Bradley MF2922 - Manual (Page 18)

Terreon ® Multi-Fount Washfountains
Parts and Service Guide
18 Bradley Corporation • 215-1447 Rev. F; EN 07-005A 1/30/2008
Troubleshooting BIR3 Components
CAUTION: Turn off water supplies to unit before troubleshooting.
Problem: An individual operating station drips and fails to shut off.
Cause: There is debris trapped between the diaphragm and the valve seat.
Solution: Remove debris between diaphragm and the valve seat.
Disconnect the plug from the battery to the circuit board of the problem valve. Remove the three #8 Phillips-head
screws that hold the solenoid valve assembly together. Be careful not to lose the armature or spring (see previous
page). Remove the diaphragm. Remove any particles that are trapped between the diaphragm and the valve seat.
Rinse off the diaphragm and inspect for damage. Make sure the center orifice and both small side orifices are open.
Reassemble in reverse order, being careful not to overtighten the Phillips-head screws or you may crack the plastic
valve body. Tighten until the armature plate makes contact with the plastic body. Reconnect the battery plug per dia-
gram. Turn on water supplies to the unit.
Problem: An individual operating station fails to turn on or off.
Cause: Excessive line pressure.
Solution: Install Pressure Reducing Valve.
Check the static line pressure. If the pressure exceeds 80 psi, install a pressure reducer valve at the street main.
Excessive line pressure (over 60 psi) will shorten the life of any valve.
Problem: An individual operating station fails to turn on or off.
Cause: A dead or faulty battery.
Solution: Test the station to determine cause and replace battery if
required.
Disconnect the plug from the battery to the circuit board of the problem valve.
Disconnect the plug from the battery to the circuit board of an adjacent valve.
Connect the battery plug from the adjacent working valve to the problem valve.
Wait for ten seconds. Activate the problem station’s sensor ten times. The station
should turn on. If the station turns on, and cycles normally, replace the battery.
Cause: Faulty
sensor eyes.
Solution: Test station to determine cause; replace sensor eyes if required.
Disconnect the sensor cable from the circuit board of the problem valve.
Disconnect the sensor cable from the circuit board of an adjacent working valve.
Connect the sensor cable from the adjacent working valve to the problem valve.
Activate the problem station’s sensor. The station should turn on. If the station turns
on and cycles normally, replace the sensor eyes.
Cause: Faulty solenoid valve.
Solution: Test station to determine cause; replace solenoid valve if required.
Remove the screw, circuit board and standoff from the problem valve. Remove the
battery holder. With a good working battery, briefly contact the solenoid valve
directly with the battery as shown in the Open Valve figure. The contact should
cause the valve to open. With the battery holder removed, briefly contact the sole-
noid valve with the battery in the position shown in the Closed Valve Figure. This
should cause the valve to close. If the valve does not operate when directly contact-
ed with a good battery, and the solenoid valve has already been cleaned as outlined
at the beginning of this troubleshooting section, replace the solenoid valve.
If problems persist:
Pass your hand in front of the problem station, while at the same time looking to see if the indicator light on the cir-
cuit board flashes (the indicator light is located near the hole in the circuit board where the standoff is mounted). If
it does not flash, and the battery and sensor eyes have already been tested as outlined above, the problem may be
with the circuit board. Make a note of the numbers printed on the circuit board, then contact your Bradley represen-
tative for assistance.
OPEN VALVE
CLOSED VALVE