TROUBLESHOOT THE AUTOMATIC BOWL RINSE SYSTEM
The automatic bowl rinse system consists of an air-actuated water relay valve, a
momentary two-way valve, and a needle valve. A single touch of the two-way valve
provides a steady stream of water for rinsing the cuspidor bowl. There are two types of
systems with which you may work: an automatic bowl rinse system used with the filter-
regulator utilities system, shown in figure 5-9, and the automatic bowl rinse used with
the utility module system, shown in figure 5-10. Flipping the two-way valve applies air
pressure to the signal inlet on the water relay, thus opening the relay and allowing water
to flow from the nozzle. The signal air pressure begins to bleed down as air exhausts
through the time control valve. The setting of the time control valve determines the
speed with which the pressure bleeds down. When the signal air pressure drops
sufficiently, the water relay closes and the cycle ends. The bowl rinse time is factory
pre-set at 25-30 seconds. If the bowl rinse does not shut off automatically, you must
troubleshoot the malfunction using the following procedures.
Figure 5-9. Filter-regulator utilities system.
Figure 5-10. Utility module system.