Krups XP7200 Series User manual

EXPRESSERIA COFFEE-MAKER
SERVICING MANUAL
RANGE
Pictographic model: XP7200 black facing silver panel Claris Filter (France)
Graphic model: XP7220 black facing silver panel Claris Filter
Graphic model: XP7240 titanium facing stainless steel panel Claris Filter +Auto-cappuccino
COMPONENTS
The appliance is made up of:
•1 1.3-L removable water tank
•1 flowmeter to proportion the volume of water
•1 15-bar pump + 16-bar relief valve
•1 motorized hydraulic distributor
•1 1300-W thermoblock system with:
- 1 coffee water circuit and 1 steam circuit
- 1 integrated percolation chamber
- 1 NTC for electronic temperature regulation and two 216°C thermal fuses
- 1 system for discharging the ground coffee by means of an ejection ram and scraper
•1 hydraulic plunger for closing the percolation head
•1 grinder
•2 electronic boards for:
othermoblock temperature regulation
omesuring the waterflow volume by counting flowmeter pulses.
o1-cup, 2-cup, hot water (graphic model), steam, cleaning and scale removal cycle
operations
ocurrent function display via indicator light (pictographic models)
oafter service information (number of cycles per function, failure code....)
OPERATION
NTC electronic temperature regulation:
Coffee: 108°C (position 1), 111°C (position 2), 113.5°C (position 3)
Steam: 140°C in preheating, 132°C in steam production
Safety cut-off: 190°C
1-cup cycle:
See cycle description with hydraulic diagram.
2-cup cycle:
2-cycles of 2-half-cups sequencing.
Cleaning cycle: only applied to the coffee circuit.
Succession of cycles pumping 50ml of water / 2-minute pauses.
Scale removal cycle: applied to coffee and steam circuit.
Succession of cycles pumping 50ml of water / 1-minute pauses.
Automatic priming function:
Priming is automatic if there is no flow during actuator down phase Æpumping via steam
nozzle.
1

PERFORMANCES
Coffee temperature (50cc):
First coffee: 75°C
Subsequent coffees: 77°C
Coffee temperature adjustment: +/- 2°C in position 1 or 3
Steam (125cc of water at 15°C, 1 min): 77 +/- 5°C
Hot water (125cc): 85 +/- 5°C
TOOLING AND EQUIPMENT REQUIRED FOR DISASSEMBLY & RE-ASSEMBLY
- Tamper Torx TX - 10H magnetized screwdriver (cover)
- Small Pozidriv No.1 screwdriver (control electronics protective cover)
- Gripping pliers (high-pressure tube clamps).
- Vacuum cleaner with small nozzle for ground coffee (clogging)
- Small, flat-tip screwdriver (high-pressure hose clamps)
- No.2 male hexagonal "Allen" key (coffee filter)
- Antistatic wriststrap for work on electronic boards
DISASSEMBLY
Parts to be disassembled
Facing
panel Cover Body Technical Facing Facing mount mount
Grinder ●●●
Tamping head ●●
Control board ●●●
if necessary
replace board
Power board ●●●
Pump ●●●
Flowmeter ●●●
Thermoblock /
actuator
●●●●
Fuses ●●●●
Distributor ●●●●(●)
Steam nozzle ●●
Coffee nozzle ●●
Body: (provides visual access to most parts inside the coffee-maker)
Remove the facing panel (raise and disengage the 6 hooks).
Remove the coffee bean container.
Remove the cover (2 screws under the cup-rest lid + 1 screw under the coffee bean container + 2 clips
at the rear removable by pulling on the rear cover rib.
(Do not remove the cup-rest lid or the or the cleaning tablet spout)
Remove the bottom 2 screws on the facing + 2 rear screws in the base.
Slide the body towards the rear: this can only be done when the 2 rear screws have been completely
removed; vertically push back the cover which protects the electronic circuit.
Grinder
No particular instructions: see re-assembly.
Ring kept in place on the grinder bush by 4 clips.
2

High-pressure hoses:
Unclip the clamp using a small flat-tip screwdriver (without removing it from the hose).
Disconnect the hose and bend it to prevent the braid slipping onto the silicone tube (do not pull
straight):
Pump + Relief valve
No particular instructions (to be confirmed with the new dampers).
Tamping head
Can be disassembled without removing the technical mount: be careful not to offset the
tamping head mount when unscrewing.
Æaccess to the coffee outlet grid, the creamy seal and the tamping head seal.
Switch control plate on the actuator
Unclip the 2 clips (access from the top).
Compress the actuator by pressing on the top nut
(using a socket spanner or equivalent).
Disassemble the switch control plate.
Flowmeter
No particular instructions.
Power electronic board
Electronic circuit mount maintained in the shroud by means of 2 clips at the lower part.
Control electronic board
Use an antistatic wriststrap
Remove the facing (2 screws + 4 clips accessible via side holes).
On the graphic model, it is possible to replace the display device (take particular care when
disconnecting the bundle on the elctronic board).
Fuse
To access, remove the facing panel (2 screws in the lower part + 2 screws in the technical
mount).
Raise the technical mount so as to disconnect the 2 bushings in the facing panel.
Determine why the fuses blew before replacing.
Check that there are no blow traces on the base and the tamping head.
3

Coffee nozzle
Unclip the coffee pipe.
Remove the nozzle clip by means of a rule or a screwdriver placed between the clip and the
facing mount:
Clip
Technical mount: (provides access to the distributor and thermoblock/actuator sub-assembly)
Unclip and remove the coffee inlet pipe and disconnect the hose on the tamping head.
Remove the window.
Remove the mounting screws from the technical mount.
Disconnect the connectors and the electronic circuit wires and take the wires out of the grommets.
Remove the technical mount with the grinder in place (the wires connected to the actuator switches
pass through the shroud opening).
Thermoblock / NTC / soldered lugs sub-assembly
There is no provision for dismantling this sub-assembly.
The only parts which may be replaced are:
•Tamping head parts (creamy seal, O-ring, coffee grid…)
•The ejection scraper
•The actuator switch control plate with its spring and 3 switches
•The interface and its seal
•The ejector rod "Barista" seal
Remove the 3 thermoblock/actuator sub-assembly mounting screws in the base.
Disconnect the distributor/thermoblock coffee hose from the distributor
Disconnect the thermoblock/distributor steam hose from the thermoblock system (if necessary
remove the drain from the distributor after disconnecting the coffee drain hose from the
distributor).
Disconnect the steam nozzle hose.
Thermoblock system and ejection scraper Interface
Remove the ejection scraper (this may be a little difficult as the screwdriver is not in line with
the screw).
Distributor
Remove the 2 distributor mounting screws in the base (Phillips-head indentation).
Disconnect the distributor/thermoblock steam hose from the thermoblock (remove the drain
from the distributor, if necessary after disconnecting the coffee drain hose from the distributor).
Remove the 3 thermoblock/actuator sub-assembly mounting screws in the base and tilt the
unit so as to have access to the hoses connected to the distributor.
Access to the distributor may be facilitated by removing the facing panel (2 screws + 4 clips)
and the facing mount (2 screws in the lower part).
Ejection rod "Barista" seal
Remove the tamping head
Unscrew the thermoblock/actuator from the bottom of the
coffee-maker and lift it up
Raise the ejector and remove the plunger head.
Remove the "Barista" seal.
4

Steam nozzle
Remove the panel and the facing (2 screws + 4 clips).
The nozzle is fixed in the facing mount by 3 clips (inaccessible from the front) and is unclipped by
pulling on the nozzle.
Lead
No specific instructions.
Removable tank
The valve gasket is difficult to replace.
RE-ASSEMBLY
Re-assembly is carried out in reverse order to disassembly.
Hoses
It is possible to re-use a hose after disassembly provided disassembly precautions were respected:
any damaged hose or one with a frayed braid must be replaced.
Use Norma Cobra 7.5 clamps.
Lock the clamps with gripping pliers and check that they have been
properly assembled:
Grinder
Indexing and mounting of the grinder ring on the coffee-maker are to be carried out with:
•1) the grinder set with bushing red marker facing the indexing ball
•2) the driving pin located at stop on "fine grinding" position
2
1
Ensure that wires go through the grommets.
NB: check that the brass spacers are mounted in the grinder screwing holes.
Check the ground coffee cake thickness after any work carried out on the grinder or electronics.
It is possible to adjust grinding time electronically to obtain specified cake thickness: 11 to 13 mm for
60-ml strong espresso.
5

Pictographic model
oConsult the grinding time programmed in the coffee-maker:
see grinder setting 0, 2, 4, 6 or 8 in the small display in line 22 of the 1st-level After-
Sales (A-S) mode.
GRINDER 1 (applied until 13/02/2006)
oAccess to V16 setting mode (self-test procedure at the end of the assembly line)
With cake tray, draw and tank removed
Press "steam" key + mains connection
Æ"cake tray" light comes on + "water" light flashes
oReplace the cake tray, draw and tank
oSet volume selector on minimum position
oPlace a receptacle under the coffee nozzle
oPress standard coffee key Îstart of standard coffee cycle
oBlue On/Off light comes on
oWith the rotating button, select the light corresponding to the one indicated in the table
below.
oPress the "service" key to validate (3 relay pulses)
oDisconnect the coffee-maker.
oAccess to V17 setting mode and future versions (self-test procedure at the end of the
assembly line):
Îsame as for V16 except that setting operation is carried out before the standard
coffee cycle
With cake tray, draw and tank removed
Press "steam" key + mains connection
oÎBlue On/Off light comes on (or another lamp if the selector is not on the minimum
position)
oWith the rotating button, select the desired cake thickness in accordance with the
table below.
oPress the "service" key to validate
oÎ"Cake tray" light comes on + "water" light flashes
oDisconnect the coffee-maker.
Light comes on on the
pictographic model On/Off Cake tray Tank Clean Calc
Grinder position (read-off
in line 22 of A-S mode) 0 2 4 6 8
Time for strong coffee
grinding (secs.) 4.1 4.3 4.5 4.7 4.9
(grinder 1 Î13/02/2006)
GRINDER 2 (applied from the 14/02/2006)
Access to V28 setting mode and future versions (self-test procedure at the end of the
assembly line) :
Îsetting procedure the same as V17, but with data of table below:
Light comes on on the
pictographic model On/Off Cake tray Tank Clean Calc
Grinder position (read-off
in line 22 of A-S mode) 0 10 20 30 40
Time for strong coffee
grinding (secs.) 6 7 8 9 10
(grinder 2, 14/02/2006Î)
6

Graphic model
GRINDER 1 (applied to 14/02/2006)
(V12 to V16 power boards and V6.8 to V8.6 Visu boards)
oAccess to consultation / setting mode (self-test procedure at the end of the assembly
line):
With cake tray, draw and tank removed
Press "prog" key + mains connection
oFollow the indications displayed
oSelect position 1, 2, 3, 4 or 5
oValidate with the OK key
oDisconnect the coffee-maker
Graphic model display 1 2 3 4 5
Time for strong coffee
grinding (secs.) 4.1 4.3 4.5 4.7 4.9
(grinder 1, Î14/02/2006)
GRINDER 2 (applied from the 15/02/2006)
(V8.7 power board, compatible with grinder 1, and V8.7 Visu board)
Graphic model display 1 2 3 4 5
Time for strong coffee
grinding (secs.) 6 7 8 9 10
(grinder 2, 15/02/2006 Î)
Lead
Respect the earthwire routing.
The lead earthwire must not be in contact with moving parts (stainless steel corners behind the
actuator) or hot parts (resistor and lug connectors)
Wiring
Grommets are to be respected in order to comply with interference suppression requirements:
generally speaking, wires which ensure power transmission (thermoblock, pump, grinder) are not
routed the same way as low voltage / low current wires.
Wires are arranged in the following order:
1. - 2 green water-level wires + 3 red flowmeter wires
2. – control board connector
3. - 2 blue NTC wires
4. - 2 green draw switch wires
5. - 2 blue-red distributor motor wires + 3 black-yellow-white distributor switch wires
6. - 2 grinder wires
See wiring photos in enclosed document.
7

Pump
Respect the direction of the clamp closing device on the pump outlet (risk that this might get in the way
of the cake tray housing).
Flowmeter
Respect the connections:
pump tube on the flowmeter lid
tank tube on the flowmeter casing.
Hoses must not be twisted or bent.
Thermoblock-actuator sub-assembly
Direct the device for closing the clamp on the actuator pipe downwards (risk that this might get in the
way of the ejection scraper).
actuator
Tamping head
When screwing, be careful not to offset the tamping head mount.
Thermoblock and ejection scraper interface
Take care when replacing the seal which must not protrude into the coffee chamber.
.
Distributor
Replace the 2 pins of the drain receptacle properly in the 2 holes of the base.
Check that all hoses are tightly connected, in particular the easily detachable drain hoses, and that the
clamps are properly clipped onto the high-pressure hoses.
Check that the drain hose is not bent or caught.
The ejection rod "Barista" seal
Ensure that re-assembly is made the correct way up (lip facing upwards).
Only grease the ejection rod, and sparingly, with food grade grease.
8

Distributor drain casing
Be careful to centre the spring properly on the bushing at the bottom of the drain body (risk that it
might catch on the notches).
The drain plunger must be mounted in the body of the drain with food grade grease.
Ensure that the drain body is firmly locked down on the distributor (tighten counterclockwise).
Electronic boards
Connectors on electronic boards: check that connectors are well secured by the clips.
Check the coffee volume selector button for correct indexation (1/2 turn possible error).
Check ground coffee cake thickness after any work on electronics or the grinder.
Steam nozzle
Be careful when replacing the O-ring as this is a delicate operation.
Body
There is a risk that switches might catch on the cake tray housing inside the body: press the body
down firmly when replacing.
9

SERVICING AFTER CLOGGING-UP OF GROUND COFFEE
Remove the cleaning inlet and the drawer.
Scrape and suck up the ground coffee in and around the thermoblock tank using a vacuum cleaner
with a small end piece (flexible hose with ~10 ext. diameter).
Carry out a cleaning cycle:
If the ejection ram works properly in the tank ÎOK
If it sticks, activate manually with a rod inserted through the base:
Check that the drawer switch works properly: any ground coffee in the drawer slide channels could
affect the control. If this is the case, remove the technical mount to clean the slide channels.
Renew a cleaning cycle.
Determine the reason why clogging-up occurred (see troubleshooting diagnosis table):
grinder not compliant (quantity of ground coffee)
electronics setting not compliant with the grinder
ejection ram stuck in high position
cake tray replaced partially full
CLEANING AND SCALE REMOVAL CYCLES
The cleaning light comes on after 350 coffees (or espressos).
The scale removal light comes on after:
•12,000 cycles with water hardness setting 0
•10,000 cycles with water hardness setting 1
•8,000 cycles with water hardness setting 2
•6,000 cycles with water hardness setting 3
•3,000 cycles with water hardness setting 4
with:
•1 coffee (or espresso) = 1 cycle
•1 "steam" function = 25 cycles (V16 picto power board and V6.8 to 7.0 Visu display)
= 40 cycles (V17 picto power board and V7.2 Visu display)
•1 "hot water" function = 10 cycles
The number of cycles is doubled when a filter is used (progamming in the display version).
10