Foster 2998100 Manuale utente
SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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INDEX&
1) SAFETY'
2) SCOPE'OF'THIS'MANUAL'
3) DIMENSIONS'
4) HYDRAULIC'SCHEME'
5) ELECTRICAL'SCHEME'
6) STRUCTURE'
1) General'access'
2) Access'to'complete'coffee'unit'
7) FAST-ON'CONNECTIONS'
8) STEAM'ADJUSTMENT'
9) FUSE'REPLACEMENT'
10) SAFETY'THERMOSTATS'RESET'
11) KEYBOARD'REPLACEMENT'
12) POD-DRAWER'REMOVAL'
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SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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A. SAFETY&
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Prior' to' accessing' to' internal' components' and' in' general' prior' to' intervening' on' the' appliance' at' all,'
make' sure' that' the' power' cord' has' been' disconnected' from' the' mains' and' that' the' hot' parts' have'
cooled'down.''
When'necessary,'and'anyway'when'possible,'it'is'advisable'to'make'resistance'measurements;'avoid&as&
much&as&possible&tension&or¤t&measurements&on&the&appliance,&because&they&could&damage&the&
electronic&chips&of&the&appliance.&&
WARNING:' the' appliance' has' metal' parts.' It' is' therefore' advisable' to' use' much' care' in' moving' the'
appliance'and'in'working'on'it,'so'as'to'avoid'scratches,'abrasions'or'cuts.''
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B. SCOPE&OF&THIS&MANUAL&
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This'manual'is'meant'for'technicians'who'already'master'the'necessary'knowledge'to'repair'coffee'
machines'for'domestic'use.''
The'intent'of'this'manual'is'to'give'them'a'general'information'on'the'appliance,'so'as'to'facilitate'its'
repair'and'maintenance.''
More'detailed'information'on'specific'issues,'can'be'obtained'my'perusing'the'specific'technical'
documents'about'the'appliance:''
- List'of'spare'parts'
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C. DIMENSIONS&
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SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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HYDRAULIC&SCHEME&
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The'circuits'for'hot'water,'steam'and'coffee'are'fed'by'the'same'vibration'pump;'therefore,'their'supply'
happens'separately.''
Hereafter'is'a'short'description'of'the'operating'sequences'concerning'the'four'main'functions:''
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Coffee&supply:&
By' pushing' the' coffee' button,' the' cycle' of' supply' is' initiated' with' the' start' of' the' pump' P1' and' two'
electro-valves' EV2' –' EV4.' The' electro-valve' EV2' is' connected' to' the' hydraulic' piston' which' reaches'
operating'pressure'by'closing'the'infusion'chamber'on'the'drawer'filter.'At'the'same'time,'the'electro-
valve' EV4' is' opened' and' allows' passage' of' pressured' water' through' the' non-return' valve' VR1,' set' to'
open' at' the' optimal' supply' pressure.' Water' passes' through' the' coffee' exchanger' and' flows' in' the'
infusion'chamber'at'the'operating'temperature'only'if'the'mechanical'sensor'of'pod'presence'is'open,'
that'is'if'the'pod'is'present'on'the'filter.'To'stop'the'supply,'press'the'coffee'button'again.'The'pump'P1'
is'stopped'at'the'same'time'as'the'electro-valve'EV2,'while'the'electro-valve'EV4'enables'the'drainage'
of'water'in'the'drop-receptacle'basin'through'the'silicone'pipe.''
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Hot&water&supply'
When' pressing' the' hot' water' button,' the' pump' P1' and' the' electro-valves' EV1' and' EV4' are' activated.'
Water'flows'through'the'two'electro-valves'and'is'heated'by'the'coffee'exchanger,'then'flows'through'
the' moveable' supply' pipe.' When' the' required' quantity' is' reached,' to' stop' the' supply' press' the' hot'
water' button' again.' The' pump' and' the' two' electro-valves' are' stopped' and' the' water' in' excess' still'
present'in'the'coffee'exchanger'flows'back'through'EV4'and'back'in'the'drop-receptacle'basin'through'
the'silicone'pipe.'
SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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Steam&supply:&
When' pressing' the' steam' button,' the' steam' exchanger' is' activated.' During' the' heating' process,'
indicated' by' the' blinking' LED,' no' supply' is' possible.' When' the' work' temperature' is' reached,' the' LED'
light'becomes'fix.'To'supply'steam,'press'the'steam'button'again:'the'pump'P1'and'electro-valves'EV4'
and'EV3'are'activated.'Water'flows'through'the'pressure'regulator'RP1,'which'is'set'for'the'proper'work'
pressure,'and'heated'by'the'steam'unit,'and'exits'through'the'moveable'supply'pipe.'To'stop'the'supply,'
press'the'steam'button'again.'The'pump'and'the'two'electro-valves'are'stopped'and'the'excess'water'
within' the' steam' exchanger' flows' back' through' EV3' which' enables' the' drainage' back' in' the' drop-
receptacle'basin'through'the'silicone'pipe.'
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De-calcification&cycle&
This' programme' operates' the' pump' to' circulate' the' de-calcification' solution' without' heating' the'
heating-elements' in' both' the' coffee' and' steam' units.' By' pushing' for' 10' seconds' the' button' which'
signals'the'empty'tank,'the'coffee'and'hot'water'buttons'will'start'to'blink.'The'solution'is'to'be'mixed'
in' the' water' tank' prior' to' initiating' the' supply' of' the' de-calcification' solution' (using' the' fake' pod'
supplied'with'the'appliance)'through'the'coffee'unit'or'steam'unit.'The'activation'sequence'of'the'pump'
and'the'electro-valves'is'the'same'described'above.''
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SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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D. ELECTRICAL&SCHEME&
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SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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E. STRUCTURE&
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1. GENERAL&ACCESS&
BEFORE&DOING&ANYTHING,&DISCONNECT&THE&APPLIANCE&FROM&THE&ELECTRICAL&MAINS&
Prior'to'accessing'the'internal'components'and'anyway'prior'to'any'action'on'the'appliance,'
make'sure'that'the'power'cord'has'been'disconnected'from'the'electrical'mains'and'that'the'
hot'parts'have'cooled'down.'Then'proceed'as'follows:'
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Disconnect''the'power'cord.''
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Unscrew' the' 8' screws' (Allen'
screws' 2,5' mm)' that' keep' the'
side'panel'in'place.'
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SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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Unscrew' the' 2' screws' of' the'
command' panel' (Allen' screws'
2,5'mm).''
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Lift' and' remove' the' panel' by'
pulling'upward.'''
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Once'the'panel'has'been'removed,'it'is'possible'to'gain'access'to'the'following'components:'
A. Feed'pipes'and'pump'drain.'
B. Connectors'for'LED'connections.'
C. Power'electronic'chip'and'keyboard.'
D. Coffee'hydraulic'unit'pipes.'
E. EMI'RF'grid'filter'+'main'switch.'
F. Steam'joint.'
G. Complete'coffee'unit.'
H. Mechanical'catch'screw'of'pod'drawer.'
I. Empty'water'tank'micro'switch.'
L. Pod'drawer'micro'switch.'
M. Steam'exchanger'safety'thermostats.'
N. Steam'pressure'regulator.'
O. Pod'drawer'catch'screw.'
SERVICE'MANUAL'–'Coffee'Machine'mod.'2998100'-'2998600'
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2. ACCESS&TO&COMPLETE&COFFEE&UNIT&
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To' be' able' to' reach' the' majority' of' the' appliance' components,' it' is' necessary' to' disassemble' the'
frame'of'the'coffee'unit.'Prior'to'loosen'the'anti-vibration'system'bolts,'it'is'necessary'to'disconnect'
the'wiring'and'the'pipes'of'the'fixed'part.'Proceed'thus:''
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1) Extract'the'feed'and'drain'pipes'of'the'water'
tank;''
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2) Disconnect' the' outflow' pipes' from' the' steam'
exchanger;''
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3) Disconnect'the'drain'pipe;'
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4) Disconnect'the'connector'of'the'command'
keyboard;'
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5) Disconnect' the' power' cord' on' the' side' of'
where'the'main'switch'is;'
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6) Disconnect' the' empty' tank' micro' switch' and'
the'grounding'wire;'
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7) Disconnect'the'grounding'wire;'
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8) Extract'the'power'cord'from'the'side'passage;'
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