Page 26
Rev. 1/2019
www.willoughby-ind.com
Installation & Operation Manual
Aquafount
®
180° Washfountain
WAF-5403 Series / WAF-5404 Series
Willoughby Industries, Inc.
TOLL FREE
(800) 428-4065
● LOCAL
(317) 875-0830
● FAX
(317) 875-0837
I. Valve will not open or deliver water
A. Check the plastic tubing that runs from the pushbutton actuator to the pneumatic valve for
air leaks.
B. Make sure the checkstop on the supply to the valve is fully open. Do not partially close the
checkstop for any reason as it is not a throttling valve. The checkstop should be fully open
(normal operation) or fully closed (when servicing the valve).
C. Close checkstop and then inspect the strainer in the supply line (installed after the
checkstop) to make sure the strainer is not blocked or partially blocked, prohibiting water
flow.
II.
Valve will not shut off
A. Separate valve motor from casting by removing the four (4) #8 screws.
B. Inspect the water diaphragm assembly to see if bypass hole in diaphragm is blocked.
Remove any debris by blowing on diaphragm or using force of air. Do not use any tool
(such as straight pin) to remove any debris. Enlarging the hole will shorten or make for
erratic cycling.
C. Check the metering screw on the timer assembly to make sure the adjustment screw is
not closed too tightly. To reset, back out adjustment screw (counterclockwise) about 1-1/2”
turns, and adjust for the desired cycle.
III. Valve continues to trickle or partially deliver water after cycle is over
A. Inspect seating area on valve base to make sure no debris, pitting, or scoring is present.
B. Clean seat or replace seat as necessary.
C. Inspect seating area of diaphragm for debris, clean as necessary. If debris has caused
permanent indentations in the rubber, it may have to be replaced.
After all of the above steps have been followed, if there is still no water coming out of the spray
head, there may be a damaged or defective part (see installation notice in the beginning of this
manual).
Troubleshooting - Pneumatic Valves
