I have a Simpson PS4240 4gpm. I have it connected with an external VRT3 on loader with a bypass going back to my buffer tank. I am having issues to wear both unloaders. keep fighting each other. I have put the VRT3 at a lower pressure than the built-in unloader on the Simpson pressure washer and I have no clue what to do anymore to get the two to stop fighting.
Do I completely disable the bill on a loader so that way it is only the external VRT3 loader that handles both pressure and bypass because that’s the only thing I have not done yet. Any feedback and suggestions would be greatly appreciated.
(i forgot to add, my pump doesn’t pull and I can’t raise my buffer tank. So I’m using a vevor 5.5gpm pump and lowered the psi. So I’m wondering if it all has to do with the vevor pump?)
Maybe I’m missing something, but why don’t you remove the manufacturers unloader and give it a spin with just the vrt3. That VRT3 is supposed to be a pretty reliable unit. Well, at least that is what the bot monkeys say on the internet.
I’m far from an expert, but I put a gauge after the pump unloader and with trigger pulled, I lowered the pressure to about 1000psi. Next, I put vrt in place of gauge and adjusted it until water was not coming out of vrt unloader unless trigger released. Hope it helps
I appreciate it. I’ve came to the conclusion that because I am using a 5.5 GPM vevor pump to draw from my buffer tank to feed the pressure washer, is where the issue is at. I’m not trying to raise my buffer tank Ridiculously high to gravity Feed my pressure washer. The pump I’m using pumps, the water in pulses and not continuously. Which is what I’m assuming the issue is
Most all shaft driven pumps have had issues pull water without the buffer tank being elevated or fed by a 12v pump . If you continue to have problems, I’d rip that shaft driven pump off and replace it with a gear driven one. Or go buy a commercial belt driven machine.
Your problem is obviously that you’re trying to feed a direct drive pump with a 12v pump. There is no good 12v pump to feed a direct drive with. That won’t work well whichever pump you use and anyway is just another failure point. We need to minimize failure points and create redundancy as professionals.
If you don’t want to buy another machine then your only other option is to buy an appropriately sized gearbox/pump for $1,000 and swap it out on your existing engine, then the machine will suction water from your buffer.
