Melitta Latticia OT Operating Instructions

1 Safety Information

1.1 Intended Use The appliance is intended for use in private households for preparing coffee and heating milk and water. Any other use is considered improper and may lead to health problems and material damage.

1.2 Risk of Electric Shock Only use the appliance if it is in perfect technical condition. If the appliance or power cable is damaged, there is a risk of electric shock. In such a case, do not use the appliance and have it repaired by the manufacturer, a technical service or a service partner. Do not immerse the appliance in water or allow the power cable to come into contact with water. If the appliance is left unattended for a long period, disconnect it from the power supply.

1.3 Risk of Burns from Liquid or Steam Escaping liquids and steam can be very hot. The dispenser nozzles also become very hot.

1.4 General Safety Do not use the appliance in a cabinet or at altitudes above 2000 m. Do not reach into the appliance while it is operating. Do not open the housing or tamper with the appliance or its accessories in any way.

1.5 Children Children are not allowed to play with this appliance. Keep the appliance away from children under 8 years old. Children over 8 years old, or persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, may only use the appliance if they are supervised or have been instructed on the safe use of the appliance and understand the resulting risks. Cleaning and maintenance may not be carried out by children under 8 years old. Children over 8 years old must be supervised during cleaning and maintenance.

2 Appliance Overview

2.1 On/Off Switch Switch on by briefly pressing the on/off switch. During heating, the appliance performs a rinsing cycle. If possible, place a cup under the dispenser. You can switch off the appliance by pressing the on/off switch for approx. 2 seconds. If the appliance is not switched off manually, it will switch off automatically after the set time.

2.2 Service Modes The appliance has two service modes. In the service modes, you can set the appliance and activate functions for care and maintenance.

2.2.1 Accessing Service Mode

• Press and hold the "Water/Service" button for more than 2 seconds to access Service Mode 1.
• Simultaneously press and hold the "Water/Service" and "Coffee Strength" buttons for more than 2 seconds to access Service Mode 2.
• When a service mode is active, the readiness symbol flashes quickly.
• Press the "Water/Service" button one or more times to select a function. The symbol for the active function lights up.
• If no further input is made within 1 minute, the appliance switches back to standby mode.

2.2.2 Exiting Service Mode

• Press and hold the "Water/Service" button for more than 2 seconds to save the setting and exit service mode.
• Press any selection button to exit service mode without saving the setting.

3 Getting Started

3.1 Unpacking the Appliance Remove packaging material, adhesive tape, and protective films from the appliance. Please keep the original packaging. The appliance has been checked in the factory for its perfect functionality. Therefore, there may be traces of coffee and water in the appliance. Included in delivery: Milk tube, Filter wrench, Water hardness test strip.

3.2 Installing the Appliance Set up the appliance in a dry room. Place the appliance on a stable, level, and dry surface. The surface must not be hot. Do not install the appliance near sinks or similar fixtures. Maintain a sufficient distance of approx. 10 cm from walls and other objects. The free space above the appliance should be at least 20 cm. Route the power cable so that it does not run over edges or hot surfaces that could damage it.

3.3 Connecting the Appliance Connect the appliance only to a properly installed socket with protective earth. The socket with protective earth must be protected by at least a 10 A fuse.

3.4 First Time Use

1. Place a cup under the height-adjustable dispenser. The distance between the dispenser and the cup should be as small as possible.
2. Switch on the appliance using the on/off switch. The readiness symbol briefly lights up. The Water symbol lights up.
3. Remove the water tank. Rinse the water tank with clean tap water.
4. Fill the water tank with clean, cold tap water and replace it. Observe the instructions in section 4.1, page 159. The Steam Dispensing symbol flashes quickly.
5. Press any button. Water flows from the milk outlet and the readiness symbol flashes. The appliance heats up, and hot water flows from the dispenser. The appliance is vented when water no longer flows from the dispenser. The readiness symbol and the Coffee Beans symbol light up.
6. Fill the bean container. Observe the instructions in section 4.2, page 159.
7. Prepare and discard the first two cups of coffee. Observe the instructions in section 5, page 160.

4 Preparing the Coffee Maker

4.1 Filling with Tap Water The Water symbol lights up. The quality of tap water significantly influences the taste of the coffee. Fill the water tank only with clean, cold tap water, without carbon dioxide. Change the water daily. Do not fill more water than the maximum amount.

4.2 Filling with Coffee Beans The Coffee Beans symbol flashes. Caution! Do not use any freeze-dried or caramelized coffee beans, as they may clog the grinding mechanism. Ground coffee and instant beverages can also cause damage to the grinding mechanism. Roasted coffee beans lose their aroma within a few days. Do not fill too many coffee beans into the bean container. Caution! When changing the type of coffee beans, a small amount of the previous type remains in the grinding mechanism. The next two cups of coffee will be prepared with the residue of the previous type. People with caffeine intolerance should only consume the third decaffeinated coffee prepared.

4.3 Using Milk To prepare frothed or hot milk, insert the milk tube into the milk carton. You can also use a milk suction tube or a milk container. The milk suction tube and milk container must be purchased separately. Always use chilled milk.

4.4 Emptying the Drip Tray and Coffee Ground Container The Drip Tray symbol lights up. After a defined number of coffee preparation cycles, the appliance signals the need to empty the drip tray and the coffee ground container. The protruding float also indicates when the drip tray needs emptying.

The drip tray can be pulled out of the appliance by pulling it forward. Always empty both the drip tray and the coffee ground container. Then push the drip tray back into the appliance as far as it will go. Information! If the drip tray is emptied when the appliance is switched off, the machine will not register this action. Therefore, it may display a prompt to empty the tray even if it is not yet full. The coffee cups should be sufficiently large. The amount of beverage depends on the selected coffee type. The readiness indicator must be lit. Preparation can begin by pressing the corresponding direct selection button. Pay attention to any messages that appear during preparation. Set the desired beverage quantity using the "Coffee Quantity" regulator. Press the selection button again to interrupt coffee preparation. Coffee preparation is immediately interrupted. After preparing milk beverages, the milk system must be cleaned. This prevents the growth of microorganisms harmful to health. The lit "Clean" and "Steam Dispensing" symbols indicate that the milk system needs cleaning. However, you can prepare other milk beverages and then clean the system. 1. Immerse the milk tube in a container with clean tap water (approx. 150 ml). 2. Press and hold the "Frothy Milk" selection button for more than 2 seconds. Observe the instructions in section 7.3, page 163 and section 7.4, page 164.

5 Preparing Different Types of Coffee

When preparing, observe the following tips: The water tank must be sufficiently filled. If the fill level is too low, the appliance signals the need for refilling. There must be enough coffee beans in the bean container. The appliance only signals the need to refill beans when the bean container is empty and the appliance signals the need for refilling. To prepare coffee with milk, connect the filled milk container. The appliance does not signal a lack of milk.

5.1 Preparing Two Coffees Simultaneously For each type of coffee, you can prepare two cups at once. To do this, simply press the desired direct selection button twice. The 2x symbol flashes during preparation. For milk-based coffees, the Steam Dispensing symbol also flashes.

5.2 Changing Settings Before and during preparation, you can change the coffee strength and quantity. You can set the coffee strength by pressing the "Coffee Strength" button. After the grinding process is complete, the strength can no longer be changed. The changed coffee strength is also active when preparing subsequent beverages. You can change the beverage quantity by turning the "Coffee Quantity" regulator.

5.3 Setting the Grinding Degree The grinding degree affects the taste of the coffee. The finer the grinding degree, the stronger the coffee. The grinding degree is factory-set to an optimal value. Change the grinding degree setting earliest after 100 coffee dispensing cycles (approx. 1 month, depending on usage intensity). You can set the optimal grinding degree using the "Grinding Degree Setting" lever at the back of the appliance. Set the grinding degree only during the grinding process. Caution! Do not set the coffee grinding degree too finely. The grinding degree is optimally set if the coffee flows evenly from the dispenser and produces a delicate, dense crema.

6 Basic Settings

Basic settings are available in Service Mode 1. The number of displayed coffee beans symbolizes the set value.

6.1 Setting the Auto-Off Time If the appliance is not operated for a longer period, it initially switches to energy-saving mode. Then the appliance switches off completely. When the appliance is in energy-saving mode, you can wake it up by briefly pressing any operating button.

1. Press and hold the "Water/Service" button for more than 2 seconds.
2. Press the "Water/Service" button repeatedly until the 2x symbol lights up.
3. Press the "Coffee Strength" button repeatedly until the desired time is set.
4. Press and hold the "Water/Service" button for more than 2 seconds to save the setting and exit service mode. Press any selection button to exit service mode without saving the setting.

6.2 Setting Water Hardness The frequency of descaling depends on the water hardness. The harder the tap water, the more frequently the appliance needs to be descaled. Set the water hardness using the included test strip. Observe the instructions on the test strip and in the table below.

1. Press and hold the "Water/Service" button for more than 2 seconds.
2. Press the "Water/Service" button repeatedly until the Water symbol lights up.
3. Press the "Coffee Strength" button repeatedly until the desired hardness is set.
4. Press and hold the "Water/Service" button for more than 2 seconds to save the setting and exit service mode. Press any selection button to exit service mode without saving the setting.

6.3 Setting Rinse Cycle on Switch-Off When switching on and off, the appliance performs a rinse cycle. It is not recommended to permanently disable the rinse cycle on switch-off.

1. Press and hold the "Water/Service" button for more than 2 seconds.
2. Press the "Water/Service" button repeatedly until the Drip Tray symbol lights up.
3. Press the "Coffee Strength" button to activate/deactivate rinsing on switch-off.
4. Press and hold the "Water/Service" button for more than 2 seconds to save the setting and exit service mode. Press any selection button to exit service mode without saving the setting.

6.4 Setting Brewing Temperature Brewing temperature affects the taste of the coffee.

1. Press and hold the "Water/Service" button for more than 2 seconds.
2. Press the "Water/Service" button repeatedly until the Steam Dispensing symbol lights up.
3. Press the "Coffee Strength" button repeatedly until the desired brewing temperature is set.
4. Press and hold the "Water/Service" button for more than 2 seconds to save the setting and exit service mode. Press any selection button to exit service mode without saving the setting.

7 Care and Maintenance

Regular maintenance and cleaning of the appliance guarantee consistently high coffee quality. Caution! Improper cleaning agents may damage the appliance. Use only recommended cleaning agents.

7.1 Cleaning the Exterior For cleaning the exterior, use a soft, damp cloth and a small amount of dishwashing liquid. Immediately wipe away external dirt. After emptying the drip tray and coffee ground container, rinse them and, if necessary, clean them with a soft, damp cloth with a small amount of dishwashing liquid. Coffee bean residue from the coffee bean container can be removed with a soft cloth.

7.2 Cleaning the Brew Group The brew group should be cleaned weekly. 1. Remove the cover by pulling the handle and sliding it to the side. 2. Press and hold the red lever on the brew group handle and turn the handle clockwise until it clicks into place. 3. Pull the brew group out by the handle. When the appliance is switched on, the alternating flashing of the readiness symbol and the Clean symbol indicates that the brew group has been removed. 4. Rinse the brew group thoroughly under running water from all sides. Pay particular attention to ensuring that there are no coffee residues on the sieve. 5. Allow the brew group to drain. 6. Remove coffee residues from the interior surfaces with a soft, dry cloth. 7. Insert the brew group into the appliance. Press and hold the red lever on the brew group handle, turn the handle counter-clockwise until it clicks into place. 8. Replace the cover to lock it.

7.3 Cleaning the Milk System After approx. 100 prepared coffees, the milk system must be cleaned. The appliance does not remind you to clean the milk system. Use only Melitta® Perfect Clean cleaning agent for the milk system for automatic coffee machines. Follow the instructions on the packaging of the milk system cleaning agent.

To capture, use a container with a minimum capacity of 500 ml. 1. Fill a second container with the cleaning agent solution. Follow the instructions on the packaging of the milk system cleaning agent. 2. Immerse the milk tube in the cleaning solution. 3. Turn the "Coffee Quantity" regulator to the maximum position. 4. Press the "Frothy Milk" selection button. The coffee maker starts a rinse cycle. 5. Repeatedly press the "Frothy Milk" selection button until the container is empty. 6. Fill a second container with 500 ml of clean tap water. 7. Again, repeatedly press the "Frothy Milk" selection button until the container is empty.

7.4 Cleaning the Milk Unit Harmful microorganisms can form in milk residues within a few days. Therefore, the milk unit and milk container should be cleaned regularly. 1. Pull the milk tube from the dispenser. 2. Disassemble the milk unit. 3. Rinse all parts with warm water. Use a soft, damp cloth and dishwashing liquid. 4. Reassemble the milk unit. Ensure that the milk unit is pushed upwards as far as possible during assembly.

7.5 Cleaning Program Using the cleaning program removes coffee oil residues with a coffee machine cleaning agent. The program should be run every two months or when indicated by the appliance. Use only Melitta® Perfect Clean cleaning tablets for automatic coffee machines. Follow the instructions on the cleaning tablet packaging. Caution! The cleaning agent causes eye irritation. In case of accidental contact, rinse eyes with clean water for several minutes. If symptoms persist, consult a doctor. The program takes approx. 15 minutes and should not be interrupted. The cleaning program runs in several stages. Progress is indicated by the number of displayed coffee beans. The lit "Clean" symbol indicates that the appliance needs cleaning. 1. Fill the water tank with tap water to the maximum fill level. Replace the water tank. 2. Press and hold the "Water/Service" button for more than 2 seconds to access Service Mode 1. 3. Press the "Water/Service" button repeatedly until the Clean symbol lights up. 4. Press and hold the "Water/Service" button for more than 2 seconds. The cleaning program starts. The Clean symbol flashes during the program. The Drip Tray symbol lights up. 5. Empty the drip tray and coffee ground container.

6. Place the drip tray without the coffee bean container and place the coffee ground container under the dispenser. The first stage starts. The appliance rinses twice. The Clean symbol flashes quickly. 7. Remove the brew group. Do not switch off the appliance. 8. Rinse the brew group under running water (see section 7.2, page 163). 9. Insert a cleaning tablet into the brew group. Insert the brew group into the appliance. The second stage starts. The appliance performs several rinse cycles. The Drip Tray symbol lights up. The third stage starts. 10. Empty the drip tray and coffee ground container. 11. Place the drip tray without the coffee bean container and place the coffee ground container under the dispenser. The fourth stage starts. Three coffee beans flash. The appliance performs several rinse cycles. The Drip Tray symbol lights up. 12. Empty the drip tray and coffee ground container. 13. Insert the drip tray with the coffee ground container. The appliance is ready for use. If the cleaning program is interrupted (e.g., by switching off), switch on the appliance again and perform the steps from step 10. The appliance is fully ready for use, even if it has not been completely cleaned. For thorough cleaning, run the cleaning program again.

7.6 "Descaling" Program Using the descaling program, you can remove limescale deposits. The program should be run every three months or when indicated by the appliance. The water tank must not contain a water filter during descaling. If you are using a water filter, remove it before descaling (see section 7.7, page 166). Use only Melitta® Anti Calc liquid descaler for automatic coffee machines. Caution! The descaler causes eye irritation. In case of accidental contact, rinse eyes with clean water for several minutes. If symptoms persist, consult a doctor. The program takes approx. 15 minutes and should not be interrupted. The cleaning program runs in several stages. Progress is indicated by the number of displayed coffee beans. The lit "Descale" symbol indicates that the appliance needs descaling. 1. Press and hold the "Water/Service" button for more than 2 seconds to access Service Mode 1. 2. Press the "Water/Service" button repeatedly until the Descale symbol lights up. 3. Press and hold the "Water/Service" button for more than 2 seconds. The descaling program starts. The Descale symbol flashes during the program. The first stage starts. The Drip Tray symbol lights up.

4. Empty the drip tray and coffee ground container. 5. Place the drip tray without the coffee bean container and place the coffee ground container under the dispenser. The Water symbol lights up. 6. Fill the water tank with 0.5 liters of descaler solution. Follow the instructions on the descaler packaging. 7. Replace the water tank. The second stage starts. The appliance performs several rinse cycles. The Drip Tray symbol lights up. 8. Empty the drip tray and coffee ground container. 9. Place the drip tray without the coffee bean container and place the coffee ground container under the dispenser. The Water symbol lights up. 10. Rinse the water tank thoroughly and fill it with fresh tap water. 11. Replace the water tank. The coffee maker starts a rinse cycle. The third stage starts. The coffee maker starts a rinse cycle. The Drip Tray symbol lights up. 12. Empty the drip tray and coffee ground container. 13. Insert the drip tray with the coffee ground container. The appliance is ready for use. If the descaling program is interrupted (e.g., by switching off), switch on the appliance again and perform the steps from step 8. The appliance is fully ready for use, even if it has not been completely descaled. For thorough descaling, run the descaling program again.

7.7 Water Filter Using a water filter extends the life of the appliance. The water filter filters calcium and harmful substances from tap water. When using a water filter and replacing it regularly, you only need to descale the appliance once a year. These figures assume that an average of six cups of coffee of 120 ml are prepared daily and that the filter is replaced on average 6 times a year. Only use Melitta® Pro Aqua filters for automatic coffee machines. Follow the instructions on the filter cartridge packaging. Use the included wrench to screw or unscrew the filter into the water tank.

Installing / Replacing the Water Filter Immerse the new water filter in a container with fresh tap water for a few minutes. The lit Filter symbol indicates that the water filter needs to be replaced. 1. Press and hold the "Water/Service" button for more than 2 seconds to access Service Mode 1. 2. Press the "Water/Service" button repeatedly until the Filter symbol lights up. 3. Press the "Coffee Strength" button until all coffee beans go out. 4. Press and hold the "Water/Service" button for more than 2 seconds to save the setting and exit service mode. The water filter is logged out. 8. Set the water hardness (see section 6.2, page 161).

The filter replacement program starts. The Filter symbol flashes during the program. The Drip Tray symbol lights up. 5. Empty the drip tray and coffee ground container. 6. Place the drip tray without the coffee bean container and place the coffee ground container under the dispenser. The Water symbol lights up. 7. Empty the water tank. 8. Insert a new filter into the water tank. 9. Fill the water tank with fresh tap water. 10. Replace the water tank. The filter is rinsed with water. 11. Empty the coffee ground container. 12. Insert the drip tray with the coffee ground container. The appliance is ready for use. Removing the Water Filter 1. Remove the water filter from the water tank. 2. Fill the water tank with fresh tap water. 3. Replace the water tank. 4. Press and hold the "Water/Service" button for more than 2 seconds to access Service Mode 1. 5. Press the "Water/Service" button repeatedly until the Filter symbol lights up. 6. Press the "Coffee Strength" button until all coffee beans go out. 7. Press and hold the "Water/Service" button for more than 2 seconds to save the setting and exit service mode. The water filter is logged out. 8. Set the water hardness (see section 6.2, page 161).

7.8 Factory Settings The appliance can be reset to factory settings. All personal settings will be lost. 1. Simultaneously press and hold the "Water/Service" and "Coffee Strength" buttons for more than 2 seconds to access Service Mode 2. 2. Press the "Water/Service" button repeatedly until the 2x symbol lights up. 3. Press the "Coffee Strength" button until all coffee beans go out. 4. Press the "Water/Service" operating button for more than 2 seconds to restore the appliance's factory settings and exit service mode. Press any selection button to exit service mode without resetting the factory settings.

7.9 Draining the Appliance When draining, residual water is removed from the appliance. The appliance should be drained if it is not used for a longer period, before transporting it, or if there is a risk of frost. If a water filter is used, it must first be removed from the water tank. 1. Simultaneously press and hold the "Water/Service" and "Coffee Strength" buttons for more than 2 seconds to access Service Mode 2. 2. Press the "Water/Service" button repeatedly until the Steam Dispensing symbol flashes. 3. Press and hold the "Water/Service" button for more than 2 seconds. The Water symbol lights up. 4. Remove the water tank. The draining process begins. The appliance switches off. 5. Replace the empty water tank.

8 Transport

If possible, transport the appliance in its original packaging. Loose parts must not be secured with adhesive or packing tape, as removing glue residue is very difficult. When sending the appliance to an authorized Melitta® service center, there is no need to send the drip tray. This way, scratches that may occur during transport can be prevented. Before transporting the appliance, perform the following steps: Drain the appliance (see section 7.9, page 167). Empty the drip tray and coffee ground container. Empty the water tank. Empty the coffee bean container. Clean the appliance (see section 7, page 163). Pack the appliance.

9 Disposal

Appliances marked with this symbol are subject to the European WEEE Directive No. 2012/19/EG (Waste Electrical and Electronic Equipment). Electrical appliances must not be disposed of with household waste. Dispose of the appliance in an environmentally friendly manner through appropriate collection systems.

10 Technical Data

11 Troubleshooting

If the actions described in the table do not resolve the fault, or if other damage occurs, please contact customer service. Telephone numbers (charged as local calls) can be found under the water tank lid or on the website under the "Service" tab.