Bradley AST4 Operation manual

1 of 3 Bradley • 215-1369-33 Rev. A: ECN 14-03-005B
Operation and Service Guide: Ablution
P.O. Box 309 •Menomonee Falls, WI 53052-0309
1.800.BRADLEY •Fax: [phone] •bradleycorp.com
Metering Air Valve
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 adjusted from
5–60 seconds.
A
Remove filter cap and use a screwdriver to tighten or
loosen the timer (see illustration at right). Turning the
timer clockwise increases the time; turning the timer
counterclockwise decreases the time.
BContinue to adjust until the timer is set at desired
length.
CReplace filter cap over the timer.
Water Tube
Connector
Air
Valve
Filter
Cap
Air Tube
Connector
A
Push in the orange manual release button while
pulling the tube out (see illustration at right) to
disconnect the tube at the connector. No tools are
needed.
BTo correct a leak, press tubing firmly into the
connector and make sure it is seated.
C
If leak persists, remove tubing from the fitting, and
trim the tubing end square with a razor-sharp knife.
If leak continues, replace the fitting or contact your
Bradley representative for assistance.
Manual
Reset
Button
Air Valve
Tubing
Sealing
Ring
Tube
Stop
Gripping
Ridge
Locking
Slope
1
2
Adjust Air Valve Meter Time
Tube Connection Leaks
Tempered Line Adapter Option
Part no. S39-804
(replaces S59-4000 if tempered line
is used)
Strainer
(173-028)

2 of 3 Bradley • 215-1369-33 Rev. A: ECN 14-03-005B
Operation and Service Guide: Ablution
P.O. Box 309 •Menomonee Falls, WI 53052-0309
1.800.BRADLEY •Fax: [phone] •bradleycorp.com
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Item Description
AST 4 Valve Kit
S65-260
Repair Kit (Upper)
S65-261
Repair Kit (Lower)
S65-262
Qty.
1 Diaphragm 1 — 1
2 Armature 1 — 1
3 Spring 1 — 1
4 AST 4 Valve Upper Body 1 — —
5 Spring 1 1 —
6 Magnet / Diaghragm Assembly 1 1 —
7 AST 4 Valve Cover 1 1 —
8 AST 4 Valve Clamp Nut 1 1 —
9AST 4 Valve Timer Assembly 1 — —
10 O-Ring, #2-012 1 — —
11 AST 4 Valve Timer Cover 1 — —
12 Screw, #8 x 7/8" 3 — —
13 Compression Nut, 1/8" Tube 1 1 —
AST4 Valve Repair Kits

3 of 3 Bradley • 215-1369-33 Rev. A: ECN 14-03-005B
Operation and Service Guide: Ablution
P.O. Box 309 •Menomonee Falls, WI 53052-0309
1.800.BRADLEY •Fax: [phone] •bradleycorp.com
Problem Cause Solution
Valve will not shut off. Timing mechanism is clogged. Clean and inspect timing mechanism.
1. If compressed air is available, blow water and debris from timer
cover of timing mechanism.
2. Turn adjusting screw out all the way. Clean and inspect screw
and valve body.
3. Turn adjusting screw in to desired cycle time.
Valve will not turn on. Water is not being supplied to unit. Open all stops on mixing valve.
Water pressure is over 80 PSI. Install a pressure reducing valve.
Failed diaphragm/magnet assembly. Unscrew the valve clamp nut on valve. Remove valve cover.
Gently press the diaphragm. The valve should activate. If not,
replace the diaphragm/magnet assembly.
Timing can not be adjusted
for more than 5 seconds.
There is an air leak. Check the valve assembly.
1. Check all tubing and fittings for proper assembly.
2. Tighten cap and nut on 1/8" tubing.
Push button does not work
properly.
Air volume may not be sufficient to
operate valve.
Check for leaks and lubricate U-cup.
1. Check all fittings for air leaks.
2. Disassembly push button and lubricate U-cup seal.
Water is dripping from the
spouts or shower heads
Debris has accumulated on valve
seat or orifices.
Clean and inspect valve seat.
1. Remove screws and disassemble metering valve.
2. Clean valve seat and inspect for deep gouges or scratches.
Replace valve body if necessary.
3. Remove any debris clogging off-center hole in rubber diaphragm.
Metering Air Valve Troubleshooting