Hi there,
When you lower your DC17's handle into the vacuuming position, a second motor which powers the brushbar will switch on, which will make the machine sound a little louder than when it's standing upright.
However, if you're concerned that the noise the cleaner is making is unusually loud, I'd encourage you to get in touch with us directly - we'll be able to run through some troubleshooting checks over the phone to help resolve this.
You can reach us on 1-866-693-9766 - or if you email your contact details to
[email protected], someone will be in touch as soon as possible to provide assistance.
Best wishes,
Jack
Dyson Online Customer Support
http://www.dyson.com
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