Conti MC ULTIMA Guide

TECHNICAL DOCUMENTATION
Edition 05/2021
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MC ULTIMA

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Index page
1TECHNICAL DOCUMENTS................................................................................... 3
2DIMENSIONS ........................................................................................................ 3
3CAUTION DURING THE USE ............................................................................... 4
4INSTALLATION...................................................................................................... 5
5FIRST INSTALLATION.......................................................................................... 7
6STARTING & WARM UP ..................................................................................... 12
7HOW TO USE THE MACHINE ............................................................................ 15
8COFFEE GROUPS.............................................................................................. 17
9PROGRAMMING DOSES METHODOLOGY ...................................................... 20
10 GENERAL DISPLAY............................................................................................ 22
11 COFFEE TEMPERATURE ADJUSTMENTS....................................................... 50
12 QUALITY CRITERIA............................................................................................ 51
13 MAINTENANCE OF MACHINES......................................................................... 52
14 ELECTRIC DRAWING......................................................................................... 55
15 HYDRAULIC SCHEME........................................................................................ 61
16 ALARM................................................................................................................. 63
17 POWER MANAGEMENT..................................................................................... 65

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1 TECHNICAL DOCUMENTS
Steam boiler
Coffee boiler
Group
Outlet
Total
power
Capacity
(liter)
Power
(W)
Capacity
(liter)
Number
Power
(W)
Number
Power
(W)
Power
(W)
(W)
2G
10
4200
0,9
2
1000
2
100
300
6700
3G
14
6000
0,9
3
1000
3
100
300
9600
BOILER CAPACITY (IN LITERS)
2 Groups
3 Groups
TOTAL
10
14
Hot water volume
6,5
10
Steam volume
3,5
4
Coffee boiler volume
2 x 0.9
3 x 0.9
WEIGHT EMPTY
(Kg)
Weight
in operation (Kg)
2G
89
99
3G
103
117
2 DIMENSIONS
Cup warmer capacity: (88 espressos cups) or (56 espressos cups + 18 cappuccino cups)

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3 CAUTION DURING THE USE
3.1 Ambient conditions
The ambient temperature around the machine had to be between 5°C and 32°C.
The ambient humidity must not exceed 70 %
The machine must be placed such as the cup warmer is located more than 1.5 meters from the
ground.
3.2 During installation
The installation (electrical connections, water supply and drainage) must be carried out by a
qualified technician approved by CONTI.
The machine must be connected to a device conforming to the standards of the country where
the machine is installed. Potential costs of equipment compliance are the only responsibility of
the customer.
For any technical intervention, the machines must always have the power disconnected from
the mains.
An effective earth connected to the terminal provided for this purpose on the device is
mandatory
A screw located under the bottom base machine, allow if necessary, to connect several
machines on an equipotential way.
Devices for disconnection from the main supply, having a contact separation of at least 3mm in
all poles, must be provided in the fixed wiring in accordance with the installation rules.
3.3 During the use
When the machine is not operating, the water cut-off valve must be closed and the electrical
power supply cut.
When the machine is not supervised it must be disconnected from the power and water supply.
Never disconnect the earthing when the machine is connected to the power supply.
Machines must always be disconnected from the main power, in case of technical interventions.
b) We guarantee our machines subject to a correctly sized water treatment is installed backward
and adjusted according to the carbonate hardness of the water network.
3.4 Rules relating to the environment
This device has been designed according to the European Directive No. 2002/95/EC. This refers
to the restriction of certain hazardous substances in electrical and electronic equipment (ROHS)
This device has been designed in compliance with the European Directive No. 2002/96/EC
concerning waste electrical equipment (WEEE).
This picture informs you that this device should not be discarded with household waste.
At end of life, this product must be returned to a collection point or returned to an authorized
dealer. By doing so, you will help to protect the environment and human health.

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4 INSTALLATION
4.1 Standby (standby = 2 months):
The first thing to do is to test your machine in a lab.
If the machine stops running for a long time, you could have sediment in some places.
More precisely in small area like the spray nozzle.
4.2 Protections
It is necessary to place before the machine:
oA water shut off valve.
oAn electrical protection standard, suitable for voltage and power consumption.
4.3 Water supply
Recommended operating pressure from 0,15 MPa to 0,6 MPa
Water connection pin 3/8"
The water supply pipes must resist to 145 Psi / 1 MPa
4.4 Drain
Without pressure.
A tip on the outlet of the machine and a pipe is supplied with the machine
Ensure a connection that causes no risk of fluid return, and ensure good drainage:
The drainpipe must be located lower than the machine.
Do not create a bend in the exhaust tube.
4.5 Supplying voltage
To be specify when ordering: 230V –50/60Hz Monofase
Or: 400V –50/60Hz Trifase

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4.6 Water softeners
When the mains water has a high hardness (>10°TH ou >4 °KH), it is recommended:
oTo use a water treatment
oTo regenerate regularly the filters.
What is the total Hardness of the water?
oThis is the amount of calcium and magnesium ions in the water.
oThese ions are partly responsible for limestone formation.
oIt is measured with the test strip provided with the machine.
oThe unit of measurement is the ° French (° TH) or the ° German (° dH).
What is the Karbonat Hardness of the water?
oThis is the amount of Carbonate Calcium ions and Carbonate Magnesium ions in the water.
oThese ions are completely responsible for limestone formation.
oIt is measured with chemical dropper testers.
oThe unit of measurement is ° Carbonate (°KH)
There are 2 types of water treatments:
Saltwater softeners
oThey treat the total water hardness (°TH)
oBy an exchange of sodium ions with calcium and magnesium ions.
oThey require periodic regeneration of the resins by the user.
oTo use when the water hardness is > à 10°TH or > 5 °GH
Resins filters:
oThey treat the Carbonat hardness water (°KH)
oBy fixing carbonate ions on the resins.
oOften fitted with microfiltration and carbon filtration.
oTo use when the Carbonat Hardness is > à 6°KH
oHighly recommended by the manufacturer:
The machines are equipped with suitable protection in accordance with flowrate
and the water encountered.
The changing cartridges is carried out by the technical service, at intervals to be
determined

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5 FIRST INSTALLATION
A. Open the water supply tap
B.
C. Switch on the machine using the ON/OFF switch under the drip tray.
D. After few second, the main display shows:
E. According to the situation, the machine may have stayed in the “activated” mode just before
switching off, in this case the display shows:
The groups are switched on and the machine begins to fill up.
Switch ON/OFF
Then

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Press anywhere on the display for 2 sec to interrupt the process:
A. The machine turns back to the “stand by” mode
The coffee groups are switched OFF
B. Enter in programming menu to access to the 1st installation:
Press the button for 3 seconds:
The display shows:
Press the button to enter the password:

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The display shows :
You have 8 seconds to enter the password 1956
C. The logo is activated “green” and you have access to the full menu :
Press on to follow the machine installation steps :
The display shows :
Launch the process pressing on 1ère installation button :

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The display shows:
Press on to confirm :
Then on to validate and start the 1st installation process:
The display shows :
Let the machine doing the 1° installation.
During this time, the air inside coffee groups is automatically vacuum by an opening cycle of purge valves,
pump and groups valves.

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D. The process is completed when the display shows again:
Press the button to come back to the main menu
Press the button to come back to the « stand-by » mode of the machine
The display shows :

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6 STARTING & WARM UP
A. Switch ON the machine by pressing the button on the main display.
B. The machine starts up :
Steam boiler filling id activated (with or without the pump according to the configuration)
The keypads turn on
The group displays show the temperature of the coffee boilers.
C. When the steam boiler filing is completed:
The coffee boilers start to heat up.
The coffee buttons are blinking
The steam boiler heating is started at the same time (according to the power level
configuration).
D. When the coffee boilers reach the programmed temperature (generally 90°C in 3 minutes) :
The coffee boiler purge is launched automatically
The coffee buttons remain lighting

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Note: A "customer" logo may appear on the main display during the process
Just press the screen for 2 seconds to return to normal mode:
Then the display shows again:
E. When the steam boiler temperature reaches the programmed value (ex :123°C)
The hot water button lights on.
The machine is ready.
2 sec

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F. Main display
The main display shows the following information’s :
Press anywhere on the display for 3 seconds to put the machine in “standby” mode
The display shows :
Manometer M2
Pump & Network pressure
(Bar)
Manometer M1
Steam boiler pressure
(Bar)
Data related to the last
extraction carried out on
group 1
Data related to the last
extraction carried out on
group 2

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7 HOW TO USE THE MACHINE
7.1 Operating elements
STEAM FUNCTION
Two steams tap levers « V » are provided to allow:
The heating of liquids by spraying steam.
The milk foam production to create Cappuccino or Macchiato.
The liquid to be heated should preferably be placed in a deep container.
The tip of the steam wand outlet must be immersed in the liquid, without touching the bottom of the
container.
The steam may also be used to sterilize and warm glasses.
After each use and absolutely after heating milk, always clean the stainless steel steam nozzle and the
outlet nozzles with a damp cloth, removing all traces present.
A rinsing of the steam lance inner holes is to be done by a short pulse on the lever downwards to release a
jet of steam.
HOT WATER FUNCTION
One electric tap “E” are provided for preparing tea, grog, etc.
Be careful, not to be burnt by the pressure water spray.
For that, the valve is coupled to cold water mixing for adjusting the water T° for tea and avoids spitting hot
water.
FILTERS
The machine is equipped with two types of filters: 1 cup (10 G) and 2 cups (18 G)
Each filter is operating with its own holder-filter to produce respectively 1 cup or 2 cups of coffee.
Filters need to be unclogged and clean, so they need to be cleaned almost once a day with hot water, by
being removed from the holder filters.
Take care to remove all residual traces of coffee and ensure proper cleanliness of perforations in the bottom
of the filter.

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FILTER-HOLDER
Never remove the filter-holder during operation of the group. The shutdown is controllable with coffee
spouts: they no longer eject liquid.
Be careful to always keep the filter-holder engaged in the group, emptied of coffee cake, to keep them
warm.
In case of an extended stopping period, remove the filter-holder from the group, taking care to eject the
used grounds remain in the filter-holder.
Tighten the filter-holder until to be in contact with the seal, exceeding a little bit. The sealing is guaranteed.
Do not unnecessarily try to crush the seal by tightening the filter at the maximum of your possibilities. It may
damage the seal prematurely.
To empty the coffee filters used, turn the filter holder upside-down and lightly tap it on the edge of a
wooden box. Never strike it against metal or other hard objects.
DIGITAL MANOMETER M1 : BOILER PRESSURE
The boiler pressure is adjusted in factory between 0,08 MPa (12 PSI) and 0,1 MPa (15 PSI). This value varies
slightly around its nominal temperature, due to the PID system which controls the heating and limits the
current consumption to its minimum.
Factory settings: 1, 2 MPa with setting range from 0,08 MPa to 0,14 MPa.
NOTE: An over-heating thermostat cut the power on the general relay, in case of an abnormal high
temperature. The machine is not anymore supplied.
DIGITAL MANOMETER M2: PUMP PRESSURE
The pump pressure is adjusted at 0,9 MPa in the factory. Value which allows the best extraction of coffee
flavors. A bypass system evacuates over-pressure.
NOTE: Simultaneous operation of all the groups can impact a little bit the pressure level.
Visualization of the presence of water network is done by consulting the gauge
7.2 How to use the programmed doses
Simply select one of the buttons available on each keypad to obtain the doses or the programmed
drinks.
The selected dose is shown by a blinking led on the keypad.
The flow can be stopped by repressing:
oThe same button or
oThe STOP button (which is also the programming and continuous flow button).

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8 COFFEE GROUPS
8.1 Mode menu
Press the "Menu/Enter" button to enter in the programming mode.
The "Esc" button is used to escape from the programming mode.
MENU/ENTER - +
Esc
Coffee boiler T°
Group temperature
MENU A
Soft-infusion
Dose setting
MENU C
Counters
MENU E
NORMAL MODE
ESC
ESC
ESC
ESC
ESC
-+
MENU D
"MENU"
-+
-+
-+
MENU B
95°C

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A) COFFEE BOILER TEMPERATURE
B) GROUP TEMPERATURE
C) DOSE SETTING
Coffee boiler T°
95°C
ENTER
+
-
Coffee boiler T°
Coffee boiler T°
94°C
ESC
Press "menu" to validate and "ESC" to escape
Group temperature
88°C
ENTER
+
-
Group temperature
Group temperature
89°C
Dose setting
ENTER
Dose setting
ESC
All the leds are OFF
It is enough to program the left group so that both
groups are configured in the same way.
Do the dose and stop at the desired volume.
When the dose is programmed the led button
remain lighting
Do the same for the other buttons
The continuous is not programmable.
The hot water button (close to the keyboard)
is programmable like the coffee dose.
Press "menu" to validate and "ESC" to escape
PRESS "MENU"to validate and "ESC" to escape
ESC

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D) SOFT-INFUSION
E) COUNTERS
8.2 Group eco mode
If you press on the "ECO" button of one group, you enter in the "ECO" mode: the coffee boiler switches off.
The group is disabled but the group head is maintained at temperature. The other groups remain
functioning. Press again on the "ECO" button to enable the group.
8.3 Clean button
If you press on the "CLEAN" button of one group, a cleaning cycle starts.
Prepare the blind filter holder and cleaning tablet
Put it on the group head
Press the "CLEAN" button
The machine starts the cleaning cycle without any special indication.
A bar graph indicates the cleaning progress.
Espresso
10
ENTER
+
-
Counters
Other button
xx
Press "menu" to reset the counters
ESC
Soft-Infusion
Espresso 3.0 sec
+
-
Soft-infusion
« Menu » to validate and go to next step
« ESC » to escape
To adjust the closing time of the soft-infusion valve
Soft-Infusion
2 Espresso 3.0 sec
MENU
+
-
ESC
Programming a closing time of the coffee circuit during the extraction beginning.
During that time a low pression is applied on the coffee grounds.
EXTRACTION
Soft
Time
MENU
To adjust the closing time of the soft-infusion valve

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9 PROGRAMMING DOSES METHODOLOGY
9.1 Coffee doses programming:
MENU/ENTER - +
Esc
2 ways of programming are possible to set the coffee dose.
Choose 1st group (on the left when the user is in front of the machine)
oTo program all groups at the same time with the same value.
oThe programmed key will have its equivalent key programmed identically on the other
groups
Choose each group separately, if they the groups need to have different value.
Methodology:
Put the ground coffee (1 dose or 2 doses according to the programmed key), in the suitable filter holder.
Press the “MENU” key: the display show “Coffee boiler T”
Press 2 times the “+” key: the display shows “Doses setting”
Press the “MENU” key: the display shows:
The button to be programmed are not lighting.
Press the key to be programmed to start the flow and press again when water quantity is correct.
The value is directly registered
The programmed key remains “On”
Then, keep programming the next key, and so on for the other keys.
Note: On the factory, each machine undergoes a test protocol on which a program has already been
completed, according to the following settings:
1 espresso = 2.5 cl / 2 espressos = 5 cl / 1 coffee = 4,5 cl / 2 coffee = 9 cl
Doses setting
XX s YY ml
95°C