Toro 69X-01-XX, 69X-06-XX, 69X-02-XX specifications System Troubleshooting continued

System Troubleshooting (continued)

Sprinklers

Possible equipment failures with causes and corrective action are listed below.

PROBLEM POSSIBLE CAUSE – CORRECTIVE ACTION

1.Sprinkler won't rotate (a) Stator too large for nozzle - Use proper nozzle.

(b)Debris wedged between stator and turbine - Remove obstruction.

(c)Drive assembly defective - Replace with new drive assembly.

2. Head sticks up (a) Dirt in riser assembly - Flush out. (See Flushing Procedure.)

(b)Damaged riser - Replace.

3.Poor distribution pattern (a) Nozzle plugged with debris - Clean or replace nozzle.

(b)Nozzle orifice/stream straightener damaged - Replace nozzle.

(c)Low operating pressure - Determine why system overloaded and correct.

(d)Head misaligned during installation (two-speed only) - Realign properly.

4.	Valve won't close	(a) Leak in control tubing - Isolate and repair.
	(Hydraulic 69X-01-XX)	(b) Pilot valve leak in controller - Confirm by observing constant dripping
		from discharge line of controller. Refer to Controller Service Manual.
		(c) Foreign object keeping valve from seating - Remove, clean and check
		valve for damage. Replace if necessary.
		(d) Damaged piston seal or piston assembly - Replace valve assembly.
		(e) Valve not properly communicated to tube in body - Reassemble if
		necessary.
5.	Valve won't open	(a) Plugged controller discharge line or discharge port in pilot valve -
	(Hydraulic 69X-01-XX)	Verify by checking for discharge at discharge line when station is
		activated - If no discharge, refer to Controller Service Manual.
		(b) Water supply to sprinkler closed off - Determine if closure is shut-off
		valve or blockage and correct.
6.	Valve won't close	(a) Leak in pilot valve assembly - Replace pilot valve assembly.
	(Electric 69X-06-XX)	(b) Plugged supply screen on piston - Clean or replace screen.
		(c) Manual control selector on pilot valve assembly turned to "ON" position -
		Turn to "AUTO" position.
7.	Valve won't open	(a) Control (field) wires severed - Isolate and repair.
	(Electric 69X-06-XX)	(b) Defective solenoid - Replace solenoid.
		(c) No power to controller - Establish controller power.
		(d) No power from controller to solenoid - Check for blown fuse and replace.
		(e) Manual control selector on pilot valve assembly turned to "OFF" position
		- Turn to "AUTO" position.
		(f) No supply from main valve and piston - Remove supply tube from supply
		port. If no supply port, repair valve and piston assembly.
8.	Valve leaks	(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 on hydraulic NO sprinklers - Check for low
		pressure reason and correct.

9.Several valves on different stations fail to close (Hydraulic 69X-01-XX)

(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 on 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 on controller - Refer to Controller Service Manual.

(d)Plugged supply line filter - Replace filter if more than 3 psi differential exists.

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