Task # 7:
Clean Underflow Orifice.
Turn the Hand/Off/Auto switch to the “Hand” position. This will put the
system in By-Pass mode so that the wash does not need to be closed.
Locate the orifice housing and loosen the two unions holding it in place.
Visually inspect the orifice to ensure it is not plugged. If plugged, clean
as needed.
Inspect the underflow piping and clear it of any obstructions or solids
which may have settled.
Replace the orifice and retighten the unions.
Return the Hand/Off/Auto switch to the “Auto” position and prime the
pump with the Automatic Prime function.
With the machine operating check the orifice for leaks.
Task # 8:
Check Motorized Ball Valve Operation
Ball Valve
status-Green
indicates wash
activation
Ball valve status indicator
with wash activation
Underflow
Orifice
Clean Underflow Orifice and Housing
Underflow
Orifice
housing
Underflow
piping
Location of Underflow Orifice
