Miele PG 8504 Operating Instructions Manual page 99

Use a pointed object to push particles into the spray arm.
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Rinse the spray arm thoroughly under running water.
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 Do not allow any magnetic objects or wash items to stick to the
magnets on the spray arms.
Remove all metallic objects from the magnets.
Check the spray arm bearings for visible signs of wear.
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Visible wear on the bearings can adversely affect the long-term
functioning of the spray arms.
In this case, contact Miele Service.
Replace the spray arms after cleaning.
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Make sure the spray arms can rotate freely after they have been
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fitted.
The spray arms and baskets each have a number e.g. 03, which is
also embossed on the water supply pipes near the bayonet fittings.
When refitting, ensure that the numbers on the spray arms
correspond with the numbers on the water supply pipes.
Maintenance
99