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Yes costs less and also provides 2 batteries. I went with shinexpro since they have a decent after sales support who is very responsive in whats app

Over last 4 weeks I have used it about 4 times now and I am quite satisfied with it. The flow rate is about 8 liters per minute.
The machine runs cool after 40 mins usage, I think it can clean 2-3 cars without overheating the motor, obviously considering there is a small gap while cleaning with soap.

Is the pressure advertised on these washers actually correct? I saw some Youtube videos where most machines actually had a pressure of 40-50 Bars instead what was advertised. Though, I still don't think there will be so much variation. Has anyone tested this?

Also, I am keen to buy Woscher 969. It looks good atleast on the paper. Has anyone used this brand before?

No it isn’t. It’s completely fluffed up, small units will do a max of 8L/min at 70-80 bar. Anything more and your motor size will go up.

Not used this one in particular but they’re all rebranded Chinese machines in most cases, can last for awhile depending on the build quality (varies greatly).

240 bar at 10L/min with a 2400W motor lol:

That’s like saying my car goes 0-100 in 3 seconds with a 150hp engine. In other words, physically impossible.

For reference, to get 140 bar at 10-11L/min you’re looking at a 4000W motor minimum. 240 bar at the same flow will require a much bigger motor, it’ll also rip your paint clean off if someone did get within a few inches of a car with such a machine.

Thanks! Though, my understanding was that the pressure is built by narrowing the passage of water. 1st the hose itself, then the gun and an extension. So, a machine throwing out water at 60-70 Bar when encounter a resistance, would probably increase the pressure, though, not sure upto what these vendors specify.

No, that’s not how pressure is built. The hydraulic hose, gun and extension are simply delivery mechanisms. The only point of resistance is the nozzle tip used (that’s why it’s possible to alter the flow and pressure by changing nozzle sizes.) Remove your nozzle and water will flow at near zero pressure with the pump and motor spinning.

The pump’s plungers will push on the water to build up the pressure once it encounters the nozzle, the pump is directly driven by the motor’s spinning shaft. The larger the motor, the more torque it has, the larger the plunger size that can be driven. This leads to higher flow and pressure, depending on the pump design.

It works as a complete system, with the size of the motor and pump ultimately determining how much water flows through (flow rate) and the speed at which said water flow is achieved (pressure).

If you try and overcook the system by using too small of a nozzle, your pressure will go up but your motor will get fried as it’s encountering more resistance in the pump than it was designed for. Doing so will also dramatically increase your current draw and may trip your MCB’s.

Going the other direction is where it gets interesting, using a larger nozzle to increase flow at the cost of pressure. For eg. if a pump is rated at say 160 bar at 8L/min, you can use larger nozzles to get 10L/min at say 100 bar (which is more suited for washing cars as flow rate is much more important than pressure.) Doing this is perfectly fine and won’t harm anything.

AR XW 30.25 Pressure Washer Review.

Picked up a new washer, posting a short review as some folks were asking me to do so.

Technical Specs:

Pump: Annovi Reverberi XW 30.25
Motor: Crompton 440V 15HP/11.2kW Induction
RPM: 1450
Hose: 9.5mm 20m R2 dual steel braided with swivel
Flow Rate: 30L/min - 8 GPM with 25 degree nozzle
Pressure: 120 bar/1740 psi
Stock nozzle size: 120
Inlet pipe: 1.5” (38mm)
Weight: 140kg
Warranty: 1 year
Pump oil change interval: First 50 hours of operation, thereafter every 200 hours
Pump oil grade: SAE 15W-40 full synthetic
Pump oil quantity: 1.2L

Background:

I was moving my smaller unit back home for domestic use and required a new machine at the shop to take its place, so decided to go big this time.

There are many good pump mfg’s out there from Annovi Reverberi (AR), Bertolini, Canpump, Karcher, Comet to slightly cheaper General Pumps, etc. but if you want the best, you go with AR.

(Sidenote about Kranzle, I did consider their commercial line but the heaviest unit they make is the 440V Quadro 1200 TS, which tops out at 19L/min.)

Dropped a mail to Annovi Reverberi inquiring about their dealer network around Delhi NCR and sure enough they had a guy in Faridabad.

Had a long chat with the dealer about after sales and the right pump-motor combination I should go with. He answered all my questions patiently and I felt I won’t have issues with spares/service post purchase so decided to go ahead.

He kept pushing smaller 5-7HP units as he felt they are enough for cars. As I already have a 5HP washer, it didn’t make sense to repeat with a similar machine. Just like more power is always welcome with cars, more flow is always nice with pressure washers.

The Machine:

AR has many pump lineups, but for high flow at 120-160 bar which was my specific requirement, the XW line is the heaviest one can get and it’s made in Italy (some of their smaller units are made in their China factory). 24mm solid shaft, full ceramic plungers should ensure a very long service life.

I did have them customise the unit slightly, added a stainless steel cover, 20m hose (standard is 10m) for ease of reach, auto cut (not part of standard equipment).

Motor is a standard Cromtpon Greaves 3 phase 440V 15HP/11.2kW, it needed its own 128A MCB running a 6mm four core cable straight to my mains. Added a Scame IP67 440V plug and socket as well in case I want to disconnect the machine easily for maintenance/cleaning. It’s a 5 pin 63A industrial type (3 phases + Neutral + Earth), Scame makes top tier plugs and sockets, built to withstand an apocalypse .

One issue I ran into was getting quick connects for this size of pipe, no one makes QC fittings for 1.5 inch pipes. Even the AR dealer was using jubilee clips, but they are painful to work with and start slipping after some time. Finally found a mfg in Gujarat who makes industrial camlock connectors, these are just like quick connects but very heavy duty and seal perfectly with no leaks.

Interestingly, due to the massive flow (30L/min) I’ve kept the pressure at just 120 bar to ensure safety on paint (my other unit is at 150 bar, 12.5L/min). Despite this, the gun recoil on startup is quite a handful and makes my 5HP unit feel anaemic in comparison. It will knock you down if you’re not standing with legs apart and arm muscles ready to control it.

I love it though, it’s like a wall of water hitting the paint, and since we’re at just 120 bar, you rinse freely without any risk. Even as someone who’s been around high flow pumps before, this thing puts out so much water it’s a real joy to use and makes short work of any job.

AR claims it can run continuous duty for over 14 hours without stopping, while I have no intention of getting anywhere near that continuous runtime, it does speak to the strength of the pump internals. At 140kg, it’s not something you’ll want to move often, but when you do, once you have the right technique it’s relatively easy.

To conclude, it’s a brilliant machine and exactly what I wanted. As far as cars go, I can finally say, I have more than enough flow and will probably stick to this motor-pump combo for a very long time.




















Compared to my smaller unit-

https://youtube.com/shorts/wA3SyBoS5...AwSI7j5uE2Zxxz

All three-

https://youtube.com/shorts/uV0YC0-Tb...AFCW6bUQILmk_l

A monster of a pump! Very impressive. Congratulations and happy washing :Cheering:

The little baby which pumps out all our grey water, but is sized to prevent flooding in cyclones and cloud bursts, getting rid of what nature throw at 3,500 sq ft of house+garden, is a mere two hp!

What is the noise level when your new beast is in action?

Yes the pump is insane. Helps reduce washing time to less than half of what 5-7HP machines take (which alone was a huge jump from 3HP washers).

Plus it’s a joy to use, once you use a higher flow machine, you never go back to smaller ones. Although I will say it takes some getting used to, washed my car myself today and handling the constant torque of the gun gives your arm a nice workout, guys who go shooting regularly will get what I’m saying, the recoil can do some damage if you’ve not braced correctly. Still, wouldn’t have it any other way.

Regarding your pump, keep in mind that if we only want flow with very little pressure, we don’t need a lot of power. We use a small 4HP pump to fill tons of water in our tanks nearly everyday in a short time.

But the minute we try and increase the pressure to nearly 2000 psi and we still want high flow, we need a lot of power and torque to achieve this.

Noise level is the same as my smaller unit, not checked with a decibel meter but I don’t feel a significant difference. If anything the motor is slightly quieter but has a deeper sound to it. You can stand next to it running and won’t have to raise your voice to talk. I much prefer it to the high pitched whine some small machines have.

Does a "proper" pressure washer remove the slightly oily-dusty layer that seems to accumulate on cars?

Many years ago, I had one of the small Bosch domestic washers. It shifted loose dust and even dislodged crow crap, but it never left clean paint.

Hello members,
I am presently using a ShineXpro cordless pressure washer that is widely available online. I can not use a AC operated pressure washer as I don't have access to any ppwer outlet where I am parking my car. Although the pressure of the ShineXpro one is OK for day to day wash, I want to invest in a cordless battery operated pressure washer which is a bit more powerful and atleast lasts for 45 mins on battery.
Kindly suggest which one to go for as there are not many options available online.

Regards

Saubhik

Damn that looks big and scary. But just curious if this can this affect the paint or a ceramic coating due to the bigger pressure?

No it wont, not without soap + wipe. Just buy a waterless wash, wet a rag with it and wipe :)

Yes and no. On a car that was contact washed in the last 15 days, a high flow washer can get you to 90%+ clean paint, it’ll look near perfect from anything more than 1ft away.

10% of road film will however remain no matter how much pressure or shampoo you use, even heavy alkaline + acid touchless shampoos cannot get you past that 90%, for that we need a contact wash.

Not a lot of options to be honest. Look for 40V trolley type washers like these:

https://www.industrybuying.com/press....PRE.724300385

https://www.industrybuying.com/press...0%26%20Battery

Keep in mind you’ll have to buy the battery and charger separately for both above.

I’d say it’s big and fun lol: and it’s safer. I’ll explain-

As mentioned above, due to the high flow I’ve kept the pressure at just 110 bar, less than most small domestic units. My other machine does 150 bar and many places use 160-200 bar machines. You need to maintain a safe distance from paint, no matter which pressure washer you use. As for coatings, the resin is harder than clearcoat, if the paint is unaffected, there will be zero damage to a coating.

What damages paint is pressure, not flow rate. By maximising flow, we actually increase safety as we can use lower pressure.

To put it simply, pressure is the speed of water leaving the nozzle, flow is the amount of water coming out.

General advice to folks buying their first washer: don’t bother about pressure too much, it’s mostly used for marketing. Anything above 100 bar will work, pay attention to the flow rate, with cars what really matters is the flow you’re getting.

Thanks a lot for the prompt advice Sir. What I am seeing that these better cordless pressure washers are eye-wateringly expensive. These are surely out of my budget.

I am thinking of buying a normal electricity operated pressure washer and run the pressure washer inside my home and extend the outlet hose all the way to my car. I guess a maximum of 50 meter length outlet hose will do the job. Is this feasible, Sir?

Thanks and Regards

Saubhik