Pressure guage replacement

[pavelmac]

Hi,

I've bought a new house that has a pool and I'm just learning the ropes. The pool is a 50,000l built in above ground unit with pump and sand filter. The pressure gauge doesn't read anything so I wanted to replace. After watching a few vids I thought I understood. Switch the pump off, release pressure then remove and replace gauge.

So I switched off the pump, and removed the "pressure release plug" and water just streams out with no sign of stopping. I've let it run and filled a few buckets, before I replugged. How much water should I expect? Manual says to release pressure release value but no mentions of large amount of water.

Any ideas?

Cheers

[Teapot]

You should have valves that isolate the flow of water both before the pump and after the filter. Turning these off will allow you to change the gauge.