LIT-060 Hunter 2004-2005 Product Catalog - Ewing Irrigation

PGJ, PGP ® , I-20 Ultra, I-25 Plus, I-40 Group and I-90 Rotary Sprinklers Arc AdjustmentTo increase arc:1. Insert the plastic key end of the Hunter wrench intothe adjustment socket.2. While holding the nozzle turret at the right stop, turnthe wrench clockwise. Each 360˚ turn of the wrenchincreases arc 90˚ (45˚ for I-25 Plus and I-40 group).3. Wrench will stop turning or there will be a ratchetingnoise when adjusted to the maximum arc (360˚).4. Adjust to any arc between 40˚ and 360˚.To decrease arc:1. Insert the plastic key end of the Hunter wrench intothe adjustment socket.2. While holding the nozzle turret at the right stop,turn the wrench counterclockwise. Each 360˚ turnof the wrench decreases arc 90˚ (45˚ for I-25 Plus andI-40 group).3. Wrench will stop turning or there will be a ratchetingnoise when adjusted to the minimum arc (40˚).TECHNICAL INFORMATIONArc AdjustmentAdjustable heads are preset to approximately 180˚.Sprinklers may be adjusted with water on or off. It isrecommended that initial adjustments be madebefore installation.1. Using the palm of your hand, rotate the nozzle turretcounterclockwise to the left stop to complete anyinterrupted rotation cycle.2. Rotate the nozzle turret clockwise to the right stop.This is the fi xed side of the arc. The nozzle turret mustbe held in this position for arc adjustments. The rightstop does not change.Increase ArcDecrease Arc40° 360°MinimumMaximumAligning the Right (Fixed) Side of ArcIf the right side of the arc is not properly aligned, theresults may be a wet walkway or a dry turf area. Theright side arc can easily be realigned. One way torealign the right stop is to turn the whole sprinkler bodyassembly and the fi tting below it, left or right to thedesired position. This may require temporary removalof the soil around the sprinkler to allow you to grip thesprinkler housing.to the right stop, screw the internal assembly back intothe body with the nozzle aligned to the right side of thearea you want irrigated (Fig. 11). At this point you haverealigned the right arc stop, and you can adjust the leftarc to an appropriate setting.Note: It is not necessary to dig up and remove the wholesprinkler to realign the right arc.Another way to reset the right arc is to unscrew the bodycap counterclockwise and remove the internal assemblyfrom the body. Once removed, rotate the nozzle turretFig. 11Accu-Set Pressure RegulatorInstalling the Accu-Set Pressure Regulator1. Remove the solenoid from the Hunter PGV or ICVirrigation valve. (Also remove the fl ow control knobon the 1" ICV.) See Figure 12.2. Thread the solenoid onto the Accu-Set.3. Before threading, align the Accu-Set over the solenoidseat and position the Schrader valve portion of theAccu-Set towards the fl ow control handle.* See Figure 13.4. Thread the Accu-Set into the solenoid area ofthe valve.Setting the Accu-Set Pressure Regulator1. Turn the clear dial on the top of the Accu-Set until thearrow underneath the clear dial ispointing to the desired downstream pressure.See Figure 14.2. The white colored scale is for “PSI,” the yellowcolored scale is for “bar.”* The Schrader valve is for specifi cations requiringchecking or setting pressure using a gauge, but theAccu-Set can easily be set without it. When using theSchrader valve to measure pressure, remember thatthe pressure reading will measure higher than the faceof the Accu-Set (because the Accu-Set is adjustedfor downstream pressure, while the Schrader valve ismeasuring pressure right at the valve). The pressurewill be 2 to 8 PSI lower in the pipe, depending onmany factors such as fl ow and pipe size.Fig. 12 Fig. 13 Fig. 14113