The Dyson DC14 model vacuum cleaner was one of the first Dyson models to be sold in the United States and is no longer manufactured, although replacement parts are sold from the company. The manufacturer says this vacuum cleaner will not lose suction because of Dyson's patented cyclone system. Suction problems with the DC14 are usually a result of a clog, which can break the vacuum seal. Clogs can be removed by the vacuum owner.
Clog in the Hose
Unplug the vacuum and press the coloured release button at the top of the canister to detach the hose from the vacuum. Look in the hose for debris that did not move through the vacuum cleaner properly, and remove any debris. The hose can also be detached at the base of the vacuum, using another release button.
Clog in the Canister
If the canister gets overfilled, the vacuum may not function properly. Make sure to empty debris from the canister as it begins to look full. Debris should spin quickly inside the canister when it is functioning properly. Empty the canister if contents are not moving. Make sure to remove all debris from the canister before reattaching it to the Dyson vacuum body.
Clog in the Brushbar
If the vacuum's brushbar gets debris wrapped around it, the brushbar may not spin properly and cause the vacuum to not suck things up. Lay the vacuum on the ground and using scissors, carefully remove debris from the brushbar. For debris that is tough to remove, the brushbar can be detached from the vacuum by unscrewing the knobs on the outside brushbar casing with a coin.