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Model 2000
Disassembly Instructions and
Troubleshooting

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Summary of Contents for Superior 2000

  • Page 1 Model 2000 Disassembly Instructions and Troubleshooting...
  • Page 2 Index Adaptor Disassembly Instructions (6-9) Removing Adaptor from Anti-siphon Body (4,5) Parts, Sub-Assemblies, and Repair Kits (17) Solenoid Disassembly Instructions (2,3) Troubleshooting: • Valve will not close (10-12) • Valve will not open (14) • Water leaks out around flow-control stem (16) •...
  • Page 3 Solenoid Disassembly Instructions 1. Unscrew and remove retaining 2. Using a flathead screwdriver, nut from solenoid post and slide unscrew and remove solenoid coil and U-frame off of solenoid post from top of adaptor. post.
  • Page 4 Solenoid Disassembly Instructions Solenoid cavity: The center port is 3. Solenoid plunger will drop out of the exhaust port. The other port plunger tube as post is removed connects the solenoid cavity to the from solenoid cavity. diaphragm chamber.
  • Page 5 Removing the Adaptor from the Anti-siphon Body 1. After shutting off water supply to 2. Using channel locks, remove the adaptor, remove solenoid anti-siphon cap from valve body. retainer nut, coil, and U-frame from solenoid post.
  • Page 6 Removing the Adaptor from the Anti-siphon Body 3. Unscrew manual bleeder a few 4. Apply a wrench to hex portion turns to relieve pressure from (neck) of adaptor and unscrew it the top of the diaphragm. from the valve body.
  • Page 7 Adaptor Disassembly Instructions 1. Use a 7/16” wrench to apply to 2. Remove seat disc, disc holder shaft and 9/16” wrench to unscrew and spring from the shaft. seat disc retaining nut.
  • Page 8 Adaptor Disassembly Instructions 4. Lift top straight up until metering 3. Using a 7/16” wrench, remove rod clears the top of the diaphragm bolts from top of adaptor. shaft. It may be necessary to pry the top loose from lower housing using a flathead screwdriver.
  • Page 9 Adaptor Disassembly Instructions 5. Lift and remove diaphragm 6. To disassemble diaphragm assembly from lower diaphragm assembly, use a 7/16” wrench to housing. hold shaft, and 9/16” wrench to remove nut at top of diaphragm shaft.
  • Page 10 Adaptor Disassembly Instructions 7. To remove flow control stem from top, first use a flathead screwdriver to turn the flow control stem as many turns as possible in clockwise direction. Next, unscrew the flow- control stem from the underside of the top.
  • Page 11: Troubleshooting

    Troubleshooting PROBLEM: Valve will not close CAUSE #2: CAUSE #1: Malfunctioning solenoid Debris in valve body or debris embedded Solenoid plunger is unable to seal exhaust port in rubber seat disc prevents rubber seat disc due to debris in solenoid chamber or plunger from seating onto brass seat in anti-siphon being stuck in plunger tube and unable to drop.
  • Page 12 Troubleshooting PROBLEM: Valve will not close CAUSE #3: CAUSE #4: Torn Diaphragm Open manual bleeder. If no water exhausts from manual bleeder, the likely SOLUTION: cause is a buildup of minerals on the Disassemble valve and replace metering rod that is preventing water diaphragm from entering the diaphragm chamber.
  • Page 13 If that is not possible, then it is recommended that a model 850-DI be used in place of the model 2000. This will necessitate replacing the anti-siphon valve body as well. The model 850-DI, shown is photo at right, has no minimum flow requirement.
  • Page 14 Troubleshooting PROBLEM: Water weeps past the valve and seeps out of the lowest head CAUSE #1: CAUSE #2: Small debris under rubber seat disc or If there is no evidence of debris or pits in pitted rubber seat disc. the rubber seat disc, the likely cause is that SOLUTION: the nut at top of diaphragm assembly is loose allowing water to seep past the...
  • Page 15 Troubleshooting PROBLEM: PROBLEM: Valve will not open when energized. Valve will not open or only opens part way CAUSE #1: when energized. Solenoid is not receiving power CAUSE #2: SOLUTION: Enlarged inlet orifice at bottom of Place your fingers around the solenoid diaphragm shaft is allowing water to enter coil to see if it is receiving power.
  • Page 16 Troubleshooting PROBLEM: PROBLEM: Water leaks out around manual bleed Water leaks out around manual bleed screw. valve. CAUSE #2: CAUSE #1: Bleed screw cannot be screwed all the Damaged o-ring on bleed screw. way down due to disappearing threads in SOLUTION: opening.
  • Page 17 Troubleshooting PROBLEM: PROBLEM: Water leaks out around flow control stem. Water leaks out between adaptor and anti-siphon body. CAUSE: CAUSE: Damaged o-ring on the flow-control stem. Damaged body fiber washer. SOLUTION: SOLUTION: Remove flow-control stem from bonnet Replace damaged fiber body washer and replace o-ring.
  • Page 18 Parts, Sub-Assemblies, and Repair Kits Solenoid Coil (24 VAC): 16008 Solenoid Stem and Plunger Assembly: 16010-2A Solenoid Assembly (24 VAC): 16200 Manual Bleed Screw (includes o-ring): 15013 Flow-Control Stem: (includes o-ring) : ¾” & 1”-20006 Diaphragm: ¾” & 1”-16055 Fiber Body Washer: ¾”-15053, 1”-15054 Repair Kits: ¾”-17314, 1”-17315 Diaphragm Assembly (includes diaphragm, plates, and shaft): ¾”-17316, 1”-17317...