Sunbeam EM6910 Cafe Series Service Technician – Training Manual

Brand: Sunbeam

Model: EM6910 Cafe Series

Category: Coffee makers

Type: Service Technician – Training Manual

Sunbeam EM6910 Cafe Series is a high-performance espresso machine that combines style and functionality. With its twin thermoblock and pump system, it allows simultaneous brewing of espresso and steaming of milk, just like a commercial machine. The pre-infusion feature enhances the flavor and body of the espresso. The easy-to-use control panel offers manual operation or programmable settings for personalized coffee preferences. The machine also includes a variable steam control dial, hot water wand, and a large warming plate to keep cups warm.

EM6910 Café Series Espresso Machine Issue: A Page 1 of 48

PRODUCT IMPROVEMENT CENTRE

TECHNOLOGY DEPARTMENT

SERVICE TECHNICIAN – TRAINING MANUAL

FEBRUARY 2007

EM6910

Café Series Twin Thermoblock Espresso Machine

EM6910 Café Series Espresso Machine Issue: A Page 2 of 48

TABLE OF CONTENTS

Safety precautions page 3

About espresso coffee page 4

Features of espresso machine pages 5-6

Functions of espresso machine pages 7-8

Using the control panel pages 9-11

Electrical Safety page 12

Performance pages 13-20

Advanced Programming Option pages 21-23

Servicing

• Spare Parts List pages 24-25

• Troubleshooting Guide pages 26-29

• Service Requirements pages 30

• Exploded Diagram pages 31-45

• Circuit Diagram pages 46-48

EM6910 Café Series Espresso Machine Issue: A Page 3 of 48

SAFETY PRECAUTIONS FOR YOUR SUNBEAM ESPRESSO

MACHINE

• Always place the unit on a flat, level surface.

• Do not operate without water in reservoir. Fill reservoir with only clean, cold water.

The maximum filling volume is 3 litres.

• Do not remove the filter handle during the espresso pour or water flow as the unit

is under pressure. Removing the filter handle during either of these operations

can lead to scalding or injury.

• The steam wand and hot water tap become very hot during texturing milk and

water flow. This may cause burns in case of contact, therefore avoid any direct

contact with the steam wand or hot water tap.

• Always disconnect the plug from the power outlet prior to cleaning the espresso

machine or if there is any problem during the coffee making process.

• Do not allow the power cord to come into contact with the hot parts of the

espresso machine, including the cup warming plate, hot water tap and steam

wand.

• Do not place hands directly under the steam, hot water or coffee pour as

this can lead to scalding or injury.

Michael O'Donnell 1/5/07 4:53 PM

Formatted: Font color: Auto

EM6910 Café Series Espresso Machine Issue: A Page 4 of 48

ABOUT ESPRESSO COFFEE

The Sunbeam Café Series™ delivers quality, style and superior performance

capturing the essence of the commercial kitchen. Inspired by heavy-duty equipment

found in restaurants, cafes and bars, the Sunbeam Café Series™ is built to last. It

brings together a range of appliances designed to expertly create authentic café food

and beverages at home.

Uncompromising blends of stainless steel, brass and die-cast alloy characterise the

range. This combined with advanced technology and functional design, guarantee

the performance, that each product will surpass expectations.

The Sunbeam Café Series™ Twin Thermoblock Espresso Machine features a twin

pump, twin thermoblock, TPTT™ system to ensure a stable water temperature while

also allowing simultaneous production of espresso and steam to texture milk.

The dedicated twin thermoblock heating system takes away the waiting time for

water temperatures to adjust between pouring espresso and producing steam. The

twin pumps provide the necessary pressure and as a result the coffee maker has

access to instant steam for texturing milk and at the same time produce a serve of

espresso just like a true commercial machine.

Another feature of the espresso machine is the pre-infusion. The pre-infusion

gradually releases water pressure pre-soaking the coffee grinds before full water

pressure is applied. This in turn delivers a greater body and sweetness to the

espresso.

The Café Series™ Twin Thermoblock Espresso Machine is designed with quality die-

cast metal components and includes many features that make producing delicious

coffee at home even easier. We hope you enjoy your new espresso machine and

should you need any further assistance please don’t hesitate to contact the Sunbeam

Coffee Hotline on Free Call 1800 025 059.

EM6910 Café Series Espresso Machine Issue: A Page 5 of 48

Features of your Café Series™ Twin Thermoblock

Espresso Machine

Warming plate

The large warming plate effectively pre-warms cups helping to retain the essential

characteristics true of espresso - sweet, creamy taste and aroma.

Variable steam control dial

Steam wand

A dedicated thermoblock and pump provide an instant supply of powerful dry steam

for achieving silky, dense and rich milk that should be heated to between 60°C -

65°C. The commercial 360° ball joint allows the steam wand to be moved into the

ideal position.

Commercial size group head

Commercial size filter handle

Programmable control panel

An easy to use control panel provides the choice of manual operation or utilising the

programmed espresso pour lengths. The programmed espresso pour is set to 25-

30mls per cup while the program function allows users to personalise and save their

own espresso settings.

Hot water control dial

Hot water wand

Dispenses a constant and controlled flow of hot water, ideal for long blacks, tea and

hot chocolate. For ease of use the wand has a commercial 360° ball joint.

Espresso gauge

The gauge indicates the quality of the espresso pour.

3 litre water reservoir

Removable 3 litre water reservoir with hand grips for easy filling.

Low water warning indicator

EM6910 Café Series Espresso Machine Issue: A Page 6 of 48

Removable drip tray

The large capacity die-cast metal drip tray is lined with plastic, preventing staining

from espresso, lightweight for easy removal and designed with no dirt traps for

simple wipe down cleaning.

Height adjustable rubber feet

The height adjustable feet ensure the espresso machine is level on the benchtop.

Additionally integrated into the two back feet are rollers, these allow the user to

effortlessly move the machine – great when trying to clean underneath.

Accessories

All the essential accessories to make an authentic café quality espresso – 800ml

stainless steel milk texturing jug, barista coffee tamp and spoon for measuring out

coffee.

1 cup filter basket

2 cup filter basket

EM6910 Café Series Espresso Machine Issue: A Page 7 of 48

Functions of your Café Series™ Twin Thermoblock

Espresso Machine

Twin Pump and Twin Thermoblock - TPTT™

System

Italian designed and manufactured, the machine is

fitted with a 15 BAR pump for the espresso function,

delivering the pressure required for a complete

extraction of oils, coffee solids and aroma. An

additional 4 BAR pump is dedicated to the steam

function, producing instant steam pressure for

texturing milk.

Independent thermoblock heating systems lined

with stainless steel heat the water ensuring the precise temperature is achieved for

each function eliminating waiting time and reducing temperature fluctuations.

TPTT™ System – Simultaneous Use

True to commercial use, the unique TPTT™ System

features twin pumps and twin thermoblocks, this

allows the coffee maker to texture milk and pour an

espresso simultaneously.

Espresso Gauge

The gauge indicates the quality of the espresso pour.

Whilst the needle is within the target area

on the gauge the coffee maker knows that

they have made an excellent serve of

espresso. Should the needle fall below the

target area then it’s an indication to the

coffee maker that the serve of espresso is

under extracted. Should the needle go beyond the target area than it’s an indication

to the coffee maker that the serve of espresso is over extracted.

To achieve an excellent pour of liquid espresso a combination of a fine espresso

grind and the correct amount of coffee packed firmly and evenly in the filter will help

attain this result.

Excellent Pour

Under

Extracted

Pour

Over

Extracted

Pour

EM6910 Café Series Espresso Machine Issue: A Page 8 of 48

Tip: Achieving a good pour of liquid espresso is more likely when using freshly

ground coffee.

Commercial Size Group Head & Filter Handle

The group head, filter handle and filters are

designed to commercial specifications using brass

and stainless steel components. These elements

help contribute to the preparation of an espresso

serve, as it allows the coffee maker to pack the

necessary amount of coffee grinds, which then

expand firmly and evenly onto the shower screen.

Control Panel

An easy to use control panel provides the choice of

manual operation or utilising the programmed

espresso pour lengths. The programmed espresso

pour is set to 35mls per cup while the program

function allows users to personalise and save their

own espresso settings.

Pre-Infusion

Pre-infusion is programmed into the ‘MANUAL’, single espresso and double

espresso operations. It is a gradual release of water pressure pre-soaking the coffee

cake before full water pressure is applied. This in turn delivers greater body and

sweetness to the espresso.

Anti Calc Filter

An Anti Calc water filter reduces impurities that taint the flavour and odour of the

water, improving the taste and aroma of the espresso brewed. Additionally, scale

build up is slowed reducing the frequency of cleaning required.

The Anti Calc water filter fitted inside the 3 litre water reservoir has a 12 month life for

domestic use and a 3 month life for commercial use.

Note: Contact Sunbeam on 1800 025 059 for replacement filters.

EM6910 Café Series Espresso Machine Issue: A Page 9 of 48

EM6910 Café Series Espresso Machine Issue: A Page 10 of 48

EM6910 Café Series Espresso Machine Issue: A Page 11 of 48

EM6910 Café Series Espresso Machine Issue: A Page 12 of 48

ELECTRICAL SAFETY

ELECTRICAL TEST FOR EARTHED (CLASS I) APPLIANCES

♦ Earth Continuity

Earth continuity test must be performed between exposed metal

parts, and any one of the following locations:

(a) The earth pin on the three-pin plug attached to the flexible

cord (or complete assemblies).

(b) The green/yellow earth wire of the flexible cord (where no

plug is fitted).

(where no plug and cord is fitted).

Method

When a minimum current of 25 amperes from an extra low

voltage supply (0-12V AC) is made to flow between the above

locations, the resistance as determined by the volt amp method

(ie. V/I) must be less than 0.1 ohm for stationary parts and less

than 1 ohm for moving parts (e.g. shafts, etc.). When the

measurement is from location (a) or (b) an allowance for the

resistance of the cord is permitted.

♦ Insulation Resistance

A resistance measurement is to be taken between earth parts

(earth pin) and live parts (active and neutral pin) using 500 volts

dc. The resistance obtained must not be less than 1 Mega ohm.

♦ Electric Strength

A high voltage test must be applied between earthed metal parts

(earth pin) and live parts (active and neutral pins connected

together) of 1500 volts rms for 1 second or 1250 volts rms for

one minute for Quality Audits (QA).

Repeat clause 6.1.2 to verify there was no breakdown of

insulation.

EM6910 Café Series Espresso Machine Issue: A Page 13 of 48

PERFORMANCE

Specifications at 240 volts, 50 Hz and an ambient of 23 +/- 2

Supply Voltage 230 - 240V AC 50Hz.

Wattage Rating 2400W-10% @ 240VAC

(2160W to 2400W)

• Auto Heat Up for Switch On

• The unit shall detect the thermo block temperature and set different

heating rates for even temperature distribution while minimising the

heat up times.

• The maximum heat up time shall be no more than 1 minute 30

seconds.

 Note: Maximum heat up time is the period taken for a unit to reach

ready mode from a room and unit temperature of 25

C. Ready mode

is when the Power LED is Green Illuminated.

• All LEDs, push buttons and control knobs shall perform accordingly to their

function. Refer to figure 1 for further information.

Figure 1

• The push buttons shall not be jammed or wedged in position.

• The LED’s shall illuminate accordingly to their function.

• Control Knobs shall not be jammed or wedged in position.

• During thermal heat up mode, Power dual coloured LED shall flash in green and

while rest of the LEDs shall be off. Refer to figure 2 for further information.

Figure 2

• When either 1 of the 2 heating blocks reaches ready temperature, the unit

shall go into ready mode as illustrated by the LED pattern below shown in

Figure 3.

One Cup

Two Cups

Manual

Power

Program

Coffee

On Off

Steam

Hot Water

Water Level

One Cup

Two Cups

Manual

Power

Program

EM6910 Café Series Espresso Machine Issue: A Page 14 of 48

• During the event of any of the heater block going open circuit, the unit

shall not be prevented from going into ready mode when the second

thermal block reaches ready temperature.

Figure 3 - LED Ready Mode Pattern

• If either “Manual”, “One Cup”, “Two Cups” buttons is activated during ready

mode, the other remaining two LED’s shall be switched OFF, while the

goes to the user set function. The function setting is stated below: -

• Manual Coffee Function

Coffee water pump shall be switched ON for 2 minutes to pump

water through the coffee brewing outlet. Refer to figure 4 for LED

pattern illumination.

Figure 4

• One Cup Coffee Function

A set amount of one cup of coffee will be automatically produced.

Refer to Section 7.10 for set volume amounts. Refer to figure 5 for

LED pattern illumination.

Figure 5

• Two Cups Coffee Function

A set amount of two cups of coffee will be automatically produced.

Section 7.10 for set volume amounts. Refer to figure 6 for LED

pattern illumination.

Figure 6

One Cup

Two Cups

Manual

Power

Program

One Cup

Two Cups

Manual

Power

Program

One Cup

Two Cups

Manual

Power

Program

One Cup

Two Cups

Manual

Power

Program

EM6910 Café Series Espresso Machine Issue: A Page 15 of 48

• The user is able to discontinue the manual, one cup, and two cups

pouring process can be stopped by simply activating either Manual,

One cup, Two cups and Memory buttons. Doing so the unit shall go

back into ready mode.

• Memory Setting Function

The memory function can be cancelled by pressing “Memory” button

when the unit is in the memory setting function without activating one

cup or two cup function. Refer to figure 7 for LED pattern illumination.

Memory function shall be cancelled automatically after a 15 second no

button activation period.

There shall be no minimum limit for both one cup and two cup memory

setting.

Figure 7

Refer below to Factory Setting Volumes:

Factory memory setting volumes for brewed coffee volumes is as follows: -

• One cup: 30 ±2.5g

• Two cups: 60g ± 5g

• Maximum brew coffee volume difference between two cups: 2.5mL.

Factory memory setting volumes for water only volumes is as follows: -

• One cup: 55g ±2.5g

• Two cups: 110g±5g

• Maximum water volume difference between two cups: 2.5mL.

The brewed coffee volume of one cup and two cups setting shall be able

to be set by user by following the following procedure: -

• Press memory setting button once to start the memory setting process.

Refer to figure 8 for LED pattern illumination.

One Cup

Two Cups

Manual

Power

Program

EM6910 Café Series Espresso Machine Issue: A Page 16 of 48

Figure 8

• Press one-cup button or two cups button once to start the brewing

process. Refer to figure 9 & 10 for LED pattern illumination.

For One Cup

Figure 9

For Two Cups

Figure 10

• Activate any push button other than “Power” button when the brewed

coffee volume reaches desired volume. Two beeps shall be given to

indicate the memory volume setting has been saved. The unit goes

back to ready mode. Refer to figure 11 for LED pattern illumination.

Figure 11

• There shall be a weight tolerance of ± 2.5g during the 1 cup memory

water/coffee saved volume amount.

• There shall be a weight tolerance of ± 5.0g during the 2 cup memory

water/coffee saved volume amount.

• 1 cup/2 cups coffee memory recording should be maintained even after

disconnecting AC power from the unit.

One Cup

Two Cups

Manual

Power

Program

One Cup

Two Cups

Manual

Power

Program

One Cup

Two Cups

Manual

Power

Program

One Cup

Two Cups

Manual

Power

Program

EM6910 Café Series Espresso Machine Issue: A Page 17 of 48

Pre-infusion Function

• During the coffee brewing function during manual, 1cup, 2 cup, and

memory presets, a pre-fusion function shall be implemented before the

brewing process.

• The pump flows rate during the pre-fusion function is 4mls per second.

• The pre-fusion shall last for 3 seconds consisting of 0.5 second PUMP

ON and 0.3 second PUMP OFF, 0.7 second PUMP ON and 0.3 second

PUMP OFF, 0.9 second PUMP ON and 0.3 second PUMP OFF, and

then PUMP ON for continuos pour.

Factory setting shall be restored by performing the following process: -

Note: With the unit in OFF mode.

• Press and hold down the coffee “Manual” button

• Activate “Power ON/OFF” button once

• Only coffee manual green LED is switched ON

• Release the coffee “Manual” button

• Coffee manual green LED shall switch OFF

• 4 beep sounds are given to indicate the success of factory reset

• During the beeping period, the power on /off indication LED shall

flashing in green illumination.

• Unit goes to power ON phase and then goes to ready mode.

 Steam and coffee brewing or hot water functions can be operated simultaneously

without affect each other’s performance.

 Continuous and constant steam shall be provided as long as there is water in the

water tank.

 The total weight increase (water) after frothing 200g milk from 6

C to 60

C shall

not be more than 25g with the provided milk frothing stainless steel cup. The time

for frothing the milk shall not be more than 50 seconds to reach 60

C. (Result

shall be achievable by adjusting the steam pump rate or steam block

temperature).

 When hot water control knob is turned ON, the LED pattern illumination shall be

as illustrated in Figure 12

Figure 12

• Hot water temperature shall be at least 85

C and temperature is to be

maintained as long as there is water in the water tank.

One Cup

Two Cups

Manual

Power

Program

EM6910 Café Series Espresso Machine Issue: A Page 18 of 48

• The period to pump 250mls of water shall not be more than 55 sec.

• Whenever the hot water control knob is set to hot water setting, the unit

shall go into hot water function and cancel the coffee function,

regardless if the unit is in the middle of a coffee brewing process.

 Whenever power on/off button is activated after the unit is switched ON, the

unit shall be switch OFF.

 The maximum water volume is controlled by an internal timer of 1 minute

when operated in coffee manual mode, or in one cup & two cup mode or in

one cup & two cup memory setting mode.

 Water tank low level or dry detection

• If there is no water in the water tank, when the unit is switched ON, 4

audible beeps shall be given and water level indication LED shall flash

red in illumination. The unit shall then continue with its scheduled routine.

• When water tank is low in water or dry, 4 beeps shall be given and the

low water level indication red LED starts to flash and keep flashing

continuously until water level is above the warning line.

• When water level is low, no function should be affected.

• When water level is low in the ready mode, the unit shall give 4 beeps to

indicate water level is low when using any control prior to the function

commencing.

• When water level is low, at the beginning of water & steam function, a 2.5

minutes timer is activated. If the function is not finished within 2.5

minutes, the unit shall switch itself off. If the function is finished before

the 2.5 minutes, then the 2.5 minutes timer shall be disabled and timer is

reset to 0.

• When water level is low, if the maximum 1 minute setting runs out during

coffee manual, one cup, or two cups function, the unit shall switch return

to ready mode.

 The unit shall go to sleep mode if the unit has not used for 1 hour period.

The controlled temperatures are as follows; -

• 55

C +5

C for coffee thermo block

• 85

C +5

C for steam thermo block.

• In sleep mode only the two colours LED for power flashes in blackberry

pattern in green colour. Refer to figure 13 for LED pattern illumination.

Figure 13

 A unit shall completely switch itself OFF after continuous 26 hours in sleep

mode.

One Cup

Two Cups

Manual

Power

Program

EM6910 Café Series Espresso Machine Issue: A Page 19 of 48

 A self-diagnose routine in the software shall be implemented to monitor the

unit performance all the time and give an error warning signal by flashing

power LED in red. (Such as heating element open circuit, thermistor short or

open circuit, water flow meter, water pump malfunction.)

If one part of the unit is malfunction, the whole unit shall keep working.

Refer to figure 14 for LED pattern illumination

Figure 14

 Pressure gauge of 15 Bar shall have rotation range of 0

to 270

according

to the specified artwork.

 Pressure gauge needle shall not vibrate during the coffee brewing process.

 There shall be no water & steam leaking from all connections.

 Showerhead coffee brewing temperature must be within 90 – 95

 The unit must not be interfered by other appliances on the same AC power

line (eg. halogen lamps, chatterbox test).

Cleaning Function

The unit shall have a cleaning function which is used to clean the internal

coffee flow path.

Cleaning cycle Activation

• From power-off condition, hold down the one-cup and two-cup

buttons, and press the POWER button, then release all buttons.

• All LEDs on the switch panel will chase from left to right, at a

speed of 0.5sec per step indicating the machine is in cleaning

mode.

The cycle proceeds as follows (refer Figure 15 for more information):

• Warm up - The machine is allowed to warm up to normal idle

temperature.

• The machine then repeats the following cycle, 9 times. Close the

dump valve, and pump water for 8 seconds. Stop pumping and

open dump valve simultaneously. Wait for 37seconds (=45sec-

8sec).

• Finish the cycle as follows. Close the dump valve, and pump water

for 8 seconds. Open the dump valve and continue pumping for 22

seconds (=30sec-8sec). Stop pumping.

One Cup

Two Cups

Manual

Power

Program

EM6910 Café Series Espresso Machine Issue: A Page 20 of 48

• Beep 4 times, and return to idle mode.

Figure 14 - Cleaning Cycle Diagram

 With a blocked filter in the shower head, under coffee function, the needle of

the pressure gauge shall reach to maximum and there shall be no water leak

from all internal plumbing connections.

 Serial number shall be used to identify the each unit.

 Steam quality test under factory setting:

• Unit starts from cold and after ready lights are on, switch ON

steam function for 10 seconds to get remove initial water in the

plumbing.

• Collect water from the steam outlet over a period of 1 minute of

steaming into a small Milk Frothing Jug with the steam output jet

removed.

• The maximum water quantity in the jug must be less than 17.5g.

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Sunbeam EM6910 Cafe Series Service Technician – Training Manual

Brand: Sunbeam

Model: EM6910 Cafe Series

Category: Coffee makers

Type: Service Technician – Training Manual

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Sunbeam EM6910 Cafe Series Service Technician – Training Manual

Sunbeam EM6910 Cafe Series Service Technician – Training Manual

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