Bradley SN2005/TT Manual De Instalación página 10

SN2005/TT
Troubleshooting – Solenoid Valve
Turn off water supplies to the unit before troubleshooting.
Item Qty. Part No.
1 1 118-307 Valve Body, 1/4" Closed
1 1 118-307A Valve Body, 1/4" Thru
2 1 269-983 Diaphragm
3 1 269-577 Armature
4 1 269-578 Spring
5 1 269-1729 Armature Housing
6 1 269-1730 Clamp, Armature Housing
7 1 269-579 Coil, Solenoid Valve
8 3 160-447 Screw, #8 x 5/8
9 1 125-165 O-Ring, #2-013
10 1 110-231 Compression Nut 1/4" Tube
Problem Cause
An individual Debris is trapped
operating between the
station fails diaphragm and
to shut off the valve seat .
and drips .
An individual A failed coil for
operating the valve or
station fails loose electrical
to turn on . connection to the
terminal .
10
S65-113
Description
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X
X
X
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-
-
-
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Remove debris between diaphragm and the valve seat .
1 . Remove the three #8 Phillips-head screws that hold the solenoid valve assembly together .
Be careful not to lose the armature or spring .
2 . Remove the diaphragm . Remove any particles that have been 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 .
3 . Reassemble in reverse order (do not overtighten the Phillips-head screws or the plastic
valve body may crack) . Tighten until the armature plate makes contact with the plastic body .
4 . Reconnect the wiring .
Test the station to determine the cause .
1 . Disconnect the wires from the coil of an adjacent valve . Disconnect the wires from the
problem valve and reconnect to the adjacent valve .
2 . Turn on electrical and water supplies to the unit . Pass your hand in front of the sensor of
the problem station, and the adjacent station should turn on .
If the adjacent station turns on and cycles normally, replace the coil on the problem valve .
If the adjacent valve fails to turn on, inspect the wires from the sensor cable and do the following:
• make sure there are no breaks and that the fully insulated disconnect terminals are
firmly crimped in place;
• turn off the electrical and water supplies;
• reconnect to the adjacent valve and turn on the water supplies to the unit;
• pass your hand in front of the sensor . If the station still fails to turn on, replace the
sensor .
10/20/2014
Repair Kits
S07-067 S07-067A
(Closed (Thru
Body) Body)
X -
- X
X X
X X
X X
X X
X X
X X
X X
X X
- -
Solution
Bradley • 215-1760 Rev. L; ECN 14-00-007
Installation
8
7
8
6
5
4
3
2
1
9
10