Step 7. Open the Diaphragm Chamber
Supply Control Valve and allow time for
full pressure to build up in the Diaphragm
Chamber.
Step 8. Operate (open) the Manual
Control Station to vent trapped air from
the Diaphragm Chamber. If necessary,
first open the hinged cover, and then
fully pull down on the operating lever.
SLOWLY close the operating lever, by
pushing it up, after aerated water