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
2.Use valve removal tool P/N
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
•Load snap ring onto insertion tool carrier with stepped side against carrier as shown in Figure 10. While holding snap ring in compressed position, slide retainer clip in to hold snap ring ears
•Load valve assembly on carrier as shown.
Figure8
Figure 9
•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
Figure 10 |
Snap Ring In |
Retainer Clip |
Snap Ring Release |
Mechanism |
Stepped Side |
of Snap Ring |
Valve Assembly |
Orientation In Carrier |
Press Valve Assembly |
Into Position |
Snap Ring |
Released |
9 |