Commercial Dishwashers

[stevebunyan]

I have been to a Lamber Newscan DSP44 with a number of faults all of which I have repaired by this one. The bottom 2 spray arms won’t rotate during the wash. The pump is delivering water to the top arms ok. I have replaced the boss that the arms sit on with no change.
Any Ideas?

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[spimps]

Re: Commercial Dishwashers

Impellor on pump could be missing blades,take circulation pump off check impellor and also have a look up the connected pipes,very often broken crockery,spoons will be in there,must be some sort of blockage.
Filter in base/sump needs to be checked,make sure it is clean,new landlords don’t usually have a clue about the daily maintenance required on these machines.

[stevebunyan]

Commercial Dishwashers

Thanks for that, Ill check.
I have noticed that when it fills from empty the top arm of the two spins with filling water pressure? Does that mean any thing or is that normal?

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[spimps]

Re: Commercial Dishwashers

Always fills through rinse jets,it’s normal.
Check jets are clear,they unscrew.
pm me if you need anymore help.

[stevebunyan]

Commercial Dishwashers

Jets was my first thought so cleaned them all but made no difference. Should they point up or in different direction?

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[spimps]

Re: Commercial Dishwashers

They should be at 7 minutes or so from the perpendiular as the water jet is what propels the arm to turn.

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