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Why does water leak or spray from around the pistons of my Vario when pumping?

April 26, 2017leak pistons pumping spray vario water

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Why does water leak or spray from around the pistons of my Vario when pumping?

1 Answer

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Check the o-rings on the pistons (2 o-rings per piston). Clean o-rings and pistons with a soft cloth. The o-rings should not be brittle or damaged and need to be kept lubricated at all times. Apply additional silicone grease generously, as needed. Replace any o-rings that are damaged or worn, making sure you lubricate the new o-rings before putting them on the pistons. Lubrication improves the sealing effect and helps the filter to draw water. Be careful that the o-rings do not get pinched when you reassemble the filter.