Question about Ingersoll Rand Type 30 Electric Driven Two Stage Horizontal Air Compressor 120 Gallon Fully Packaged Ir 2545E10VFP

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No pressure could the unloaders being stuck open cause a los in pressure and what causes the unloaders to stick open. Next if the unloaders are stuck closed could that trip ther motor to overlad.

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Unloaders fail due to carbon deposits on seat. Unloaders can be found in the head or in the tank. Failed unloaders /check valves cause the motor to strain but rarely prevent pressure from building. Events that prevent pressure from building are as follows: restricted intake; cracked or dirty valves in the head; gaskets torn or burned causing pressure to be redirected into the intake. Root problem is caused by carbon deposits and heat. Carbon can be formed if oil is drawn into cylinder due to worn rings or the wrong kind of oil is being used. Compressor oil is formulated to prevent carbon. Engine oil will cause heavy carbon deposts. Replace gaskets worn or broken valves and bad check valves to restore pressure. enjoy

Posted on Nov 29, 2008

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Motor runs, water flows but no pressure. I hope someone has an idea to the cause.


I presume you have put a nozzle onto the outlet. There will be no pressure without a nozzle.

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My honda excel 2600 psi pressure washer do not have any pressure when i squeez the trigger


Trash in, worn or damaged inlet and outlet valves are one possibility. Unloader valve stuck open or badly worn would also cause low pressure. Wrong spray nozzle size is another. Is the nozzle the right size for your pump?
Is water leaking from under the pump? That would show worn high pressure seals.

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1 Answer

Air compressor not unloading


Check the pressure switch. The unloader valve is actually in the pressure switch where the small air line from the tank check valve attaches to it. When the pressure switch turns the motor off it then lets the head pressure bleed off so the motor can restart the next time pressure drops in the tank. If it's not working and bleeding off the head pressure the cold start valve (the one with the pin in it) also won't open so the motor can restart and warn up properly.

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Is the reed valve part of the pressure switch


relief valve should only open in a over pressure condition. If it is opening prior to reaching pressure ....replace it.

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1 Answer

The engine will start but I'm not getting enough pressure when I press the the sprayer gun. Water is coming out but no pressure. Not sure what to do.


This can be caused by three different components. Either your unloader valve has failed, your valves have stuck open in the head of the pump or your water seals are worn. If you get an initial jolt of pressure when you squeeze the trigger then we know the problem lies in the unloader valve and you will need to purchase an unloader valve repair kit. If not you will more than likely have to replace the valves and seals in the pump.

Sincerely,
Aron Kerr
Landa Northwest
www.landanw.com

Mar 06, 2011 | Karcher 2500 PSI Pressure Washer

1 Answer

Hi k2 series have alot of trouble does not always start on full pressure pull the trigger it just squirts a stright line of water out of the gun takes a while to get on full pressure if at all. many thanks...


HI This is caused either by a partially blocked nozzle on the end of your lance or the unloader valve sticking inside the machine. You can clean your nozzle by inserting a pin etc inside the end to clean it out. If this doesn,t work then it is most likely the unloader sticking. You need to remove the yellow cover and remove the unloader valve assembly.This is the bit that goes in and out when pressing the trigger. Remove this section then grease and oil the unloader and re fit. This should cure your problem.

Jun 10, 2010 | Karcher K2.26 Electric Power Washer

1 Answer

Once the trigger is released it won't starting spraying again.


I have the same problem. This is the responce for Karcher......

The unloader valve may be sticking, or is dirty. It probably needs to be cleaned and may need to be replaced, it is inexpensive. It gets a lot of use, but extends the life of the pump. The function of the unloader is to allow the machine to run in a bypass mode while the trigger of the gun is closed. First, a lack of high pressure can be caused by: 1. Insufficient water feeding to the unit, so check that the water is turned on all the way and that there are no kinks in the hose. 2. The inlet filter may be clogged. (it will need to be removed and thoroughly cleaned). 3. An internal water leak. 4.Also, low pressure can be caused by worn spray tips. If you have checked the first three with no resolution, the problem is internal and could be as simple as a sticking unloader valve. If you are mechanically inclined, you can clean this valve yourself and greasing the o-rings (use lithium based grease), or take it to a local service center. You do not need to take the pump apar
t. The unloader valve is located under the cover, and is secured with 2 bolts. (Use needle nose pliers to remove the valve) For those units with pressure and volume controls, the unloader is located under the pressure and volume control knobs themselves. Do not take any other bolts off or you will open the pump and lose the pump's oil.

Note: Lithium based grease will prevent future failure of the unloader valve.

Also, check websites such as fixya.com for tips and how-to info particularly on cleaning the unloader valve. Be sure to use lithium grease if you reassemble it.
I am going to check the manuel to see where it's at

Sep 24, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

NO PSI


have you checked to make sure that keyway is installed between electric motor and pump. also adjustment on unloader valve may be incorrect. If the big brass nut on the unloader is able to be turned by hand, then this is probably your problem (running pressure and spike pressure needs to be set and locked down using a pressure guage). does water come out of nozzle at all? if not, tip being stopped up may be the problem. trash between unloader ball and seat can also cause no pressure (usually caused by a burr left inside brass pieces during the manufacturing process). I have seen all the check valves stuck on a brand new unit from sitting on the shelf for so long, but this is usually the case with General Pumps.

Jan 07, 2009 | Northstar Pressure Washer 3000 PSI

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