Toro 835 & 855 Series Sprinklers
Contents
1. Figure 15 Servicing Main Valve WARNING IF THE VALVE SNAP RING IS DIFFICULT TO REMOVE RESIDUAL WATER PRESSURE MAY BE REMAINING IN THE SYSTEM TO PREVENT POSSIBLE SERIOUS INJURY DUE TO VALVE BEING EJECTED UPWARD UNDER PRESSURE CONFIRM THE FOLLOWING CONDITIONS EXIST PRIOR TO REMOVING THE SNAP RING AND VALVE A WATER SUPPLY TO SPRINKLER IS SHUT OFF AT SOURCE B ALL PRESSURE IS BLED FROM SYSTEM INCLUDING CONTROL TUBES C AC POWER IS DISCONNECTED AT SOURCE 1 See Warning above To remove valve assembly squeeze snap ring ears together with snap ring pliers P N 995 100 and remove snap ring from sprinkler body See Figure 16 2 Use valve removal tool P N 995 08 for 835S or 995 09 for 7 855S to remove valve assembly from base of sprinkler body Valve removal tool is inserted into sprinkler body and pushed through valve ribs A slight twist will catch tool under ribs ne enabling valve removal by pulling straight up and out See Figure 17 bk Figure 16 ia Figure 17 Note If valve removal tool is not available use snap ring DE pliers to grasp rib of valve cylinder assembly and pull up and out of sprinkler body 3 Reinstall valve assembly using valve insertion tool P N 995 76 for 835S or 995 101 for 855S as follows Load snap ring onto insertion tool carrier with stepped side against carrier as shown in Figure 18 While holding snap ring in compressed posi2. If the sprinkler is set at 360 full circle it will rotate clockwise only 5 Adjust the arc while the turret is pointing at the right stop Hold the sprinkler riser firmly while pressing the release on the adjustment band Rotate the turret counterclockwise or clockwise to the desired right stop See Figure 7 6 Activate the sprinkler to check proper arc setting and adjust as necessary Figure 3 Figure 5 Figure 6 Figure 7 Adjustment Band Angle Indicators Figure 8 90 180 360 The adjustment band of the 835S and 855S have markers at predetermined arcs By aligning the adjustment band indicators to the turret arrow you can set the sprinkler arc to 90 180 270 or 360 Trajectory Adjustment Procedure The 835S and 855S sprinkler models are equipped with the Trujectory nozzle spray angle adjustment feature The trajectory adjusts from the top of the sprinkler enabling fine tuning from 7 30 to compensate for windy conditions spraying under low hanging obstructions up bunker faces and along natural habitats To adjust the nozzle spray trajectory angle use a 5 16 socket Figure 9 Turn the trajectory adjustment clockwise to decrease Figure 10 or counter clockwise to increase Figure 11 Figure 9 Figure 10 Increase Trajection Decrease Trajection Pilot Valve Operation Electric Models Only The
3. If the sprinkler is pressurized main valve will open when the pilot valve is disconnected from control tube 2 Carefully remove turf and soil from the side of the sprinkler to expose pilot valve and control tubing 3 Remove the two retaining screws from the pilot valve housing 4 Pull the pilot valve assembly away from the sprinkler body and cut the control tubing just below tube retainer Unless pilot valve has been previously removed control tubing length will be sufficient for re connection 5 Remove tube retainer and remaining piece of control tubing from valve body fitting 6 Remove the solenoid 1 or 2 by turning it counterclockwise 7 Remove the retaining nut 17 and washer 18 from the pressure adjuster 10 and pull the pilot valve body assembly out of housing 14 8 Remove diaphragm assembly 14 piston 13 spring 12 traveling adjuster 11 pressure adjuster 10 and o ring 6 9 Remove selector shaft assembly 8 and plunger assembly 4 Note The selector shaft retains the plunger in the valve body 10 Thoroughly clean and inspect all parts Replace damaged parts as necessary and reassemble in reverse order Note Refer to Illustrated Parts Breakout Book form number 490 3043 for service part numbers Flushing Sprinkler WARNING NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED DURING MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERV
4. damage Replace if necessary e Damaged piston seal or piston assembly Replace valve assembly a Control field wires severed Isolate and repair b No power to controller Establish controller power c No power from controller to solenoid Check for blown fuse and replace d Manual control selector on pilot valve assembly turned to OFF position Turn to AUTO position e Pilot valve solenoid inoperative Remove and replace f Pilot valve plunger movement restricted Inspect clean and or replace g No supply from main valve Debris in control tube main valve assembly and or communication passages in body Flush thoroughly a Plugged controller discharge line or discharge port in pilot valve Verify by checking for discharge at discharge line when station is activated If no discharge refer to Controller Service Manual a Damaged or blocked valve seat Remove blockage and if necessary replace valve assembly b Damaged piston seal or piston assembly Replace valve assembly c Low pressure on supply line Check for low pressure reason and correct d Elevation of normally closed sprinkler exceeds 75 22 9 m differential a Control tubing leak which lowers supply pressure to other stations Turn controller from station to station until a station is reached where only valves on that station stay open The leak would be in the tubing o
5. main function of the pilot valve is to control the operation of the main TF valve located in the base of the sprinkler body The main valve is operated by the release of water metered through the pilot valve when it is activated either manually at the sprinkler or by the irrigation system controller Another important function of the pilot valve is to regulate the water pressure to the sprinkler nozzle Pressure regulation compensates for large 6 variations within the system and maintains a constant pressure for optimum L D 80 PSI sprinkler operation The pilot valve is factory set to regulate one of four PA 5 6 kg cm pressure levels 50 psi 3 4 bar 65 psi 4 5 bar 80 psi 5 5 bar or 100 PSI 6 9 bar Change the pilot valve operating pressure by loosening the thumb screw that secures the selector lever Position the selector lever to the desired operating pressure and hand tighten the nut See Figure 12 100 PSI 7 0 kg cm 65 PSI 4 6 kg cm 50 PSI 3 5 kg cm Troubleshooting Pilot Valve PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Sprinkler will a No 24 VAC to solenoid assembly Electric Models not turn on Measure voltage with a Digital Volt Meter DVM Check wiring and controller program Refer to Controller Operating Instructions b Selector cam in OFF position Set to AUTO position c Debris in pilot valve assembly Disassemble and remove all debris See Se
6. 835S and 855S Series Rotary Sprinklers Installation amp Service Instructions Count on it Installation Procedure To assure maximum performance from your 800S series sprinklers read these instructions completely prior to installation or service Figure 1 Constructing Swing Joints 1 Construct or provide triple swing joints for each sprinkler as shown in Figure 1 Use PVC or ABS pipe nipple for the sprinkler connection Note On sites where the possibility of heavy equipment rolling over a sprinkler exists the swing joint will flex preventing damage to the lateral or main lines On a new installation in raw ground where the sprinklers are to be initially installed above the finished grade and lowered when new turf is established the swing joint allows sprinkler repositioning without changing risers Flush lines thoroughly prior to installing sprinkler Apply Teflon tape on riser threads not required on ACME threads Install sprinkler to the riser and tighten A CAUTION Use only Teflon tape on riser threads Use of pipe dope or other types of sealing compounds can cause deterioration of sprinkler body threads Connecting Control Wires Electric Models Only 1 Route control wires to sprinklers Provide extra wire at sprinkler to allow for height adjustment One common wire and station wire is required for each sprinkler See Wire Sizing Chart Table 1 for proper application Table 1 Wire Si
7. ICE PROCEDURES DIRECT CONTACT WITH IRRIGATION SPRAY A FAILED OR IMPROPERLY INSTALLED SPRINKLER CONNECTION OR SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER PRESSURE CAN CAUSE SERIOUS INJURY 1 With sprinkler operating carefully step down on center of cap several times Water will flow around riser and flush out debris 2 Cycle sprinkler on and off several times to check for proper retraction Cap should be even with top of body flange when fully retracted If riser sticks in up position check for debris lodged between riser and body Flush out all debris Remove sprinkler mechanism if necessary 2005 The Toro Company Irrigation Division Form Number 373 0380 Rev A
8. ermine why system overloaded and correct Main Valve PROBLEM Valve won t close Electric Valve won t close Hydraulic Valve won t open Electric Valve won t open Hydraulic Sprinkler Weeping Slow leak in valve Several valves on different stations fail to close Hydraulic POSSIBLE CAUSE CORRECTIVE ACTION a Continuous 24 VAC to sprinkler Check controller for voltage source b Leak in pilot valve assembly Replace pilot valve assembly c Plugged supply screen on piston Clean or replace screen d Manual control selector on pilot valve assembly turned to ON position Turn to AUTO position e Plunger movement restricted Inspect and clean or replace f Valve cylinder misaligned with sprinkler body communication tube Remove valve assembly and install correctly g Foreign object keeping valve from seating Remove clean and check valve for damage Replace if necessary h Damaged piston seal or piston assembly Replace valve assembly a Leak in control tubing Isolate and repair b Pilot valve leak in controller Confirm by observing constant dripping from discharge line of controller Refer to Controller Service Manual c Valve cylinder misaligned with sprinkler body communication tube Remove valve assembly and install correctly d Foreign object keeping valve from seating Remove clean and check valve for
9. iser body 13 and carefully extract it from the sprinkler body CAUTION The seal retainer 4 will eject caused by the decompressing spring 5 as it clears the sprinkler body Three small tabs are provided on the edge of the multi purpose tool Insert tabs into the debris filter screen 17 Holding the plastic base of riser assembly turn the screen counterclockwise to remove Remove the variable stator 16 from riser assembly Loosen the drive assembly retaining screw 14 6 7 turns and pull the drive assembly 15 using a pair of pliers See Figure 14 Note Do not remove the retaining screw completely as it is easily misplaced A CAUTION When removing or installing the drive assembly do not use the turbine to pull the drive assembly Use the drive assembly body to extract it out Failure to comply may cause separation of the drive assembly components Note During reassembly ensure drive assembly is properly aligned with the retaining screw Using a 5 8 nut driver P N 995 99 unscrew main nozzle 10 from nozzle base assembly Using a 5 16 nut driver P N 995 105 unscrew the inner 8 and intermediate 9 nozzles Thoroughly clean and inspect all parts and replace as necessary Reassemble in reverse order When installing the riser assembly to the sprinkler body align the ratchet ring with the inside body rib Use the indicator on top of the sprinkler body to center the ratchet ring See Figure 15 Figure 14
10. n that station Isolate and repair b Leak in supply line to controller Verify by checking pressure in all control lines c Leak in controller pilot valve Verify by constant discharge from controller d Plugged supply line filter Replace filter if more than 3 psi 0 21 bar differential exists Service Procedures WARNING MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERVICE PROCEDURES DIRECT 1 NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED DURING CONTACT WITH IRRIGATION SPRAY A FAILED OR IMPROPERLY INSTALLED SPRINKLER CONNECTION OR SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER PRESSURE CAN CAUSE SERIOUS INJURY Servicing Sprinkler Mechanism Note Refer to Figure 13 for the following procedure 1 Remove the cap screw 1 and cap 2 Note During reassembly ensure the cap is correctly installed with the Toro Logo positioned over the main nozzle 10 Insert the hooked end of the multi purpose tool P N 995 83 into the snap ring slot 3 Pull the snap ring inward towards the sprinkler assembly then upward to remove from the groove in body Note During reassembly ensure the snap ring is correctly installed and fully seated in the sprinkler body Insert the hooked end of the tool into the slot provided in the nozzle base above the right intermediate nozzle 9 Pull the riser assembly until enough clearance to handle Hold onto the r
11. only to fill the system at a velocity fill rate of less than 2 0 61 m per second A CAUTION Failure to comply with recommended fill rate will increase line pressure resulting in a water hammer effect that could damage sprinklers and piping components 2 Use quick coupler keys at all tees and greens with quick coupler valves to bleed air from the system lines during the filling process For best results do not compress air and then relieve it bleed the air continuously while filling the system 3 After water has filled all lines and all air is removed remove the quick coupler keys Table 3 Recommended System Fill Rate Pipe Size Velocity Pipe Size Flow Velocity in cm GPM_ LPM ft sec 1 2 13 2 7 6 1 60 3 4 1 9 3 11 4 1 92 1 2 5 5 18 9 1 50 6 152 150 567 8 173 053 1 1 4 31 10 37 9 1 86 8 202 250 946 3 170 052 1 1 2 38 10 37 9 1 41 10 254 450 1703 0 197 060 2 5 0 20 75 7 1 80 2 1 2 6 4 30 113 6 1 84 Arc Adjustment Procedure WARNING A DUE TO THE HIGH OPERATING PRESSURE NEVER STAND OR LEAN DIRECTLY OVER THE TOP OF THE SPRINKLER OR COME IN CONTACT WITH THE SPRAY FAILURE TO COMPLY MAY RESULT IN SERIOUS INJURY The 835S and 855S sprinkler models can be operated in full circle or part circle operation In part circle operation the sprinkler arc can be adjusted from 40 330 When full circle 360 operation is selected
12. rvicing Pilot Valve page 12 d Insufficient pressure in controller supply line and or sprinkler control tube N C Models Check pressure Sprinkler will a Constant 24 VAC from controller Electric Models not shut off Check for voltage using a DVM If voltage is present disconnect wire If sprinkler closes service controller Refer to Controller Service Manual b Selector cam in manual ON position Set to AUTO or OFF position c Debris in pilot valve assembly Disassemble and remove all debris See Servicing Pilot Valve page 12 d Constant pressure from controller N C Models Check pilot valve at controller for constant flow Check elevation differential Valve elevation should not exceed 0 above controller elevation or 70 21 3 m below controller elevation Sprinkler Mechanism PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Sprinkler won t rotate a Debris wedged between stator and turbine Remove obstruction b Drive assembly defective Replace drive assembly c Nozzle base assembly defective Replace nozzle base assembly Head sticks up a Dirt in riser assembly Flush out See Flushing Procedure on page 12 b Damaged or missing return spring Replace c Damaged riser Replace Poor distribution pattern a Nozzle plugged with debris Clean or replace nozzle b Nozzle orifice damaged Replace nozzle c Low operating pressure Det
13. should not exceed service operations Refer to Table 2 with 3 16 Control Tubing 500 25 ABOVE controller elevation or for tubing run length and sprinkler 70 BELOW controller elevation elevationiinformation Normally Open 01 Valve elevation should not exceed 2 Flush tubing thoroughly to remove all with 1 4 Control Tubing 1000 25 ABOVE controller elevation or air and debris 70 BELOW controller elevation 3 Remove the tube retainer and poly cap e All hydraulic connections on Toro valves are 1 4 insert type f from the tubing adapter at the base of Control line pressure must be equal to or greater than mainline pressure the sprinkler e Control line pressure range is 40 to 150 PSI 4 Slide the tube retainer over the end of the control tubing and attach tubing to adapter 5 Slide tube retainer over the adapter area to secure tubing System Start Up WARNING NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED DURING MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERVICE PROCEDURES DIRECT CONTACT WITH IRRIGATION SPRAY A FAILED OR IMPROPERLY INSTALLED SPRINKLER CONNECTION OR SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER PRESSURE CAN CAUSE SERIUS INJURY The following is a recommended procedure that will protect system components during system start up The procedure is based ona velocity fill rate of less than 2 0 61 m per second See Table 3 below 1 Use jockey pump
14. the sprinkler will rotate in a clockwise direction only The arc is factory preset at 180 The left side of the arc located at the end of the counterclockwise rotation is non adjustable fixed Therefore all arc adjustments whether increasing or decreasing will change the right side of the arc located at the end of the clockwise rotation 1 Using the sprinkler Multi Purpose Tool P N 995 83 pull the sprinkler riser up from the body See Figure 3 2 Find the sprinkler left stop by rotating the turret counter clockwise until it stops The left stop indicates the fixed stop of the arc See Figure 4 3 Check the left stop alignment with the left most area being irrigated Adjust by ratcheting the riser clockwise or counterclockwise until the sprinkler left stop points to the correct area See Figure 5 A CAUTION The riser can only ratchet when the sprinkler is not operating Attempting to ratchet the riser during operation may damage the sprinkler The turret can also be used to adjust the left stop If the left stop falls short of the desired border rotate the turret counterclockwise until it is aligned with the left watering border See Figure 4 If the left stop exceeds the border rotate the turret clockwise until the right stop Continue to advance the turret the same distance that the left stop exceeded the border See Figure 6 4 Find the sprinkler right stop by rotating the turret clockwise until it stops See Figure 6 Note
15. tion slide retainer clip in to hold snap ring ears Load valve assembly on carrier as shown Locate position of communication tube in bottom of sprinkler body and orient insertion tool accordingly Insert tool straight down into sprinkler body aligning bosses on t handle with holes on sprinkler body flange When valve assembly clears vertical side wall ribs inside body pull up on snap ring release mechanism 855 models only and press valve assembly into position Snap ring will lock into groove when properly installed Remove insertion tool and check snap ring to confirm that it is fully seated in groove Figure 18 Snap Ring Release Mechanism Valve Assembly stepped Side Orientation In Carrier Press Valve Assembly Into Position of Snap Ring Snap Ring Released Servicing Pilot Valve WARNING NEVER STAND OR LEAN OVER THE SPRINKLER WHILE THE IRRIGATION SYSTEM IS BEING FILLED DURING MANUAL OR AUTOMATIC OPERATION OR WHEN PERFORMING SPRINKLER SERVICE PROCEDURES DIRECT CONTACT WITH IRRIGATION SPRAY A FAILED OR IMPROPERLY INSTALLED SPRINKLER CONNECTION OR SPRINKLER COMPONENTS FORCIBLY EJECTED UPWARD UNDER PRESSURE CAN CAUSE SERIOUS INJURY Note Refer to Figure 19 for the following procedure Figure 19 1 Make sure that the water supply to sprinkler is positively shut off and any residual pressure has been bled off
16. zing Chart Total Wire Length Between Controller and Sprinkler Voltage Voltage Drop Circular Mils 1 Sprinkler 2 Sprinklers 3 Sprinklers 4 Sprinklers 14 14 2 5 2 5 4 4100 6571 2003 m 3285 1001 m 2190 668m 1643 501m 14 12 2 5 4 0 5315 8518 2596 m 4259 1298 m 2839 865m_ 2129 649m 24 24 Note Wire length data provided in Table 1 is the sum of the station and common wire legs See example in Figure 2 12 8 4 0 5 5 10 10 5 5 5 5 Attach control wires to solenoid leads using an approved waterproof splicing method A CAUTION All wire splices and field connections must be waterproofed to prevent short circuit to ground and subsequent controller damage 5652 1723 m 2905 886 m 2616 3391 4613 4167 2053 2662 3631 3270 4239 5767 798 m ole MIN SO olx O o gt S Sl gt B Figure 2 Station Wire 1095 334m AA Common Wire 1095 334m Total Wire Length 2190 668m Connecting Hydraulic Control Tubing Hydraulic Models Only 1 Route control tubing from the controller to the sprinkler location s Table 2 Hydraulic Control Systems Note Leave an 18 45 7 cm service Maximum Distance loop of tubing at each sprinkler to Type of System From Controller Elevation Restrictions facilitate movement of sprinkler and Normally Open 01 Valve elevation
Download Pdf Manuals
Related Search