Toro 730 User's Manual
Contents
1. for each sprinkler See Wire Sizing Chart Table 1 for proper 23 V a c application 23 V a c 23 V a c Attach control wires to solenoid leads using an approved 23 V a c waterproof splicing method 23 V a c CAUTION All wires must be waterproofed to prevent short circuit to 23 V a c ground and subsequent controller damage NOTE Minimum solenoid voltage required for reliable electric VIH operation is 20 V a c Chart based on the following Transformer 115 230 V a c 24 V a c 45 VA Coil Assy 24 Va c 60 Hz Holding 30 Amps In Rush 40 Amps Connecting Hydraulic Control Tubin g ny g Table 2 Control Systems 1 Route control tubing from controller to sprinkler Maximum Distance location s Type of System From Controller Elevation Restrictions NOTE Pin typee 00 Hydraulic 1 Leave an 18 45 7 cm service loop of tubing at each with e Control Tubing 199 sprinkler to facilitate movement of sprinkler and Pin typee 00 Hydraulic service operations with Control Tubing 200 1 Tubing runs in excess of 1 000 304 8 m are not Normally Open 01 Valve elevation should not exceed advisable due to delayed response time with Control Tubing 500 25 ABOVE controller elevation or 1 The valve elevation for normally open valve in head 70 BELOW controller elevation systems should not e2. Introduction The 730 Series Full Circle Rotary Sprinklers are designed for irrigation of large turf areas such as golf courses parks recreational fields and school grounds Manufactured from durable high strength engineering plastic and stainless steel components these sprinklers incorporate many innovative and time proven features for lasting maintenance free operation Prior to installing the sprinkler read through the recommended installation and start up procedures Please observe all Warnings and Cautions when installing and operating this equipment Features Full 3 7 6 cm pop up clears tall grasses Nozzles color coded by radius and gallonage Caps serve as yardage markers or effluent water indicators Variable stator Three standard pressure regulation settings available to ensure consistently accurate nozzle performance regardless of elevation m Four body styles activation types available to fit every application Electric VIH Normally Open Hydraulic VIH and Check O Matic COM m Manual control at the sprinkler On Off Auto Electric 730 Series Rotary Sprinklers Installation amp Service Instructions 730 Electric Valve In Head Specifications m Radius 52 ft 83 ft 15 8 m 25 3 m m Flow Rate 11 0 41 2 GPM 41 6 155 7 I mn 2 5 9 4 m hr m Arc Full Circle m Maximum Pressure a Electric VIH 150 PSI 10 5 kg cm 1034 5 kPa a NO Hyd VIH 100 PSI 7 0 kg
3. 3 95 71 27 1 74 34 0 79 36 8 82 40 2 100 72 28 1 75 35 5 80 38 0 83 41 2 Rad feet GPM gallons per minute Pressure regulation Nozzles not recommended at this pressure Toro recommends the use of a 1 swing joint at flows over 25 GPM Sprinkler radius of throw per ASAE standard S398 1 Conversion Allgallons per minute shown To convert to liters per minute To convert pounds per square To convert feet to meters divide Information are U S multiply by 3 78 inch PSI to kilograms per by 3 28 To convert to Imperial gallons To convert pounds per square square centimeter kg cm To convert inches to millimeters per minute multiply by 833 inch PSI to atmospheres divide by 14 22 multiply by 25 4 divide by 14 7 Installation Procedure CAUTION Golf sprinklers are intended for installation at grade with full support of the body and piping system from the surrounding earth Failure to provide full support may result in premature Figure 1 Triple Swing Joints NPT amp BSP models only failure of the body and or connecting fittings To assure maximum performance from your 734 Series Rotary Sprinklers read these instructions completely prior to installation or service Swing Joints Connecting Electric Control Wires 1 Route control wires to sprinkler location s Provide enough extra 1 Construct or provide triple swing joints for each sprinkler as shown in Figure 1 Use PVC or ABS pip
4. XXX Only The main function of the pilot valve is to control the operation of the main 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 variations within the system and maintains a constant pressure for optimum sprinkler operation The pilot valve is factory set to regulate one of four pressure levels 50 psi 3 5 kg cm 65 psi 4 6 kg cm 80 psi 6 0 kg cm or 100 PSI 7 0 kg cm The sprinkler operation mode is set using a Toro Selector Tool P N 995 15 inserted through the body flange onto the pilot valve D shaped selector cam The AUTO mode permits automatic operation from the system controller The ON mode opens the main valve for manual operation and OFF mode prevents the main valve from opening System Troubleshooting Pilot Valve Possible equipment failures with causes and corrective action are listed below POSSIBLE CAUSE CORRECTIVE ACTION PROBLEM 1 Sprinkler will not turn on 2 Sprinkler will not shut off a No 24 VAC to coil assembly Electric Models Measure voltage with a Digital Volt Meter DVM Check wiring and controller program Refer to Controller Operating Instructi
5. Controller Service Manual Foreign object keeping valve from seating Remove clean and check valve for damage Replace if necessary Damaged piston seal or piston assembly Replace valve assembly Valve not properly communicated to tube in body Reassemble if necessary System Troubleshooting Sprinklers continued POSSIBLE CAUSE CORRECTIVE ACTION PROBLEM 5 Valve won t open Hyd Normally Open 734 X1 XX 6 Valve won t close Electric 734 X6 XXX 7 Valve won t open Electric 734 X6 XXX 8 Sprinkler Weeping Slow leak in valve 9 Several valves on different stations fail to close Hyd Normally Open 734 X1 XX 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 Leak in pilot valve assembly Replace pilot valve assembly Plugged supply screen on piston Clean or replace screen Manual control selector on pilot valve assembly turned to ON position Turn to AUTO position Pilot Valve solenoid inoperative Remove and replace Control field wires severed Isolate and repair Defective solenoid Replace solenoid No power to controller Establish controller power No power from controller to solenoid Check for blown fuse and replace Manual control selector on pilot valve assembly turn
6. TUATING SPRINKLER MANU ALLY OR AUTOMATICALLY PRIOR TO ACTUATION OF SPRINKLER USE A SLOT HEAD SCREWDRIVER TO LIFT CAP TO OBSERVE DIRECTION OF NOZZLE FAILURE TO COM PLY MAY RESULT IN SERIOUS INJURY With sprinkler operating carefully step down on center of cap several times Water will flow around riser and flush out debris 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 Servicing Pilot Valve Refer to Toro Illustrated Parts Breakout Book Form No 368 0044 for parts identification a PO SPO h Assure water supply to sprinkler is positively shut off and any residual pressure has been bled f sprinkler is pressurized main valve will open when Pilot Valve is disconnected from control tube Carefully remove turf and soil from side of sprinkler to expose Pilot Valve and control tubing Remove two retaining screws from Housing Pull Pilot Valve assembly away from sprinkler body and cut control tubing just below Tube Retainer Unless Pilot Valve has been previously removed control tubing length will be sufficient for re connection Remove Tube Retainer and remaining piece of control tubing from valve body fitting Remove Solenoid Assembly by turning it counterclockwise Pull Pilot Valve Body Assemb
7. cm 689 7 kPa a Check O Matic 100 PSI 7 0 kg cm 689 7 kPa Body Height 10 in 25 4 cm Pop Up Height 3 in 7 6 cm 1 in NPT ACME or BSP Female Thread Inlet Solenoid 24 V a c 50 60 Hz m Bowl vented discharge atmospheric minimizes the a Inrush Current 50 Hz 0 47 Amps 11 3 VA differential pressure required for regulation and ensures 60 Hz 0 40 Amps 9 6 VA positive valve closure Electric a Holding Current 50 Hz 0 32 Amps 7 7 VA m All internal components serviceable from the top of the 60 Hz 0 30 Amps 7 2 VA sprinkler m Manual Control On Off Auto m Seven color coded nozzles available m COM model checks up to 37 ft 11 3 m of elevation m Durable plastic and stainless steel construction Color Coded Nozzles 730 SERIES NOZZLE PERFORMANCE U S BASE NOZZLE SET NOZZLE SET NOZZLE SET NOZZLE SET NOZZLE SET NOZZLE SET NOZZLE SET PRESSURE 31 YELLOW 32 oPAaNGE 33 BROWN 34 BUE 35 GREEN 36 RED 37 Gray PSI Rad GPM Rad GPM Rad GPM Rad GPM Rad GPM Rad GPM Rad GPM 50 52 11 0 55 13 3 60 16 8 62 19 8 66 25 0 68 26 5 69 29 3 55 63 20 6 67 25 8 69 27 9 70 30 7 60 64 21 4 68 26 6 71 29 2 72 32 1 65 65 22 2 69 27 4 72 30 6 74 33 5 70 66 22 8 70 28 1 73 31 4 76 34 8 75 66 23 4 70 28 8 75 32 2 78 36 1 80 67 24 0 71 29 5 76 33 0 80 37 4 85 68 25 0 72 31 0 ae 34 3 81 38 2 90 70 26 1 73 32 5 78 35 5 82 39
8. e nipple for 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 This is acommon and practical procedure which eliminates the problem of dirt being accidentally introduced into the lateral lines when a riser is changed Flush lines thoroughly prior to installing sprinkler NPT and BSP Threaded Models e Apply plumbing tape on riser threads Install sprinkler onto riser and tighten ACME Threaded Models e Install ACME threaded bodies onto Acme threaded swing joint by threading clockwise until hand tight Note ACME threaded swing joints have an o ring that seals to the sprinkle Plumbing tape is not required CAUTION Use only plumbing tape on riser threads Use of pipe dope or other types of sealing compounds can cause deterioration of sprinkler body threads Table 1 Wire Sizing Chart Maximum allowable length in feet from controller to electric VIH wire at sprinkler to allow for movement of sprinkler without straining sprinklers OUTPUT VOLTAGE AT CONTROLLER TRANSFORMER wire connections One common wire and station wire is required 23 V a c
9. echeck the water supply to ensure it is turned off and all pressure has been totally eliminated before removing the snap ring and valve 2 Use valve removal tool P N 995 08 to remove valve assembly from base of sprinkler body Valve Removal Tool is inserted into sprinkler body and pushed through valve ribs to the underside of valve A slight twist will lock tool to valve enabling removal by pulling straight up and out See Figure 4 NOTE If valve removal tool is not available use snap ring pliers to grasp rib of valve cylinder assembly and pull up and out of sprinkler body 3 To reinstall valve assembly with snap ring and to prevent damage to the communication tube in sprinkler body use valve insertion tool P N 995 76 Valve insertion tool will automatically line up valve assembly with sprinkler body communication tube and correctly seat the snap ring See Figure 5 NOTE It is possible to install the snap ring backwards upside down See inset in Figure 5 to insure that snap ring is placed on the insertion tool in the correct manner Figure 3 Figure 4 Figure 5 Using Snap Ring Pliers to Using Valve Removal Tool to Using Valve Insertion Tool to Remove Snap Ring Remove Valve Assembly Install Valve Assembly with Snap Ring 8 Flushing Sprinkler Heads WARNING DUE TO HIGH OPERATING PRESSURE NEVER STAND OR LEAN DIRECTLY OVER SPRINKLER OR COME IN CONTACT WITH SPRAY WHEN AC
10. ed to OFF position Turn to AUTO position No supply from main valve Debris in control tube main valve assembly and or communication passages in body Flush thoroughly Pilot Valve solenoid inoperative Remove and replace Damaged or blocked valve seat Remove blockage and if necessary replace valve assembly Damaged piston seal or piston assembly Replace valve assembly Low pressure on supply line on hydraulic NO sprinklers Check for low pressure reason and correct 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 on that station Isolate and repair Leak in supply line to controller Verify by checking pressure in all control lines Leak in controller pilot valve Verify by constant discharge on controller Refer to Controller Service Manual Plugged supply line filter Replace filter if more than 3 psi 0 21 kg crr differential exists Servicing Procedures Introduction The 734 sprinkler is designed to provide the user trouble free operation for many years without scheduled maintenance Should it become necessary to disassemble the sprinkler to correct a malfunction or replace a component all internal parts of the sprinkler are accessible from the top Refer to the Troubleshooting Procedure in this manual in t
11. he event of a malfunction Some special tools are required for disassembly and or maintenance of the sprinkler and are available from your Toro dealer WARNING TO PREVENT POSSIBLE INJURY DURING SPRINKLER SERVICING PROCEDURES CON FIRM THE FOLLOWING CONDITIONS EXIST PRIOR TO STARTING A WATER SUPPLY TO SPRINKLER IS SHUT OFF AT SOURCE B SYSTEM PRESSURE IS BLED FROM SYSTEM INCLUDING CONTROL TUBES C A C POWER IS DISCONNECTED AT SOURCE Servicing Sprinkler Mechanism Refer to Toro Illustrated Parts Breakout Book Form No 368 0044 for parts identification 1 2 3 Lift Cap using knife blade edge or small screwdriver tip inserted between edge of Cap and Body flange Grasping edges of Cap pull sprinkler mechanism up until fully extended While firmly holding Riser Assembly remove Cap Nozzle assembly by turning it counterclockwise Allow Riser Assembly to slowly retract into body 4 Using two small screwdrivers inserted between Nozzle and Cap separate Cap from Nozzle Assembly retained by press fit To change Nozzles carefully insert knife blade edge between nozzle flange and base Using Multi Purpose Tool P N 995 83 remove Snap Ring from groove in body Thread Drive Assembly Extraction Tool 995 78 onto drive assembly output shaft and Carefully remove O ring from top of riser housing Pry nozzle loose and remove Align new nozzle as shown in illustration at right Flat Carefully press new nozzles into No
12. ly out of Housing Remove Diaphragm Assembly Piston and Spring Remove Selector and Plunger Assembly Selector retains Plunger in body Thoroughly clean and inspect all parts Replace damaged parts as necessary and reassemble in reverse order 1998 THE TORO COMPANY Irrigation Division An ISO 9001 Certified Facility P O Box 489 PRINTING DATE Riverside California 92502 FORM NO NOVEMBER 1998 Printed in U S A 367 0056 REV C
13. ons Selector cam in OFF position Set to AUTO position Debris in pilot valve assembly Disassemble and remove all debris See Servicing Pilot Valve page 8 Constant 24 VAC from controller Electric Models Check for voltage using a DVM If voltage is present disconnect wire If sprinkler closes service controller Refer to Controller Service Manual Selector cam in manual ON position Set to AUTO or OFF position Debris in pilot valve assembly Disassemble and remove all debris See Servicing Pilot Valve page 8 System Troubleshooting Sprinklers POSSIBLE CAUSE CORRECTIVE ACTION PROBLEM 1 Sprinkler won t rotate 2 Head sticks up 3 Poor distribution pattern 4 Valve won t close Hyd Normally Open 734 X1 XX a Debris wedged between stator and turbine Remove obstruction Drive assembly defective Replace drive assembly Nozzle base assembly defective Replace nozzle base assembly Dirt in riser assembly Flush out See Flushing Procedure on page 7 Damaged or missing return spring Replace Nozzle plugged with debris Clean or replace nozzle Nozzle orifice damaged Replace nozzle Low operating pressure Determine why system overloaded and correct Leak in control tubing Isolate and repair Pilot valve leak in controller Confirm by observing constant dripping from discharge line of controller Refer to
14. system components during system start up The procedure is based ona velocity fill rate of less than 2 0 6 m per second See Table 2 below SPRINKLER OR COME IN CONTACT WITH SPRAY FAILURE TO COMPLY MAY RESULT IN WARNING DUE TO HIGH OPERATING PRESSURE NEVER STAND OR LEAN DIRECTLY OVER TOP OF SERIOUS INJURY 1 Use jockey pump only to fill system at velocity fill rate of less than 2 0 6 m per second 2 Use quick coupler keys at all tees and greens with quick coupler valves to bleed air from system lines during filling process Do not compress air and then relieve bleed air while filling system 3 After water has filled all lines and all air is removed remove quick coupler keys CAUTION Failure to comply with recommended fill rate will increase line pressure resulting in a water hammer effect that could damage sprinklers and or piping system Table 2 Recommended System Fill Rate Pipe Size Flow Velocity Pipe Size Flow Velocity in cm GPM LPM ft sec m sec in cm GPM LPM ft sec m sec 1 2 1 3 2 7 6 1 60 0 49 3 7 6 45 170 3 1 86 0 57 3 4 1 9 3 11 4 1 92 0 59 4 10 2 75 283 9 1 87 0 57 1 2 5 5 18 9 1 50 0 46 6 15 2 150 567 8 1 73 0 53 1 1 4 3 2 10 37 9 1 86 0 57 8 20 2 250 946 3 1 70 0 52 1 1 2 3 8 10 37 9 1 41 0 43 10 25 4 450 1703 3 1 97 0 60 2 5 0 20 75 7 1 80 0 55 12 30 5 500 1892 5 1 55 0 47 2 1 2 6 4 30 113 6 1 84 0 56 Pilot Valve Operation Model 734 X6
15. xceed 25 7 6 m above Normally Closed 08 Valve elevation should not exceed controller elevation or 70 21 3 m below controller with e Control Tubing 500 0 ABOVE controller elevation or elevation 70 BELOW controller elevation 1 The valve elevation for normally closed valve in head Normally Open 01 Valve elevation should not exceed systems should not exceed 0O above controller with Control Tubing 1000 25 ABOVE controller elevation or elevation or 70 21 3 m below controller elevation 10 BELOW controler elsvation 1 f connecting more than one VIH sprinkler per control Normally Closed 08 Valve elevation should not exceed tubing run refer to the chart below with 4 Control Tubing 1000 0 ABOVE controller elevation or a Aen 70 BELOW controller elevation Recommended Maximum 5 1 VIH 3 5 All hydraulic connections on Toro valves are 4 insert type 1 5 VIH 2 3 Control line pressure must be equal to or 10 greater than mainline pressure Control line pressure range is 40 to 150 PSI NOTE Maximum of one 1 valve pr station on pin type systems 2 Flush tubing thoroughly to remove all air and debris g e Pa 3 Remove tube retainer and poly cap from tubing adapter at base of sprinkler Slide tube retainer over control tubing and attach tubing to adapter Slide tube retainer over adapter area to secure tubing as System Start Up The following is a recommended procedure that will protect
16. zzle Base until flange is fully seated Avoid contact Spot with nozzle orifice as sprinkler coverage can be greatly impaired if orifice is damaged Down or altered in any way pull sprinkler assembly out of body Figure 2 Using Multi Purpose Tool P N 995 83 remove screen by turning it counterclockwise while holding base of riser assembly 10 11 12 Remove Variable Stator Remove Drive Assembly by pushing against end of threaded output shaft Inspect Stator Housing for nicks and burrs This part can be difficult to remove if sprinkler has been in operation for some time and should be left in place if it appears undamaged lf replacement is necessary grasp housing with pliers and pull from riser housing Thoroughly clean and inspect all parts Replace damaged parts as necessary and reassemble in reverse order Valve Removal and Replacement WARNING POSITIVELY SHUT OFF WATER SUPPLY AT SOURCE PRIOR TO DISASSEMBLING SPRINKLER BLEED ALL PRESSURE FROM SYSTEM INCLUDING CONTROL TUBES FAILURE TO DEPRESSURIZE SYSTEM PRIOR TO SNAP RING REMOVAL COULD CAUSE VALVE MECHANISM TO EJECT FROM SPRINKLER BODY UNDER PRESSURE RESULT ING IN POSSIBLE SERIOUS INJURY TO PERSONNEL 1 To remove valve assembly squeeze ears of snap ring together with snap ring pliers P N 995 07 and remove snap ring from sprinkler body See Figure 3 CAUTION If snap ring is difficult to remove there may be residual water pressure in the system R
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