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Repair Center  How to Replace the Generator Pump on a DeLonghi Magnifica Espresso Machine

Why Read This Article?

Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)

Article Breakdown

Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)

Video

Tools & Materials

Fix Factor: Moderate Duration: Approximately 1 hour Frequency: As necessary Tools Required: Phillip's screwdriver, small screwdriver or pick, hex drivers, scissors or wire cutters, long-nosed pliers, shop vacuum (optional), cable ties

How to Replace the Generator Pump on a DeLonghi Magnifica Espresso Machine

Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)
How to replace the generator pump on a DeLonghi Magnifica Superautomatic Espresso Maker THE FACTS | THE FIX | THE FINISH

Steaming and frothing over a broken espresso machine? It's time to face the fix. Whether you are an impassioned espresso enthusiast or a bona fide barista, eReplacementparts.com provides the parts, procedures and facts you need to fearlessly fix what fails you.

In the late nineteenth century, espresso was created by "pulling" heated water through ground coffee using a series of hand-operated levers. Today, that "pulling" action is accomplished by an electric pump. More specifically; a generator. Unlike their 200-year-old counterparts, however, most electric generators were not built to stand the test of time.

Symptoms of an aging generator may include water loss during brewing, visible leakage, inconsistent cup portioning, or total loss of brew functionality. This article will show you how to remove and replace the generator in a DeLonghi Magnifica Superautomatic espresso machine.   THE FACTS | THE FIX | THE FINISH   REMOVING THE GENERATOR  [top] ! Unplug the machine.

 Unplug the unit   1. Remove the drip tray.

Open the front door of the machine.

 Open the front door

 

Slide the drip tray out of the machine.

 Remove the drip tray   2. Remove the water tank.

Close the front door assembly.

 Close the door

 

Slide the water tank out of the machine.

 Remove the water tank     3. Remove the side panels.

Remove the retaining screws (located on the back of the machine).

 Remove the screw

 

Slide the side panel toward the rear of the machine to disengage it from the housing.

 Remove the side panel

 

Remove the side panel.

 Remove the side panel

 

Repeat to remove the opposite panel.

 Repeat for opposite panel     4. Remove the rear panel from the unit.

Remove the retaining screws.

 Remove the rear panel

 

Remove the rear panel.

 Remove the rear panel     5. Remove the knob.

Use two screwdrivers to evenly pry the knob from the mounting stud.

 Remove the knobRemove the knob     6. Remove the control panel assembly.

Remove the retaining screws.

 Remove the screwsRemove the screws

 

Pull control panel assembly away from the machine.

 Remove the control panel     7. Remove the top panel.

Remove the retaining screws.

 Remove the top

 

Remove the top from the machine.

 Remove the top     8. Remove the wires from the switch terminal.

SPECIFIX: Note the small bundle of wires originating on the front of the machine (near the knob) and passing through a plastic channel on the housing. To make room for the generator to be lifted out of the unit, remove these wires from the channel and push them to the side.

Clear the path

 

Use long-nosed pliers to disconnect the two black wires (originating at the knob on the front of the machine) from the switch terminal on the generator. (The connection point is highlighted in the photo below).

 Remove the switch wiresRemove the switch wires

    9. Remove the generator hardware.

SPECIFIX: The generator is secured by four long screws. These screws attach to nuts on the bottom of the assembly. It is usually not necessary to hold the nuts with a wrench during removal (finger pressure is generally sufficient). However, care should be taken to ensure that the nuts do not fall into the machine once the screws have been removed.

 Hold the bottoms

 

Remove the three accessible screws and nuts from the generator assembly.

 Remove the screws

 

Open the front door of the espresso machine to access the final nut and remove the screw.

 Remove the screws     10. Remove the wires from the control board.

SPECIFIX: There are three wiring harnesses that must be removed from the control board. The new generator includes new harnesses, but care should still be taken when removing the connectors from the control board to avoid damaging the terminals.

 Wiring Harness

 

Cut the cable tie at the top (generator-side) of the wire bundle.

 Cut the cable tie

 

Notice that the lower portion of the wire bundle is secured by one of the wire sets (which wraps around the bundle).

 Wire is wrapped

 

Disconnect the (wrapped) wire from the control board.

 Remove the wire

 

Unwrap the wire from the bundle.

 Unwrap the wire

 

To remove the smaller pair of (white) wires, use long-nosed pliers to gently pull the connector away from the control board terminal.

 Remove the wires

 

Trace each of the heavy gauge (black or brown) switch wires from the generator to locate their respective attachment points and disconnect them from the control board. (You may have to remove an additional cable tie at the lower portion of the wire bundle.) Note that these wires utilize different connectors to attach to the control board, which will ensure that they are reattached correctly in later steps.

 Trace the wires

 

Carefully remove the wires from the remaining wire bundle.

 Remove wires from bundle     11. Remove the upper tube from the generator.

Cut the cable tie connecting the tube bundle.

 Cut the cable tie

 

Use a screwdriver to pry the clear protector sleeve loose and slide the sleeve off of the connection.

 Pry the tube

 

Use a small screwdriver to remove the metal retaining spring.

 Remove the spring

 

Pull gently to disconnect the tube from the generator.

 Remove the top hose

 

Note: This fitting requires an O-ring. If the O-ring is not visible on the fitting (when removed), you will need to remove it from the housing with a small pick.

 Remove the o-ring     12. Partially remove the generator assembly.

Use a screwdriver to gently pry the generator away from the plastic housing. Be careful not to damage any of the components.

 Remove the generator

 

Gently push the remaining tubes and wires aside while slowly lifting the generator assembly out of the housing.

 Remove the generator

 

Pull the black rubber tube to remove it from the side of the generator.

 Remove the black tube     13. Remove the bottom tube from the generator.

Use a small screwdriver to remove the retaining spring from the tube inlet.

 Remove the spring

 

Pull gently to remove the tube from the generator.

 Remove the tube

 

Use a pick to retrieve the O-ring from the connector housing (if it did not come out with the tube).

 Remove the O-ring     14. Remove the generator.

With all necessary tubes and wires disconnected, remove the generator assembly from the machine.

 Remove the generator

 

Use a shop vacuum to remove debris or corrosion that may have accumulated on the housing.

 Vacuum the housing     INSTALLING THE NEW GENERATOR  [top] 15. Install the bottom tube.

Replace the O-ring and insert the small tube into the bottom of the generator.

 Replace the tube

 

Use a small screwdriver to firmly seat the brass fitting into the tube inlet.

 Replace the tube

 

Secure the tube with the metal retaining spring.

 Replace the spring     16. Transfer the generator screws.

Transfer the four screws from the old generator assembly to the new one.

 Transfer the screws

 

The new generator assembly includes a built-in mounting bracket, which replaces the original bracket. As such, you may discard the mounting bracket removed from the original assembly.

 Discard the bracket     17. Install the generator bushing feet.

SPECIFIX: The generator rests upon four small bush feet, which reside in depressions in the housing. These bush feet may already be in their correct positions. More likely; the feet moved or fell into the unit during removal of the original generator assembly.

 Notice the bush feet

 

As necessary, install the two longer feet into the holes toward the front of the machine.

 Install the long feet

 

Install the two shorter feet over the screw-hole openings toward the rear of the housing.

 Install the short feet     18. Install the generator in the housing.

Partially install the generator assembly into the housing, ensuring that no tubes or wires are pinched or obstructed during installation.

 Install the generator

 

Reconnect the black rubber tube to the side of the generator.

 Reconnect the black tube

 

Align the plastic tabs on the housing with the holes on the generator assembly brackets.

 Align tabs     19. Install the top tube.

Replace the O-ring on the tube.

 Replace the O-ring

 

Reinstall the top tube into the generator assembly.

 Install the tubbe

 

Use a small screwdriver to firmly seat the brass fitting into the tube inlet.

 Seat the connector

 

Secure the tube with the metal clip.

 Reinstall retaining spring     20. Install the mounting nuts.

FIX TRIX: Apply a small amount of grease (such as Vaseline) to the washers and nuts to help them stick together and remain in position during assembly.

 Grease the washers

 

Install the four nuts to the bottom of the generator assembly and secure the screws (from the top).

 Install the nuts     REASSEMBLING THE UNIT  [top] 21. Reconnect the wires to the control board.

Route the wires from the generator assembly through the channels in the housing and along the path of the existing wire bundle (working toward the control board).

 Route the wires

 

Use needle-nosed pliers to reattach the wire connections to the terminals on the control board.

 Connect the wires

 

Wrap the final wire around the entire bundle once or twice before attaching it to the control board.

 Wrap the wire     22. Reconnect the primary wires to the generator.

Install the two primary wires to the connection terminals on the generator.

 Connect the wires

 

Route the two primary wires through the channels in the top of the plastic housing and along the path of the existing wire bundle.

 Route the wires     23. Secure the wire bundles.

Use new cable ties (available at home improvement stores) to secure the upper and lower sections of the wire bundles.

 Use cable ties     24. Reinstall the protective tubing sleeve.

Slide the clear plastic sleeve over the fitting on the upper tube.

 Replace the sleeve

 

Secure the remaining tubes to the fitting with a cable tie.

 Tie the tubes

 

Clip and remove all exposed ends of the cable ties.

 Cut the ends     25. Reinstall the top of the unit.

Reinstall the top panel.

 Reinstall the top

 

Secure the panel with the screws.

 Secure the top panel     26. Reinstall the front control panel.

Install the front control panel on the unit, ensuring alignment of the mounting tabs and knob cutouts.

 Install control panel

 

Secure the front control panel with the screws.

 Secure control panel     27. Reinstall the knob.

Align the grooves on the knob with the tabs on the mounting stud.

 Align the knob

 

Press firmly to secure the knob to the mounting stud.

 Install the knob     28. Reinstall the rear cover.

Align the upper tab on the rear cover with the recess in the top panel.

 Install the rear panel

 

Press and snap the rear panel into position.

 Install the rear panel

 

Secure the rear cover with the screws.

 Secure the rear panel     29. Reinstall the right panel.

Insert the top edge of the right panel into the top panel.

 Install the side panel

 

Snap the lower portion of the panel into position against the housing.

 Snap the side panel into place

 

Slide the entire panel toward the front of the machine, ensuring that the mounting tabs align with the housing.

 Install the side panel

 

Secure the right panel with the screws.

 Secure the side panel     30. Reinstall the left panel.

Insert the top edge of the left panel into the top panel.

 Install the left panel

 

Slide the entire panel toward the front of the machine, ensuring that the mounting tabs align with the housing.

 Install the left panel

 

Secure the left side panel with the screws.

 Secure the left panel     31. Reinstall the water tank.

Slide the water tank securely into position.

 Install the tank     32. Reinstall the drip tray.

Open the front door assembly of the machine.

 Open the front door

 

Slide the drip tray securely into position.

 Insert the drip tray

 

Close the front door assembly.

 Close the door   THE FACTS | THE FIX | THE FINISH Cappuccino. Americano. Espresso. Macchiato: the possibilities are as priceless as the machines that prepare them. But you don't have to empty your pockets to keep your cup full. As you just learned, repairing your own gourmet gadgets and modern machines is easier than you think, especially when you follow our step-by-step guides. Not only did you restore balance to your morning routine; you awakened your potential for facing and fixing whatever the future brews up for you. Find your next fix here.   [top]

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