ElcoBrandt SUPREME DED400XP1 Service Manual
EXPRESSO
DED400XP1
SERVICING AND MAINTENANCE
SERVICE INSTRUCTION
1/04
FILTER HOLDER GROUP HEAD (O-RING)
PAGE 1-7
Problem :
Liquid drips over the side of filter holder leaking out from between filter holder and filter
holder group head during coffee infusion.
2/04
FILTER HOLDER (O-RING)
PAGE 8-14
Problem :
During coffee infusion, liquid drips out of the side of the filter holder leaking out of the area
between filter holder base and where the spouts are screwed on.
3/04
THERMOSTAT
PAGE 15-20
Problem :
Water for brewing coffee or water for hot beverages from the water (or dry steam) wand is
not delivered at the desired temperature. The cause may be that one of the two safety
thermostats on the heat exhangers defective.
4/04
STOPS - BLOCKING
PAGE 21-27
Problem :
The dual function of the drawer handle is not working properly. When the drawer is pulled
out, the whole appliance slides forward out of its housing because the blocking mechanism
is not working.
5/04
CABLE SLACK
PAGE 28-31
Problem :
The appliance (cable) that sits between the panel wall of the machine housing and the back
panel of the espresso machine on the left-hand side, should form a loup, so that the
espresso machine can be glided smoothly out of the housing. However, it is causing an
obstruction and the espresso machine does not sit flush in the built-in cabinet, the safety
switch cannot engage and thus the machine has no power supply.
6/04
COFFEE GRINDER
Problem :
PAGE 32-41
The coffee grinder is not delivering coffee even though the sound of the motor can be
heard.
7/04
SENSORS
PAGE 42-61
Problem :
Brewing and beverage water (or steam) does not reach the prescribed temperature. The
reversible thermostats on both heat exchangers for coffee and/or hot beverages are
repeatedly triggered after being manually reset, even though there appears to be no
problem with the water supply and in-let system.
8/04
CIRCUIT BOARD REPLACEMENT
PAGE 62-74
Problem :
Semi-automatic processes are not functioning, which are normally engaged by pressing the
corresponding pad on the front control panel. Problems may include :
- Grinder
- Water for coffee - not delivered
- Steam / Water - not delivered
- By pressing on/off switch - no reaction
- By pressing one or two cups of coffee - no reaction
9/04
WATER PUMP /WATER PIPE
PAGE 75-86
Problem :
The water pump is very noisy (running without water) and hot water and brewing water are
being delivered slowly because there is a problem with water flow between the water
container and the heat exchanger.
SAFETY ADVICE FOR SERVICE ENGINEERS
PAGE 87
IDRAULIC LAYOUT DIAGRAM
PAGE 88
PRODUCT : SEMI-AUTOMATIC BUILT-IN COFFEE MACHINE
MODEL : SUPREME
1
Servicing and Maintenance
Product: Espresso-Machine
Model: Semi-automatic, Built-in
Service-Instruction: 1/04 Filter holder group head
(O-Ring)
Problem:
Liquid drips over the side of filter holder leaking out from between
filter holder and filter holder group head during coffee infusion.
coffee-brew should only flow out of the spouts on the lower part of the filter
holders.
Cause:
In the upper part of the group head there is the flange from which heated water
under pressure is forced through the tampered coffee during brewing. The flange
makes sure that the inner diameter of diffuser and filter holder group matches
the outer diameter of the filter holder. It is approximately 8-10 mm thick and has
a groove running around the outer edge which houses a gasket or seal made out
of heat-resistant, rubber-like material (O-ring) which normally prevents liquid
from leaking out between group head and filter holder. When the “O-Ring” is
defective or the wrong size, this can lead to the problem described above.
Solution:
The old gasket should be replaced with a new one following these
step-by-step instructions.
Safety Advice for Service Engineers
Attention: Before commencing any work on the appliance, it should be “disconnected”
from the electricity supply. This can be done by:
either removing the appliance plug from the mains socket or by isolating electricity
supply to socket through safety circuit-breaker or by turning off electricity completely
at mains switch.
As an authorised Service Engineer, you should comply with all European testing
standards and the relevant safety regulations for electrical appliances, in order not to
endanger yourself or other people and to prevent any other kind of hazards and risks.
2
For this electrical appliance, due to various systems that contribute to the working of the
machine, it is important that you observe and take note of the technical specifications of
the machine which include:
Power supply: 240 Volt mains
Heat exchanger and operating pressure up to 15 bar
Water containers and water conducting pipes (some under pressure)
Only authorised Customer Service Engineers are allowed to carry out work on this
Espresso machine (the opening of parts of the machine that are secured by screws).
European testing and safety regulations should always be complied with when carrying
out work on the appliance.
The appliance manufacturer and the Servicing firm shall not be liable for work carried
out that is not conformant with test an safety regulations and, likewise, tampering or
work carried out by unqualified servicing firms and local service engineers.
Step-by-Step procedure:
1. Firmly clutch the handle on the spill-tray drawer, and gently slide the Espresso
machine out of its housing towards you. (Opening as for water and coffee refilling
or replacing the grinder).
3
2. The upper front cover is screwed down with 6 countersunk screws. Unscrew and
remove all screws and take cover off.
3. Using a >>M10 spanner<< and a >>M13 spanner<< proceed to loosen the nuts
on the water in-let base arrangement located on the ALU-heat exchanger.
Unscrew the six
countersunk screws
on the cover.
Then remove cover.
First, loosen the
hexagonal “M10” nut,
then remove L-bend
element holding the
flexible water in-let tube.
Next, loosen the hexagonal
“M13” corner nut. Then,
remove the top and inner metal
plates. Finally the freed water
in-let group can be removed
from below.
4
4. Firstly, using the >>M 10 spanner<< carefully loosen the nut at the base of the Lbend element by >>turning anti-clockwise<<.
Attention: There is a threaded connection attaching the L-bend element to the water
in-let group. This thread is small and delicate. On the outer thread of the L-bend
element there is a mini seal that should not be lost. It is essential that this seal is
replaced when the part is screwed back in later.
Take out element with plastic pressurised in-let tube and place it temporarily to one
side.
5. Next, using the >>M 13 spanner<< remove the water in-let assembly
Once the M13 nut has been
removed, do the same thing with
the top and lower metal plates.
Finally, the sunken group can be
pushed out below by following
the instructions in this section
5
Attention: Provided the filter holder (bayonet coupling) is locked in place, then
the upper (M13) nut can be removed from the water in-let group without any
problem.
If the filter holder is not locked in place, and when the M13 nut is finally ready to
be removed, a hand should be placed under the filter holder group head to catch
the diffuser as it is released.
6. Removal of the diffuser
After having unscrewed and removed the water in-let assembly and the (M13)
nut and, likewise removed the top and lower metal plates on the top of the heat
exchanger, the diffuser and the insert screen can be glided out from below. You
will see that there is a groove on the outer perimeter of the diffuser that houses
the gasket (large O-Ring) that needs to be replaced.
7. Removing the gasket (O-Ring)
The description in the next section will show you how to remove the gasket.
Please avoid damaging or scratching the diffuser when removing the gasket
(use a small flat-headed screwdriver) and the delicate outer and inner thread
on the upper side.
6
Insert new gasket (large O-Ring) inside out.
After the O-Ring has been removed, a new gasket can be inserted, making sure it
goes into the groove inside out. Clean the screen, the groove (where the gasket
will sit) and the group of any residual deposits (coffee, etc.) before inserting the
new O-Ring.
After performing this operation, reassemble the entire group in reverse order:
1. Replace the diffuser by inserting it into the filter holder group head from
below and push up until it reaches the top position and the threaded part once
again protrudes out of the heat exchanger. Reposition the low and top plates
and position and tighten the (M13) nut.
Tighten the nut by turning in a clockwise direction using a >>M 13
spanner<< .
Remove the gasket from
its groove with the aid
of a small flat headed
screwdriver
7
Once the >>M 13 nut<< has been tightened, reposition the water in-let L-bend
element very carefully onto the inner thread of the water in-let arrangement on
the heat exchanger and then tighten up the M 10 nut by turning in a clockwise
direction making sure that it is >>securely<< fastened.
Remember to check that the mini seal has been replaced around the
outer thread of the L-bend element before reassembling it. Without
this seal the machine cannot be restarted up. Additional seals and
gaskets are available from the service department.
Once the water in-let tube has been reattached, the cover can be repositioned and
screwed into place using the six countersunk screws.
Finally, reposition the machine in its housing and reconnect electricity supply. Then,
switch the espresso machine back on and, after following normal start-up procedure, the
espresso machine is ready for use.
Carry out 2-3 test runs (espresso) to check whether the replacement of the gasket has
been successful.
Espresso should only be delivered from the spouts under the filter holder.
No liquid should drip out of where the filter holder group head meets the
filter holder nor should any sputtering or spraying be seen.
8
Servicing and Maintenance
Product: Espresso-Machine
Model: Semi-automatic, built-in
Service-Instruction: 2/04 Filter holder (O-Ring)
Problem:
During coffee infusion, liquid drips out of the side
of the filter holder leaking out of the area between
filter holder base and where the spouts are screwed on.
coffee-brew should only flow out of the spouts on the lower part of the filter
holders.
Cause:
Inside the filter holder there is a spring mechanism and a gasket or sealing ring
which, during coffee brewing, should prevent coffee brew from dripping over the
sides. The sealing ring in the filter holder has an almost limitless working life and
is resistant to damage due to high temperatures but a fault in the material from
which it is made may mean that it is defective.
Solution:
The old sealing ring should be replaced with a new one following
these step-by-step instructions.
Safety Advice for Service Engineers
Attention: Before commencing any work on the appliance, it should be “disconnected”
from the electricity supply. This can be done by:
either removing the appliance plug from the mains socket or by isolating electricity
supply to socket through safety circuit-breaker or by turning off electricity completely
at mains switch.
As an authorised Service Engineer, you should comply with all European testing
standards and the relevant safety regulations for electrical appliances, in order not to
endanger yourself or other people and to prevent any other kind of hazards and risks.
9
For this electrical appliance, due to various systems that contribute to the working of the
machine, it is important that you observe and take note of the technical specifications of
the machine which include:
Power supply: 240 Volt mains
Heat exchanger and operating pressure up to 15 bar
Water containers and water conducting pipes (some under pressure)
Only authorised Customer Service Engineers are allowed to carry out work on this
Espresso machine (the opening of parts of the machine that are secured by screws).
European testing and safety regulations should always be complied with when carrying
out work on the appliance.
The appliance manufacturer and the Servicing firm shall not be liable for work carried
out that is not conformant with test an safety regulations and, likewise, tampering or
work carried out by unqualified servicing firms and local service engineers.
Step-by-Step procedure:
1. Unlock the filter holder from the filter holder group head with a clean sideways
movement of the handle to the left. Working on a clear work surface, turn the
filter holder upside down and unscrew the spout.
10
2. Using a small hex key (2,5 mm), unscrew the three socket head screws which fix
the two-part filter holder base to the filter holder basket.
3. Now, remove the check plate with the aid of the hex key.
11
4. Turn the threaded centre pin on the filter holder so that the spanner surfaces
(notches) are exactly parallel to the elongated straight-cut edges of the base plate
cavity of the filter holder. Please see photo below!
5. With the aid of a round object (for example a sturdy glass, as show in the photo)
that fits into the filter holder basket, place the filter holder over the glass pressing
down firmly until the filter holder spring is under tension.
12
5. Using the handle, jiggle the base place out of its seating and over the threaded
centre pin.
6. The filter basket with the O-Ring (sealing ring) which is part of the centre
threaded pin assembly, and, likewise, the coiled-up spring can now be eased out
from below. The old O-ring can be replaced with a new one at this point.
13
7. Once the O-rings have been exchanged, reassemble the group following the
disassembly instructions in reverse order: The >broader< Spiral side must point
in the direction of the basket base.
Then, once again with the help of a round object (base of a glass), recoil the
spring and reassemble the base plate on the filter holder following the photo
sequence below:
1.
2.
3.
14
8. Reposition the check plate in its seating and then reposition socket screws and
tighten with the hex key. Then, screw the spout back on and tighten.
1.
2.
3.
Finally, lock the filter holder back under its group head and switch electricity back on.
Switch the machine on and, after following normal start-up procedure, the espresso
machine is once again ready for use.
Carry out 2-3 test runs (espresso) to check whether the replacement of the seal has been
successful.
Espresso should only be delivered from the spouts under the filter holder.
No liquid should drip out of the area where the threaded centre pin meets
the filter holder base nor should any sputtering or spraying be seen.
15
Servicing and Maintenance
Product: Espresso-Machine
Model: Semi-automatic, built-in
Service-Instruction: 3/04 (Thermostat)
Problem:
Water for brewing coffee or water for hot beverages from the water
(or dry steam) wand is not delivered at the desired temperature. The
cause may be that one of the two safety thermostats on the heat
exchangers defective.
Under correct working conditions, the electrical connections in the thermostats are closed and power
is delivered. In the case of a fault (for example the heat exchanger runs dry causing subsequent
overheating of the heat exchanger), the reverse circuit breaker is activated to prevent the heating
elements from burning out.
Cause:
The heat exchangers on the machine are positioned one on top of the other. Each
heat exchanger is equipped with a safety thermostat. The sensors establish the
maximum and minimum temperature of water in the heat exchanger. The safety
thermostats are activated when there is no water flowing into the heat exchanger
or when defective sensors signal abnormally high temperatures. In theses
instances, the relative thermostat is activated breaking the circuit and it
subsequently needs to be reset manually (reversible).
Solution:
The machine needs to be opened up and the upper cover removed
following the relative service instruction thus making access possible
to the two thermostats.
Safety Advice for Service Engineers
Attention: Before commencing any work on the appliance, it should be “disconnected”
from the electricity supply. This can be done by:
either removing the appliance plug from the mains socket or by isolating electricity
supply to socket through safety circuit-breaker or by turning off electricity completely
at mains switch.
16
As an authorised Service Engineer, you should comply with all European testing
standards and the relevant safety regulations for electrical appliances, in order not to
endanger yourself or other people and to prevent any other kind of hazards and risks.
For this electrical appliance, due to various systems that contribute to the working of the
machine, it is important that you observe and take note of the technical specifications of
the machine which include:
Power supply: 240 Volt mains
Heat exchanger and operating pressure up to 15 bar
Water containers and water conducting pipes (some under pressure)
Only authorised Customer Service Engineers are allowed to carry out work on this
Espresso machine (the opening of parts of the machine that are secured by screws).
European testing and safety regulations should always be complied with when carrying
out work on the appliance.
The appliance manufacturer and the Servicing firm shall not be liable for work carried
out that is not conformant with test an safety regulations and, likewise, tampering or
work carried out by unqualified servicing firms and local service engineers.
Step-by-Step procedure:
1. Firmly clutch the handle on the spill-tray drawer, and gently slide the Espresso
machine out of its housing towards you. (Opening as for water and coffee refilling
or checking the grinder).
17
2. The upper front cover is screwed down with 6 countersunk screws. Unscrew and
remove all screws and take cover off.
3. With the cover removed, the next photo shows the view of the inside layout from
above.
Unscrew the six
countersunk screws
on the cover.
Then remove cover.
18
4. The following picture shows the top-positioned heat exchanger seen from above.
In the centre of the heat exchanger there is the water in-let pipe assembly
through which heated water under pressure is forced through the tampered
coffee during brewing . Top left >>at 10 O’clock<< there is the earth connection
with a brass seal under which the temperature sensor (Minimum-Maximum
operating temperatures) can be found.
5. On the left side >>at 9 O’clock<< there is the reversible thermostat. In the
middle, between the two electrical connections, the reverse push button can be
seen (grey-brown). This push button must be in the pushed-in position.
6. After the reverse push button has been set in the pushed-in position, close the
machine for testing. (do not reassemble the top front cover!); switch the machine
on following normal start-up procedure. Wait until the top left and top right leds
(showing brewing water and hot water/steam temperature) remain alight. For
testing purposes, turn the knob on the front panel and check whether hot water is
delivered from the wand. In the event that the thermostat should cut out again,
then the fault could be with the thermostat. In this case, disconnect power supply
to machine and open it up. Follow the procedure outlined below:
a. With the aid of a very short screwdriver for phillips head screws (if available use
a rachet ), unscrew the top screw on the upper thermostat. Remove both AMP
casings and unscrew the lower Phillips screw. Remove the thermostat and apply
a small amount of heat conducting adhesive to the back of the new thermostat,
On the left, the
thermostat. Centre
the reverse push
button.
19
stick into position and screw tight using upper and lower screws. Put AMP
casings back on.
b. When the top-positioned thermostat has been unscrewed, the lower one becomes
visible and can be accessed. In the same way as before, to test the thermostat
push in the reverse (red) push button. If during the water and steam test, this
thermostat cuts out, then this could mean that it is also defective. In the case that
the bottom thermostat needs to be replaced, follow the procedure outlined for the
top thermostat. To unscrew the bottom thermostat use a suitable screwdriver.
Before doing this remove the AMP casings. The bottom thermostat makes
contact with the metal of the lower heat exchanger using a thin probe (fixed by a
screw). After the defective thermostat has been removed, apply thermal
conducting adhesive to the back of the new one, install and screw tightly into
position.
7. After having reversed (reset) the thermostat buttons and/or replaced the
thermostats, close up the machine ( do not yet screw the upper cover in place)
and test run the machine. When both brewing water and hot water/steam are
delivered from the wand at the right temperature, the repair has been carried out
successfully and the upper cover can now be screwed back into place.
8. The following photos shows the hand tools and spare parts that are essential for
carrying out this service repair. Together with the routine delivery of thermostat
spare parts for the Espresso machine, for installing two thermostats you will also
need to order a quantity of thermal conductive adhesive. This conductive paste
must be applied to the back surface in contact with the heat exchanger of the new
thermostats to be installed.
Here above, the
thermostat for the bottom
heat exchanger
Here above, the
thermostat for the top
heat exchanger
20
No 17 spanner
Phillips head
screwdriver
Phillips head rachet
Rev-Thermostat
bottom heat exchanger
Rev-Thermostat
Top heat exchanger
Bottom heat exchanger
thermostat
( Coffee brewing water)
165 ° C
nut size
no. 17 spanner
red reverse breaker
Top heat exchanger
thermostat
(Hot water + steam)
195 ° C
Screw holdfast plates X 2
Phillips head screws
brown reverse breaker
21
Servicing and Maintenance
Product: Espresso-Machine
Model: Semi-automatic, built-in
Service Instruction: 4/04 Stops - blocking
Problem:
The dual function of the drawer handle is not
working properly. When the drawer is pulled out,
the whole appliance slides forward out of its housing because the
blocking mechanism is not working.
Only when the drawer handle is lifted and pulled should the appliance come out
of its housing. By simply pulling the drawer handle, only the drawer should come
out.
Cause:
The movement required to slide the appliance out of its housing is for the handle
to be grasped and lifted slightly upwards; when this mechanism is working
correctly the stops blocking the appliance on the right and left sides of the
machine are released, so that the appliance slides along the glides and can be
pulled forward. Sometimes a production defect means that these stops are not
locked into position behind the corresponding groove (they do not fall into
position) so that the appliance is pulled forward out of its housing every time the
drawer is opened.
Solution:
The plastic stops need to be filed down so that they engage with the
grooves on the glide frames on the housing of the appliance.
Safety Advice for Service Engineers
Attention: Before commencing any work on the appliance, it should be “disconnected”
from the electricity supply. This can be done by:
either removing the appliance plug from the mains socket or by isolating electricity
supply to socket through safety circuit-breaker or by turning off electricity completely
at mains switch.
22
As an authorised Service Engineer, you should comply with all European testing
standards and the relevant safety regulations for electrical appliances, in order not to
endanger yourself or other people and to prevent any other kind of hazards and risks.
For this electrical appliance, due to various systems that contribute to the working of the
machine, it is important that you observe and take note of the technical specifications of
the machine which include:
Power supply: 240 Volt mains
Heat exchanger and operating pressure up to 15 bar
Water containers and water conducting pipes (some under pressure)
Only authorised Customer Service Engineers are allowed to carry out work on this
Espresso machine (the opening of parts of the machine that are secured by screws).
European testing and safety regulations should always be complied with when carrying
out work on the appliance.
The appliance manufacturer and the Servicing firm shall not be liable for work carried
out that is not conformant with test an safety regulations and, likewise, tampering or
work carried out by unqualified servicing firms and local service engineers.
Step-by-step procedure:
1. Clasp the drawer handle and lift so that the Espresso coffee machine glides
forward (opening as for water and coffee filing or checking the grinder).
23
2. After the machine has been pulled out, now pull at the drawer out until it reaches
its most forward position. Remove the top spill plate.
3. Remove the double-partition drawer liner.
The next photo shows one of the two (black) stops that need to be worked on.
24
Disassemble the whole drawer to make it easier to access the two stops from which
you will need to file off a small layer of plastic.
4. The whole drawer assembly is fixed underneath with four counter-sunk screws.
These screws can be accessed easily from below and need to be unscrewed.
Unscrew these four screws
25
5. Unscrew all 4 screws from below. This frees the whole drawer assembly which
can now be taken out.
6. You will find easier to work if you place the whole drawer assembly upside down
on a table. Now the corners of glide notches can be worked on comfortably.
After having taken out the 4 screws,
remove the whole drawer assembly
including the glide system and
place it upside down on a table
.
26
7. Now you need to file away about 2mm of material from the sloping surface of
the small, approximately 5 x 5 mm plastic components. It is better to >>file off a
bit more rather than a bit less<< , otherwise when you have re-assembled the
drawer, you will not have obtained the desired result, and this will mean having
to repeat the whole procedure one more time.
8. The small surfaces on both plastic components need to be filed down. These
surfaces should maintain the existing sloping edge, so that later, when they have
been re-assembled that can >>glide<< more easily behind the housing frame.
After final re-assembly, the drawer, after the appliance has been reinstalled in its
housing, should descend slightly (4-5 mm) and engage.
You will need to file off
about 2 mm of plastic from
the upper corner of this stop
using a small file.
File off about 2 mm from the top corner of the small
(approx. 5 x 5 mm) sloping surface only. In normal use the
draw should engage on this sloped surface. The appliance
should not glide out of its housing when the handle is lifted,
otherwise when the stops are lowered and engaged on the
drawer should slide out.
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