Switch (A) on hydro lever is a three-function switch used to select right-hand and left-hand foam markers. The foam marker is off when the center switch is pressed.
The foam output is adjustable by turning the rate control knob (B) on the foamer power unit. Turning the rate control knob clockwise decreases the amount of foam in low position. Turning rate control knob counter-clockwise increases the foam rate. When the foam marker control switch in SPRAYSTAR
display is in "AUTO LO" or "MAN LO" position, the foam rate can be adjusted from zero foam output to maximum output. When foam marker control switch in SPRAYSTAR
displays is in "AUTO HI" or "MAN HI" position, maximum foam output is supplied.
A-Switch
B-Rate Control Knob
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