Saeco Royal Thermoblock Replacement Repair Guide

Difficulty

Moderate

Steps

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Sections

Saeco Royal Opening Procedure
5 steps
Remove thermoblock
12 steps
Thermoblock replacement
2 steps

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Introduction

What you need

Step 1

              Preparing

Unplug!
Remove all attachments like water tank, brewing unit etc.
The pictures show a Royal Cappucino One Touch HD8930, but the opening procedure is similar to all models.

Unplug!

Remove all attachments like water tank, brewing unit etc.

The pictures show a Royal Cappucino One Touch HD8930, but the opening procedure is similar to all models.

1024

Step 2

Top

The coffeebean supply is fixed with two screws. Unscrew them and lift it off.
There is a black rubber lid under the bean hopper that you can easily lift off, leaving a large opening.
The adjuster of the grinder has to be solved. Mark the position or just take a picture. This type is fixed with a screw, others are only sticked together.

The coffeebean supply is fixed with two screws. Unscrew them and lift it off.

There is a black rubber lid under the bean hopper that you can easily lift off, leaving a large opening.

The adjuster of the grinder has to be solved. Mark the position or just take a picture. This type is fixed with a screw, others are only sticked together.

Step 3

              Rear side

There are two screws to be turned out.

There are two screws to be turned out.

Step 4

              Front

The screws are situated on the underneath of the cover. This type is held by four screws.

The screws are situated on the underneath of the cover. This type is held by four screws.

Step 5

              Lift cover off

Now the cover can be raised: first grip on left and right rear side and lift about 10 cm (4 in). Sometimes the cover jams a little bit.
Solve the hoses which lead to the water tank. Perhaps you have to pull out some contacts, (e.g. the yellow-green protection lead), don´t forget to put them on again later.
The cover can be drawn aslant towards the front, sliding it over the hot water pipe.
Most repairs can be done with the cover being laid up partially , it must not be completely removed.

Now the cover can be raised: first grip on left and right rear side and lift about 10 cm (4 in). Sometimes the cover jams a little bit.

Solve the hoses which lead to the water tank. Perhaps you have to pull out some contacts, (e.g. the yellow-green protection lead), don´t forget to put them on again later.

The cover can be drawn aslant towards the front, sliding it over the hot water pipe.

Most repairs can be done with the cover being laid up partially , it must not be completely removed.

Step 6

              Remove thermoblock

This is what the removed thermoblock looks like. This one was 14 years old and leaking in various places.

This is what the removed thermoblock looks like. This one was 14 years old and leaking in various places.

Step 7

A look into the open device. The thermoblock is hidden under a pile of cables and tubes.

A look into the open device. The thermoblock is hidden under a pile of cables and tubes.

Step 8

It’s safer to number the cable connectors on the electronics. You probably just need to disconnect the slightly hidden # 14 connector on the two green cables at the very bottom and # 7 on the blue cable on the top.

It’s safer to number the cable connectors on the electronics. You probably just need to disconnect the slightly hidden # 14 connector on the two green cables at the very bottom and # 7 on the blue cable on the top.

Step 9

The thermoblock is attached to the wall behind the brew group with only two Phillips screws.
Remove the two Phillips screws circled in red.

The thermoblock is attached to the wall behind the brew group with only two Phillips screws.

Remove the two Phillips screws circled in red.

Step 10

Take out the thermoblock and place it on the machine.
Hold on! The thermoblock is still connected to the machine by many cables and hoses. Don’t attempt to completely remove it just yet!

Take out the thermoblock and place it on the machine.

Hold on! The thermoblock is still connected to the machine by many cables and hoses. Don’t attempt to completely remove it just yet!

Step 11

Pull the clamp on the hose to the steam valve off.
Pull the hose circled in orange out.
There are two seals at the end of the hose that stick to the hose. Exchange them during re-assembly.

Pull the clamp on the hose to the steam valve off.

Pull the hose circled in orange out.

There are two seals at the end of the hose that stick to the hose. Exchange them during re-assembly.

Step 12

Remove the metal holder of the thermal fuse.
My thermal fuse holder is heavily rusted, this may or may not be the case for you.

Remove the metal holder of the thermal fuse.

My thermal fuse holder is heavily rusted, this may or may not be the case for you.

Step 13

Pull first the clamp, and then the second pressure hose out of the thermoblock.
There are two seals at the end of the hose. They stay stuck either at the end of the hose or afterwards, so don’t try to remove them. Exchange them during re-assembly.

Pull first the clamp, and then the second pressure hose out of the thermoblock.

There are two seals at the end of the hose. They stay stuck either at the end of the hose or afterwards, so don’t try to remove them. Exchange them during re-assembly.

Step 14

Disconnect the connector with the two gray cables from the thermal switch.

Disconnect the connector with the two gray cables from the thermal switch.

Step 15

The blue cable from the thermoblock leads to the connector on the electronics, which is marked with 7 here. This particular plug stuck a lot, so force was required to pull it out.

The blue cable from the thermoblock leads to the connector on the electronics, which is marked with 7 here. This particular plug stuck a lot, so force was required to pull it out.

Step 16

The Allen screw, which holds the holder of the two thermocouples, was not easy to open…
This can also be a Phillips screw. It may vary which appears for you.
Therefore, the plug on the electronics with the two green cables was pulled out. The plug has the mark 14 and is at the very bottom of the electronics.
Disconnect the plug with the yellow-green grounding wire from the support valve.

The Allen screw, which holds the holder of the two thermocouples, was not easy to open…

This can also be a Phillips screw. It may vary which appears for you.

Therefore, the plug on the electronics with the two green cables was pulled out. The plug has the mark 14 and is at the very bottom of the electronics.

Disconnect the plug with the yellow-green grounding wire from the support valve.

Step 17

Thread the green and blue cables out.
The thermoblock is free. Lift it out of the machine.
To replace the thermoblock, the attached components must be removed from the old block and transferred to the new part.

Thread the green and blue cables out.

The thermoblock is free. Lift it out of the machine.

To replace the thermoblock, the attached components must be removed from the old block and transferred to the new part.

Step 18

              Thermoblock replacement

Use an allen wrench to remove the screw holding the thermal sensor bracket.
This screw also may have a Phillips head.
The screw may be stuck by corrossion. Secure the thermoblock in a vice while working.
Lift off the thermal sensor bracket.
Remove both thermal sensors from the thermoblock. Don`t forget to apply thermal paste on reassembly.
Pull the connector of the blue wire and remove the thermo fuse cable.

Use an allen wrench to remove the screw holding the thermal sensor bracket.

This screw also may have a Phillips head.

The screw may be stuck by corrossion. Secure the thermoblock in a vice while working.

Lift off the thermal sensor bracket.

Remove both thermal sensors from the thermoblock. Don`t forget to apply thermal paste on reassembly.

Pull the connector of the blue wire and remove the thermo fuse cable.

Step 19

Remove the four Phillips screws holding the support valve in place.
Lift the support valve out and set it aside. Pay attention to the connection of the grounding cable so it does not get caught.
The support valve is sealed with an O-ring in the thermoblock. Replace the seal if necescery. Replace the two seals on the inlet port of the support valve if necescery, too. Pay attention to the sensitive sliding piece, check to see if it is damaged before re-assembly.

Remove the four Phillips screws holding the support valve in place.

Lift the support valve out and set it aside. Pay attention to the connection of the grounding cable so it does not get caught.

The support valve is sealed with an O-ring in the thermoblock. Replace the seal if necescery. Replace the two seals on the inlet port of the support valve if necescery, too. Pay attention to the sensitive sliding piece, check to see if it is damaged before re-assembly.

Follow the steps in reverse order to reassemble your device.

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Member-Contributed Guide#

Introduction#

What you need#

Member-Contributed Guide

Introduction

What you need