english
Summar
y
Summary
1.
TECHNICAL FEATURES................................................... 22
2.
DESCRIPTION OF THE INTERNAL COMPONENTS ..... 23
3.
GETTING THE MACHINE READY ................................... 23
4.
INSTALLATION .................................................................. 25
5.
BOILER .............................................................................. 27
6.
EXCHANGERS .................................................................. 27
7.
DISPENSER UNIT............................................................. 28
8.
INTERNAL SYSTEMS ........................................................ 28
9.
CAPPUCCINO
10.
CLEANING ......................................................................... 32
11.
CHECKS AND MAINTENANCE ........................................ 34
12.
LIST OF RISKS ................................................................. 35
13.
TROUBLE SHOOTING ...................................................... 36
14.
WIRING
15.
HYDRAULIC
MAKER ..................................................... 31
DIAGRAMS ........................................................ 94
DIAGRAMS .................................................. 116
21
ENGLISH
1. TECHNICAL FEATURES
H
W
D
fig.1
Version
1 Unit
2 Units
3 Units
Width W (cm)
50
70
94
Depth D (cm)
57
57
57
Height H (cm)
52
52
52
Boiler capacity (L)
6
10.5
17
Supply voltage (V)
110/230/240/400
110/230/240/400
230/240/400
2000
2600
3700
Absorbed power (W)
Boiler working pressure(bar)
1 - 1.2
Safety valve calibration (bar)
2
Supply water pressure(bar)
Coffee dispensing pressure(bar)
22
1.5 - 5
8-9
tab.1
ENGLISH
2.
1.
2.
3.
4.
5.
6.
7.
8.
DESCRIPTION OF THE INTERNAL COMPONENTS
Boiler
Dispensing units
Optical boiler level
Boiler and pump pressure gauge
Drainage tray
Machine ON switch
Pressure switch
Cappuccino maker
9.
10.
11.
12.
13.
14.
15.
Electric pump
Refrigerator
Volumetric doser
Fridge/cappuccino maker power supply
Fridge thermostat
Manual water inlet valve
Water coupling for built-in motor
9
1
fig.2
2
7
6
3
15
10
14
8
13
11
5
12
4
3. GETTING THE MACHINE READY
3.1 UNPACKING (fig.3)
Open the packing trying not to damage it.
Remove the sheets protecting the machine and
the parts inside the packing.
Remove the machine.
In the case of an external electric pump both the
motor and pump are supplied in a separate packing.
fig.3
23
ENGLISH
3.2 POSITIONING THE MACHINE (fig.4)
First of all prepare a comfortable place
to stand the machine on that can carry
its weight (1); it’s important that all the
ends of the connections to the water
mains (2) and electricity mains (3) are
handy and in all cases in the immediate
vicinity of the machine.
Make sure there is plenty of room for
the machine and for its correct use.
The grinder-doser must be placed in the
immediate vicinity of the coffee maker
so using it is simpler.
3
2
1
4
fig.4
ATTENTION
If the machine is to work properly it must stand on a perfectly level base. If it needs aligning simply turn the feet
(4).
3.3 GETTING THE PARTS READY
External electric pump (fig.5)
The pump and motor have to be prepared for machines that have an external motor.
Fit the 3/8 Gas fitting with filter (2) and the ordinary 3/8 Gas fitting (1) on the pump.
Go careful: the fitting with filter (2) must be fitted on the pump inlet.
Use the washers (3) provided.
Install the pump on the motor making sure they are perfectly aligned. An inadequate coupling could lead to trouble like
quick wearing of the movable parts, hydraulic leaks or vibrations.
Filter holder (fig.6)
Take the filter holder (4), a filter stop spring (5) and put it in place on the filter holder. Take the filter (6) or (7) and push it with
force into the filter holder.
Spouts (fig.6)
Complete the filter holder by fitting the spout (8) or (9).
Attention: fit the spout on its relative filter holder: one-cup spout on the filter holder with a 1-cup filter, etc...
Softener
It is a standard feature.
7
1
6
2
5
3
4
3
fig.5
24
8
9
fig.6
ENGLISH
4. INSTALLATION
4.1 HYDRAULIC CONNECTION (fig.7)
The softener provided with the machine is designed to work at a pressure ranging between 1 and 8 bar. Only cold drinking
water (for human consumption) must be used! There must be a cock on the connection
to the water mains so the water supply can be shut off to the appliance.
M
To prevent the water inside from freezing, we advise installing the softener on premises
VS
where environmental temperature is higher than 0°C.
ATTENTION
So as not to damage the outer casing, valves or cocks, install the softener in a
place protected against accidental knocks.
E
Before connecting the pipes, remove any rubber plugs that may have been put in the
softener’s cock couplings.
To connect proceed as follows:
1) connect the water mains (A) on the softener input (E) using the flexible hose provided;
2) rinse the resins of the softener making sure the water, that is initially yellowy, is of a
transparent colour;
3) connect the softener’s output (U) to the machine (M); in the case of an external
electric pump, install it (MP) between the softener’s output and machine input;
4) connect the machine’s tray (VS) to the drain (S) with the pipe provided, avoiding sharp
curves or throttlings and keeping it slanted enough to let the drain water flow away;
5) the drain must be connected to an inspectionable trap that can be cleaned periodically
so as to avoid the return of bad odours.
ATTENTON
When connecting to the water mains do not use iron or galvanised iron fittings
because, with the passing of time, they can corrode and seriously damage the
machine.
S
U
A
fig.7a - internal pump
M
VS
E
MP
S
U
A
fig.7b - external pump
To keep the softener in perfect working order, and consequently the coffee maker, periodical regeneration is necessary
according to how much the softener is used and water hardness.
Table 2, referring to the 12-litre softener, gives the quantities of softened water in relation to the hardness of the water
expressed in the various units of measure:
- F°: French degree
- D°: German degree
- ppm: part per million
tab.2
QUANTITY OF WATER SOFTENED ACCORDING TO HARDNESS
F°
30°
40°
60°
80°
D°
16.5°
22°
33°
44°
ppm
289
385
578
770
quantity of
w ater
softened
1,900 l
1,500 l
1,350 l
1,050 l
SALT
1.5 kg
For more details on how to install, start up and regenerate the softener, please consult the relative instruction manual.
25
ENGLISH
4.2. ELECTRICAL CONNECTION
Proceed as follows:
• open the water cock on the water mains (1)
and on the softener;
• remove the steel drainage tray, pulling it
towards yourself;
• fill the boiler up by hand with the relative lever
(2) and check how much water there is on the
optical level (it should be above minimum) so
as to prevent the heating element from
overheating;
• (only for the external electric pump): connect
the motor’s power cable (the smaller diameter
one) that comes out of the coffee maker to
the pump;
• connect the cable with the bigger diameter
that comes out of the coffee maker to the
electricity mains following the wiring diagram
indicated in the chapter “Wiring diagrams”;
• we advise installing a general circuit breaker
in between for protection (3).
3
2
1
fig.8
The coffee maker is now ready to switch on.
ATTENTION
Disconnect mains power when making the electrical connection.
NOTE
All machines are fitted with a device that limits loading time of the water in the boiler to a maximum of 2 minutes.
This makes sure water cannot come through the boiler’s valve (flooding) and prevents the electric pump from
overheating.
If this maximum time is not enough to finish filling the boiler (3 units), turn the coffee maker off and then back on
and repeat the operations described above.
4.3 TURNING THE COFFEE MAKER ON AND ADJUSTING THE PUMP (fig.9)
Switch the mains on and the coffee machine’s main switch.
Adjust the pump as follows:
• switch the coffee dispenser on;
• adjust the screw on the pump (1) until a pressure of between 8 and 9 bar
is reached (see gauge);
• switch the dispenser off.
1
From the moment it is turned on, the coffee maker will take about 20
minutes to reach pressure. While it is warming up steam will come through
the anti-vacuum valve for a few seconds until it closes.
Pressure of the machine when it is working is about 1 - 1.2 bar.
Last things to do
We advise you do the following;
• let the dispensers with the filter holders hooked in position work empty
for a few seconds so that any air left inside the circuit can escape and to
give the dispenser units the time to warm up completely;
• make a few cups of coffee to test grinding and check pressure which
should be between 8 and 9 bar.
fig.9
26
ENGLISH
5. BOILER (fig.10)
The boiler is made in copper sheet (1) to which the heat exchangers are assembled which, in turn, are connected to the
dispensing unit. It is the heat exchanger that takes the water to make coffee. While coffee is being dispensed, the electric
pump sends cold water to the exchanger. This cold water is mixed with the hot water already inside the exchanger, to have
water at just the right temperature to make coffee.
The water is heated inside the boiler by an immersed electric heating element (2).
1 GROUP
2 - 3 GROUPS
1
1
2
2
fig.10
6. EXCHANGERS (fig.11)
The heat exchangers make it possible to heat the water to have a perfect cup of espresso coffee. Their job is to produce an
exchange of thermal energy between the water inside the boiler and the water inside the exchanger.
The dispensing units are heated with a radiator system by means of tubes connected to the heat exchangers.
The same recycled water is used to make coffee to guarantee the same temperature for all the cups of coffee.
It is important to guarantee system efficiency by keeping the circuit clean at all times by the constant regeneration of the
softener.
The heat exchangers can be replaced proceeding as follows:
• switch the coffee maker off and empty the water circuits completely of water and steam;
• remove the fridge (if there is one);
• remove the flange from the boiler and unscrew the nuts that are keeping the exchanger fixed to the boiler;
• extract the exchanger and put a new one in its place;
• proceed in the reverse order to put everything back, making sure you change the gaskets as well.
fig.11
27
ENGLISH
2
7. DISPENSING UNIT
(fig.12)
When you select dispensing of one dose of coffee you activate:
• the solenoid valve (1) that lets water flow into the coffee;
• the pump that raises pressure of the flowing water between 8
and 9 bar.
The flow reducer (2) and injector (3) are important components if
the dispensing unit is to work properly.
1
3
fig.12
8. INTERNAL SYSTEMS
8.1 Automatic water inlet (fig.13 - fig.14)
The automatic water inlet controls boiler level. It consists of
a stainless steel rod probe inserted in the boiler;
• an electronic level regulator;
• a hydraulic circuit with a regulator controlled solenoid valve.
The electronic unit controls water level inside the boiler. When the
level drops, interrupting contact with the probe, the electronic unit
sends an impulse to the inlet solenoid valve and to the electric
pump so that water in the boiler can be brought back up to the
level.
fig.13 - 1 unit
ATTENTION
Always keep an eye on the quantity of water in the boiler
through the optical level which is on the front panel of the
coffee maker.
1
fig.14 - 2/3 units
8.2 VOLUMETRIC DOSER (fig.15)
The volumetric doser installed on electronic coffee makers
measures the quantity of water sent to the unit to make a cup of
espresso coffee. It generates an electric impulse that is sent to
the electronic control unit. This impulse is read by the unit and
stored while programming the dose. Each flash of the LED (1) on
the volumetric doser means an impulse that the doser sends to
the unit.
fig.15
28
ENGLISH
8.3 VALVE UNIT
The valves are devices that guarantee safety and correct machine operation. Let’s look at them
in detail:
fig.16
Anti-vacuum valve (fig.16)
This valve’s task is to avoid the return of liquids through the steam nozzle while they are being
heated. It also eliminates any air from inside the boiler while the coffee maker is warming up.
Pressure limiting valve (fig.17)
This valve guarantees that pressure inside the boiler does not exceed 2 bar. Should this valve
fail its capacity is such to eliminate all excess pressure in the boiler.
fig.17
Blowdown-check valve (fig.18)
This valve consists of an expansion valve and a check valve.
• expansion valve: the cold water the pump sends to the exchangers heats up. This heating
causes an increase in the volume of water. To limit pressure rising in the water circuit the
valve maintains a maximum pressure of 12 bar inside the circuit.
• check valve: its function is to prevent water flowing back into the water circuit from the
exchangers.
fig.18
8.4 ANTIFLOOD DEVICE (fig.19)
fig.19
Thanks to the cover installed on the pressure limiting valve any
water that may have come out of the boiler, for any reason, can
be collected and sent to the drainage tray through the relative
pipe
8.5 PUMPING SYSTEM (fig.20)
Its task is to feed the coffee maker, raising water pressure to
8-9 bar to make coffee and automatically fill the boiler.
8.6 CONTROLLING BOILER PRESSURE (fig.21)
fig.20
Its job is to turn the electric heating elements on or off
according to the pressure reached inside the boiler.
Adjustment pressure can vary from a minimum of 0.5 bar to
a maximum of 1.4 bar.
1
ATTENTION
The contacts inside the machine are subject to corrosion. We recommend
cleaning them periodically with a corrosion-proof spray.
The pressure switch must be calibrated when the coffee maker is working,
adjusting pressure with the relative screw on the component (1).
fig.21
29
ENGLISH
8.7 ELECTRONIC CONTROL UNIT (fig.22)
fig.22
The electronic control unit is installed on machines with a volumetric doser. Its job is
to electronically control the dose of coffee and hot water and the filling up with water.
This control unit can be connected, with interfacing, to dispensing counter systems.
8.8 ELECTRONIC PUSH BUTTON PANEL (fig.23)
The push button panel is the electronic component connected to the control unit and
is used to select and programme coffee doses. Programming is done following the
instructions given in the user’s manual.
fig.23
8.9 LEVEL REGULATION OF WATER IN THE BOILER (fig.24)
The level regulator, consisting of an electronic control unit, is installed on semi-automatic
coffee makers and controls boiler water level. When the level of water inside the boiler
drops, interrupting contact with the probe, the control unit sends an impulse to the
inlet solenoid valve and electric pump to restore water level.
fig.24
8.10 REFRIGERATOR AND POWER SUPPLY (fig.25 - fig.26 - fig.27)
The refrigerator inside the coffee maker works with Peltier cells powered with low voltage direct current generated by a
power supply located at the back of the machine.
A thermostat bulb inside the fridge controls its temperature which is adjusted with the device under the drainage tray. It
must be adjusted based on outside temperature to keep the milk in the fridge at a temperature of about 4°C.
A fan at the bottom of the fridge cools the Peltier cells. An automatically resettable safety thermostat, set at a temperature of 60°C, is installed on the cooling fins. Should this thermostat trigger, the Peltier cells are stopped until working
temperature is restored.
fig.25
fig.26
30
fig.27
ENGLISH
9. CAPPUCCINO MAKER
GENERAL ILLUSTRATION (fig.28)
11
3
13
4
fig.28
5
12
6
2
1
7
8
10
1
2
3
4
5
6
7
8
9
10
11
12
13
Guide pins
Release key
Safety microswitch
Air nozzle
Hot milk fitting
Whipped milk fitting
Cappuccino maker lid
Cappuccino maker
Cappuccino maker outlet
Injectors
Milk hose fitting
Height adjustment ring nut
Steel nozzles
9
4
5
HOW THE CAPPUCCINO MAKER WORKS (fig.29)
Whipped hot milk
turn knob (1) to the left which triggers the
microswitch (2) that activates the solenoid valve
(4) so that steam can reach the cappuccino maker.
Hot milk
turn knob (1) to the right which triggers the
microswitch (3) that activates the solenoid valve
(5) so that steam can reach the cappuccino maker.
3
If you put the knob (1) back in the zero position
all residual milk will be emptied from the pipes.
1
2
fig.29
31
ENGLISH
10. CLEANING
A few simple cleaning operations of the functional parts, accessories and body panels are all that’s needed to keep the
coffee maker perfectly efficient and hygienic.
Cleaning filters and filter holders (fig.30)
The filters and filter holders must be cleaned daily with hot water. The best thing
is to leave them to soak in hot water over night which will give coffee fat deposits
time to dissolve.
It is advisable to add a sachet or tab of specific detergent to the water and then
rinse well with clean water.
fig.30
Cleaning the steam nozzles
The steam nozzles must be kept clean at all times. Once a month check the tips and clean them, unclogging the holes
with a small needle.
Cleaning the units
The internal parts of the dispensing units must be cleaned once a week as follows:
• substitute the normal filter of the filter holder with a blind one;
• put the specific detergent in the blind filter and hook the filter holder to the unit;
• switch the dispenser on, making the unit work;
• repeat this operation several times until perfectly clean water comes through the drain;
• turn the dispenser off and remove the filter holder from the unit;
• rinse one last time to remove all soap residuals.
Cleaning the body
Clean the body panels with a cloth and warm water. Do not use abrasive detergents as they could ruin the panels.
Grinder-doser
Once a week clean the outside and inside of the hopper and doser with a cloth and warm water.
Refrigerator
Clean the refrigerator once a day with a damp, disinfected cloth.
Once a week check the cooling fan, cleaning it if necessary.
32
ENGLISH
CLEANING THE CAPPUCCINO MAKER
Each evening
1. Substitute the milk receptacle in the fridge with one containing 300 ml of hot water
and 30 ml of a special detergent for cappuccino makers see fig.31 (do not use soda
or other detergents).
2.
Rinse the pipes with this mixture of detergent and
water switching the cappuccino maker on (turn the
knob to the right or left several times).
0
0
fig.31
3.
Fill the receptacle in the refrigerator with 400 ml of cold water and rinse the cappuccino maker making sure that all the
detergent has been removed from inside the milk compartment.
fig.32
4.
Remove the cappuccino maker and clean
all the components thoroughly (fig.32). Dip
the components in a mixture of 400 ml of
warm water and 40 ml of the special
detergent and leave them to soak for one
hour. Rinse all parts with hot water.
5.
It’s possible that some milk can get in
between the various parts of the
mechanism when you’re using the cappuccino maker. Clean the whole
mechanism with the special brush
provided (fig.33).
fig.33
6.
Reassemble the cappuccino maker and put it back in position.
7.
Remove the milk receptacle and clean the inside of the refrigerator. Put the receptacle back. Whenever
the machine is not being used, or over night, we suggest removing the milk receptacle and turning
the switch round to position 1 to switch the refrigerator off.
0
1
2
Weekly cleaning
Check all the pipes and clean the various components if necessary with the bristle brush available in the accessories.
ATTENTION
Regularly clean the heatsink of the fridge so it remains free of dust.
Cleaning during the day (fig.34)
We advise cleaning the cappuccino maker at the beginning of the day or
whenever it has not been used for more than an hour. Remove all residuals
of condensed milk fat from inside pipes.
Turn the cappuccino maker’s knob to the right and left several times so that
the steam cleans it. Then turn the knob back into position 0.
0
0
fig.34
33
ENGLISH
11. CHECKS AND MAINTENANCE
To ensure perfect efficiency and safety of the machine over time, routine, preventive and
extraordinary maintenance jobs are necessary.
Machine
• Carry out the daily cleaning jobs described in chapter 10;
• Every 6 months change the filter and undercup seal on the dispensing unit (use original
spare parts only!) proceeding as follows:
- unscrew screw (1);
- remove and replace the filter unit (2) and the rubber undercup seal (3);
- reassemble the components.
• At least once a year check that the anti-vacuum, pressure limiter and blowdown-check
valves are all working properly. In the case of malfunctions they must be replaced. For
the checks proceed as follows:
fig.35
3
2
1
1
anti-vacuum valve
- Switch the machine off;
- using the steam cocks, let off all the pressure inside the boiler;
- switch the machine back on and check the valve is shut.
pressure limiting valve
- Lock the pressure switch contacts;
- wait for the pressure to rise inside the boiler and see that the valve triggers at the maximum
pressure of 2 bar.
2
fig.36
•
•
•
blowdown-check limiting valve
- Switch the dispensing units on for about 30 seconds;
- hook a filter holder with gauge to the dispensing unit (1) (available on request);
- switch the dispensing unit on checking the increase in pressure on the gauge (2) up to 8 9 bar;
- check the increase in pressure due to the expansion effect of the heated water, up to a value
of approximately 12 bar: when this value is reached it means the valve and both the seals
and solenoid valves are working properly;
- switch the dispensing unit off;
- repeat this check on the other dispensing units.
Check regularly the pressure of water during coffee dispensing: check the pressure shown on the gauge which should
be between 8 and 9 bar;
Keep boiler pressure under control which should be between 1 and 1.3 bar;
Check regularly wear of the filters, if the filter edges are in good condition or damaged and if there are coffee grouts at
the bottom of the coffee cup.
Grinder-doser
Check the dose of coffee regularly (between 6 and 7 g per dose) and then check grinding. The grinders must always be
perfectly sharp and their deterioration is a sign that there is too much powder in the ground coffee. We recommend
changng the grinders every 500/600 kg of coffee.
Refrigerator
Pay particular attention to the seal that must always ensure perfect tightness. Replace it if this is not the case. If there
is an excessive quantity of ice or frost inside the refrigerator, switch it off by turning the main switch round to position 1, wait
for it to defrost, dry the inside and check its temperature, adjusting the fridge thermostat.
Check the efficiency of the Peltier cell cooling fan regularly, replacing it if it is malfunctioning.
34
ENGLISH
Softener
Mains water contains insoluble salts which are the cause of furring inside the boiler and in other parts of the coffee maker.
The resin softener traps these salts. For this reason, after a certain period of time, they become saturated and are regenerated
with coarse kitchen salt (NaCl, sodium chloride) or specific salt for softeners. It is very important to regenerate the softener at
the established times. The formation of scale inside the water circuit occurs when regeneration is neglected; this results in long
periods of machine shutdown for overhauling, no longer covered by the guarantee.
Regeneration should be done regularly every 15 days. However, in places where the water is extra hard it will be necessary to
regenerate at shorter intervals. This same rule applies when a lot of hot water is used for making teas or other drinks.
ATTENTION
Scale prevents thermal exchange, undermining machine performance. If there is a thick layer of scale inside the boiler it
nullifies any guarantee because it means that regeneration was neglected.
12. LIST OF RISKS
In this chapter we have listed some of the risks the user can come up against if the specific safety rules and regulations are
not complied with (described in this manual).
The appliance must be effectively earthed.
Failure to do this can mean that the appliance is a source of dangerous electric discharges seeing as it cannot discharge
any electricity losses to earth.
Do not use running water for washing.
Pressurised water used directly on the machine can seriously damage the electrical components. Never use jets of water
to clean any part of the appliance.
Pay attention to the steam and hot water nozzles.
When the steam and hot water nozzles are used they get very hot and are a potential hazard source. Handle these parts
with extreme care. Never direct jets of steam or hot water on body parts.
Do not work on the machine when it is powered.
Before attempting any work on the machine it must be switched off via the main switch or, better still, take the plug out of
the mains socket. Never remove any of the body panels while the machine is powered.
Never work on the water system until it has been emptied.
Avoid all work on the water system and boiler if there is still water and pressure. Empty it first, closing the mains cock and
letting the dispensing unit run for a while empty. Switch the machine off and open all the steam and water cocks. With
pressure at zero, empty the boiler completely by opening the cock at the bottom of it.
If this is not done correctly and some part of the water system is opened it could cause the sudden exit of hot, pressurised
water.
Using the appliance
This espresso coffee machine is designed for professional use only. Any other use is to be considered wrong and therefore
dangerous. Never let children or uncapable people use it.
Non compliance with the above instructions can lead to serious bodily harm as well as damage to animals and things.
Never work on the electronic equipment when the machine is powered.
Disconnect the machine completely from the mains before embarking on any work.
ATTENTION
Any work done by a technician on the appliance’s electronic elements while the machine is still powered from
the mains will automatically nullify any guarantee.
The technician should be aware that the machine is powered and therefore act cautiously.
35
ENGLISH
13. TROUBLESHOOTING
PR OB LEM
C AU SE
R EMED Y
POWER I S N OT
R E A C H I N G TH E
M ACHINE
1) Machi ne swi tch on 0 or not worki ng
2) Mai ns swi tch OFF or not worki ng
3) C onnecti on to the electri ci ty mai ns i s faulty
1) Swi tch the machi ne's mai n swi tch on and
check i t i s worki ng properly
2) C heck the mai ns swi tch
3) C heck connecti on to the electri ci ty mai ns
N O WATER I N TH E
BOI LER
1) The mai ns cock i s closed or the mai ns i s not
supplyi ng water
2) The self-level exclusi on cock i s i n the closi ng
posi ti on
3) The pump fi lter i s clogged
4) The electri c pump i s ei ther di sconnected or
blocked
5) The H20 loadi ng solenoi d valve i s faulty
1) Open the mai ns cock
2) Open the self-level cock
3) C hange the pump fi lter
4) C heck the electri c pump
5) C heck the H20 loadi ng solenoi d valve
TOO M U C H WATER I N
TH E BOI LER
1) The manual valve stays connected
2) The self-level solenoi d valve i s faulty
3) The exchanger i s perforated
1) C heck the level probe and earthi ng of the
frame and check effecti veness of the electroni c
control uni t
2) C lean or change the self-level solenoi d valve
3) C hange the exchanger
N O STEA M I S C OM I N G
FR OM TH E N OZZLES
1) Faulty heati ng element
2) Pressure swi tch contacts have corroded
3) Heati ng element protecti on not connected
4) The steam nozzle spray i s clogged
1) C hange the electri c heati ng element
2) C lean the contacts of the pressure swi tch or
change i t
3) C heck and reset the heati ng element
protecti on
4) C lean
STEA M M I XED WI TH
WATER I S C OM I N G
FR OM TH E N OZZLES
The level of water i n the boi ler i s too hi gh
C heck the level probe: see i f i t i s posi ti oned
correctly i nsi de the boi ler and i f there i s li me on
i ts surface
U N I T D I SPEN SI N G
A BSEN T
1) No water i n the mai ns
2) Uni t solenoi d valve wi th i nterrupted coi l
3) Pump blocked
4) Blown fuse on the electroni c control uni t
5) Injector clogged
6) Uni t solenoi d valve clogged or di rty
7) D i spensi ng uni t fi lter clogged
8) Volumetri c doser blocked
1) See i f there i s water i n the mai ns
2) C hange the uni t solenoi d valve
3) C heck and, i f necessary, change the pump
4) C hange the solenoi d valve control uni t fuse (1
ampére)
5) C lean or change the i njector
6) C lean or change the solenoi d valve
7) C lean or change the fi lter uni t
8) C heck the volumetri c doser
WATER I S LEA K I N G
FR OM TH E M A C H I N E
1) D rai n clogged
2) D rai n coupli ng pi pe i s broken or has come
away and i t's di ffi cult for water to ci rculate
through the pi pe
3) Water leaki ng from the water ci rcui t
1) C heck the drai nage system
2) C heck connecti on between the drai npi pe and
tray
3) C heck and restore water ti ghtness
C OLD ESPR ESSO
1) Electri c heati ng element faulty
2) Electri cal connecti on faulty
3) Li me i n the exchangers (regenerati on has
been neglected)
4) Pressure swi tch contacts corroded
5) Heati ng element protecti on thermostat
i nterrupted
6) D i spensi ng uni ts are not hot enough
1) C hange the electri c heati ng element
2) C heck the electri cal connecti on to the mai ns
3) Overhaul the machi ne
4) C lean the pressure swi tch's contacts
5) Reset the thermostat
6) Remove all ai r from the water ci rcui t as follows:
- di sconnect the pump electri cally
- close the softener's water outlet cock
- di spense whi le empty for a few mi nutes
- reconnect the pump electri cally
- open the softener's water outlet cock
- di spense unti l water comes through
- wai t a few mi nutes for heati ng up
TH E E S P R E S S O I S
TOO H OT
Pressure swi tch erroneously cali brated or uni ts
wi th flow reducer whose di ameter i s too bi g.
Adjust the pressure swi tch by turni ng the screw
and check the reducer
C OFFEE I S BEI N G
D I SPEN SED TOO
QU I C K LY
1) C offee gri ndi ng i s too coarse
2) Injector di ameter i s too bi g
1) Adjust coffee gri ndi ng
2) C hange the i njector
C OFFEE I S BEI N G
D I SPEN SED TOO
SLOWLY
1) C offee gri ndi ng i s too fi ne
2) Fi lter holder di rty (cleani ng has been
neglected)
3) Uni t solenoi d valve and/or i njector clogged
4) D i spensi ng uni t clogged
1) Adjust coffee gri ndi ng
2) C hange the fi lter and clean fi lters and uni ts
regularly
3) C hange the i njector
4) C heck the uni t
C OFFEE GR OU TS A R E
WET
1) Uni t solenoi d valve drai n clogged
2) D i spensi ng uni t i s not hot enough
3) C offee gri ndi ng i s too fi ne
1) C lean the uni t's drai n
2) Wai t for i t to heat up completely
3) Adjust coffee gri ndi ng
TH E GA U GE I S N OT
SH OWI N G TH E
C OR R EC T PR ESSU R E
1) Gauge faulty
2) Erroneous pressure swi tch cali brati on
3) Erroneous electri c pump cali brati on
1) C hange the gauge
2) Adjust pressure swi tch cali brati on
3) Adjust electri c pump cali brati on
D I SPEN SI N G WOR K S
ON LY WI TH TH E
A U XI LI A R Y SWI TC H
(SA E)
1) Fuse blown on the electroni c control uni t
2) Solenoi d valve coi l shortci rcui ted
1) C hange the solenoi d valve protecti on uni t fuse
(1 ampere)
2) C hange the soleni od valve coi l
36
ENGLISH
PR OB LEM
C AU SE
R EMED Y
1) Faulty volumetri c doser connecti on
2)Faulty connecti on of the electroni c control uni t
cabli ng of the volumetri c dosers
3) Water or humdi ty on the volumetri c doser
connector
4) Volumetri c doser fai led: when coffee i s bei ng
di spensed the doser LED fai ls to flash
5) The coffee i s too fi nely ground: not enough
water i s getti ng through to the volumetri c doser
6) The check valve i s losi ng pressure (short
d o se )
7) The blowdown valves fai l to hold pressure
(short dose)
8) The solenoi d valve leaks water whi le coffee i s
bei ng di spensed or when resti ng
1) C heck the perfect connecti on of the volumetri c
doser's connector
2) C heck the perfect connecti on of the electroni c
control uni t's (8-pole) connector
3) Remove the doser's connector, dry the
contacts accurately, spray some anti -corrosi on
spray and reconnect
4) Replace the doser's electroni c heads
5) Adjust gri ndi ng accordi ngly
6) C heck the check valves
7) C heck the blowdown valves
8) C lean or replace the solenoi d valve
Two mi nutes after water i s automati cally bei ng
pumped i n, i t stops:
- no water i n the mai ns
- self-level cock i s closed
- the pi pes are clogged
- the probe or earth i s di sconnected
See why there i s no water. Reconnect the probe
or earth
TH E E LE C TR I C P U M P
ON LY WOR K S WI TH
TH E A U X I LI A R Y
SWI TC H
The control uni t's fuse has blown (pump)
C hange the fuse (10 ampere)
TH E ELEC TR ON I C
SYSTEM I S BLOC K ED
Ei ther the control uni t's general fuse has blown or
the doser's posi ti ve pole wi re has short ci rcui ted
wi th the earth
C hange the mai n fuse (125 mi lli ampere) and
check the doser
WATER LEA K I N G
FR OM TH E PU M P
1) Bad mechani cal ti ghtness of the shaft or O
ri ng
2) Inlet and outlet fi tti ngs are loose
3) The hexagon nut of the li mi ti ng valve or fi lter i s
loose
4) The seal or O ri ng of the li mi ti ng valve or fi lter
i s faulty
1) C heck the pump
2) Ti ghten fi tti ngs
3) Ti ghten the loosened hexagon nut
4) C hange the seal or O ri ng. Take care not to
tamper wi th the li mi ti ng valve's cali brati on
TH E M OTOR STOPS
SU D D EN LY OR TH E
TH ER M A L C U TOU T
PR OTEC TI ON
TR I GGER S D U E TO A N
OVER LOA D
1) Li me and mi neral deposi ts i nsi de the pump
have caused jammi ng
2) The pump and motor are not ali gned
3) The motor i s faulty
4) The motor i s connected wi th the wrong voltage
1) C hange the pump
2) Remove the pump from the motor taki ng care
to ali gn i t correctly
3) C hange the motor
4) Make sure that the supply voltage
corresponds to motor speci fi cati ons
TH E P U M P I S
WOR K I N G U N D ER I TS
N OM I N A L C A PA C I TY
1) The entrance i s obstructed or partly clogged
2) The pump i s turni ng i n the wrong di recti on
3) The li mi ti ng valve has become uncali brated
4) The i nsi de of the pump i s weari ng because
abrasi ve materi als have got i nsi de
5) The motor i s turni ng at a low number of
revs/mi nute
1) C lean or change the fi lter
2) C heck the motor
3) Recali brate the valve
4) C hange the pump
5) C heck correct supply voltage or change the
motor
TH E PU M P I S N OI SY
1) The pump and motor are not ali gned
2)The seal or O ri ng of the li mi ti ng valve or mai ns
1) Reali gn motor-pump
fi lter i s faulty
2) C hange the pump
3) The joi nt, the coupli ng screw, or the V clamp i s
3) Ali gn and close the loosened component
loose
4) C lean or change the i nlet fi lter
4) The i nlet i s obstructed or partly clogged
5) Ti ghten the loosened hexagon nut
5) The hexagon nut of the li mi ti ng valve or fi lter i s
loose
ELEC TR ON I C
M A C H I N ES:
FA U LTY D I SPEN SI N G
TH E D OSE OF C OFFEE
I S N OT WH AT I T
SH OU LD BE
TH E C H OSEN D OSE
K E Y LE D I S FLA S H I N G
ELEC TR ON I C
M A C H I N ES:
A LL LED S ON A LL
PU SH BU TTON
PA N ELS A R E
FLA S H I N G
SEM I -A U TOM ATI C
M A C H I N ES:
TH E FR ON T LED I S
FLA S H I N G
TH E R EFR I GER ATOR
FA I LS TO C OOL
1) The thermostat i s wrongly cali brated
2) The thermostat i s faulty
3) The safety thermostat tri ggers
1) Recali brate the thermostat
2) C hange the thermostat
3) Wai t for automati c resetti ng of the thermostat
and check i f the cooli ng fan has stopped
37
Download PDF
Similar pages