Controls
When the Control Rod slides forward, the Check Ball Valve will seat and will not allow water into the outer diaphragm
cavity (see figure 6). The water that was in the outer diaphragm cavity is vented from around the rod as it is slid
forward. The diaphragm is allowed to expand and allows water to reach the turbine and the sprinkler.
The control Rod Stem is then turned up and the machine is ready for work (see figure 7). Notice that the Control Rod
Latching Spool is now in position to catch on the Latching Pawl when the rod is pushed into the machine.
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Figure 6. The valve is open and the Control Rod Stem is down.
Figure 7. The valve is open and the Control Rod Stem is up.This is the normal operating position.
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