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VALVE WON'T OPEN | (a) Plugged controller discharge line or discharge port in pilot valve. |
(Hydraulic) | – Verify by checking for discharge at discharge line when station is |
| activated. If no discharge, refer to Controller Service Manual. |
SPRINKLER WEEPING | (a) Damaged or blocked valve seat. |
(Slow leak in valve) | – 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. |
SEVERAL VALVES ON DIFFERENT | (a) Control tubing leak which lowers supply pressure to other stations. |
STATIONS FAIL TO CLOSE | – Turn controller from station to station until a station is reached where |
(Hydraulic) | 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 from controller.
(d)Plugged supply line filter.
–Replace filter if more than 3 psi (0.21 bar) differential exists.
Servicing Procedures ____________________________________________________
The 800S series sprinklers are designed to provide the user
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 Sprinkler Mechanism
Note: Refer to Figure 3 for the following procedure.
1.Remove cap screw (1) and cap (3).
2.Insert hooked end of
3.Insert hooked end of
4.Grasp return spring (11) and riser (13) firmly and hold in place while removing nozzle base (5). Turn nozzle base assembly counter- clockwise to remove.
5.Carefully release tension from return spring.
6.Remove spring and seal
7.Remove rock screen (16) from bottom of riser assembly by turning it counterclockwise with edge of
8.Remove
9.Remove drive assembly (14) and stator (15) from riser assembly by carefully pressing on end of threaded shaft.
10.Using a 5/8" nut driver (P/N
11.Using a 7/16" nut driver (P/N
12.Thoroughly clean and inspect all parts and replace as necessary. Reassemble in the reverse order.
Note: During reassembly, ensure snap ring is correctly installed and fully seated in snap ring groove.
Figure 3
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2
3 |
4 |
5
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7
8
9
10
11
12
13
14
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16
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