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Sunday, July 13, 2014

Repairing the Garden Pressure System

It started with the garden pressure pump not cutting in when a tap was used. The controller is mechanical and as with mechanical things it had worn out. Perseverance was a waste of time as nothing would make it work consistently other that the occasional boot. The new controller was acquired and installed easily and the cut in and cut out pressures duly adjusted.

The next problem was that the pump would cut in and out every few minutes. Since there are three independent lines connected all three were turned off and the pump came to pressure and stayed there. That means the problem is in one of the three lines. Turned on line 1. No issues. Turned on line 2. No issues. Tried to turn on line 3 but the gate valve failed. Now that line is permanently off.

No spare gate valves but plenty of spare ball valves. All fine except the ball valves are a different dimension and need adapters which are not on hand. Fine, put up with the inconvenience for a few days until in Raymond Terrace next and collect some more adaptors.

Thinking ahead the decision is to replace the two remaining gate valves as the third was replaced last month, this indicates they are all of an age that could mean imminent failure.. Adapters acquired and two remaining gate valves replaced.

Not so good as both ball valves have cracks and leak which is probably why they were thrown away for us to salvage from the Dungog Dump Shop. Undoing all the good work the working gate valve is reinstalled. The failed gate valve is taken apart and repaired and also reinstalled.

All is not well. Now there are steady leaks from the connectors. Take the whole thing apart again, wash and clean away any grit, apply nylon tape and reinstall. Now the leaks are isolated to another set of adapters. Take apart again. One washer missing in one connector and a distorted washer in the other. Replace both and reinstall. Still some minor leakage in one adapter. Fiddle about for a while and reduce it to a few drops and give up. Time to take a break, Had a gutful of poly pipe repairs.

Of course the original problem of one line leaking is still there. Despite walking the entire line and checking all outlets on that line no faults found.

Time to walk away from the problem for a while. Pump turned off unless needed. A workable if inconvenient solution.

That is how it is possible to waste and entire afternoon and a couple of hours the next morning. Sometimes the cosmos burdens rather than caresses.

1 comment:

  1. Yes, sometimes it gets worse before it gets better.