Monday 26 January 2015

Unusual sprinkler problem

I had noticed an unusual water pattern around one of our sprinklers on the 11th fairway on the weekend. When I turned the twin row sprinklers on to test them, one popped up normally and the other dribbled out and wouldn't pop up properly.

Irregular watering pattern on the 11th fairway

After dismantling the sprinkler, checking the valve assembly, solenoid assembly, selector stem and the screen at the base of the sprinkler casing, I reassembled the sprinkler and gave it a test run. Still no luck. With the sprinkler drive removed from the casing and manually turning the sprinkler on it appeared to have decent flow. I then reassembled the sprinkler again and gave it another run - still no good.

Removal of the sprinkler

Having tried everything I know to find an obstruction in the sprinkler the next step was the pipework. Starting with the swing joint I found shards of broken fibrolite pipe in one of the elbows and further investigation found more in the pipe connecting the swing joint. It took some time to remove it all and recommission the sprinkler.  Again another test and success!!!

Debris in swing joint

Debris from the pipe

This debris is the remains of damage caused by the earthquakes 4 years ago!!! Who knows how many more times we need to do this. 
Sprinkler now working perfectly



  

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