Diplomat HJA 8640 Top spray arm not rotating or spraying

[BerkshireBugsy]

The above unit was bought with a Howdens Kitchen in 2007. It has proved reliable but is seems that in the last few weeks the top arm has ceased to rotate and spray. The lower arm does rorate but the pressure of the jets seems to be lower than I expect (although this is quite difficult to judge from opening the door quickly!)

I have taken the top tray out and flushed the spray arms and there do not seem to be any blockages. The unit seems to fill and empty water as normal and no unusual noises are coming from it.

ANy suggestions on this? I have been googling for a service manual but can’t find one.

Any replies appreciated

Dave

[leedata1979]

Re: Diplomat HJA 8640 Top spray arm not rotating or spraying

check that the rubber washer on the spray arm is ok and also check the nut at the back of the top spray arm as there is a rubber seal the the draw should lock in to. the presser could be low due to water leaking from these points

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