Sentry
™
Washfountain
Parts and Service Guide
24
Bradley Corporation • 215-1472 Rev. F; EN 06-915
2/12/07
Air Metering Valve (AST4) Part 1 — Adjustment
Adjusting Air Metering Valve (Hand-operated pushbutton only)
NOTE: The air valve timer is located next to the tube connector on the air valve body. The timer is
capped with a filter to prevent dirt build-up on the timer. The air valve timing can be adjusting from
0–45 seconds.
1. Adjust the metering timing, if necessary, as outlined below:
• Unscrew the timer cover and use a screwdriver to tighten or loosen the timer. Turning the
timer clockwise increases the time; turning the timer counterclockwise decreases the time. Be
careful not to overtighten as the timer seat can be damaged.
• Continue to adjust until the timer is set at desired length.
• Replace the timer cover over the timer.
TIMER ASSEMBLY
TIMER COVER
