Stoelting U421 Operator's Manual page 21

A.6
Turn the pump on and feed the other
end of the tan hose into the left side
of the black cover.
Face the natural curve of the tan hose
towards the outside of the cover to
prevent the hose from looping around
twice.
A.7
As the hose feeds through the cover, orient the mix
sensor at an angle so the sensor wire is not kinked
or bent at a sharp angle.
Then turn the pump off .
Connect the hose to the check valve block.
A.8
Press and hold the Pump
buttons until the pump hose
reset message appears on
the screen.
A.9
Continue normal cleaning and sanitizing procedures.
513725 REV.0 U421-I2 & U431-I2 OPERATOR'S MANUAL
Section 3: Maintenance
21