La San Marco New 105 Touch SEries User guide

ENGLISH
USE AND MAINTENANCE
NEW 105 TOUCH SERIES

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Manual code: 7770.032
Revision 05/2010
Index
1. Introduction.......................................................pag. 3
1.1 Using the manual .................................................pag. 3
1.2 Warnings .......................................................pag. 3
1.3 Starting the coffee machine .........................................pag. 4
1.4 Technical characteristics ...........................................pag. 4
2. Description of the machine ......................................pag. 5
2.1 General water system diagram ......................................pag. 6
2.2 Water system diagram key: .........................................pag. 7
3. Installation ........................................................pag. 8
3.1 Equipment provided...............................................pag. 8
3.2 Water mains set-up ...............................................pag. 8
3.3 Water softener (optional) ...........................................pag. 8
3.4 Installation of water system .........................................pag. 9
3.5 Drain...........................................................pag. 9
3.6 Electrical connection ..............................................pag. 9
4. Start-up ...........................................................pag. 11
4.1 Filling the boiler with water .........................................pag. 11
5. Adjustments ......................................................pag. 11
5.1 Adjustment of boiler water level probe ................................pag. 12
5.2 Adjustment of pump dispensing pressure ..............................pag. 12
5.3 Adjustment of steam pressure in boiler ................................pag. 12
5.4 Temperature adjustment of dispensing units: ...........................pag. 13
5.5 Additional notes for NEW 105 DTC (Dual Temperature Control) models.......pag. 13
5.6 Hot water temperature adjustment ...................................pag. 14
6. Operating instructions ...........................................pag. 14
6.1 Dispensing espresso coffee.........................................pag. 14
6.2 Drawing steam ...................................................pag. 14
6.3 Drawing hot water ................................................pag. 15
6.4 Cup heater (optional) ..............................................pag. 15
7. Programming the New 105 Touch models......................pag. 15
7.1 Keys ...........................................................pag. 15
7.2 Dispensing ......................................................pag. 17
7.3 Coffee boiler heating ..............................................pag. 21
7.4 Programming and readings .........................................pag. 22
7.5 Technical level programming ........................................pag. 26
7.6 Alarm signals ....................................................pag. 31
7.7 Default preset data................................................pag. 34
7.8 Procedures in the event of a power failure..............................pag. 35
8. Routine maintenance ............................................pag. 36
8.1 Cleaning the dispensing units and the lter cup .........................pag. 36
8.2 Cleaning the tray and cup support grille ...............................pag. 36
8.3 Cleaning the steam spout ..........................................pag. 36
8.4 Replacing the boiler water ..........................................pag. 36
9. Idle periods .......................................................pag. 37
10. Display of alarms ...............................................pag. 37
10.1 Volumetric meters alarm ..........................................pag. 37
10.2 Automatic level alarm ............................................pag. 37
10.3 Maximum water level in boiler alarm .................................pag. 37
11. Safety devices ..................................................pag. 38
11.1 Manual reset safety thermostat .......................................pag. 38
11.2 Safety valve .......................................................pag. 38
12. User information ....................................................pag. 38
13. Guarantee .........................................................pag. 39
14. Declaration of conformity ..................................pag. 39
15. Troubleshooting .................................................pag. 40

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1. Introduction
Before using the machine, carefully read all of the instructions contained in this machine.
1.1 Using the manual
This manual contains all information required for the installation, use and maintenance of the cof-
fee machine.
This manual is an integral part of the machine; always keep it intact together with the appliance.
1.2 Warnings
 • Do not operate the machine or carry out routine maintenance before reading this
manual.
• Thismachineisdesignedandbuiltfordispensingespressocoffee,hotwater(forthe preparationofhotbeveragesandinfusions)andsteam(usedtoheatliquids).Theuse
ofthemachineforanyotherthanitsintendedpurposesisconsideredtobeimproper
andunauthorised.Themanufacturerdeclinesanyliabilityfordamageresultingfromthe
improper use of the machine.
• Theuser mustbearesponsibleadult,whoisexpected tocomplywithlocalsafetyrulesand accepted
commonsenseprocedures.Forthecorrectandsafeuseofthismachine,theoperatormustobservethe
accident-preventionrulesandanyothermedicaloroccupationalhygienerequirementsapplicableinthe
country where the machine is used.
• Machineuse,alongwithallroutinemaintenanceandcleaningoperationsmustonlybeperformedbyau-
thorisedpersonnel,appointedbythecustomerundertheresponsibilityofthelatter.
• Donotinstalltheespressocoffeemachineinroomswhicharecleanedwithwaterjets.
• Neverturnthemachineonbeforeithasbeenconnectedtothewatermains.Thewatercut-offvalvemust
remain open when the machine is on. The user must make sure of this.
• Onlyplaceemptycupsonthepurpose-providedcupsupportgrille.
• Nevercoverthemachinewhenitisinoperation.Theremustbesuitableairrecirculation.
• Itisabsolutelyprohibitedtooperatethemachinewiththexedand/ormobileguardsremovedorwiththe
safetydevicesbypassed.Thesafety devices must absolutely neverbe removedor tamperedwith. The
panelscoveringthemachinemustnotberemoved,asthemachinecontainsliveparts(thereistheriskof
electricshock).
• Beforeperformingany routine maintenance or cleaningoperations, unplug machine fromthe socket, if
possible,otherwisetriptheomnipolarswitchupstreamofthemachine.
• Thesafetydevicesmustalwaysbeinperfectcondition,observingtheregularmaintenanceperformedby
LaSanMarcoauthorisedpersonnel.
• Thehotpartsofthemachine(dispensingunit,boiler,piping,etc.)couldcauseburnsduetoaccidentalskin
contact.Gloves,aprons,etc.shouldthereforebewornduringmaintenanceorrepairwork.
• Forcleaning,avoidtheuseofproductssuchasalcohol,petrolorsolventsingeneral;usewaterandneutral
detergents.
• Tocleanthebodyofthemachine,simplywipeitwithadampclothorsponge;donotuseabrasiveprod-
uctswhichcoulddamagepartsofthemachinebody.Tocleanthecoffeedispensingunits,theltercups,
grillesandtrays,followtheinstructionsprovidedinthechapterentitledRoutineMaintenance.
• Forimprovedmachinequality,onstartingthemachineeveryday,thewaterintheboilermustbereplacedand
thatcontainedinthepipingmustbeemptiedandreplaced.Shouldthemachinebeleftidleforseveralhours
overthecourseoftheday,itisadvisabletoreplacethewaterbyallowingittoowoutofthehotwaterdrawing
tap and the coffee dispensing units.
• Strictcompliancewiththeroutinemaintenanceinstructionsofthismanualisrequiredforasafeandefcient
operation of the appliance.
• Intheeventoffaultsorbreakageofanycomponentoftheespressocoffeemachine,contactanauthorised
servicecentreandinsistonoriginalLaSanMarcoS.p.A.spareparts;theuseofnon-originalsparepartswill
nullifythecerticationofconformityandtheguaranteewhichaccompanytheappliance.

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• Allmodicationstothemachineand/orfailuretoperformthescheduledmaintenanceoperationsrelievetheman-
ufacturerofanyliabilityforanydamageensuedandnulliesthedeclarationofconformityandtheguarantee.
• Performingoperationsonthemachinewhichhavenotbeenauthorisedisstrictlyforbidden;contactthemanu-
facturer for any information or requests for spare parts or accessories.
• Ifthemachineisnolongerusedandrequiresdismantling,pleasecontactthemanufactureroryourlocalcouncil
forthedisposalofurbansolidwastedisposalprocedures.Donotdiscardintotheenvironment.
• SanMarcoS.p.A.reservestherighttomaketechnicalmodicationstothemachinewheredeemednecessary
without notice.
1.3 Starting the coffee machine
Ambient temperature: 5 ÷ 45°C (drain the water system in case of frost)
Mains water pressure: 80 ÷ 800 kPa (0.8 ÷ 8.0 bar)
Water hardness: less than 5° fH
Noise level emitted by the machine: The weighted sound pressure level A is below 70 db(A), under normal
conditions of use of the machine.
1.4 Technical characteristics
MODEL N°
GR.
CAPACITY
BOILER).
L
POWER INPUT (W)
WEIGHT
(kg)
C
AB
CONNECTION MAINS
PUMP
MOTOR
CUP HEATER
(Optional)
MONO-
PHASE
THREE
PHASE
A (mm) B (mm) C (mm)
NEW 105 T
2 12 3500/4500 3500/4500 275 100 60 790 535 518
3 19 5500 5500/7000 275 125 74 1030 535 518
NEW 105 T DTC
2 12 3500/4500 3500/4500 275 100 60 790 535 518
3 19 5500 5500/7000 275 125 74 1030 535 518
Standard:
• Automatic level (automatic lling of water in
boiler).
• Incorporatedpump.
• Temperatureadjustmentofdispensingunits
(not available on NEW 105 DTC models).
• Stabilisedtemperatureunit(NEW105DTC)
• Hotwatermixerwithtemperatureadjustment.
• Electroniccontrolofboilertemperature.
On request:
• Electricalcupheater.
• Watersoftener(manualorautomatic).
• Externalpump(300W).
• Cappuccinomaker.

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2. Description of the machine
Note:Thetermsusedinthisdescriptionwillcommonlybeusedthroughoutthefollowingpages.
New 105 Touch
KEY:
1) Main switch
2) Espresso coffee serving unit
3) Filter cup with handle
4) Double-scale pressure gauge
5) Lower tray + cup support grille
6) Electronic level
7) Steam spout
8) Burn protection sheath for steam spout
9) Hot water spout
10) Steam drawing knob
11) Touch control panel
12) Upper cup support grille
12 11 10
6
9
7
8
32 54
1

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2.1 General water system diagram
New 105 models New 105 DTC models

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2.2 Water system diagram key:
1) Water softener
2) Water softener outow valve
3) Water softener outow valve
4) Supply from water mains
5) Electric motor pump
6) Pressure gauge
7) Non-return and safety valve
8) Automatic level control valve
9) Filter
10) Automatic level solenoid valve
11) Automatic level control valve
12) Boiler water lling valve
13) Non-return valve
14) Boiler water drain valve
15) Manifold tap
16) Volumetric meters
17) Exchanger tap
18) Safety thermostat probe
19) Electric heating element
20) Heat exchanger
21) Safety thermostat
22) Temperature probe
23) Steam valve
24) Hot water mixer
25) -
26) Pressure gauge (boiler)
27) Vacuum valve
28) Maximum level probe
29) Level probe
30) Safety valve
31) Electronic control unit
32) Electronic level
33) Temperature adjustment of dispensing units (not available on NEW 105 DTC models)
34) Infusion device
35) Dispensing unit
36) Filter cup
37) Dispensing unit solenoid valve
38) Tray and cup support grille
39) Drain tray
40) Drain tube
41) Cooling tube (NEW 105 DTC)

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3. Installation
 • InstallationmustbecarriedoutbyskilledauthorisedLASANMARCOSPAtechnical
personnel.
• The coffee machine is delivered in suitable packaging. The packaging contains the machine and its accessories, the user manual and the conformity declaration. After
opening the packaging, make sure the coffee machine and its components are intact.
Incaseofdoubt,donotusetheappliance,andcontactthemanufacturer.
• Allofthepackagingmustbecarefullysetasideincasethemachineneedstobetrans- ported in future.
• Themachineshouldbeplacedonaperfectlyhorizontalsurface,whichissufciently sturdyto supporttheweightofthemachine, withasufcientclearancearounditto
dissipate the heat generated during its operation.
• Donotinstalltheespressocoffeemachineinplaceswherecleaningistobecarriedout withjetsofwater.Donotimmergetheunitinwatertocleanit.
• Forsafetyagainsthazardsrelatedtoelectricalcurrents,keepthemachineawayfrom sinks,tubs,aquariums,taps,andareasthatarewetorwherewatermaysplash.
• Themachinecreatesheat.Thereforeitneedstobeplacedinaroomthatissufciently ventilatedtoensureheatdissipation.Keepthemachineawayfromsourcesofdirect
heat.
• Makesurethatthevoltageofthepowersocketdoesnotdifferfromthatindicatedin thetechnicaldataandontheidenticationplateafxedtothemachine.Ifthevoltage
isdifferent,donotconnectthemachine.Thismaybedangerousandmaydamagethe
appliance.
3.1 Equipment provided
The machine packing contains the equipment kit, which includes the following items:
– lter cups with lter restraint ring
– lters for lter cups (single and double doses)
– blind lter for lter cup
– lters for lter cups (single and double doses)
– press for ground coffee
– rubber tube with stainless steel mesh for water connection (water circuit - water softener)
– rubber drain hose with steel coil for water drain
– 3/8" nipples for hose connection to water supply tube
– cleaning brush for serving units
3.2 Water mains set-up
FEEDING LINE
Bring the water feeding tube (at least 3/8" in diameter) up to the machine and install an cut-off valve (prefer-
ably of 3/8" ball type) that allows a rapid opening and closing operation. The appliance should be connected
to the water mains using the tube supplied with it. Do not connect the appliance with used tubes.
DRAIN LINE
Provide an inspectable drain pit on the oor connected with the sink drain line, suitable for receiving the ma-
chine gravity drain tube. The drain tube must be positioned so that the water ows out freely, without it being
possible for the pipe to clog up during operation.
3.3 Water softener (optional)
 Thewater softenerfor softening themains water canbe manualor automatic, dependingon
customer's request.
 Beforeconnectingthewatersoftenertothecoffeemachine,theresinscontainedinitshouldbe
washedoffasdescribedintheusermanualsuppliedwiththeappliance.

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Note:
Thewatersoftenerisconsideredanessentialdevicetoguaranteeaproperoperationoftheespressocoffee
machine.Awatersofteningsystemshouldbeprovidedinordertoguaranteetheefciency,performance
and duration of the components in the machine.
3.4 Installation of water system
INTERNAL PUMP
1) Use the tube a(900 mm, supplied with the appliance) to connect the cut-off valve of the water mains to
the tap 1for water inlet to the water softener (gure 3).
2) Connect the tube bfor internal pump suction to the tap 2of the water softener (gure 4).
gure 3 gure 4
EXTERNAL PUMP (OPTIONAL)
1) Use the tube a(900 mm, supplied with the appliance) to connect the cut-off valve of the water mains to
the tap 1for water inlet to the water softener (gure 5).
2) Use the tube c(600 mm, supplied with the external pump) to connect the pump suction to the tap 2of
the water softener (gure 6-7).
3) Connect the tube d (of the coffee machine's water system) to the pump delivery (gure 7).
Figure 5 Figure 6 Figure 7
3.5 Drain
Connect the drainage tube to the grounds collecting tray and to the water drainage system.
3.6 Electrical connection
 Instructionsforaproperelectricalconnectionoftheespressocoffeemachine:
 • Beforeconnectingtheappliancetotheelectricalmains,makesurethatthedataonthe
data plate corresponds to the electrical mains.
 • Connectionmustbemadeincompliancewithregulationsinthecountryofinstallation.
 • Theelectricalsystemprovidedbythecustomermustcomplywiththeapplicablestand-
ardsinforce;thepowersocketmustbeequippedwithanefcientearthconnection.
LASANMARCOSPAwillnotinanywaybeheldliableiflegalrequirementsarenot
met.Improperinstallationmaycausepersonalinjuryorpropertydamageforwhichthe
manufacturercannotbeheldliable.
• Fortheelectricalconnection,itisnecessarytoinstall an omnipolar main switch up- stream of the power supply; this switch should be rated according to the electrical
characteristics(powerandvoltage)shownontheappliancedataplate.Theomnipolar
switch must disconnect the power supply with a contact gap of at least 3 mm.
a 1 b 2
a 1 b 2
b c

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• Ifitisnecessarytouseadapters,multipleplugs andextensions,onlyproductsmeetingapplicablesafetystandardsmustbeused.
• Toavoidanyoverheatingofthepowercable,unwinditcompletely.
Connect the power cable to the electrical mains as shown in the attached diagram:
BLUE
BLACK
BROWN
BLACK
YE/GR
NEW 105 TOUCH
NOTES:
* The power absorbed
by the electric
heating elements
can be reduced to
2/3 by eliminating
one of the BLACK
wires.
BLUE
BLACK
BLACK
BROWN
YE/GR
BLUE
BLACK
BLACK
BROWN
YE/GR
BLUE
BLACK
BLACK
BROWN
YE/GR
BLUE
BLACK
BLACK
BROWN
YE/GR
3 HEATING ELEMENTS
3 HEATING ELEMENTS
230V-3N MONO-PHASE* 400V-3N THREE PHASE
230V-3N THREE PHASE

11
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4. Start-up
 • Theespressocoffeemachinemustbestartedbyqualiedtechnicalpersonnelauthor-
isedbyLASANMARCOSPA.
• Oncetheelectricandhydraulicconnectionsarecompleted,theuserisadvisedtostart theespressocoffeemachinewiththefollowingprocedureinordertoavoiddamaging
the appliance.
4.1 Filling the boiler with water
1) Check that the main switch of the appliance 1(gure 1) is set to position 0(zero).
2) Remove the tray and the cup support grill and make sure that:
a) The boiler drain valve a is closed (gure 8).
b) The taps of the automatic level valve b-c must be open (gure 8).
c) The taps of the volumetric meters d must be turned on (gure 9).
Figure 8 Figure 9
3) Open the water supply on-off valve.
4) Lower the lever of a steam tap in order to allow the release of air while lling the boiler with water.
5) Reinstall the tray and cup support grill in its place.
6) Turn the main switch knob to position 1so as to carry out the automatic lling of the boiler with water. In
the NEW 105 Practical models, when water reaches the level probe, lling stops and the green “MAX”
LED of the electronic level control is turned on. In the other models of the NEW 105 series, when water
reaches the level probe, lling stops and the blue “OK” LED of the electronic control is turned on.
Note:
whentheboilerislledwithwater,itmaytakelongerthan150seconds,afterwhichtheautomaticlevelalarm
istriggered(seethechapterondisplayofalarms).Ifthishappens,turnthemainswitchto0(zero)andthen
backto1inordertoperformautomaticllingoftheboileragain(asdescribedinpoint 6).
Topreventtheautomaticlevelalarmfrombeingtriggered,justspeedupautomaticllingoftheboilerusing
themanualllingbuttonf(gure8).
 Themainswitchcanbeturnedtotwopositions(1and 2).Position1starts the electronic auto-
maticlevelfunctiontolltheboilerandexcludestheoperationoftheheatingelements.Position
2startstheheatingelementstoheatthewater.Neverstartthecoffeemachinebyturningthe
main switch to position 2(theelectricalheatingelementsmustalwaysbesubmergedinwaterin
ordertooperate).
5. Adjustments
 Anyadjustmentstothecoffeemachinemustbecarriedoutbyqualiedtechnicalstaffauthorised
byLASANMARCOSPA.
a b f
dd
c

12
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5.1 Adjustment of boiler water level probe
The level probe is normally placed in a standard position for all the models in the NEW 105
series. However, if the customer so desires, the amount of water in the boiler can be increased
or decreased by adjusting the level probe as shown in the gure.
5.2 Adjustment of pump dispensing pressure
In the models in the NEW 105 series, the pump is located inside the coffee machine.
Note:
Anexternalpumpcanbeinstalledonthecoffeemachineuponrequest.
The pump operating pressure is calibrated by LA SAN MARCO SPA at a value of 9 bar. Should you wish to
change this value, proceed as follows:
1) The standard location for the pump is the right side of the machine (looking at it from the work zone). To
access it, the right side must be removed (gure 11).
2) Press the continuous dispensing button to dispense water from one of the dispensing units.
3) On the lower graduated scale of the gauge, read the pump operating pressure.
4) Adjust the pressure using the adjustment screw of the internal pump (gure 11) or in the event of an ex-
ternal pump (gure 12). To increase the pressure, tighten the screw and read the corresponding value on
the lower scale of the gauge. To decrease the pressure, loosen the adjustment screw.
Figure 11 Figure 12
5) Once the desired pressure has been set, stop dispensing water and close the side of the machine.
Note:
Thesuggestedcalibrationofthepumpoperatingpressuretoobtainproperdispensingis9bar.
5.3 Adjustment of steam pressure in boiler
The steam pressure in the boiler is shown on the upper scale of the pressure gauge B(gure 13). The lower grad-
uated scale indicates the operating pressure of the pump. To change the pressure of the liquid-saturated steam
mixture inside the boiler, you will need to vary the temperature as explained in the programming chapter.
Figure 13

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5.4 Temperature adjustment of dispensing units:
In the NEW 105 T models (except for the NEW 105 T DTC models), the espresso coffee dispensing tempera-
ture can be adjusted without changing the internal pressure of the boiler. A valve (ow variator) is tted to the
tip of the dispensing unit, which controls the ow of hot water from the exchangers; this valve is accessible
from the upper tray, after removing the plastic cup support grille (gure 15). Four numbered notches are im-
printed on the upper tray (2, 3, 4, 5) for each dispensing unit (gure 16). The valve is normally set to number 3
(this is the default setting factory set by LA SAN MARCO SPA). If you wish to change the dispensing tempera-
ture, you will need to use the valve (ow variator) on the dispensing unit. To increase the temperature, turn the
valve towards the higher numbers. Contrarily, to decrease it, turn the knob towards lower numbers.
5.5 Additional notes for NEW 105 DTC (Dual Temperature Control) models
The cooling system of the NEW 105 DTC models has the purpose of ensuring thermal stability of the water
used for dispensing espresso coffee. This system uses a special dispensing unit in which the cold water from
the mains passes through a small tube located in a compensation chamber. The hot water from the heat ex-
changer of the boiler passes through the dispensing unit and comes into contact with the cooling tube. As a
result it loses heat.

14
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5.6 Hot water temperature adjustment
The NEW 105 TOUCH models feature a mixer that makes it possible to adjust the temperature of the hot
water for the preparation of infusions. The mixer can be calibrated by turning the adjustment screw, which is
accessed from the upper tray (gure 17). The mixer calibration is factory set by LA SAN MARCO SPA. If you
want to increase the temperature of the hot water drawn, turn the screw clockwise. On the contrary, if you
want to decrease the temperature of the water, turn the screw anti-clockwise.
Note:
Themixermustbeadjustedwiththecoffeemachinerunningundernormaloperatingconditions.Thesteam
pressureintheboileris1.0bar(standardvaluesetbyLASANMARCOSPA).ifthesteampressureintheboiler
ismodied(asdescribedintherelevantparagraph),themixermustbecalibratedagain.
Figure 15 Figure 16 Figure 17
6. Operating instructions
 Duringthedispensingofespressocoffee,teaorsteam,thesecancauseburnsduetoaccidental
skin contact.
6.1 Dispensing espresso coffee
1) Remove the lter cup from the dispensing unit and ll it with a dose of ground coffee (lter cup with one
spout) or with two doses of ground coffee (lter cup with two spouts). Press the ground coffee using the
relevant coffee press and then insert the lter cup into the dispensing unit.
2) Place one or two cups under the dispensing spout.
Note:
Makesurethatthecoffeehasbeendispensedintothecupcorrectly;ifnot,seethechapterentitled“TROU-
BLESHOOTING”.
6.2 Drawing steam
A jet of steam, which can be used to foam milk or to heat other liquids, comes out of the steam drawing spout
as follows: by raising or lowering the lever you attain the maximum ow (the lever stops in the maximum po-
sition. To stop the ow of steam, place the lever back in its original position); if you move the lever sideways
you will obtain a reduced steam ow (the lever does not lock in place, and if released, it returns to its original
position).

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 Thesteamermustbeusedwithcare:contactoftheskinwiththesteamspoutorwiththejetof
steamitselfcancauseseriousburns.Griptheburnprotectionsheathtochangethepositionof
thesteamdrawingspout.Neveraimthejetofsteamatpersonsoratobjectswhicharenotcon-
nectedtotheusedescribedinthismanual.
Note:
Beforeusingthesteamdrawingspout,drainanycondensationwhichmayhaveformedwithinitintothetray.
Afterusingthespout,wipeitcleanwithadampcloth,andifnecessarydrainanyresidueremaininginsideit
into the tray.
6.3 Drawing hot water
Hot water is drawn by the appropriate spout and can be used to prepare infusions, tea, camomile tea, to heat
cups, to add water to an espresso and to obtain American-style coffee, and so on.
6.4 Cup heater (optional)
The cup heater is used to increase the heating of the upper cup support surface (by means of an electrical
heating element). Use the appropriate switch to activate or de-activate the cup heater. The cup heater heating
element is equipped with an operating thermostat that controls the temperature of the cup support surface.
7. Programming the New 105 Touch models
7.1 Keys
K1GR1, K1GR2, K1GR3: 1st coffee dose dispensing key Unit 1, 2, 3
K2GR1, K2GR2, K2GR3: 2st coffee dose dispensing key Unit 1, 2, 3
K3GR1, K3GR2, K3GR3: 3st coffee dose dispensing key Unit 1, 2, 3
K4GR1, K4GR2, K4GR3: 4st coffee dose dispensing key Unit 1, 2, 3
K5GR1, K5GR2, K5GR3: Continuous keys Unit 1, 2, 3
K5GR1 Continuous key and programming input Unit 1
K6GR1, K6GR2, K6GR3: Programmed tea dose dispensing key Unit 1, 2, 3
K1GR1K2GR1 K3GR1K4GR1K5GR1K6GR1
DISPLAY
K1GR1K2GR1 K3GR1K4GR1K5GR1K6GR1

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As specied in more detail in the relevant paragraph, some keys in the unit 1 push button panel perform specic
functions (other than dispensing) when the appliance is in programming mode.
KEY ADDITIONAL FUNCTION FUNCTION DESCRIPTION
K1GR1 + (PLUS) Function to "increase" the numerical values or to select default
options related to the parameter being programmed
K2GR1 - (MINUS) Function to "decrease" the numerical values or to select default
options related to the parameter being programmed
K3GR1 ENTER Function to conrm certain operations during programming
K5GR1 MENU Function to select/choose the parameter you wish to program
DOSAGE START
By powering the dosage function on the main external switch, the function returns to the “OFF” or “IDLE-ON”
status it was in before the power was cut off (see “Procedures in the event of a power failure”).
When the dosage function is powered, the display briey indicates the version of the software installed
(x.yy).
The display shows
LA SAN MARCO
REV.X.YY
OFF STATUS (DOSAGE OFF BUT POWERED)
With the dosage function off:
- all the outputs are deactivated
- all the functions are deactivated, except for the TECHNICAL LEVEL programming ones
The display shows
OFF hh:mm
Where hh:mm INDICATE the correct time in hours and minutes
N.B. to switch to the OFF status, press the K5GR1 key followed by K3GR1.
To switch to the IDLE ON status, press the K3GR1 key only.
IDLE ON (ON) STATUS
START-UP
To start the dosage, press the K3GR1 key.
In idle-on status, the dosage detects the status of the level and maximum level probes. If the probe detects
that there is not enough water in the boiler, the same is lled automatically by the activation of the lling sole-
noid valve EVLIV and of the PUMP until the correct level of water is obtained (Filling time-out - see paragraph
entitled ALARMS).
If the correct levels are detected, or after the topping up of the same, the dosage is set for the activation of the
coffee doses selections or for the programming of the same - where required (see subsequent paragraphs).
The dispensing activation does not depend on the attainment of the set-point temperature in the
boiler.
IN IDLE-ON STATUS, ALL THE LEDS ARE ON

17
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The display shows
xxx°C hh:mm
LA SAN MARCO
wherehh = current time in hours (0 ÷ 23)
mm = current time in minutes
LA SAN MARCO = customer's name as desired
STOPPING
To stop the dosage function, keep the K5GR1 key pressed rst, followed immediately by the K3GR1 key.
2°1°
To switch to the IDLE ON status, press the K3GR1 key only.
7.2 Dispensing
COFFEE CYCLE
DISPENSING
In the idle-on status, press one of the four doses keys for the unit you wish to use for dispensing (for example,
K1GRx). Both the dispensing solenoid valve EVx and the PUMP are energised, starting up the dispensing
phase.
Both the pump and the solenoid valve will remain activated until the quantity of product programmed previ-
ously is achieved (volumetric meter pulses).
The LED relating to the chosen dose stays on for the entire duration of coffee dispensing.
K1GRx
The display shows
Espresso
During dispensing, the display shows an indication of the dose dispensed (English version)
1 Espresso
2 Espressos
1 Coffee
2 Coffees
Continuous
Tea
Steam

18
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Note:
The dosage permits the contemporary dispensing of coffee from all the units envisaged by dosage.
STOP DISPENSING COFFEE WHILE IN PROGRESS
It is possible to interrupt dispensing while in progress before the pulses relating to the volumetric meter pro-
grammed are achieved. Simply press the key relating to the dispensing in progress.
This de-energises with immediate effect both the dispensing solenoid valve EVx and the PUMP, suspending
the dispensing and returning the dosage to idle-on status.
PREBREWING
The 3d5 MAESTRO DELUXE dosage function can be congured so that the dispensing relating to the coffee
doses with volumetric control is preceded by prebrewing.
When the dosage function is started, after the time t1(on) the unit solenoid valve EVx is turned off and re-
mains turned off for the amount of time t2(off), except for re-energising to complete the dosage function as
programmed. This timed on/off does not affect the PUMP actuator.
PUMP
EVx
t1 (on) T2 (off) Programmed dose
total duration of dispensing
When one of the dosage keys with volumetric control, the “normal” dispensing cycle is preceded by a brief
timed water jet used to moisten the coffee pod before moving on to the actual dispensing.
 Timest1(on)andt2(off)canbesetinTECHNICALLEVELprogrammingforallcoffeedoses.Ifone
ormoredetailsaresettozero,thisfunctionisnotexecuteddespitebeingactive!
To activate it see TECHNICAL LEVEL Programming.
DISPENSING COFFEE IN CONTINUOUS MODE
In the idle-on status, release one of the doses keys K5GRx (continuous/programming). Both the dispensing
solenoid valve EVx and the PUMP are energised, starting up the dispensing phase. The LED L5GRx relating
to the chosen dose key continues to ash for the entire duration of coffee dispensing.
K5GRx
The display shows
Continuos dose

19
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To interrupt dispensing in continuous mode, stop the dosage by pressing the same key K5GRx . This de-
energises the solenoid valve and the pump, and the signal LED is consequently turned off.
Dispensing in continuous mode stops automatically (if it is not stopped) when the maximum product quantity
is achieved; this quantity can be controlled both in volumetric mode on achievement of 6000 pulses, as well
as by means of a dispensing Time-out (see paragraph entitled ALARMS).
IMPORTANT: THE “CONTINUOUS” CYCLE STARTS WHEN THE K5GRX KEY IS RELEASED (WITHIN 5
SECONDS OTHERWISE THE PROGRAMMING PHASE BEGINS) AND NOT WHEN IT IS PRESSED. IN-
STEAD, DOSAGE STOPS WHEN THE KEY IS PRESSED.
TEA CYCLE
DISPENSING
When the key relating to the Tea dose is pressed (K6GRx), the Tea solenoid valve is activated (EVTEA) and
hot water is dispensed. This operation is indicated by the LED (L6GRx) corresponding to the key pressed
lighting up.
When the cycle starts, a Timer is activated which, once the time value set during the programming phase is
achieved, interrupts product dispensing.
The dosage function permits the contemporary dispensing of Tea and coffee cycles.
K6GRx
The display shows
Tea
Stop dispensing tea while in progress
It is possible to interrupt dispensing while in progress before the programmed amount of time has passed.
Simply press the same key used to start dispensing the tea dose.
This de-energises with immediate effect the solenoid valve EVTEA and interrupts product dispensing and
returning the dosage to idle-on status.
The control unit is designed to manage three different tea doses
(oneperunit).
TEA + PUMP
Tea dispensing can be combined with the pump.
See TECHNICAL LEVEL Programming.
AUTOSTEAM SPOUT DISPENSING CYCLE
This function and the keyboard dedicated to perform it is activated in TECHNICAL LEVEL Programming (see
relevant paragraph)

20
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Thanks to a temperature probe suitably positioned on the steam spout and connected to the STLVAP input,
the temperature of the liquid heated by the steam is measured.
So by pressing the AUTOSTEAM key in position K6GRx key the EVVAP is activated until the temperature set
in the Programming for Simulation is reached (see paragraph below).
The display shows
Steam
It can nonetheless be interrupted early by pressing the steam key again.
Steam can continue to be dispensed when the temperature programmed is reached, by keeping the steam
key pressed.
If the temperature is not reached within a time-out of 120 seconds, steam dispensing ends automatically.
The system permits the contemporary dispensing of coffee, tea and steam.
If two or more of these are dispensed concurrently, the display shows the related indications alternately.
LEVEL PROBE
When powered, the dosage function detects the status of the level probe situated in the boiler and, if neces-
sary (water shortage), it arranges for the lling phase to be performed by energising the lling solenoid valve
EVLIV and the PUMP until the boiler contains the right amount of water.
(programmable Time-out envisaged on the lling phase - see TECHNICAL LEVEL Programming)
 When the system is started, the level check and adjustment is enabled after approximately 6
seconds.
Every time the level probe situated in the boiler fails to detect the presence of liquid for 3 seconds, the lling
phase is started by energising the lling solenoid valve EVLIV and the PUMP. When the probe detects the
presence of water for 3 consecutive seconds again, the lling phase stops by de-energising the lling sole-
noid valve EVLIV and the PUMP.
BOILER LEVEL KO EVLIV + PUMP = ON
SLIVMin = operating probe
SLIV = operating probe
EVLIV
SLIV
SLIVMin
POMPA
BOILER LEVEL OK EVLIV + PUMP = OFF
EVLIV
SLIV
SLIVMin
POMPA
The filling phase does not affect the possibility of performing both coffee or tea selections and a new
programming of the same. Only the triggering of the Time-out combined with the filling phase inhibits
the functioning of the keyboard and actuators.
PUMP
PUMP