the valve inlet.
Figure 5-11. Time control needle valve.