Additel 927 Manual de manutenção e reparação - Página 7

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2.1 Pre-pressurization piston

①

Please refer the "Pump cleaning" part of maintenance section to drain the media. Turn the pre-pressurization handle out to the

middle position.

②

Use a 4 mm socket head wrench to remove the three lock bolts on the bottom of the pump.

And use a 24 mm wrench to unscrew the screw nut, as shown in picture 2.1.1.

2.Screw nut

③

Pull out the pre-pressurization piston from the pump chamber, as shown in picture 2.1.2.

④

Please refer to picture 2.1.2 to exchange the damaged parts of the piston.

3. Pre-pressurization

handle

Picture.2.1.1

5. Pre-pressurization

piston

Picture.2.1.2