If anyone has questions about (industrial) pressure washers drop me a line

Novascotia632 · May 11, 2013

Since the posts on here have helped me I thought I'd offer my knowledge to help anyone with issues you may have or question about hot or cold pressure washers. I spent many years repairing and building washers and should be able to help. I don't sell any parts or units anymore but I still have the know how and the ins and outs about what makes these things tick. So if you have an industrial one (didn't buy it for a couple hundred bucks) and its giving you issues i may be able to point you in the right direction. No offence to anyone who may have a home owner electric thst came out of a box washer, they do work good, but can also be a pain in the butt to fix and alot of time you can end up spending more to repair them than it would cost you to buy a new one. That being said, if its a Hotsy, Landa or along that type of washer, hot or cold gas or electric and you are a do it your self type of person, ask and I would be happy to try and help with issues, there is not alot I have not seen or done with these.

Impact-vector · May 11, 2013

I'll take you up on this! I have a shark hot water pressure washer and I need a rupture disk. Is there another option for this like a pop off valve? Other than that. Any good sources so I don't have to pay $40 a disk?

Novascotia632 · May 12, 2013

Impact-vector said:
I'll take you up on this! I have a shark hot water pressure washer and I need a rupture disk. Is there another option for this like a pop off valve? Other than that. Any good sources so I don't have to pay $40 a disk?

Yes you can remove the disk assy, plug the port hole and then install a pop off valve on the inlet side of your coil. Follow the hose that leads from your pump to your coil, there should be an inline tee at the coil with a threaded plug in it. Remove that plug and that is where your pop off will go. Make sure your pop off is rated for just over the max pressure of your unit. I've found that those rupture disks don't really hold up and the hotwater doesnt help. Having the pop off on the cold side makes it a bit more easy on them and if they do go the hot water in the coil will mix with the cold water from the pump when it blows lowering the temp of the water being discharged. You may also want to shove a piece of hose over the pop off and direct it towards the ground, this will make it much more safe if the valve blows off. hope this helps. If memory serves me correct there are 4 pressure ranges, 1200 max psi, 2400 max psi, 3600 max psi and 5000 max psi. They have an allen screw in them that you can turn to adjust the setting.

Impact-vector · May 12, 2013

Novascotia632 said:
Yes you can remove the disk assy, plug the port hole and then install a pop off valve on the inlet side of your coil. Follow the hose that leads from your pump to your coil, there should be an inline tee at the coil with a threaded plug in it. Remove that plug and that is where your pop off will go. Make sure your pop off is rated for just over the max pressure of your unit. I've found that those rupture disks don't really hold up and the hotwater doesnt help. Having the pop off on the cold side makes it a bit more easy on them and if they do go the hot water in the coil will mix with the cold water from the pump when it blows lowering the temp of the water being discharged. You may also want to shove a piece of hose over the pop off and direct it towards the ground, this will make it much more safe if the valve blows off. hope this helps. If memory serves me correct there are 4 pressure ranges, 1200 max psi, 2400 max psi, 3600 max psi and 5000 max psi. They have an allen screw in them that you can turn to adjust the setting.

Interesting! I thought the reason for the pop off was the heating coil raising pressure. Is that something I don't have to worry about? Right now I have a rupture disk from a us jetting machine for cleaning drains. It's a 6000psi disk (the pressure washer is 4000) but if I let off of the trigger after any use it blows the plastic disk to pieces. :/

Novascotia632 · May 12, 2013

Impact-vector said:
Interesting! I thought the reason for the pop off was the heating coil raising pressure. Is that something I don't have to worry about? Right now I have a rupture disk from a us jetting machine for cleaning drains. It's a 6000psi disk (the pressure washer is 4000) but if I let off of the trigger after any use it blows the plastic disk to pieces. :/

Your coil does not raise the pressure, however if your burner does not shut off when you release your trigger gun the burner will super heat the water which will cause the rupture disk to blow. Do me a favour and fire your machine up, turn your burner switch on and pull then release your trigger a few times, your burner should turn on when you pull your trigger and shut off when you release. Make sure you have a pressure nozzle in the end of your wand, I'm not sure if your unit has a flow switch or pressure switch that controls your burner but by putting the nozzle in that will cover both. Give the burner a try and let me know what you find out, you may need to do a bit more digging

Impact-vector · May 13, 2013

Novascotia632 said:
Your coil does not raise the pressure, however if your burner does not shut off when you release your trigger gun the burner will super heat the water which will cause the rupture disk to blow. Do me a favour and fire your machine up, turn your burner switch on and pull then release your trigger a few times, your burner should turn on when you pull your trigger and shut off when you release. Make sure you have a pressure nozzle in the end of your wand, I'm not sure if your unit has a flow switch or pressure switch that controls your burner but by putting the nozzle in that will cover both. Give the burner a try and let me know what you find out, you may need to do a bit more digging

Let me start by saying i really appreacate the help! It has a pressure switch. The unit does turn off the burner when I release the trigger.Logically I thought the increased temperature caused a pressure increase (google just reminded me thats only for gasses) if i have the burner off and running as cold.. no issues! if i have it on and use it for 3+ minutes and let off the trigger.. BOOM! if i have the burner on.. use it and turn it off before releasing the trigger.. no issues Only thing I can think of for justification is if the heat isnt good for the plastic disks and causes it to fail. Ill disconnect the rupture disk and move it. Thanks again!

Novascotia632 · May 13, 2013

Impact-vector said:
Let me start by saying i really appreacate the help! It has a pressure switch. The unit does turn off the burner when I release the trigger.Logically I thought the increased temperature caused a pressure increase (google just reminded me thats only for gasses) if i have the burner off and running as cold.. no issues! if i have it on and use it for 3+ minutes and let off the trigger.. BOOM! if i have the burner on.. use it and turn it off before releasing the trigger.. no issues Only thing I can think of for justification is if the heat isnt good for the plastic disks and causes it to fail. Ill disconnect the rupture disk and move it. Thanks again!

No worries, glad to help, Hotsy now owed by Karcher who also makes Shark came out with those disks a few years back and they caused alot of grief for alot of people. Most of the pressure relief valves on the market are only rated up to 150 deg. F, hotsy does not have a rating listed for theirs. There is a S3 valve made by interpump which is rated to 165 deg and adjustable up to 10,000 psi however they are good but expensive. I think you best bet is to move it and put the pop off style in place on the cold side, giant pump is the most common one which I have used many of them and had good results. If by chance something fails and the burner does stay on the pop off should still let go but if it doesn't, your pressure hose after the coil will let go prior to you hurting the coil. Most other manufacturers put the pop off or relief valve on the cold side. Good luck, if you have any other questions just drop a line.

Tazza · Sep 5, 2014

Novascotia632 said:
No worries, glad to help, Hotsy now owed by Karcher who also makes Shark came out with those disks a few years back and they caused alot of grief for alot of people. Most of the pressure relief valves on the market are only rated up to 150 deg. F, hotsy does not have a rating listed for theirs. There is a S3 valve made by interpump which is rated to 165 deg and adjustable up to 10,000 psi however they are good but expensive. I think you best bet is to move it and put the pop off style in place on the cold side, giant pump is the most common one which I have used many of them and had good results. If by chance something fails and the burner does stay on the pop off should still let go but if it doesn't, your pressure hose after the coil will let go prior to you hurting the coil. Most other manufacturers put the pop off or relief valve on the cold side. Good luck, if you have any other questions just drop a line.

My dad is considering bying one off a mad mate of his. It worked great when he got it home, but now the relay controlling the diesel injector is not working. It works as a pressure washer, but not as a hotsie. I rigged it up today to by-pass the relay but as the heat is regulated by a sensor in the discharge port of the machine, it means the water in the coil can boil and be damaged.
It seems to be a board issue, it is an Omega, not sure if you have that brand over there or if it is just re-badged.
Can you get boards for these? or are there ways to by-pass the electronics? i figured if the price is right, and a board is too expensive, i can always hook up a small computer to it so it will shut the burner off as soon as the wand trigger is released.

ffpup · Feb 2, 2015

Tazza said:
My dad is considering bying one off a mad mate of his. It worked great when he got it home, but now the relay controlling the diesel injector is not working. It works as a pressure washer, but not as a hotsie. I rigged it up today to by-pass the relay but as the heat is regulated by a sensor in the discharge port of the machine, it means the water in the coil can boil and be damaged.
It seems to be a board issue, it is an Omega, not sure if you have that brand over there or if it is just re-badged.
Can you get boards for these? or are there ways to by-pass the electronics? i figured if the price is right, and a board is too expensive, i can always hook up a small computer to it so it will shut the burner off as soon as the wand trigger is released.

Ive got a Karcher hds 1210 I thinks that the number. It wont build all the pressure its supposed too. Builds about 1500 lbs supposed to be about 2200 lbs. Any suggestions?

Tazza · Feb 4, 2015

ffpup said:
Ive got a Karcher hds 1210 I thinks that the number. It wont build all the pressure its supposed too. Builds about 1500 lbs supposed to be about 2200 lbs. Any suggestions?

I'd check the relief, it may have a broken spring or have bad seat.

ffpup · Feb 5, 2015

Tazza said:
I'd check the relief, it may have a broken spring or have bad seat.

Ill check that. Thanks

If anyone has questions about (industrial) pressure washers drop me a line

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