DT34 and DT54 Series Rotary Sprinklers
Installation & Service Instructions
Note: For preliminary use only.
Introduction ______________________________________________________________________
The DT34 and DT54 series full-circle rotary sprinklers are designed specifically for golf course applications.
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.
DT34 Electric Valve-In-Head DT54 Electric Valve-In-Head
Features _______________________________________________________________________________
???Main nozzle trajectory allows for 25 and 15 degree selections
???Full 4" (10,1 cm) pop-up clears tall grasses
???Nozzles color-coded by radius and gallonage
???Cap serves as an effluent water indicator
???Variable stators
???Selectable pressure regulation settings of 50 psi (3.4 bar), 65 psi (4.5 bar), 80 psi (5.5 bar) or 100 PSI (6.9 bar) to ensure consistently accurate nozzle performance regardless of elevation (electric models only)
???Three body activation types available: Electric VIH, Normally Open Hydraulic VIH, and Check-O-Matic
???Three body thread types available: NPT, BSP and ACME
???Manual sprinkler control, On-Off-Auto (electric models only)
???Bowl-vented discharge (atmospheric) minimizes the differential pressure required for regulation and ensures positive valve closure (electric models only)
???All internal components serviceable from the top of the sprinkler
???Large selection of color-coded nozzles available
???Durable plastic and stainless-steel construction
???Optional radius reduction screw
Specifications and Performance/Application Data _______________________________________
DT34 Series
???Radius: 52'???92' (15,9???28,0 m)
???Flow Rate: 15???50 GPM (56,7???189,3 LPM)
???Trajectory: Selectable 15?? or 25??
???Arc: Full Circle
???Recommended Operating Pressure: 65???100 PSI (4,5???6,9 Bar)
???Minimum Pressure: 40 PSI (2,8 Bar)
???Maximum Pressure: 150 PSI (10,3 Bar)
???Precipitation Rate:
???Minimum: 0.46"/hr (11,7 mm/hr)
???Maximum: 0.63"/hr (16 mm/hr)
???Body Height: 10" (25.4 cm)
???Pop-Up Height: 4.1875" (10.6 cm)
???Inlet Size: 1" NPT, BSP or ACME
???Electric Valve-in-head Solenoid:
???Inrush current: 0.30A @ 24 VAC, 50/60 Hz
???Holding current: 0.20A @ 24 VAC, 50/60 Hz
???Manual Control (Electric VIH only): On-Off-Auto
???Check-O-Matic model checks up to 37' (11,2 m) of elevation.
???Seven Nozzle Variations: See chart on page 2.
DT54 Series
???Radius: 52'???100' (15,9 m???30,5 m)
???Flow Rate: 15???62 GPM (56,8???234,7 LPM)
???Trajectory: Selectable 15?? or 25??
???Arc: Full Circle
???Recommended Operating Pressure: 65???100 PSI (4,5???6,9 Bar)
???Minimum Pressure: 40 PSI (2,8 Bar)
???Maximum Pressure: 150 PSI (10,3 Bar)
???Precipitation Rate:
???Minimum: 0.50"/hr (12,7 mm/hr)
???Maximum: 0.72"/hr (18,3 mm/hr)
???Body Height: 11" (27.9 cm)
???Pop-Up Height: 4.1875" (10.6 cm)
???Inlet Size: 1.5" NPT, BSP or ACME
???Solenoid:
???Inrush current: 0.30A @ 24 VAC, 50/60 Hz
???Holding current: 0.20A @ 24 VAC, 50/60 Hz
???Manual Control (Electric VIH only): On-Off-Auto
???Check-O-Matic model checks up to 37' (11,2 m) of elevation.
???Nine Nozzle Variations: See chart on page 2.
DT34 Series Sprinkler Performance Data
Radius shown in feet. Toro recommends the use of a 11???4" (30mm) swing joint at flows over 25 GPM (95 LPM). Sprinkler radius of throw per ASAE standard S398.1
??? = Main Nozzle ??? = Intermediate Nozzle ???= Intermediate Nozzle w/ Straightener ??? = Inner Nozzle (Yellow w/ Yellow Restrictor) All sprinklers are equipped with the selectable pilot valve that allows settings at 50, 65, 80 and 100 psi.
DT54 Series Sprinkler Performance Data
Radius shown in feet. Toro recommends the use of a 11???4" (30mm) swing joint at flows over 25 GPM (95 LPM). Sprinkler radius of throw per ASAE standard S398.1
??? = Main Nozzle ??? = Intermediate Nozzle ???= Intermediate Nozzle w/ Straightener ??? = Inner Nozzle (Yellow w/ Yellow Restrictor) All sprinklers are equipped with the selectable pilot valve that allows settings at 50, 65, 80 and 100 psi.
??? Triangular Spacing
Note: Designing for zero (0) mph wind conditions is not recommended. Design for worst wind conditions.
For additional information, refer to Toro Technical Data Manual, form number 490-1737.
??? Square-spaced sprinklers in pattern:
GPM of full circle x 96.3
(Spacing)2
??? Triangular-spaced sprinklers in pattern:
GPM of full circle x 96.3
(Spacing)2 (0.866)
??? Area and flow:
Total GPM of zone x 96.3
Total irrigated square feet of zone
??? Single row:
GPM of full circle x 96.3
(Spacing) (Scallop)
Installation Procedure ___________________________________________________
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. This is a common and practical procedure which eliminates the problem of dirt being accidentally introduced into the lateral lines when a riser is changed.
2.Flush lines thoroughly prior to installing sprinkler.
3.Apply PTFE tape on riser threads (not required on ACME threads). Install sprinkler to riser and tighten.
CAUTION: Use only PTFE 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.
Note: Wire length data provided in Table 1 is the sum of the station and common wire legs. See example in Figure 2.
2.Attach control wires to solenoid leads using an approved waterproof splicing method.
CAUTION: All wire splices and field connections must be waterproofed to prevent short circuit to ground and subsequent controller damage.
Connecting Hydraulic Control Tubing
1.Route control tubing from the controller to the sprinkler location(s).
Note: Leave an 18" (45.7 cm) service loop of tubing at each sprinkler to facilitate movement of sprinkler and service operations. Refer to Table 2 for tubing run length and sprinkler elevation information.
2.Flush tubing thoroughly to remove all air and debris.
3.Remove the tube retainer and poly cap from the tubing adapter at the base of the sprinkler.
4.Slide the tube retainer over the end of the control tubing and attach tubing to adapter.
5.Slide tube retainer over adapter area to secure tubing.
Table 2: Hydraulic Control Systems
*- All hydraulic connections on Toro valves are 1???4" insert type.
-Control line pressure must be equal to or greater than mainline pressure.
-Control line pressure range is 40 to 150 PSI.
System Start Up _________________________________________________________
The following is a recommended procedure that will protect system components during system start-up. The procedure is based on a velocity fill rate of less than 2' (.61 m) per second. See Table 3 below.
Table 3: Recommended System Fill Rate
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.
1. Use a jockey pump only to fill the system at a velocity fill rate of less than 2' (0.61 m) per second.
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. See Warning above.
2.At all tees and greens use quick coupler keys 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 constantly while filling the system.
3.After water has filled all lines and all air is removed, remove the quick coupler keys.
Pilot Valve Operation (Electric Models Only) ________________________________________
Nozzle Trajectory Adjustment Procedure _______________________________________
Note: The nozzle trajectory is factory pre-set at 25 degrees.
1.Insert the multi-purpose tool (P/N 995-83) into the slot provided in the top of the cap. Pull the riser assembly up, then grasp the assembly to hold it in the popped-up position.
2.Remove the cap retaining screw and cap.
3.Using a 5/8" nut driver (P/N 995-99), turn the nozzle/housing assembly left to select 15?? trajectory as shown in Figure 4. Turn the nozzle/housing assembly right to select 25?? trajectory as shown in Figure 5.
4.Install the cap making sure the top the nozzle housing is correctly nested in the cap.
5.Install the cap retaining screw.
6 Activate the sprinkler to check the spray trajectory.
Figure 5
Troubleshooting _________________________________________________________
??? Pilot Valve
Possible equipment failures with causes and corrective action are listed below.
Servicing Procedures ____________________________________________________
The DT series sprinklers are designed to provide the user trouble-free operation for many years without scheduled maintenance. If it becomes necessary to disassemble the sprinkler to correct a malfunction or replace a component, all internal parts of the sprinkler can be accessed from the top. Refer to the Troubleshooting Procedure in this manual in the event of a malfunction. Some special tools are required for disassembly and/or maintenance of the sprinkler and are available from your Toro dealer.
Servicing Sprinkler Mechanism
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.
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.
remove snap ring from sprinkler body. See Figure 7.
2.Use valve removal tool P/N 995-08 for DT34 or 995-09 for DT54 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 enabling valve removal by pulling straight up and out. See Figure 8.
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.Reinstall valve assembly using valve insertion tool P/N 995-76 for DT34 or 995-101 for DT54 as follows:
???Load snap ring on insertion tool carrier with stepped side against carrier as shown in Figure 9. While holding snap ring in compressed position, 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 (DT54 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.
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 10 for the following procedure.
8.Remove diaphragm assembly (15), piston (14), spring (13), traveling adjuster (12), pressure adjuster (11) and o-ring (7).
9.Remove selector shaft assembly (9) and plunger assembly (5). (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 368-0044 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 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.
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.
