Vacuum cleaners actually blow air through the filtration system. Over time particles will block the pores in the filter which doesn't allow enough air to pass through it and pressure will build up behind the filter and has to go 'somewhere'. Either clean the filter or replace it, and be certain to properly reinstall the assembly before turning it on.
HI, it's Jim from Crucial Vacuum!
If your Shark Navigator Lift-Away Vacuum is making a loud noise while it's on then there's definitely a clog somewhere. Here' s a few places you should check prior to plugging in the vacuum and turning it on.
The first place to check would be the brush roll and belt. If you notice visible debris, like strands of hairs, or long carpet fibers this could be catching on the brush roll and causing it not to turn fully. Be sure to clear this debris from the brush roll and manually spin the brush roll a few times after you do so to help unearth and any other clogs. This may be the reason for the noise and its crucial that this part of your vacuum is clog free.
Another part of your vacuum to check would be your hose. Detach the hose and stretch it out as much as you can to see if any debris or clumps of dust are stuck inside. Using a broom handle can help if you see a clog, but it won't come out after you've stretched out the hose.
Another big factor would be a dirty filter in your vacuum. Most manufacturers recommend you change your filter on average every 3-6 months. However, it is recommended to change your filter even earlier depending on usage and allergy care. The cleaner your filters the less debris will get stuck in your vacuum, causing less clogs and overall less odd noises while vacuuming.
You can purchase a wide variety of high quality Shark replacement parts for your Shark vacuum direct from Crucial Vacuum with free shipping and an exclusive 10% coupon for Fixya.com readers, use code: FIXYA10
http://www.crucialvacuum.com/catalogsearch/result/?q=nv355
I hope this was helpful. If you would like further assistance, please feel free to give us a call at 877.750.9239. We have helpful and friendly customer care representatives on the line ready to assist you.
Jim Thompson
Crucial Vacuum Customer Care
http://www.crucialvacuum.com
AS far as I am aware and I have been in the trade for many years, there are limited spares for the Shark range and no schematics or diagrams due to their policy.
If it fails under warranty, they replace it, they don't attempt to repair them because it is not cost effective.
They are all called 'Navigator' :>D
https://www.google.com/search?q=Shark+Navigator
When switch to carpet, the difference is that the brush roller turns. When it is on hard floors setting it doesn't. Remove the base plate, remove the brush and the belt. There is likely something wrapped around the drive spindle or clutch.
It is possible that the issue is with the motor or an electrical component. If you have access to a multimeter, you could try testing the motor and other electrical components to see if they are working properly. If not, then it may be necessary to replace the motor or another component. You may also want to make sure that all of the wiring connections are secure and not damaged in any way.
You can find diagrams of the wires in a Shark Professional Vacuum Handle online. You can search for the specific make and model of your vacuum to find the diagram. Alternatively, you can contact the manufacturer of your vacuum to request a diagram.
