Installation manual

Terreon® 54" Circular Deep Bowl Washfountain with Air Metering Valve
TDB3108, WF3208 Installation Instructions
Bradley Corporation • 215-1471 Rev. E; EN 06-915B30 4/6/2007
Metering Air Valve Troubleshooting
Problem: Valve will not shut off.
Cause: Timing mechanism is clogged.
Solution: Clean and inspect timing mechanism:
1. If compressed air is available, blow water and debris from perforated metal sleeve of timing
mechanism.
2. Turn adjusting screw in all the way but do not force screw.
3. Turn adjusting screw out to desired cycle time.
Problem: Valve will not turn on.
Cause: Water is not being supplied to unit.
Solution: Open all stops on mixing valve.
Problem: Timing can not be adjusted for more than 5 seconds.
Cause: There is an air leak
Solution: Check the valve assembly:
1. Check all tubing and fittings for proper assembly.
2. Tighten all screws which hold valve together.
Problem: Pushbutton does not work properly.
Cause: Air volume may not be sufficient to operate valve.
Solution: Check for leaks and lubricate U-cup:
1. Check all fittings for air leaks.
2. Disassemble pushbutton and lubricate U-cup seal (see pushbutton assembly diagram on page 19).
Problem: Valve cycles properly, but water does not form streams and drips from
the streamformer
Cause: Debris has accumulated in flow control assembly.
Solution: Clean and inspect flow control assembly:
1. Remove tubing and tube connector fittings from metering air valve.
2. Inspect flow control and remove debris that may be clogging the assembly.
3. Replace fittings using teflon tape or pipe sealant. Do not get sealant on the flow control.
4. Replace tubing by cutting 1/4" from end of tube.
• Make sure end is square, then insert into tube connector fitting.
Problem: Water is dripping from the streamformers.
Cause: Debris has accumulated on valve seat or orifices.
Solution: Clean and inspect valve seat.
1. Remove screws and disassemble metering valve.
2. Clean valve seat and inspect for deep gouges or scratches. Replace if necessary.
3. Remove all debris that may be clogging center hole of plastic diaphragm assembly.
4. Remove any debris clogging off-center hole in rubber diaphragm.