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Author Topic: Hi Dyson DC39 Animal poor suction  (Read 1295 times)

Offline Basil

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Hi Dyson DC39 Animal poor suction
« on: August 08, 2020, 08:32:24 PM »
Hi

I have a DC39 Animal I forget how old (the last ones before the EU power regulations changed) it's had me scratching my head, it has poor suction audibly hear it sounds gutless, the head seems to only spin at reduced speed, but it seems to chew through pre-filters (genuine and pattern filters) if the pre filter is brushed off before doing a hoover it'll be sort of okay but then the next time it's picked up to be used the suction seems to be reduced again.

When it's powered on you can see the arm really suck down onto the pre-filter and when it does give full suction it's perfectly capable of lifting the carpet and spinning like normal.

I've checked for blockages, made sure the trigger head brush isn't wrapped in fluff, I've tried genuine pre-filters, pattern ones. I'm hesitant to buy new head, or cyclone and filters really aren't lasting. My only thought was perhaps the HEPA filter is really clogged up.   

I've looked at others with similar symptoms but they never seem to solve the problem.

Any obvious thoughts or suggests gratefully received.

Offline MVacs

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Re: Hi Dyson DC39 Animal poor suction
« Reply #1 on: August 10, 2020, 01:52:16 PM »
I'm sure you've checked it but the flexible pipe after the main hose where it goes into the machine is the cause of most performance issues on those. They partially block up.

Offline dysondestijl

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Re: Hi Dyson DC39 Animal poor suction
« Reply #2 on: August 12, 2020, 11:35:40 PM »
If the filter is soiling quickly, it sounds like there could be a misplaced seal somewhere that is allowing more dirt than usual to pass through the cyclones? Used to happen more so on the older Dysons if the FDC seal became damaged or mislaid. On the DC39 and similar it is located on the bin flap, visible when you open the bin to empty. I have seen examples where this seal has become unstuck and has fallen out whilst being emptied. Check yours against the diagram and see if this FDC seal is still present? (Not my image- found on Google!)

Offline Basil

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Re: Hi Dyson DC39 Animal poor suction
« Reply #3 on: August 13, 2020, 07:31:59 PM »
I'm sure you've checked it but the flexible pipe after the main hose where it goes into the machine is the cause of most performance issues on those. They partially block up.

Sorry for delayed reply, things have been hectic, I did check that pipe and it was fine but no harm in rechecking perhaps I've missed a split or hard compacted dust.

If the filter is soiling quickly, it sounds like there could be a misplaced seal somewhere that is allowing more dirt than usual to pass through the cyclones? Used to happen more so on the older Dysons if the FDC seal became damaged or mislaid. On the DC39 and similar it is located on the bin flap, visible when you open the bin to empty. I have seen examples where this seal has become unstuck and has fallen out whilst being emptied. Check yours against the diagram and see if this FDC seal is still present? (Not my image- found on Google!) (Attachment Link)

Thanks for that I will have a look. 

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