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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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I have a small Simoniz Pressure washer 1300psi (1700 psi with special
nozzle). I used it one this summer and it worked fine. The second time I used it, it started loosing pressure after 8seconds or so. So if I let go of the trigger, and wait 15 seconds or so, then I get pressure again for 8sec. But if I continue using it after it looses pressure it lows the breakers in my house (because it's drawing too much power). Any idea why that happens and how to fix it? The unit is about 4 years old and used twice each summer. Thanks. |
#2
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lbbss wrote:
I have a small Simoniz Pressure washer 1300psi (1700 psi with special nozzle). I used it one this summer and it worked fine. The second time I used it, it started loosing pressure after 8seconds or so. So if I let go of the trigger, and wait 15 seconds or so, then I get pressure again for 8sec. But if I continue using it after it looses pressure it lows the breakers in my house (because it's drawing too much power). Any idea why that happens and how to fix it? The unit is about 4 years old and used twice each summer. Thanks. The first thing I'd try is some lubrication. -- The e-mail address in our reply-to line is reversed in an attempt to minimize spam. Our true address is of the form . |
#3
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lubricate which parts? Do I need to unscrew the main body casing?
thanks |
#4
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lbbss wrote:
I have a small Simoniz Pressure washer 1300psi (1700 psi with special nozzle). I used it one this summer and it worked fine. The second time I used it, it started loosing pressure after 8seconds or so. So if I let go of the trigger, and wait 15 seconds or so, then I get pressure again for 8sec. But if I continue using it after it looses pressure it lows the breakers in my house (because it's drawing too much power). Any idea why that happens and how to fix it? The unit is about 4 years old and used twice each summer. Thanks. Typical problem with cheap universal motors is that the brush holder is made of plastic. So, you overload it, it runs hot. After a while the plastic brush holder melts where it contacts the metal. It's still running fine, cause it's hot. But when you let off the trigger, the plastic that's oozed onto the brush hardens. Now the brush is frozen and there's lots of arcing and sparking on the commutator. If you let this go on, it really tears up the commutator and the brush. If you catch it early, you can free the brush and shine up the commutator. The fix is to disassemble the motor and free the brushes. Technique depends somewhat on the construction. On my chainsaw, I use a big soldering iron to heat the metal just enough to free the brush. Then take half an hour with a tiny rat-tail file and xacto knife to get all the plastic out. Works fine until I forget and try to cut a limb too big and it starts all over again. Same problem with the electric lawn edger. mike -- Return address is VALID but some sites block emails with links. Delete this sig when replying. .. Wanted, PCMCIA SCSI Card for HP m820 CDRW. FS 500MHz Tek DSOscilloscope TDS540 Make Offer Wanted 12" LCD for Compaq Armada 7770MT. Bunch of stuff For Sale and Wanted at the link below. MAKE THE OBVIOUS CHANGES TO THE LINK htremovethistp://www.geocities.com/SiliconValley/Monitor/4710/ |
#5
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Make sure the water inlet is not restricted by blocked filter sometimes
fitted in water inlet coupling , or hose is not being kinked . When the volume of water going in is restricted the outlet high pressure cannot be maintained, think of 'Pressure times volume equals a constant ' "lbbss" wrote in message ... I have a small Simoniz Pressure washer 1300psi (1700 psi with special nozzle). I used it one this summer and it worked fine. The second time I used it, it started loosing pressure after 8seconds or so. So if I let go of the trigger, and wait 15 seconds or so, then I get pressure again for 8sec. But if I continue using it after it looses pressure it lows the breakers in my house (because it's drawing too much power). Any idea why that happens and how to fix it? The unit is about 4 years old and used twice each summer. Thanks. |
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