Bradley TDB3108 Troubleshooting Guide download pdf (Page 67)

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: Push button 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.

Problem: Water is dripping from the aerator.

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.

Parts and Service Guide Bradley Washfountains

2910 Burnet Ave ~ Syracuse, NY 13206 ~ (800) 875-7952 ~ Fax: (315) 422-9125 ~ email: sales@vdcspecialtypl umbingparts.com

VDC SPECIALTY PLUMBING PRODUCTS W eb: vdcspecialtyplumbingparts.com

VESCERA DISTRIBUTING COMPANY, Inc.

67FOR MORE INFORMATION OR TO PLACE AN ORDER CALL 800-875-7952

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Bradley TDB3108 Troubleshooting Guide Page 67