[Matt Gibson]

Its direct drive (coupling)

Yeah its got the boiler

Im kind of leaning toward it being the pump but ive changed most of the internals.

Ill get a couple of pics when im down there tomorrow

[chris scott]

Slipping coupling/shaft?

[Matt Gibson]

That was mentioned to me, but it seems like when you pull the trigger, the pump just takes longer to build the pressure, there is no nois3s, juddering, or rev ups. Everything seems perfectly normal.

Its a puzzler, and I was starting to think maybe this is just the way flowplant machines are set up.

[BDCS]

Flowplant ? Have you spoken to them ? If it is a flowplant they are really helpfull

[Matt Gibson]

Not the flowplant branch in scotland. not helpfull at all unless your buying a brand new machine or thousands of pounds worth of chemicals they arent interested.

[Kenny83]

Have you got the pressure up on it yet matt? does it unload properly now?

[Matt Gibson]

Have you got the pressure up on it yet matt? does it unload properly now?

Hi mate,

its always unloaded properly. when i pull the trigger, no water RTT. but im still only getting 2300psi max. when i let go of the trigger it pressurises up to full then unloads. im gonna have a play with it today. if ive got time im gonna change the pump and check the coupling out and probably do what chris said and run it just as a normal washer (pump-unloader-hose-gun) and see how it runs. atleast then i can rule things out.

[Kenny83]

Sounds like a trip to the engineers, at least then they will sort it and if they don't then you won't be out of pocket?

[Matt Gibson]

Well, i changed the pump over today to a WS201 i had in the lockup. Got a little bit more pressure. Its pushing up towards 2700psi now, (only about 2200/2300 before with the hawk pump) but you can certainly feel the flow with the 201 running at 1750rpm 

The extra flow makes up for the little bit of lack of pressure.

Didn't get a change to run it simple like Chris said.

Im starting to think the drop in pressure (when you initially pull the trigger) is just how these Flowplant machines are set up. The guy at Flowplant didn't have a clue when i rang today.

Needed it running again for this weekend, then a few days for it next weekend, then i might bypass the boiler/safety valve etc.. and run it like a straight froward cold washer. See if that makes any difference. If it does, i can narrow the problem down to the boiler, or the safety valve.

Bit over it, but glad its running better, higher flow and more pressure. hopefully find the problem if not, ill sell it.. 

[chris scott]

Ditch the safety valve and fit a burst disc.

[Matt Gibson]

Ditch the safety valve and fit a burst disc.

I wouldnt even know where to start with a burst dics. Just looked at the burst disc holder. It just looks like a nut.

[BDCS]

It fits a 1/2" nipple and is just a nut with a plastic disc fitted that bursts when the pressure exceeds 110 % of the running pressure  - you get very wet when they go, usually when you get a blocked jet in the nozzle

[Matt Gibson]

Cheers mate. ive seen them before online but never quite knew where they went