Sprinkler Replacement Parts
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Questions and Answers
Q. Will the automatic sprinkler system water as well as I can by hand?
An automatic sprinkler system will water your yard much better because the system waters automatically when programmed so there’s no worry about forgetting or running out of time to water your lawn as an automatic system will do the thinking for you.
Q. Will the automatic system use more water than what I’m using now?
Not at all, in fact, it will conserve water.
Q. Will having a sprinkler system save me time?
Yes. Having an automatic sprinkler system means never having to spend another minute of your valuable time watering the lawn.
Q. Are there different types of systems to choose from?
Yes, with Sioux City Sprinkler your sprinkler system will be custom designed with your yard in mind.
Q. How will I know what system is best for me?
It’s always best to work with a professional irrigation contractor. Ask for referrals. Ask how long they have been in business. Sometimes you will get these fly by companies claiming they can put in a sprinkler system and they may be able to. However, are they going to be around if you have problems? Do they offer a warranty? These are very important facts that you should know before hiring a contractor. That’s why Sioux City Sprinkler will tell you. We’ve been in business for over 40 years in the Siouxland area. We offer a warranty to our customers, and we are a certified contractor.
Q. Why won’t the valve shut down?
To determine what is causing the valve not to shut down properly, follow the steps listed below:
- Disconnect one of the valve wires. Does the valve shut off?
- Yes, the valve shuts off, the problem is with the timer. (Please refer to the timer section in your Owner’s Manual for details.)
- No, the valve does not shut off, check the bleed screw to make sure it is not loose or broken.
- Is this a new installation?
- Yes, a low flow may prevent the valve from closing, compare the GPM (gallons per minute)/LPM (liters per minute) requirements of the zone to valve specifications.
- If the GPM/LPM is not within the specifications, add more heads to increase water flow or select a valve that works well at low flow rates.
- No, turn off the main water supply
- Remove valve cover and diaphragm.
- Turn water back on and flush out for 15 seconds.
- Inspect diaphragm for holes/tears replace if necessary.
Q. Why is the valve vibrating or buzzing?
First, you need to determine whether it is the valve or the controller. To do this take one valve that isn’t working and connect it to a station on the timer that is working. If it works, then we know it is a problem with the controller. If it does not work the problem is with the valve.
** Make sure the water supply is shut off to the irrigation system prior to disassembling any portion of the valve to avoid injury.
- There may be excessive water running through the valve. To determine use a water gauge to check the water pressure.
- The plunger or the solenoid may be damaged. To verify attach the solenoid to a working valve. If the valve continues to it is not the solenoid.
- Some humming and vibrating is normal – there may be nothing wrong.
Q. Why is the PVB (pressure vacuum breaker) leaking?
If you are experiencing a backflow condition, it could be that the pressure is dropping below 25 psi. If this is the case, do one of the following:
- If the zone valve is equipped with a flow control handle: Open only enough for the zone to function properly.
- If the valve does not have a flow control handle: Go to the pressure vacuum breaker (PVB) and open the outlet (top one) side only enough for the zone to function properly.
Close outlet (upper handle).
- Close inlet (bottom handle).
- Slam open inlet. Note: Opening the inlet fast as you can will result in the internal float sealing the vent. Opening it slowly may result in the float not sealing the vent and lots of water purging from the vent area around the top of the PVB. Some water leakage is normal when opening the valve, but it normally stops within a few seconds.
- Open outlet just enough to hear water flowing. When the water stops, open it all the way.
Q. How do I program my timer?
General Programming Guidelines:
- Set the current time and day of the week – Without this information, the controller/programmer will not perform the required functions.
- Set Run Times – Run times are assigned to programs and tell the controller how long to run each zone. As a general rule, Toro recommends a run time of 5-10 minutes for fixed spray sprinklers and 30 minutes for rotary sprinklers.
- Set Start Times – Start times tell when to start each program. The controller will run each zone sequentially, one after another, based on the run times selected. When one zone is finished, the next one will start. If you want the same series of valves to run more than once in the same 24-hour period, you must assign a second start time to that program. Remember a second start time does not start the next zone, it starts the same cycle over again.
- Set Active Days – Depending on the controller being programmed, there are three ways to set the active days.
- For complete step-by-step instructions on how to program your controller, consult your Owner’s Manual.
Q. Why doesn’t the timer work on the manual cycle?
Do the following:
- Check the display; if you see a raindrop, it is not the controller. It is the rain switch telling the controller don’t water.
- If the raindrop is not there, check the wiring with the voltmeter to see if there is a break in the wiring from the controller to the valve.
- No power to the controller.
- No programs currently on the controller.
- Re-verify manual start procedures from your Owner’s Manual.