What PSI are you using for hood systems? and why?

mtngoat

mtngoat

Member
So what PSI are you gentlemen usiung for hood cleaning.
And how many GPM?
And why?
Goat.
 
Pressure

MTGoat,

We use a 3000 psi @ 5.2gpm machine. Depending on the system being cleaned we will use from 500 psi on the hoods to 3000 psi on the ducts and any range in between. I normally tip down to achieve the desired pressure but when water is a factor I can throttle my engine down for a short period to decrease the water flow as well as the pressure. Some of our first time cleanings required the full 3000 psi. I like to use the minimum amount of pressure and water as possible to accomplish the task. All of this is of course with 175 to 200 degree water.

Devis
 
Anybody using 1600 psi equipment?
I find that most of the time you dont need 3000 psi, Unless like you said its bad.
How about electric machines VS Gas powered?
 
We have some systems that were heavy old grease and found that opening up (ballvalve) our large pump (10 gpm) and flooding the duct works real well. Of course we are still pumping 200 degree water. As it turned out we didn't use much more water!

Depending on the system we may have to use a 1500 psi 2 gpm electric because we can't use our truck mounted equipment. Others still need 3000 psi, rotary tip, etc, etc.

Dave Olson
 
We use almost exclusively an electric 1500 psi at 2 GPM, most of our work is reservice now and the smaller machine does fine, we do have 3000 psi 5 gpm available if needed.
Reason for the smaller machine, less water to reclaim and clean up, electric machine is quieter and easier to haul around.
 
Hello Dave-
I'm suprised to here with 10 GPM you still use about the same amount of water.

Bryan L- Yes I like the smaller equipment,You can bring the bugger inside if you have a long way from truck to jobsite
Mtngoat.
 
I would like to get a small electric like you fellows are using for back up and to possibly speed up our process when two units can be used. Could you recommend a brand and what are the typical voltage and amp requirements?
 
I recommend a 110V pump rated at 16.8 amps on a stand with wheels. Around 1500 PSI, and uses the water from the restaurant. No hot box in other words.

We clean a hockey arena with 13 separate restaurants on all different levels, and it has more than paid for itself just with that one job.

Hurrican Cold Water Pressure Washers

It weighs about 60 pounds or so, and it's fits very nicely in my trailer that I use.

I also use it as a backup if my main machine should go down for some reason.
 
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We use a small electric with a Cat pump. It can handle up to 190 degree water. Need this when hooking up to Hot water. Requires a 20 amp breaker.

Here is a picture of one of ours. Got them from Northern Tool.

mtngoat - There was a fellow from Canada (Mike Stillwel) that used to visit these boards. He explained volume this way. Throw a golf ball at a surface, now throw a bowling ball at the same speed at the same surface. The impact difference that these two balls would have on the surface is much the same as the difference in low vs high water volume. We hit the surface so much harder it did not take as much water and less time!

Dave Olson
 

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Good analgy Dave.
I remember Mr.Stillwell. Whatever became of him?
Goat
 
He posted on all of the boards when he was leaving. He did not say but he may have left the industry. Real nice fellow. I miss his insight.

Dave Olson
 
we use a Hydro tech 110 volt machine with burner 1500 psi, we also have small machines with out a burner made to accept hot water, for the places we can't get cloes enough ( malls, airport ect) The small machine with out butner is a karcher Model HD 655 h http://www.karcher.com/usa/products/td_pages/cce_hd_electric.shtml

That's the best I can do for a link, not much info there. it is made for the food service industry and can take hot water up to 180 with auto shut down when the trigger is released.
 
Our backup is a Northstar 2/1500 with Cat pump that will take 190 degree incoming water. In addition it will take dry run up to one hour, and pickup hose can be dropped into pot of hot water (we once used the coffeemaker to obtain 183 degree water) in the event water heater is inoperable. It is item #157850 at Northern Tool. I think Dave is showing that same model. It is inexpensive.

Northern will treat you right. Our pump dropped the lower end, thus trashing the pump, months after the 2 year warranty was exhausted. It was a factory defect, and Northern's representative went to a lot of trouble to obtain and ship us a new pump at their cost - they even paid the shipping! I have no motive for recommending them other than I am grateful for their excellent customer service.

Richard
 
Dave or Richard
Did that small electric come with hot water seals or did you install them.
The one I found doesn't mention hot water. Looks like the same machine though
 
Bryan,
It has the high-temp kit installed at factory, and is specifically rated at 190 degree incoming, and one hour dry run. My understanding (from Michael Stillwell - wish he were still posting) is that Cat is the only pump that can achieve this.
Richard
 
Could you tell what they were doing with the wastewater from the roof?
 
Bryan-

I've heard good things about Karcher, how much for th unit you got?

Richard-

Is Northern on the web?

I use a 1500 psi, CHDCA special of course. Seems to have plenty of pressure for most jobs. :cool:
 
NorthernTool.com
800 533-5545

Less that 1/2 the price of a Karcher. Service cannot be beat. I have nothing to gain - only that I appreciate their quality customer service.

Richard
 
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