Introduction
The installation of a pressure regulating valve makes the machine much quieter.
Note: in the guide the top cover of the coffee maker was also removed. If you have no other repairs, this is not absolutely necessary and you can skip the corresponding steps.
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The rear panel and side panels are attached with six phillips screws #2. Screw them out.
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Slide the right side panel about 2 cm to the back.
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Then solve it.
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The left side is a bit stuck. Place a plastic opening tool in the gap between the front and left side panel above the opening for the water tank. Lift the gap slightly larger.
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Then place the tool in the gap between the front and left side panel under the opening for the water tank. Increase the gap and push the side part about 2 cm to the rear.
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Lift out the left side piece.
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The front panel is secured with four PH2 Phillips screws, two left and one right each. Turn it out.
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Use a plastic opening tool to lever off the steam tap.
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Carefully pull the front panel about 1 cm forward so that there is a gap between the top cover and the front panel,
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Two Phillips screws PH2 hold the lid at the back. Turn it out.
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Lift the lid upwards.
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The old safety valve - seen in the first photo already expanded - is screwed on the pump. It is replaced by a combination of safety valve and pressure balance valve. The diaphragm valve dampens the shocks of the pump, making the flow of water quieter and quieter.
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Remove the two hoses from the valve. For the thicker hose you have to squeeze the hose clamp with pliers, push it away and you can pull off the hose.
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With the thinner pressure hose above you have to pull out first a clamp, then the hose comes out easily. There may be a gasket on the hose or it may stick in the valve.
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Make sure that there is a sealing ring above the thread on the valves, marked yellow in the photo.
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First screw the safety valve into the pump tube. Do not turn too hard.
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then screw the pressure regulating valve into the safety valve.
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Place the two outputs on top of each other.
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Put the two hoses back on. Also pay attention here to the thinner tube on the sealing ring, if possible, a new one.
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Repeat the steps in order to reassemble your device.
Repeat the steps in order to reassemble your device.
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