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Simple diagram of a chinese trolly jack thats all I need

The layout of the suction valving pressure release and overload valve

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: dyson blowing top of cyclone air release valve.

It sounds like the same problem I was having. I had loss of suction through he hose then all of the air was coming out through the vent/valve on top of canister. If you are looking at your dyson from the back, look at the bottom. You will see a purple plastic tab on the bottom left. That allows you to remove the plastic u-shaped hose that goes from the hose to the bottom of the dyson. I just removed that and found it was completley blocked. I removed it and the dyson has no loss of suction orair through top valve/vent. I hope this helps. I never post but i'm just excited that I got my dyson working perfectly again.

Posted on Jul 11, 2008

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SOURCE: Ingersol T30 won't shut off and blows pressure release valve

the wire juction box on your compressor has a pressure switch that may be wound in to tight take the cover off the box there should be a switch with a machine screw with nut and washer and spring back this nut off and see if that helps if you go to far you just crank it back in until the switch hit although it may be the other way around you may have to tighten to lower the pressure some of them are made that way if this does not solve your problem send me a picture of the switch and can solve it from there

Posted on Jun 26, 2009

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SOURCE: I need a wiring diagram for the ac to find the high and low pressure valve and the compressor switch .

No you don't. The hi/lo awitch is on the tubing at the drier.

Posted on Jun 27, 2009

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SOURCE: ow do you change the suction control valve on a

5 mm allen key

Posted on Jun 09, 2010

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Official advice and support for Dyson technology

    Verified Fixya Pro

    SOURCE: when upright makes high pitched noise - like a release valve is blowing out excess pressure and wont **** through tube

    Hi there,

    I'm sorry to hear you're having difficulty with your DC14. From what you've described, it sounds as if the relief valve is activating because the wand, hose or U-bend is blocked. This is easy to resolve - please follow the steps shown in our online support guide:

    If you need any further assistance or advice, please call us free on 0800 298 0298 (UK), or 1-866-693-9766 (US) so we can help.

    Best wishes,

    Dyson Online Customer Support

    Posted on Jan 13, 2012

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    2 Answers

    My 15 HP Ingersoll Rand Air Compressor doesn't start at times due to some load. Heard that there is some air getting caught in the Piston Head post its cut off point and hence there is too much

    These pumps have unloaders to help the motor from being overloaded at startup, one type is centrifugal that is built to work off the crank, the other can be a pressure release valve that is set up to release the pressure in the chamber after it shuts down after full pump up. This is typically head as air escaping right after the compressor stops running after a complete fill.

    Here is more information on the pressure release unloader.

    Good Luck,


    Sep 05, 2012 | Ingersoll Rand Air Tools & Compressors

    2 Answers

    The overload keeps tripping

    I have had a Hitachi EC89 compressor for a couple years now. As an Mechanical Engineer with a minor in Electrical, I observe that the motor assembly/capacitor is undersized for the mechanical energy it is asked to produce upon start up. The motor consistently struggles to get up to speed, requiring too much electrical current and then the breaker pops, and you're back to time zero. And the cycle repeats. In other words, the fundamental EC89 design stinks and it should not have been released onto the market in this way. I replaced the capacitor on mine with a more robust G.E. version and it has improved, but fundamentally, there are not enough motor windings to get the system going good & strong, each and every time. Shame on you, Hitachi.

    Feb 08, 2011 | Hitachi EC89 4 Gallon Twin Stack Air...

    1 Answer

    Pump won't pick up cleaning fluid thru plastic suction tube.. Troy Built with 5 hp engine

    The suction tube connects to a small brass piece that has a ball valve. When pump pushes water down hose, it creates suction on the ball valve. The ball valve has to be the right size. Too large, no suction, too small, no suction. The entire world of electronics is based on similar principle.

    When the ball valve wears out, or gets clogged, the pump pressure is not able to lift fluid. Try cleaning valve, but my bet is you need a new part with the ball valve.

    Oct 06, 2010 | Garden

    1 Answer

    I have d55155 and cant get over 60 psi, it never shuts off. how do i tell where the leak, o ring, or teflon tape should go. should the release valve be in a certain position? it seems down all the way

    Could be leak or faulty valve plate in head. Use soapy water and spray all fittings including drain valve and pressure regulator. Repair as needed. If no leak found suspect problem with compressor. Try simple test, with compressor running and has reached max pressure (60psi) remove air filter and feel intake for suction. Be carefull could be hot. The suction should fairly strong. If no suction or actually feels like air is blowing out of intake, suspect valve plate. Parts are available at dewalt service center or Good luck

    Sep 22, 2010 | Black & Decker Dewalt #D55155 2HP 4GAL...

    1 Answer

    When the pool pump is working water flows freely with good pressure but there are air bubbles. when the barracuda is connected the pump looses the pressure, the g3 moves sporadically and the water flow is...

    If you are seeing air bubbles in the leaf pot on the pump, you have an air leak on the suction side somewhere between the pump and the pool. Check the pump lid o-ring for any dirt, leaves, etc. Make sure the O-ring on the lid is not cracked, dry (lubrication like Aladdin's Magic Lube) or compressed or flattened. Also check your union or threaded connections to the pump suction (end) to insure they are tight and sealed. If this is an in-ground pool, and equipped with valves to control skimmers and bottom suction, close each valve separately to see if the air bubbles diminish. If the bubbles diminish when the valve is closed, then the air leak is in the closed section from that valve back to the pump. If the air leak increases, the air leak is in the still open line. Since the Kreepy crawly works on suction and increases the vacuum, the air leak will become more apparent, resulting in a loss of pump efficiency and flow, resulting in lost performance on the cleaner. If so equipped, close off the bottom drain valve and increase the suction on the vac line. I can provide further details as needed, but will need more information from you regarding actual equipment layout.

    Sep 07, 2010 | Zodiac BARRACUDA G3 IN-GRND CLEANER

    1 Answer

    Motor "bogs down" at roughly 120 psi...almost stops

    You suspect this unit as being a two stage because of the unusually high cut off pressure. It is a single stage and the motor really has a difficult task and is being pushed to the limits. to reach this pressure. We usually reset the pressure to lower setting ~~ say around 140. Your pump probably has a leaking intank check valve (brass fitting at tank) or leaking valve plate in pump. Simple tests : with pressure in tank unplug compressor from outlet and listens for air leak around pressure switch. As you unplug the running compressor from outlet you should hear air leaking from pressure switch for just a moment as air is let out of airline from pump to tank. If air leaks out till zero pressure then change the valve. If tank holds pressure then valve probably ok. Next test, with no air in tank and air filter removed, plug in compressor and feel intake port for strong suction. If the valve plate is bad, suction will decrease as pressure neers the 120 mark till the point of feeling that air is actually blowing out of intake. With good valve plate there will be strong suction untill unit reaches set pressure. If valve plate is bad also change the cylinder and piston ring. Good luck with your repair.

    Jul 28, 2010 | Dewalt 2 Hp 4 GAL Air Compressor

    1 Answer

    Auto shut off when trigger released does not activate

    Dear rbaker2,
    Auto shut off is carried out by means of a spill valve or also know as a control valve. When the gun is closed, pressure is built within the machine and within the spill valve. With the pressure the spill valve is compressed and pushes on a microswirch. When this is done the microswitch shhuts the machine down. Now your problem is caused by one of 2 faults. Either the spill valve is faulty or the micro swithch is faulty. Most machines it is the spill valve which mostis the fault. But microswitches are also delicate and also get faulty. A rare reason for your problem is that both the spill valve and the micro switch are faulty. The spill valve and the micro swith, is rarely serviceable. So I advice you change the two of them by new ones. A bit of advice do not leave the machine running with closed gun ...because this as I said builts pressure in the machine and damage is done to internal suction and delivery valves. Sometimes even the high pressure hose can burst. These results can also hurt a person. If you open the machine yourself you often locate the spill valve under a cap with a micro switch and you see a black wire attached to the cap. If you intend to use the old spill valve, this must be lubricated with special silicon grease. The job is very simple. All you have to do is open the cover and locate the spill valve.

    Jun 25, 2009 | Garden

    1 Answer

    Chicago forge horizontal air compressor will not build

    Here are some simple tests that will help solve your problem. Check for leaks with soapy water on all the joints and the drain valve. With compressor running and it has reached all the pressure it can muster, remove the air filter and place your finger over the intake port, you should feel good suction and the compressor should speed-up if pump is working and pressure is leaking out. If you feel good suction then pressure could be leaking past cylinder/ring if it is oilless. Check upper part of cylinder for scratches or torn vinyl ring. If you do not feel suction, but rather air blowing out of intake then you may have bad reed vales or torn gasket in head. Another simple test is to run compressor for a few minutes and disconnect power then listen for air leaks at the pressure switch unloader valve. If leaking replace the in-tank check valve (brass valve). Follow the discharge airline to the tank, there you will find the checkvalve. Good Luck and email if you have questions.

    May 03, 2009 | Chicago Forge AF4HH 15 - Gal. 4.0 - HP...

    1 Answer

    I need to change fuel filter for 1992 f150 [relay diagram]

    To relieve the pressure, find on the fuel rail on the intake a schroeder valve, looks like a larger version of a tire valve, possibly with a cap. Remove cap, push center pin on valve to relieve pressure. Caution as high pressure fuel will come out, I hold a rag over it while I do it.

    Feb 08, 2009 | 1992 Ford F150 SuperCab

    2 Answers

    Losing pressure somewhere

    Hi, I work in the italian factory of Karcher. In my opinion the problem is caused by the breaking of the collector. This is a black component of plastic where is inserted the detergent suction valve and the safety valve. To replace this component you have to go in a repair center Karcher.

    Nov 24, 2008 | Karcher 1750 psi Electric Pressure Washer

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