At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
Arcing Commutator-Brushes The Vacuum came to a slow intermittent, burned smell. I took it apart found carbon dust all over the inside. Took the brushes out, ends were broken-splintered. I replaced the brushes, but I get Max arcing now. The Commutator is scored and darkend in a few sections. My question is:
My only hope is to polish the commutator down to a smooth shiny finish hoping there is enough copper depth ?.
Thanks for the help..
You already answered you own question Smooth down the commutator so that the new brushes seat themselves in. You are correct.You already answered you own question Smooth down the commutator so that the new brushes seat themselves in. You are correct.
You can't post conmments that contain an email address.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Are the brushes worn down too far? As they wear the springs tension gets weaker. The brushes can also get stuck inside the channel they slide in. Could also be a buildup of dust etc inside and around the internal fan or commutator, etc.
I had the same problem with my DC15. With the brushes going it smelled like burning hair (bad). I had cleaned the brushes many times and it didn't seem to help. I even took it into a Dyson authorized repair shop and they couldn't find anything wrong with it. As a last resort I called Dyson 866-693-9766 1-866-My-Dyson. I was on hold for about 15 minutes before getting a live person. He had my problem diagnosed in literally 1 minute. I had hair wrapped around the spindle, inside the brush/roller mechanism. He walked me through taking apart the brush mechanism (super simple only using a quarter). There was a TON of hair crammed around the spindles and inside the brushes. All wrapped very tightly. I hung up with him to do the cleaning. It took some time and I had to use tweezers to get inside the rollers/brushes. But I got it all, put it back together (which was really easy) and tested it out. No burning hair smell at all. FIXED!
The 6865 has a high rpm AMTEK Lamb motor, Brushes will seldom solve the problem at this stage. Once the sparking and burning starts the conectiion between the brush and commutator is arcing and burning. If the sparks are blue, save your time. A good service tech will run in brushes with a seating stone and a low voltage setup to allow new brushes to seat, but this is generally best accomplished on heavy duty , lower rpm motors. IF YOUR ARMATURE IS SCRATCHY LOOKING OR WORN LIKE AN APPLE CORE,OR THE SEGMENTS ARE NOT PARALLEL IN THE SPACING YOU WILL NEED A NEW MOTOR.
it sounds like the motor overload is cutting out. it should automatically reset in time.
try removing the motor from the vacuum.
jump the motor. (power directly to the motor leads) be careful doing this! because once you plug it the motor will jump...keep your fingers from moving parts.
With the motor running, you will want to inspect the commutator -(where the carbon brushes push against)
if a blue spark is large and wrapping around the commutator then you will need to replace the brushes to begin with...in worse cases the armatures commutator would have to be cleaned with emery paper.... or armature should be replace. i think vacuum motors sell as a assembly...depending on what type of vacuum you have it might be better just buying a new one.
Hi! Highly unlikely that you need a new motor. Highly likely that you need new carbon brushes. The smell is caused by excessive sparking between the worn brushes and the copper commutator segments. Most carbon brushes (and from memory I suspect this includes Henry's) have a copper wire buried in their last few millimeters, and you really need to change them before that becomes exposed. The longer you run it like this, the more likely you are to damage the commutator, so change them sooner rather than later. When you change the brushes, you can smooth off the commutator with very fine abrasive paper (the objective is to smooth it, not scratch it!), and then blow all the dust away (or **** it away if you have another vac, of course).
Incidentally, you don't say if you are using a paper bag in your Henry. Some people, because the top-hat filter is so good, try to manage without a bag. This is false economy! You should always use a bag.
I hope this helps! I value feedback, so please remember to rate this response.
This could be a motor problem. There is always a slight blue arcing that occurs when an electrical motor runs and can be visible through the exhaust vent, but any excessive arcing indicates a problem. If the carbon brushes are sticking, this will cause excessive arcing and can be corrected by an experience service person, but if there is any electrical failure, the motor would have to be replaced. There are no parts available for these motors and the expense of replacing an armature (the likely culprit) would be more than the motor. This could also be as simple as a worn belt, but usually, belts will not produce the smell your describing. When a motor is burning out, it will produce an acrid odor that will linger for a long time.
You already answered you own question Smooth down the commutator so that the new brushes seat themselves in. You are correct.
×