O-ring black. 7xxx mixer module. New model

O-ring black. 7xxx mixer module. New model The frequent failures of the FB7100 are: Water volume fluctuates on coffee and chocolate: the pump is defective. Do not whip milk or chocolate: whip motor and twist defective Leak at the bottom of the dispenser: water tank defective, we change it about every 4 to 5 years. Does not take water in: there is water in the inlet valve. Brewing error: Delta brewers should be replaced. Very wet coffee grounds in the bucket: brewing cylinder must be cleaned. Hot faults: change the heating element (this may be that the lime filter makes acid water)

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