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Installing a carbon bush on a Stannah 420 stair lift requires some technical knowledge and experience, as it involves working with electrical components. If you are not familiar with stair lift maintenance and repair, it's best to contact a professional technician or Stannah service representative to ensure the proper installation and safety of the carbon bush.
However, if you have the necessary skills and knowledge, follow these general steps to fit a carbon brush to a Stannah 420 stair lift:
Safety First: Before starting any work, ensure the stair lift is turned off, and the power supply is disconnected to avoid any electrical accidents.
Access the Motor Compartment: Open the motor compartment of the Stannah 420 stair lift. This is usually located under the seat or at the base of the unit. You may need to remove some screws or panels to access the motor area.
Locate the Carbon Brushes: The carbon brushes are small, rectangular-shaped components made of carbon and graphite, and they make contact with the motor's armature. Look for the existing carbon brushes, which might have worn down or need replacement.
Remove the Old Brushes: Carefully detach the old carbon brushes from their holders. This may require gently pulling them out or undoing some clips or screws that secure them in place. Take note of how the old brushes were positioned so you can properly install the new ones.
Install the New Carbon Brushes: Insert the new carbon brushes into their respective holders and secure them in place as per the manufacturer's instructions. Make sure they are positioned correctly and have good contact with the motor armature.
Reassemble: Once the new carbon brushes are in place, reassemble the motor compartment by putting back any removed panels or covers and tightening any screws that were undone.
Test the Stair Lift: Reconnect the power supply and turn on the stair lift. Test the unit to ensure the new carbon brushes are working correctly and that the stair lift operates smoothly.
Regular Maintenance: Carbon brushes wear down over time, so it's essential to perform regular maintenance and inspections to identify when they need replacement. The frequency of replacement depends on the stair lift's usage and other factors.
Again, if you're unsure about any part of this process or lack experience with stairlift maintenance, it's best to seek professional help to ensure the job is done safely and correctly.
Have you checked the carbon brushes within the motor, chances are they are worn. you will need to remove your motor to get to the 2 carbon brushes.these will be in a plastic casing, held in place by 2 screws. There is just 1 wire going to each brush. When brush is removed, the carbon should be at least 20mm long. If not replace with new
If it has not run for awhile, check the brushes. they might need to be replaced. The plug is usually moulded right on power cord. That might have to be replaced because if there is a problem with a broken or disconnected wire right at plug there is no way to see it. Hope this helps.
You need an AC voltmeter to trace the problem with the switch. It can also be a bad motor brush/spring--these saws are great for killing motor brushes, and there are virtually no replacements available as Remington has ceased saw operations. If it is a bad brush, visit an electrical tool shop to see if they have something that will work from a different brand of tool. Good luck!
when u changed the carbon brushes did u move the little metal pin to free the carbon off it must be able to come out then in with ease if not do this if u did then if the carbon brushes have got too low then it will have more then likely damage your motor m8
The carbon brushes in the motor need to be replaced. Very IMPORTANT....... DO NOT run the Kirby anymore until you get this fixed. If you do, the armature will be in danger of being damaged. (and that part is expensive!) The carbon brushes are reasonably priced, and you can use this online guide to get to them and change them. It's a guide for replacing the power switch, but it will help you change the carbon brushes too. Hope I've helped...
Marci
more than likely your carbon brushes which are situated in your motor locatable by a single wire on each side of your motor going into a plastic casing that holds the carbon if it doesnt have carbon brushes than it will have a module which is about 4in in length and is a circuit board this will need replacing which in some cases is not cheap at all
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