HD7870/80 /
HD7870/81
4-12
DISASSEMBLY- AND RE-ASSEMBLY ADVISE
To remove the brewhead assembly:
• Remove the back cover.
• Remove the boiler, or simply lay it aside.
• Use both thumbs to push the brewhead upwards; you
may need to tilt the brewhead forward to remove it
from the appliance.
To remove the PCB assembly (34):
• Remove the back cover
• Remove the boiler
• Remove the brewhead assembly
• Remove the Main PCBA cover (
33
)
• Disconnect the following leads:
-
NTC
(fl
at
cable)
- Water level sensor (fl at cable)
-
(
z
) UI PCBA (fl at cable)
-
(
s
) Live
-
(
t
) Pump
-
(
u
) Neutral
-
(
v
) Earth
• You can now unhook the snap hooks holding the PCBA
in place.
To access components located in the base of
the appliance (UI Panel, Pump, Water container
interface)
Open the Base:
• Remove the back cover
• Remove the boiler
• Remove the brewhead assembly
• Remove the Main PCBA cover (
33
)
• Remove the PCB assembly
• Unscrew the two screws (
B
) holding the Front housing
(
23
) in place. Remove the front housing
• Take the base of the appliance, using a small screw driver
start at the point indicated in the picture. Gently push
it between the tray panel assembly (
36
) and base plate
(41
), the hidden snap should click open.
• Undo the two click connections visible on the bottom
side of the appliance.
• Now use the screwdriver to trace around the edge of
the tray panel assembly and base plate until you reach
the position of the drip tray. Repeat the process for the
other side. All snap hooks will come undone.
Please note that the water container interface is still
connected to the tray panel assembly and to the pump on the
base plate
To access the capacitive UI PCBA:
• Remove the back cover
• Remove the boiler
• Remove the brewhead assembly
• Remove the Main PCBA cover (
33
)
• Remove the PCB assembly
• Unscrew the two screws (
B
) holding the Front housing
(
23
) in place. Remove the front housing
• Open the Base
• Turn the Tray panel assembly upside down and open the
clicks of the UI PCBA Cover
• Here you will find:
- UI PCBA (
38
)
- UI Panel frame
-
Light
distributor
Descaling
Descaling is an important element in Senseo maintenance.
It should be done at least once every 3 months, up to
6 times a Year! This will prolong the life of your appliance
and will guarantee optimal brewing results for a long time.
Use the correct descaling agent. Only citric acid-based
descalers are suitable for descaling the SENSEO
®
machine.
This type of descaler descales the appliance without
damaging it. For the correct amount, see the instructions
in the packaging of the descaler.
We advise you to use the special SENSEO
®
Descaler
(HD7011 or HD7012). Read the instructions on the
package of the descaling agent. Never use a descaling agent
based on mineral acids such as sulphuric acid, hydrochloric
acid, sulphamic acid and acetic acid (e.g. vinegar). These
descaling agents may damage your SENSEO
®
coffee
machine. Follow the steps in the section headed “Descale
the appliance” see DFU (Direction for Use manual).
