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| Thread ID: 147683 | 2019-03-05 07:05:00 | Schredder Issue | Driftwood (5551) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1458752 | 2019-03-06 06:44:00 | Any garden appliance technicians out there. Got a problem with a garden shredder, Ryobi ESR2400A. SWMBO was using it the other day when it malfunctioned. It was refusing to re-start. Soft start was working but it wouldn’t spin up. She had already opened it up to see if it was clogged. I tried to turn the cutter but it was very stiff. I figured it was probably knackered & could already see the dollar signs. Thought I may as well pull it apart just make sure. Bit of a mission getting the motor out & it indeed was almost solid. Shot some CRC in each end & it freed up nicely. Pretty simple motor really, no brushes to worry about. A crisis averted maybe. So I put it all back together & hit the go button. Clunk, still the same. If you give the cutter a flick before hitting the button it spins up & runs nicely. So I’m assuming something in the soft start is not doing its job. It has quite a large sealed switch unit with a cut-out reset & also a large cylindrical shaped device, I took to be a capacitor. It’s a bit dangerous expecting SWMBO to use it like that, so it’s either throw it out & buy a new one or fix it. Any ideas?? This is a classic example of starting capacitor failure. Note the capacity, usually 400volts @ 8 to 35 micro farad. Most electric motor shops stock them, they can also test the existing one for you. Cost about $45. Most electric motors in shredders have a magnetic brake to stop the motor spinning immediately when the power is cut. It should be difficult to turn. Using CRC enables the brake to slip, temporally. |
mzee (3324) | ||
| 1458753 | 2019-03-06 07:15:00 | You could be on to something there. The trick would be finding a replacement part. |
Driftwood (5551) | ||
| 1458754 | 2019-03-06 08:03:00 | I would think a 20 uF capacitor would be fairly generic. | SurferJoe46 (51) | ||
| 1458755 | 2019-03-06 08:30:00 | It's quite a big thing, like a small can of baked beans with a couple of wires sticking out of it. | Driftwood (5551) | ||
| 1458756 | 2019-03-06 08:41:00 | Found a reference to it. spares.bigwarehouse.com.au www.ebay.com.au h |
Driftwood (5551) | ||
| 1458757 | 2019-03-06 19:30:00 | This is a classic example of starting capacitor failure. Note the capacity, usually 400volts @ 8 to 35 micro farad. Most electric motor shops stock them, they can also test the existing one for you. Cost about $45. Most electric motors in shredders have a magnetic brake to stop the motor spinning immediately when the power is cut. It should be difficult to turn. Using CRC enables the brake to slip, temporally. I partly agree but in my years of experience it would most likely be the start winding burnt out. As the motor runs up to speed a centrifugal switch or the ssoft start device will disconnect the start winding. if this does not happen the start winding stays energised & overheats & burns out..T start winnding helps the motor get under way & determines the direction the motor turns, it is not meant to stay enegised. the fact that it will run when you torn the shaft confirms this to me. the motor will run up to speed in wfatever direction tou hand turn it. Agaion in my experience, thr run winding goes into the stator slots first & the start winnding goes on top. If you are very lucky & a good rewinder may be able io pivk the damaged winndinng off & replace it. Look also for a centrifuugal switch not operating, a capacitor open circuited(as suggested) of a failed start unit. PJ |
Poppa John (284) | ||
| 1458758 | 2019-03-06 21:40:00 | Thanks PJ. Sounds like it could be one or the other. Either way it's probably not worth fixing. |
Driftwood (5551) | ||
| 1458759 | 2019-03-07 03:20:00 | Thanks PJ . Sounds like it could be one or the other. Either way it's probably not worth fixing. pity you are so far away. There are 3 things to check. PJ |
Poppa John (284) | ||
| 1458760 | 2019-03-11 08:23:00 | I partly agree but in my years of experience it would most likely be the start winding burnt out. As the motor runs up to speed a centrifugal switch or the ssoft start device will disconnect the start winding. if this does not happen the start winding stays energised & overheats & burns out..T start winnding helps the motor get under way & determines the direction the motor turns, it is not meant to stay enegised. the fact that it will run when you torn the shaft confirms this to me. the motor will run up to speed in wfatever direction tou hand turn it. Agaion in my experience, thr run winding goes into the stator slots first & the start winnding goes on top. If you are very lucky & a good rewinder may be able io pivk the damaged winndinng off & replace it. Look also for a centrifuugal switch not operating, a capacitor open circuited(as suggested) of a failed start unit. PJ These days most of the appliance electric motors are induction motors, and do not have starter switch, but need a capacitor (to put it simply) to give it a kick when starting. These motors are simpler than the old ones, and cheaper to manufacture. The disadvantage is that they have very little torque at starting speed, and are used mainly where they run at a constant speed. They are available on TradMe for about $40. |
mzee (3324) | ||
| 1458761 | 2019-03-11 14:36:00 | Is the volume of waste to be shredded small enough, for it to be mulched into the lawn and use it to feed the grass and get rid of it at the same time? I'd look into that since I use triple rotary blade deck to do that with mine . You don't need a special shredder unless one has shoots, tree clippings, small limbs and small diameter branches to dispatch . Depends on the machine, but I just grind up the smaller stuff --- shoots, clippings and dead flower heads, bad fruit and some vegetal kitchen waste, etc . , that way . If the organic stuff gets bigger, I have a 22HP chipper unit that can merrily eat it's way through limbs up to human thigh sized and arm sized cuttings never seem to register on the throttle to maintain RPM . It mounts to my 1956 Case HiBoy tractor, off the rear PTO . The side PTO is two-speed and runs too slow and too fast for the chipper . The Case is 22 . 5 HP at the PTO@1300 RPM, and the chipper has a 200 lb flywheel with hammer mill and fixed cutters . I'm pretty sure that you will have no need for something that big . . . but having a nice, working older tractor would solve a lot of problems where one can use a portable, add-on three point attachment for those oddball, seasonal jobs . I'm not a big fan of appliances that run on electricity until they get to 50 horsepower or more . Just a thought . |
SurferJoe46 (51) | ||
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