VKI Technologies CAFFE MIO Installation and operating instructions

VKI Publication #N016487
Operation & Service Manual
February 2012

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TABLE OF CONTENTS
SECTION 1 - INTRODUCTION........................................................................................3
Equipment Overview..................................................................................................4
Equipment Specifications...........................................................................................6
Using Coffee Packets..................................................................................................7
General Information ..................................................................................................7
SECTION 2 - INSTALLATION .........................................................................................7
Unpacking..................................................................................................................8
Plumbing the Unit ......................................................................................................9
Water Filter................................................................................................................9
Installing a Flo-Jet Pump .........................................................................................10
Installing the Scalehammer .....................................................................................10
Cup Holder Installation ............................................................................................12
Condiment Stand Installation...................................................................................12
Adding Products.......................................................................................................13
Testing Equipment Operation...................................................................................14
Publicity Graphics Installation .................................................................................15
Software Menus .......................................................................................................16
SECTION 3 - MAINTENANCE........................................................................................18
Daily Customer Maintenance....................................................................................19
Preventative Maintenance........................................................................................20
Brewer Adjustments ................................................................................................25
Brew Chamber Tension Adjustment ......................................................................... 25
Brew Chamber Installation...................................................................................... 26
General Maintenance and Adjustments..................................................................... 26
Zuma Brewer – Brew Chamber Tension Adjustment................................................... 27
Downloading Software Updates ...............................................................................29
SECTION 4 - TROUBLESHOOTING................................................................................31
Indicator Messages..................................................................................................32
Troubleshooting.......................................................................................................35
Coffee.................................................................................................................. 35
Coffee Water......................................................................................................... 36
Chocolate ............................................................................................................. 36
Fuses................................................................................................................... 37
Overflows............................................................................................................. 37
Water Tank........................................................................................................... 38
Zuma Brewer........................................................................................................ 39
SECTION 5 – REPLACING COMPONENTS .....................................................................39
Replacing Major Components...................................................................................40
Outlet Valve(s)...................................................................................................... 40
Brewer Screen ...................................................................................................... 45
Brewer................................................................................................................. 47
Brewer Bracket / Brewer Motor ............................................................................... 50
Water Tank........................................................................................................... 54
Water Tank Lid...................................................................................................... 62
Heater Element ..................................................................................................... 66
Temperature Probe................................................................................................ 68
Ingredient Dispenser.............................................................................................. 71
Ingredient Dispenser Motor..................................................................................... 74
Front Circuit Board ................................................................................................ 80
Rear Circuit Board ................................................................................................. 87
Whipper Motor ...................................................................................................... 89
Inlet Valve............................................................................................................ 97
Fuse Box Assembly................................................................................................ 99
Overflow Cup Assembly.........................................................................................102
Heater Relay........................................................................................................103
Thermal Cut-Off Switch.........................................................................................104

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Equipment Overview
Powder
Dispenser
Coffee
Dispenser
Dispenser
Spouts
Zuma
Brewer
Brewer
Spout
Grounds
Container
Hot Water
Tank
Water Tank
Overflow Cup
Coffee
Packet
Chute
Cup Stand
Sensor and
Overflow Sensor
Powder
Whipper
Assembly

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Equipment Overview
The diagram above illustrates the selection panel layout on the front door of the Caffè
Mio. Use this diagram as reference when installing the decals onto the selection buttons.
Also, note that there is only one button on the interior control panel. This button allows
access to the counters and to the “SET-UP” mode.
NOTE: An optional side-mounted coin changer unit (A510122) can also be installed on this
unit. Consult VKI Publication # N016524 for more detailed information.
HIDDEN BUTTONS
SCROLL ‘UP’AND
‘INCREASE’BUTTON
SCROLL ‘DOWN’AND
‘DECREASE’BUTTON
Choose a
cup size
to start
Choose a
beverage
Place your cup

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Equipment S pecifications
ELECTRICAL SPECS
Power Consumption (Heater): 1100 watts
Maximum Current Draw: 12.5 amps
Power Source: 115 Volts AC @ 60Hz
OVERALL DIMENSIONS
Height: 26.5 in (67 cm)
Width: 13.5 in (34 cm)
Depth: 19.5 in (49 cm)
INSTALLATION DIMENSIONS
Height: 35.5 in (90 cm)
Width: 22.5 in (57 cm)
Depth: 24 in (61 cm)
WEIGHT
Shipping: 85 lbs (39 kg)
Operational: 102 lbs (46 kg)
CAPACITY
Coffee Hopper: 1.5 lbs (680 g)
Powder Hopper: 2 lbs (908 g)
Hot Water Tank: 1.9 gallons (7.3 liters)
BREWER
12-oz Zuma Paperless
Brewing Temperature: approximately 199°F (93°C)
FUSES
5 amp Protects valves, motors and electronics
15 amp Protects heater circuit only
WARNING: This equipment is designed for INDOOR USE ONLY. Placing the unit
outdoors is extremely dangerous. VKI Technologies is not responsible for any
damage or injury resulting from outdoor placements of these coffee makers.

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Using Coffee Packets
To brew a cup of coffee using a packet, follow these simple instructions.
1. Press the “PACKET” button on the front selection panel.
2. Open the packet door on the top front of the machine.
3. Open the coffee packet and pour the contents into the packet opening on the top of the
machine.
4. Close the packet door.
5. Press the pre-selected cup size button for the packet to start the brew cycle. The LED for
this cup size will be flashing.
NOTE: To cancel the packet option if the packet button has been pressed accidentally, press
the “COFFEE”button. If the cycle is not started in 30 seconds, the packet cycle will
automatically be canceled.
General Information
The hot water feature is “PRESS AND HOLD” only. Hot water will only be dispensed as long as
the “HOT WATER” button is pressed. It will not be dispensed “by the cup”.
There is only one button on the inner board panel. This button is used to access the set-up
mode, and to return to the main menu after a setting has been changed.
The access code to enter the SET-UP is:
“SET-UP” ACCESS CODE
COFFEE +PACKET +CHOCOLATE +COFFEE
To exit a sub-menu and get back to the main menu, press the SET-UP button.
To display the VEND TOTAL, press the "COFFEE" and "STRONG" buttons simultaneously.
To display the FREE VEND TOTAL, press the "CHOCOLATE" and "STRONG" buttons simultaneously.
To display the WATER TEMPERATURE, press the "CAFÉ MOCHA" and "STRONG" buttons
simultaneously.
To reset the counters, scroll to the “CLEAR COUNTERS”menu in the set-up and enter the
following access code:
“CLEAR COUNTERS” ACCESS CODE
COFFEE +PACKET +CHOCOLATE +COFFEE +SMALL CUP
The COFFEE and SMALL CUP buttons cannot be disabled. All other buttons can be disabled in the
ENABLE SWITCHES menu.
This unit works in free vend only, unless an optional, side-mounted coin changer unit is
installed (p/n – A510122).

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Unpacking
1. Remove the coffee maker from its shipping carton.
2. Lift and place the coffee maker onto your workbench.
3. Open the outer door (the key is in a small envelope attached to the service cord) and
open the top cover.
4. Remove all the shipping tape.
a) Shipping tape is found in the following areas: service cord, brewer spout, cup
tray.
5. Remove the cup tray shipped inside the coffee maker and install it onto the front door.
WARNING: DO NOT lift the coffee maker by placing your hand underneath
the front door. It is not designed to support the weight of the machine, and
serious personal injury and/or damage to the unit may occur.
NOTE: Prior to signing for the delivery, check the shipping carton for damage. Indicate any
damage on the delivery slip and have the driver sign acknowledging it. Damages
during shipping must be claimed with the carrier, and not with VKI Technologies.

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Plumbing the Unit
Water Filter
We recommend the use of a high quality water filter (such as Everpure Filters) which will
eliminate most odors present in water, and reduce the amount of particles entering the
water tank. The following are basic instructions for installing a cartridge type filter using a
head bracket (Everpure type filter).
1. Assemble the retaining bracket to the filter head.
2. Insert the cartridge into the filter head and turn the cartridge clockwise.
3. Apply Teflon tape to the threaded portion of two 3/8" x 1/4" fittings and screw
each into the filter head.
4. Mount the water filter at an easily accessible place for servicing, such as:
(a) Under the sink against the back or side wall,
(b) On the back of a utility cabinet,
(c) On the back of the coffee maker,
(d) Any location generally within 20 feet of the machine.
NOTE: The shut-off valve must be easily
accessible by the customer, who
must be informed of its location
during the installation.
MATERIAL REQUIREMENTS:
EQUIPMENT FITTING:Male 3/8 inch NPTF
TUBING (WATER SUPPLY TO FILTER): Reinforced PVC Beverage grade
TUBING (WATER FILTER TO EQUIPMENT): Stainless steel braided hose



NOTE: When the filter is installed or replaced, make sure to write the installation date in the
provided area on the filter cartridge. Follow the manufacturer’s recommendations for
filter replacement intervals.

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Installing a Flo-Jet Pump
In certain locations, it may not be possible to connect
the equipment to a direct water source. In such cases, a
FLOJET Bottled Water Dispensing System needs to be
used.
The FLOJET Bottled Water Dispensing System is
designed to pump water from a commercially available 5
gallon water bottle. The system delivers the water under
pressure to the equipment on which it is connected.
The illustration to the right shows a basic FLOJET Bottled
Water Dispensing System installation inside the cabinet on
which the equipment is installed. Both the bottled water
and the water pump are conveniently installed inside the
cabinet, simplifying water bottle replacement when
required.
More detailed installation and operating instructions can
be found in the Installation and Maintenance manual
included with every FLOJET Bottled Water Dispensing
System.
Installing the Scalehammer
The Scalehammer is very easy to install, it takes a few minutes and does not require
plumbing or any interruption to the water system. All that is required is about 18 inches
(45cm) of exposed pipe on which to install the unit. An adjacent power outlet is required
for the plug-in transformer. The surface of the pipe must be clean and free of oil, grease
and insulation.
1. Two wire ties are provided for mounting
the Scalehammer to the water pipe. Insert
one wire tie in each clip located on the
back of the unit; wrap the ties around the
pipe where the Scalehammer will be
mounted, pull the tie until the unit is
secure to the water pipe, then cut off the
excess tie.
2. Note that the antenna wires are off-
centered with the pipe.
If the unit is mounted horizontally:
one antenna wire must go over and
the other under the pipe.
If mounted vertically: one antenna
wire must go to the right and the
other to the left side of the pipe.
NOTE: Maximum pipe diameter is 1” (2.5 cm)

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NOTE
:
One antenna must be wrapped in a
clockwise direction and the other in a
counter-clockwise direction.
Installing the Scalehammer
3. Wrap the antenna wire around the pipe in
a very tight coil. A minimum of 18 full
coils is required for best results.
Apply the supplied tape to assure that the
coils are securely maintained on the pipe.
Overlap the coils at least ¾ of an inch
(2cm), applying two coats of tape. For
best results, each antenna coil must be
wound in very tight turns snuggly fitted
against each other using up the entire
antenna and held secure.
4. Insert the power supply plug into the
power supply jack on the side of the
Scalehammer then plug the power supply
into a standard electrical outlet.
When on, the green power indicator will light up and when the water will be energized,
the red indictor will start flashing.
If the indicator lights are not responding, unplug the power supply, wait one minute, and
then plug in the power supply again.
WARNING: If you suspect a malfunction of the Scalehammer, do not open
or modify the unit - this will nullify the warranty and damage the unit.

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Cup Holder Installation
1. Install two screws into the threaded
clinch nuts on the top right wall of the
coffee maker.
2. Place the cup holder onto the two
screws making certain the screws
enter the key-hole shaped slots of the
cup holder.
3. Slide the cup holder downwards onto
the two screws.
4. Tighten the two screws to secure the
cup holder in position.
Condiment Stand Installation
1. Install two screws into the threaded
clinch nuts on the top left wall of the
coffee maker.
2. Place the condiment stand onto the
two screws making certain the screws
enter the key-hole shaped slots of the
condiment stand.
3. Slide the condiment stand downwards
onto the two screws.
4. Tighten the two screws to secure the
condiment stand in position.
WARNING: DO NOT lift the coffee maker by placing your hand underneath
the cup holder or condiment stand. Remove both of these accessories prior
to lifting the equipment.

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Adding Products
1. Open the front door.
2. Raise the machine lid open.
3. Lift and remove the coffee and chocolate dispenser lids.
4. Pour fresh ground coffee into the coffee dispenser (left side).
5. Pour chocolate powder into the chocolate dispenser (right side).
6. Re-install the coffee and chocolate dispenser lids.
7. Close the machine lid.
8. Close the front door.
Machine Lid
Water Tank
Access Panel
Ingredient Dispensers

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Testing Equipment Operation
1. With the front door open, place a cup directly below the brewer spout.
2. Press the “COFFEE” button on the selection panel.
3. Press “START” to begin the brew cycle.
4. Visually verify the operation of the brewer, coffee dispenser and coffee water
valve.
5. Verify the quantity of liquid dispensed into the cup. If the level is too high or too
low, make the necessary water and/or product adjustments.
6. Test the temperature of the finished beverage.
7. Adjust the temperature, if required.
8. Taste the coffee and make any necessary adjustments.
9. Repeat the same procedure for the “STRONG” beverage.
10. With the front door open, place a cup on the cup stand (on the door), as chocolate
is dispensed through the door spout.
11. Press the “HOT CHOCOLATE” button on the selection panel.
12. Press “START” to begin the cycle.
13. Visually verify the operation of the chocolate dispenser, whipper system (including
the tubing) and chocolate water valve.
14. Verify the quantity of liquid dispensed into the cup. If the level is too high or too
low, make the necessary water and/or product adjustments.
15. Taste the hot chocolate and make any necessary adjustments.
16. With the front door open, place a cup on the cup stand (on the door), as hot water
is dispensed through the door spout.
17. Press and hold the “HOT WATER” button. Water should be dispensed as long as the
button is pressed.
18. Visually verify the operation of the hot water valve and the tubing.

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Publicity Graphics Installation
The front door of the Caffè Mio is designed to easily accept (and replace) publicity
graphics that can be viewed by the public. From time to time, new graphics may become
available and you may want to replace the existing graphics in the equipment. The
procedure for replacing the publicity graphics on the Caffè Mio door is outlined below.
1. Open the front door of the Caffè Mio.
2. Lift the publicity graphics spring plate and remove the existing graphics sheet.
3. Slide the new graphics sheet under the spring plate and align it so that it can be
viewed through the front window.
4. Gently release the graphics spring plate, which will then hold the graphics sheet
securely in place.
5. Close the front door of the Caffè Mio.

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Software M enus
MAIN MENU
LCD MESSAGE
DESCRIPTION OF ITS FUNCTION
TO OPEN BREWER
PRESS PRODUCT
Press the COFFEE button to open the brew chamber.
Press the COFFEE button once more to close the brew chamber.
CASH BOX
PRESS PRODUCT
This counter displays the total amount of money that has accumulated in the cash
box, located inside the optional Coin Changer Assembly.
To reset the counter to zero, press the COFFEE and MOCHA buttons on the front
selection panel simultaneously.
RINSE CYCLE
PRESS PRODUCT
Activates the different types of rinse cycles available on this equipment.
Press COFFEE for the brewer rinse cycle.
Press CHOCOLATE for the whipper rinse cycle.
Press COFFEE to cancel the brewer rinse cycle after it has been initiated.
SET-UP
PRESS PRODUCT
Press the COFFEE button to access the SET-UP mode.
The menus displayed in the SET-UP mode are listed in the table on the next page
(titled SET-UP MENU).
EMPTY WATER TANK
PRESS PRODUCT
This feature opens the water valve and allows the water tank to drain to the valve
level. The inlet valve will be disabled during this cycle. This will simplify valve
replacement.
Press the COFFEE button to access this menu.
To drain the water tank, press the COFFEE and HOT WATER buttons simultaneously
and keep them pressed – release the buttons to stop the cycle.
CAUTION – The water will come out of the coffee valve and may be extremely
hot. Also make certain the coffee hose is placed inside a leak-proof container.
TOGGLE FREE/COIN
PRESS PRODUCT
Allows you to toggle the equipment from “FREE” mode to “COIN” mode and vice-versa.
TOTAL/SELECTION
PRESS PRODUCT
This counter will display the number of cups brewed for the selection that corresponds
to the LED’s that are illuminated on the selection panel. To get a counter reading,
press the buttons that would correspond to the counter you need to access. At this
point, the LED’s for your selection(s) will be illuminated.
There is only one button on the inner board panel. It
is used to access the SET-UP mode, and to return to
the main menu after a setting has been changed.
PRESS SET-UP
BUTTON
INSIDE FRONT
DOOR

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MAIN MENU
LCD MESSAGE
PROCEDURE
ENTER CODE
CODE:
An access code must be entered to get into SET-UP mode. The access code is:
COFFEE +PACKET +CHOCOLATE +COFFEE
'SET-UP'
SET PROD. COFFEE
1. Press the COFFEE button to enter this menu.
2. Select COFFEE or COFFEE STRONG and a CUP size.
3. Increase or decrease the product timing using the hidden scroll buttons.
To test the coffee quantity to be dispensed, press the HOT WATER button.
To return to the main menu, press the SET-UP mode button.
'SET-UP'
SET WATER COFFEE
1. Press the COFFEE button to enter this menu.
2. Select a CUP size.
3. Increase or decrease water timing using the hidden scroll buttons.
To test the water quantity to be dispensed, press the HOT WATER button.
To return to the main menu, press SET-UP mode button.
'SET-UP'
ENABLE SWITCH
1. Press the COFFEE button to enter this menu.
2. Enable or disable product or cup size by pressing the corresponding button on the
front selection panel.
If LED is on, the corresponding button is enabled and if LED is off, the corresponding button is
disabled.
To return to the main menu, press SET-UP mode button.
'SET-UP'
SET TOP PAUSE
1. Press the COFFEE button to enter this menu.
2. Select a cup size.
3. Increase or decrease top pause timing by using the hidden scroll buttons.
To return to the main menu, press SET-UP mode button.
'SET-UP'
SET BOTTOM PAUSE
1. Press the COFFEE button to enter this menu.
2. Select product and cup size.
3. Increase or decrease bottom pause timing by using the hidden scroll buttons.
To return to the main menu, press SET-UP mode button.
'SET-UP'
DELAY PAUSE
1. Press the COFFEE button to enter this menu.
2. Increase or decrease delay pause timing by using the hidden scroll buttons.
To return to the main menu, press SET-UP mode button.
'SET-UP'
SET TEMPERATURE
1. Press the COFFEE button to enter this menu.
2. Increase or decrease the temperature by using the hidden scroll buttons.
To toggle from C° to F°, press the “COFFEE” button while in this menu.
To return to the main menu, press SET-UP mode button.

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MAIN MENU
LCD MESSAGE
PROCEDURE
'SET-UP'
CLEAR COUNTERS
1. Press the COFFEE button to enter this menu.
2. An access code must be entered to reset counters. The access code is:
COFFEE +PACKET +CHOCOLATE +COFFEE +SMALL CUP
To return to the main menu, press SET-UP mode button.
'SET-UP'
SET PRICE
1. Press the COFFEE button to enter this menu.
2. Increase or decrease the price of the selections by using the hidden scroll buttons.
To return to the main menu, press SET-UP mode button.
'SET-UP'
SET WATER POWDER
1. Press the COFFEE button to enter this menu.
2. Select POWDER or POWDER/COFFEE MIX.
3. Select a CUP size.
4. Increase or decrease the product timing using the hidden scroll buttons.
To test the water quantity to be dispensed, press the HOT WATER button.
To return to the main menu, press SET-UP mode button.
'SET-UP'
SET PROD. POWDER
1. Press the COFFEE button to enter this menu.
2. Select POWDER or POWDER/COFFEE MIX.
3. Select a CUP size.
4. Increase or decrease the powder timing using the hidden scroll buttons.
To test the powder quantity to be dispensed, press the HOT WATER button.
To return to the main menu, press SET-UP mode button.
'SET-UP'
SET LANGUAGE
1. Press the COFFEE button to enter this menu.
2. Change the language from English to French by using the hidden scroll buttons.
To return to the main menu, press SET-UP mode button.
'SET-UP'
PACKET CUP SIZE
1. Press the COFFEE button to enter this menu.
2. Press “SMALL” cup or “LARGE” cup to configure the packet cup size.
To return to the main menu, press SET-UP mode button.

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Daily Customer Maintenance
Print or make copies of this section to use as a checklist for daily customer maintenance. You can leave a copy
of this page with the customer as a reminder of the daily maintenance that needs to be performed.
Empty the Waste Bin
1. Open the front door.
2. Open the inner door.
3. Pull out the waste bin.
4. Discard the contents of the bin.
5. Rinse the waste bin with warm running water and dry it thoroughly.
6. Re-install the waste bin.
Adding Coffee / Chocolate
1. Raise the machine lid open.
2. Lift and remove the coffee and chocolate dispenser lids.
3. Pour fresh ground coffee into the coffee dispenser (left side).
4. Pour chocolate powder into the chocolate dispenser (right side).
5. Re-install the coffee and chocolate dispenser lids.
6. Close the machine lid.
Clean Drip Tray
1. Pull the drip tray straight out.
2. Empty the contents of the tray into a sink.
3. Separate the grill from the tray.
4. Rinse the grill under warm running water.
5. Rinse the drip tray under warm running water.
6. Place the grill back onto the drip tray.
7. Slide the drip tray back into the position on the front door.
Clean Interior & Exterior of Equipment
1. Clean the interior of the machine by using a damp cloth (water only) to wipe the machine base,
walls, inner and main door, etc.
2. To clean the exterior of the machine, use a mild cleaner and a clean cloth and wipe the exterior
of the machine, the counter top, etc.

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Preventative Maintenance
Print or make copies of this section to use as a checklist during a preventative maintenance visit. If any problems
are identified with the equipment, they must be corrected before you leave the account.
Empty the Waste Bin
1. Open the front door.
2. Open the inner door.
3. Pull out the waste bin.
4. Discard the contents of the bin.
5. Rinse the waste bin with warm running water and dry it thoroughly.
6. Re-install the waste bin.
Adding Coffee / Chocolate
1. Raise the machine lid open.
2. Lift and remove the coffee and chocolate dispenser lids.
3. Pour fresh ground coffee into the coffee dispenser (left side).
4. Pour chocolate powder into the chocolate dispenser (right side).
5. Re-install the coffee and chocolate dispenser lids.
6. Close the machine lid.
Brewer Rinse Cycle
When performing a brewer rinse, use only VKI approved powder cleaner. Any other
chemicals or detergents may damage the brewer. Do not, under any circumstances,
soak the brewer’s plastic parts in brewer cleaner for prolonged periods of time
(maximum is 30 minutes) as they may become brittle.
1. Open the front door and place a heat-resistant and leak-proof container below the brewer spout.
This container must remain under the brewer spout for the duration of the brewer rinse cycle.
2. Pour a packet of VKI/Filterfresh approved brewer cleaner into the brew chamber.
3. Press the “SET-UP” button on the interior panel.
4. Using the hidden scroll buttons, scroll to the “RINSE CYCLE” menu.
5. To start the automated brewer rinse cycle, press the “COFFEE” button on the front selection
panel.
6. The piston will now move to the top of the brewer cylinder and water will be dispensed into the
brewer, mixing with the brewer cleaner powder.
7. The brewer will pause in this position for approximately five minutes, allowing the cleaning
solution break down oils and stains that have accumulated inside the brewer and on the screen.
a) If you need to cancel the “RINSE CYCLE” after it has been initiated, press the “COFFEE” button.
8. After the five minutes have elapsed, the brewer will cycle, dumping the cleaning solution into the
container that was placed below the brewer spout. The brewer will then automatically cycle
water seven consecutive times to rinse the cleaner from the brewer.
9. After these cycles are finished, the brewer will stop and the machine will exit the rinse mode.
10. Brew several cups of coffee – the coffee oils are needed to re-lubricate the brewer.
11. Remove the brewer chamber and rinse it under warm water to remove any residual cleaner that
may have been left behind after the rinse cycle.
Please note that the screen is only good for 2-3 cleanings. If the screen appears to be
damaged in any way, it needs to be replaced. Refer to the "Replacing the Brewer Screen"
section of this guide for instructions.