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KLM1602

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602-SM-EN V002

English

KLM1602

Service Manual

Intelligent Fresh Ground Coffee Machine

32 33 33 36 37 38 38 39 39 40 41 42 43 43 44 45

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Contents

1. Introduction

2. Structure

3. Troubleshooting

4. Repair

2.1 Overview

2.2 Description of internal components

2.3 Water circuit

2.4 Schematic circuit diagram

2.5 Technical data

General warnings

Symbol description

3.1 Troubleshooting check list

3.2 Check list for minor failure

2.3.1 Overview of water circuit

2.3.2 Water circuit for making coffee

2.3.3 Water circuit for making hot water

4.1 Tools preparation

4.2 General disassembly

4.2.1 Disassemble exterior parts

4.2.2 Disassemble power cord

4.2.3 Disassemble brew unit

4.2.4 Disassemble valve support group

4.2.5 Disassemble flowmeter

4.2.6 Disassemble grinder group

4.2.7 Disassemble control panel group

4.2.8 Disassemble drainage valve group

4.2.9 Disassemble solenoid valve group

4.2.10 Disassemble pump group

4.2.11 Disassemble PCBA

4.2.12 Disassemble dispenser valve 2W

4.2.13 Disassemble thermoblock group

4.2.14 Disassemble drive motor group

Contents

5. Function test and maintenance

6. Explosive view

46 46 49 51 54

63 63 63 64 65

Contents

4.3 Precautions for maintenance and installation

Precautions for assembling

4.3.1 Brew unit group

4.3.2 Grinder group

4.3.3 Control panel group

5.1 Function test and test standards

5.2 Coffee machine maintenance

5.2.1 Coffee machine decalcifying

5.2.2 Rinse the brew unit

5.2.3 Wipe the coffee machine

1. Introduction

The manufacturer reserves the right to make product improvements. We guarantee that this manual respects the technological status at the time the machine is supplied.

We are open to any suggestions from technicians which may improve the product and the manual.

General warnings

Once the packaging has been removed make sure the appliance is in good condition; if you have any doubts, check the fault and contact the retailer or manufacturer directly.

Packaging must not be left where children can reach it as it is a potential hazard source.

The appliance must be installed in compliance with the safety standards in force in the country of use.

This appliance is completely safe only when it is connected to an effective earthing system that complies with the safety standards. Make sure that the mains power is sufficient for the energy required for the machine.

It is unadvisable to use extension leads or electrical adaptors for multiple sockets. If it is essential to use them, use only single adaptors or leads that comply with the current safety standards. Never exceed the capacity indicated on the adaptor or leads, or the maximum power indicated on the adaptor.

This appliance should only be used for what it has been designed. Any other use is considered improper and consequently dangerous. The manufacturer cannot be held responsible for any damages caused due to an erroneous or irrational use. The technician must remind the user about the safety standards to ensure correct operation of the appliance.

The use of an electrical appliance is subject to the safety standards.

If the customer decides not going to use the appliance for a long time, the power cable must be disconnected from the mains and empty the water container.

To guarantee that the coffee-maker works properly and efficiently, it is essential to follow the manufacturer’s instructions, and carrying out periodical maintenance and check of all the safety devices.

Always make sure that hands, or other parts of the body, never come within the range of the coffee dispensing spouts or those of steam and hot water so as not to be scalded.

The maintenance technician must inform the retailer or manufacturer promptly of any problems when installing or using the appliance.

The coffee machine must be used at the temperature between 5℃ and 40℃.

●

Introduction

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Introduction

Symbol description

Non-compliance with the operation, may cause electric shock, and threat to life.

Non-compliance with the operation may cause coffee machine damaged, or personal injury.

Non-compliance with the operation, may cause scalded or burned.

This symbol, if prompted, please carefully read information with it.

This symbol, if prompted, represents recycle.

2. Structure

2.1 Overview

Structure

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Drip tray decoration cover

Top cover

Cup support

Front cover right

Drip tray cover

Drip tray

Bean container lid

Water tank cover

Water tank ornament cover

Water tank

Front cover left

Export decorative cover

Structure

Bean container

Grinder adjustment knob

Ground coffee container lid

Hot water export

Coffee export

Back cover

Logo

Right side section

24 25 26 27 28 29

Left side section

Power line

Power switch

Americano button

Espresso button

Coffee button

Double cup

Coffee strength button

Setting button

Screen

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Structure

2.2 Description of internal components

Thermoblock

Solenoid valve 2W

Geared motor

Dispenser valve 2W

Support

PCBA

Pump

Drainage valve

Line pencil connector

Transformer

Base

Brew unit

Drip tray microswitch

Reed sensor

Flowmeter

Valve support

Control panel

Grinder group

Structure

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Structure

2.3.1 Overview of water circuit

2.3 Water circuit

Water tank

Sieve

Flowmeter

Pump

Pressure maintaining valve

Coffee thermoblock

Dispenser valve 2W

Drainage valve

Brew unit

Solenoid valve 2W

Beverage export

2.3.2 Water circuit for making coffee

Structure

Water tank

Sieve

Flowmeter

Pump

Pressure maintaining valve

Coffee thermoblock

Dispenser valve 2W

Drainage valve

Brew unit

Beverage export

2.3.3 Water circuit for making water

Structure

Water tank

Sieve

Flowmeter

Pump

Pressure maintaining valve

Coffee thermoblock

Solenoid valve 2W

Beverage export

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

5 6 7 8

13 14

Structure

Power switch

Data interface

LCD screen

HMI

Flowmeter

Drip tray microswitch

Reed sensor

LED light

Thermoblock

NTC

Feedback device

Solenoid valve 2W

Stepper motor

Drive motor

Transformer

Thermoblock fused-cord

Solenoid valve fused-cord

Pump

Filter

Terminal

Power line

Grinder motor

Microswitch

Communication cable

Power PCBA

2.4 Schematic circuit diagram

Structure

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

2.5 Technical data

Total voltage/power

China

Europe

220V/50HZ 1200W

230V/50HZ 1400W

Approvals CCC,CB,CE

Power ratings

Thermoblock

Pump

Solenoid valve 2W

Grinder motor

Drive motor

Dispenser valve motor

220V 1200W

230V/50HZ 48W ULKA EP4

230V/50Hz 9-12VA

DC 220V

DC 24V

Capacities

Water tank

Coffee grounds container

Coffee bean container

Coffee powder volume for brew unit

1.8L

15 Pieces

250g

MIN 5g; MAX 14g

Various data

Dimensions（length×width×height）

Cable Length

Net weight

450×302×370 mm

approx 1.5 m

approx 11.5kg

Troubleshooting

3. Troubleshooting check list

3.1

3.2

3.1.1

3.2.1.1

3.2.1.2

3.2.1.3

3.1.2

3.2.1

3.2.2

3.1 Troubleshooting check list

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Examine external damage of coffee machine

Examine the external moving parts

External parts are broken or damaged

Power cord damaged

Drip tray can not be installed in place

Drip tray can not be taken out

YES - If necessary - replace the external parts NO - continue to 3.1.2

YES - replace powder cord

Disassemble the external parts according to 4.2.1

Disassemble the powder cord according to 4.2.2

Data interface cover on the front panel shedding

YES - Reassemble the data interface cover fitted to the front panel group,item: 73000202 NO - continue to point 3. 2.2.2

Replace or repair the damaged components according to the front panel group explosive view 8810102001

Much coffee powder left on the base

Brew unit doesnot reset

YES - take out the drip tray, observe if there are lots of coffee powder on the base, clean the rest coffee powder NO - continue to 3.2.1.3

YES - 1. Take away the coffee ground container 2. Insert the drip tray into the coffee machine

3. Press ON/OFF 4. Take out the drip tray after the coffee machine reset and the screen appears ""HEATING"" 5. Put the coffee groud container on the drip tray and insert them into the coffee machine again NO - continue to 3.2.1.4

Drip tray group components damaged

YES - replace the components

Replace or repair the damaged components according to the drip tray explosive view 8810102001

3.2.1.4

3.2.2.1

3.2.2.2

Export blocked the drip tray

Brew unit does not reset, abnormal power off

YES - move the export up NO - continue to 3.2.2.2

YES - take the drip tray out when the machine in READY state NO - continue to 3.2.2.3

Restart more times if once is not enough

3.2.2.3

Brew unit is stucked by slag box coffee grounds

YES - Take out the drip tray, then remove the grounds container capacity, and clean up the coffee grounds inside

3.2.3.1

3.2.3.2

The following should be repaired or replaced water tank group

3.2.3

Replace or repair damaged components according to water tank explosive view 8810101020

YES - move valve body in order to make it reset NO - continue to 3.2.3.2

YES - replace components

Valve body is stucked, can not be reset

Components damaged

Water leakage from the bottom when taking out water tank or filling in water tank

3.2.4

3.2.4.1

YES - clean the coffee powder NO- continue to 3.2.4.1

Powder container cover can not be covered tightly

Lots of coffee powder left below the powder container cover

3.2

3.2.4.2

3.3.1.1

3.3.1.2

3.3.1.3

3.3.1.4

3.3.1

3.3

3.2.4

3.3.1.5

3.3.1.6

3.3.1.7

3.3.1.9

3.3.1.8

3.3.2.1

3.3.2.2

3.3.2.3

3.3.2

Examine the external moving parts

Powder container cover can not be covered tightly

Replace or repair damaged components according to bean container explosive view 8810101019

YES - replace powder container cover 79000123

Powder container cover deformed

Machine can not be powered on

Press On/Off to AUTO CHECKIN G and then to READY

YES - use proper voltage for the machine NO - continue to 3.3.1.2

YES - replug the powder cord to the powder socket NO - continue to 3.3.1.3

Improper voltage for the machine

Confirm if the powder cord connected correct

The following should be repaired by dismatling the machine

Disassemble and replace components according to 4.2.2

1. Disassemble control panel according to

4.2.8;

2. Disassemble microswitch and replace according to

4.3.4

YES - replacepowder cord NO - continue to 3.3.1.4

YES - replace microswitch 73000051(item X4G303K1BB) NO - continue to 3.3.1.5

Powder cord damaged

Powder switch damaged

The connector between PCB and powder switch does not work

YES - connect or repair power switch connector NO - continue to 3.3.1.6

1. Disassemble control panel according to

4.2.7;

2. Disassemble control panel,repair connection line according to 4.3.3

Disassemble right side section according to

4.2.1

Disassemble back cover according to 4.2.1

YES - connct or repair the transformer connector NO - continue to 3.3.1.7

YES - replace the fuse inside the line pencil connector NO - continue to 3.3.1.8

Transformer connector fell off or damaged

Fuse inside the line pencil connetor is damaged

Fuse on the PCBA is damaged

YES - replace the fuse on the PCBA NO - continue to 3.3.1.9

Disassemble right side section according to

4.2.1

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056

PCBA damaged

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

FILL WATER TANK on screen

YES - fill in the water tank NO - continue to 3.3.2.2

YES - place the water tank again NO - continue to 3.3.2.3

YES - clean water tank, knock the place near the ball in order to make the ball move inside water tank NO - continue to 3.3.2.4

No water in the water tank

The water tank does not install in place

The ball inside the water tank is sticked

The following should be replaced or repaired the water tank group

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

3.3.2.4

3.3.2.5

3.3.2.6

3.3.2.7

3.3

3.3.2

HMI damaged

3.3.3

3.3.3.1

3.3.3.2

3.3.3.3

3.3.3.4

3.3.3.5

3.3.3.6

3.3.4.2

3.3.2.8

3.3.4

3.3.4.1

Troubleshooting

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Press On/Off to AUTO CHECKIN G and then to READY

FILL WATER TANK on screen

YES - replace water tank group, item: 8810101020 NO - continue to 3.3.2.5

YES - replace water tank group, item: 8810101020 NO - continue to 3.3.2.6

The ball is fell off

Ball damaged

The following should be repaired by dismatling the machine

YES - replace reed sensor, item: 73000095 NO - continue to 3.3.2.7

YES - connect or repair power switch connector NO - continue to 3.3.2.8

Reed sensor damaged

Connector damaged

PCBA damaged

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056

INSTALL TRAY on screen

YES - clean rest coffee powder NO - continue to 3.3.3.2

YES - take out coffee grounds container, reinstall drip tray NO - continue to 3.3.3.3

Lots of coffee powder left on the base

Brew unit does not reset

The following should be repaired by disassembling or changing proper parts

YES - replace coffee grounds container frame item: 79000113 NO - continue to 3.3.3.4

YES - replace microswitch, item: 73000088 (X3C306N2LB) NO - continue to 3.3.3.5

YES - connect or repair microswitch connector, item: 78000022 NO - continue to 3.3.3.6

Replace or repair damaged components according to drip tray explosive view 8810102001

Coffee grounds container frame damaged

Drip tray microswitch damaged

Drip tray microswitch connector does not work

YES - replace or repair HMI, item: 78000055

1. Disassemble control panel according to

4.2.7;

EMPTY TRAY on screen

YES - clean up the terminal NO - continue to 3.3.4.2

YES - clean up the terminal NO - continue to 3.3.4.3

Disassemble back cover according to

4.2.1

Drip tray terminal is wet

Base terminal is wet

3.3

3.3.4

3.3.5

3.3.4.3

3.3.5.1

3.3.5.2

3.3.5.3

3.3.5.4

3.3.6.1

3.3.6.2

3.3.6.3

3.3.6

Troubleshooting

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

YES - replace or repair PCBA, item: 78000056

Disassemble PCBA, replace and repair according to 4.2.11

PCBA damaged

The following should be repaired by dismatling the machine

Press On/Off to AUTO CHECKIN G and then to READY

EMPTY TRAY on screen

No water comes from coffee export when CLEANING

YES - power off the machine, restart (drainage will be reset when power on the machine) NO - continue to 3.3.5.2

Stepper motor in drainage valve does not reset( stepper motor still in the drainage position when making coffee)

The following should be repaired by dismatling the machine

Inside pipe connector damaged- water leakage(lots of water on the table)

YES - repair damaged pipe or connector NO - continue to 3.3.5.3

1. Disassemble drainage valve group according to 4.2.8;

2. Replace or repair damaged components according to drainage valve group explosive view 8810101006

YES - replace drainage valve group NO - continue to 3.3.5.4

Drainage valve group damaged

1. Dismantle brew unit according to 4.2.3;

2. Replace or repair damaged components according to brew unit explosive view 8810101016

YES - replace contropistone seal, item: 73000065 NO - continue to 3.3.5.5

Contropistone seal damaged

YES - replace brew unit coffee brewing unit,item: 881010032 NO - continue to 3.3.5.6

YES - replace brew unit seal, item: 73000035

Brew unit piston seal damaged

Brew unit waterseal damaged

3.3.5.5

3.3.5.6

A little water drops from coffee export when CLEANING ( normal volume should be more than 35ml)

After cleaning,when drainage starts,if the noise is very loud, it means brew unit filter screen get clogged

YES - enter menu-MAINTAINCE-CLEAN NO - continue to 3.3.6.2

Brew unit filter screen clogged

The following should be repaired by dismatling the machine

1. Disassemble drainage valve group according to 4.2.10;

2. Replace or repair damaged components according to drainage valve group explosive view 8810101006

YES - repair damaged pipe or connector NO - continue to 3.3.6.3

YES - replace drainage valve group NO - continue to 3.3.6.4

Inside pipe connector damaged-water leakage(lots of water on the table)

Drainage valve group damaged

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

3.3

3.4

3.3.6

3.3.6.4

3.3.6.5

3.3.6.6

3.4.1

3.4.3.1

3.4.3.3

3.4.3.4

3.4.3.2

YES - make buttons can be pressed or if damaged replace it, Item: 79000205 NO - continue to point 3.4.3.3

3.5.1

3.5.1.1

3.5.1.2

3.5.1.3

3.5.2

3.5.2.1

3.5.2.2

3.5

Press On/Off to AUTO CHECKIN G and then to READY

A little water drops from coffee export when CLEANING ( normal volume should be more than 35ml)

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

Contropistone seal damaged

YES - replace brew unit seal, item: 73000065 NO - continue to 3.3.6.5

1. Disassemble brew unit according to 4.2.3;

2. Replace or repair damaged components according to brew unit explosive view 8810101016

1. Disassemble drainage valve group according to 4.2.8;

2. Replace or repair damaged components according to drainage valve group explosive view 8810101006

YES - replace coffee brewing group, item: 8810101023 NO - continue to 3.3.6.6

YES - replace brew unit seal, item: 73000035

Brew unit piston seal damaged

Brew unit seal damaged

READY

Button becomes invalid

YES - restart the machine NO - continue to 3.4.3.2

System testing Malfunction

The following should be repaired or replaced by dismatling the machine

The button is stucked or damaged

1. Disassemble control panel according to 4.2.7;

2. Disassemble control panel components according to 4.3.3;

3. Replace or repair damaged components according to control panel explosive view 8810102001

The button on HMI damaged

YES - replace and repair HMI, item: 78000055 NO - continue to 3.4.3.4

HMI damaged

YES - replace and repair HMI, item: 78000055

The following should be repaired or replaced by dismatling the machine

Use coffee beans to make coffee

The grinder unit does not work( the screen shows working but no sounds from the grinder unit)

1. Disassemble grinder group according to 4.2.6;

2. Disassemble grinder group according to 4.2.3

YES - connect or replace connection line, item: 78000020 NO - continue to 3.5.1.2

Grinder group motor teminal or connection line damaged or dropped

Refer to 3.4.3.2

YES - replace grinder motor, item: 73000024 NO - continue to 3.5.1.4

Grinder motor damaged

Refer to 3.4.3.2

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056

PCBA grinder motor control circuit or components damaged

FILL BEAN displays on the screen after grinding (grinder unit works)

Coffee beans are too oil and sticked to the entrance of the grinder

YES - stir coffee beans inside the bean container NO - continue to 3.5.2.2

YES - replace to the finest level by adjusting coffee powder adjustment, continue to make 2 cups of coffee, the 3rd cup will be normal NO - continue to 3.5.2.3

Use over roasted coffee beans

3.5

3.5.2.5

3.5.2.6

3.5.2.7

3.5.2.8

3.5.2.3

3.5.2.4

3.5.2

3.5.2.9

3.5.2.10

3.5.3.1

3.5.3.2

3.5.3.3

3.5.3

Troubleshooting

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

YES - choose normal dry coffee beans NO - continue to 3.5.2.4

YES - use provided coffee powder spoon to unclog NO - continue to 3.5.2.5

Use wet coffee beans

Coffee powder channel is clogged

The following should be repaired by dismatling the machine

YES - take out bean container, and clean grinder entrance NO - continue to 3.5.2.6

Take out bean container according to

4.2.1

Grinder entrance is sticked

YES - take out bean container, lock screw pin worm drive, item: 79000020 NO - continue to 3.5.2.7

Screw pin worm drive is loose, the gap between conical burr and upper burr

Refer to 3.5.2.5

1. Take out grinder group according to 4.2.7;

2. Disassemble grinder group according to 4.3.3

3. According to grinder group explosive view 8810101002, replace or repair damaged components

YES - lock conical burr fastener,if support lower grinder damaged-replace it, item:7900019 NO - continue to 3.5.2.8

YES - take out grinder group, clean or replace conical burr and upper burr, item: 73000023 and 73000022 NO - continue to 3.5.2.9

The gap between conical burr and upper burr lessens or no gap

Water into grinder group

Use coffee beans to make coffee

FILL BEAN displays on the screen after grinding (grinder unit works)

If conical burr and upper burr is stucked by foreign object, there will be different regular noise when the conical buur and upper burr does not work

1. Disassemble grinder group according to 4.2.6;

2. Disassemble grinder group according to 4.3.3

3. According to grinder group explosive view 8810101002, replace or repair damaged components

YES - take out foreign object from grinder group NO - continue to 3.5.2.10

YES - replace parts in grinder group

Grinder group is stucked

Gear group or gear box damaged

Drainage valve stepper motor does not reset( stepper is still in drainage position when making coffee)

YES - power off the machine, restart (drainage will be reset when power on the machine) NO - continue to 3.5.3.2

No coffee comes out from coffee export

The following should be repaired by dismatling the machine

YES - repair damaged water pipes or pipe connector in drainage valve group NO - continue to 3.5.3.3

YES - repair pipes or pipe connector at the back of brew unit continue to - 3.5.3.4

Inside pipe connector damaged or dropped-water leakage(lots of water on the table ) Inside pipe connector damaged or dropped-coffee leakage(lots of coffee on the table)

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

3.5

3.5.3.5

3.5.3.6

3.5.3.7

3.5.3.8

3.5.4

3.5.3

3.5.3.4

3.5.5

3.5.3.9

Solenoid valve is damaged, all the water flowing from the hot water outlet

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

YES - replace drainage valve group NO - continue to 3.5.3.5

1. Disassemble drainage valve group according to 4.2.8;

2. Replace or repair damaged components according to drainage valve group explosive view 8810101006

YES - replace contropistone seal, item: 73000065 NO - continue to 3.5.3.6

Drainage valve group damaged, no water comes to brew unit; water drops to drip tray directly from drainage valve

Contropistone seal damaged, coffee comes out from the gap between coffee brewing box and contropistone

YES - replace coffee brewing group, item: 881010032 NO - continue to 3.5.3.7

Brew unit piston seal damaged

Refer to 3.5.3.5

YES - replace seal, item: 73000035 NO - continue to 3.5.3.8

Seal in brew unit damaged

Refer to 3.5.3.4

Use coffee beans to make coffee

No coffee comes out from coffee export

1. Disassemble brew unit according to 4.2.3;

2. Replace or repair damaged components according to brew unit explosive view 8810101016

YES - replace damaged parts in brew unit

Brew unit parts damaged; when making coffee ,coffee brewing box can not be closed exactly

Refer to 3.5.3.5

YES - replace damaged solenoid valve

1. Disassemble solenoid valve group according to 4.2.9;

2. Replace or repair damaged components according to soleniod valve explosive view 8810102009

Coffee temperatur e is too low( below 70°C)

YES - preheat coffee cup or increase the temperature of environment NO - continue to 3.5.4.2

The temperature of the cup is too low

The temperature of the water is too low

YES - use the pure water that around 25°C NO - continue to 3.5.4.3

YES - the temperature from the 3rd cup will meet the standard NO - continue to 3.5.4.4

YES - descale

Descale according to

5.2.2

The temperature is low, or standby time is too long; brew unit and water circuit is cold

Coffee machine needs descale (deposit decreased the efficiency of the thermoblock)

3.5.4.1

3.5.4.2

3.5.4.3

3.5.4.4

YES - fix NTC NO - continue to 3.5.5.2

NTC loose or unfixed

Replace or repair damaged components according to thermoblock group explosive view 8810102006

Disassemble PCBA,replace and repair according to

4.2.11

YES - replace NTC thermistor, item: 73000221 NO - continue to 3.5.5.3

YES - replace or repair PCBA, item: 78000056

NTC thermistor damaged

Program or PCBA damaged

3.5.5.1

3.5.5.2

3.5.5.3

Coffee temperatur e is too high( more than 89°C)

3.5.6.1

Descale according to

5.2.2

YES - descale NO - continue to 3.5.6.2

Coffee machine needs descale (deposit makes pipes inside the machine nearly clogged)

Coffee volume is too little (the volume of Espresso is less than 25ml)

3.5.6

3.5

3.5.6.3

3.5.6.4

3.5.6.5

3.5.6.6

3.5.6.7

3.5.6.8

3.5.6.9

3.5.7.1

3.5.7.2

3.5.6

3.5.8

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

YES - power off coffee machine, restart (drainage valve will be reset automaticly when restart) NO - continue to 3.5.6.3

Drainage valve stepper motor does not reset (when making coffee, stepper motor is still in drainage position)

The following should be repaired by dismatling the machine

YES - repair damaged pipe or connector in front of the drainage valve group NO - continue to 3.5.6.4

YES - repair pipe or connector at the back of brew unit NO - continue to 3.5.6.5

Inside pipe connector damaged or dropped-water leakage (water on the table)

Inside pipe connector damaged or dropped leads to coffee leakage (lots of coffee on the table)

Coffee volume is too little (the volume of Espresso is less than 25ml)

Use coffee beans to make coffee

Drainage valve group damaged, no water comes to brew unit, dropped to drip tray from drainage valve directly

YES - replace drainage valve group NO - continue to 3.5.6.5

1. Disassemble drainage valve group according to 4.2.8;

2. Replace or repair damaged components according to drainage valve group explosive view 8810101006

1. Disassemble brew unit according to 4.2.3;

2. Replace or repair damaged components according to brew unit explosive view 8810101016

YES - replace contropistone seal, item: 73000065 NO - continue to 3.5.6.7

Contropistone seal damaged,coffee sprays from the gap between coffee brewing box and contropistone

YES - replace coffee brewing group,item: 8810101023 NO - continue to 3.5.6.8

Brew unit piston seal damaged

Refer to 3.5.6.6

YES - replace water seal, item: 73000035 NO - continue to 3.5.6.9

YES - replace damaged parts in brew unit

Seal in brew unit damaged

Brew unit parts damaged; when making coffee, coffee brewing box can not be closed exactly

Refer to 3.5.6.6

3.5.6.2

Disassemble flowmeter and replace according to 4.2.5

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace flowmeter, item: 73000089 NO - continue to 3.5.7.2

YES - replace or repair PCBA, item: 78000056

Flowmeter damaged, magnet inside the flowmeter does not work

Program or PCBA damaged

YES - use proper, fresh coffee beans or coffee powder NO - continue to 3.5.8.2

YES - adjust the grinder adjustment rotate to the finest state, continue to make 2 cups of coffee, the 3rd cup will meet the standard NO - continue to 3.5.8.3

Improper coffee beans or coffee powder

Coffee powder is too rough

The following should be repaired by dismatling the machine

3.5.8.1

Too much coffee( the volume of Espresso is more than 100ml)

Coffee is to soft, no creama on the top

3.5.7

3.5.8.2

3.6

3.5.8

3.6.2

3.6.3

3.6.4

3.6.5

3.6.7

3.6.6

3.7.1

3.7

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

1. Disassemble grinder group according to 4.2.7;

2. Disassemble grinder group according to 4.3.3 according to grinder group explosive view 8810101002 replace or repair damaged components

YES - replace grinder group parts

Grinder group damaged or end of life

Coffee is to soft, no creama on the top

3.5.8.3

3.5

Use coffee beans to make coffee

Refer to

3.5.3

LACK OF POWDER displays on the screen

Not enough coffee powder

YES - use Kalerm provided coffee spoon, fill one full spoon of coffee powder NO - continue to 3.6.1.2

YES - open powder container cover, clear coffee powder channel

Coffee powder channel is clogged

No coffee comes out from coffee export

Coffee temperatur e is too low( below 75°C)

Coffee temperatur e is too high( more than 75°C)

Coffee volume is too little (the volume of Espresso is less than 25ml)

Coffee volume is too much (the volume of Espresso is more than 100ml)

Coffee is too soft, no crema on the top

Refer to

3.5.4

Refer to 3.5.5

Refer to 3.5.6

Refer to 3.5.7

Refer to 3.5.8

3.6.2.1

3.6.2.2

3.6.8

Use coffee powder to make coffee

The following should be repaired by dismatling the machine

Coffee machine needs descale(deposit makes pipes inside the machine nearly clogged )

YES - descale NO - continue to 3.7.1.2

Descale according to

5.2.2

Disassemble dispenser valve 2W according to

4.2.12

YES - repair or replace dispenser valve 2W, item: 8810101004 NO - continue to 3.7.1.3

YES - connect or replace leakage position NO - continue to 3.7.1.4

Dispenser valve 2W damaged and does not work (water dropped to drip tray)

Inside pipe connector damaged or dropped (water leaks to the table)

The following should be repaired by dismatling the machine

3.7.1.1

3.7.1.2

3.7.1.3

The process to make hot water

No water comes out from water export

Solenoid valve damaged

YES - replace solenoid valve,

Disassemble solenoid valve according to

4.2.9

3.7.1.4

3.7

3.7.2.1

3.7.2.2

3.7.2.3

3.7.3.1

3.7.3.2

3.7.2

3.7.3

3.7.4

3.8.1.1

3.8.1.2

3.8.1.3

3.8.1.4

3.8.1.5

3.8.1.6

3.8.1.7

3.8 3.8.1

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

The volume of hot water is too little

The process to make hot water

The volume of hot water is too much

Hot water temperatur e is too low

YES - descale NO - continue to 3.7.2.2

Coffee machine needs descale (deposit makes pipes inside the machine nearly clogged )

The following should be repaired by dismatling the machine

Disassemble dispenser valve 2W according to

4.2.12

Disassemble flow meter and replace according to 4.2.5

Disassemble PCBA,replace and repair according to

4.2.11

YES - repair or replace dispenser valve 2W, item: 8810101004 NO - continue to 3.7.2.3

YES - connect or replace leakage position NO - continue to 3.7.2.4

YES - replace flowmeter NO - continue to 3.7.3.2

YES - replace or repair PCBA, item: 78000056

Dispenser valve 2W damaged and does not work (water dropped to drip tray)

Inside pipe connector damaged or dropped (water leaks to the table)

Flowmeter damaged,magne nt does not work

Program or PCBA damaged

Refer to3. 5.4

1. Disassemble water inlet valve group according to 4.2.4

2. Replace or repair damaged components according to water inlet valve group explosive view 8810101011

According to drip tray group explosive view 8810101017

According to frame explosive view 8810101021

Disassemble appearance components according to 4.2.1

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair water inlet valve seal NO - continue to 3.12.1.2

YES - clean water sensor NO - continue to 3.12.1.3

YES - insert water sensor, item: 79000117 NO - continue to 3.12.1.4

YES - replace water sensor, item: 79000160 NO - continue to 3.12.1.5

YES - repair connector, item: 78000021 NO - continue to 3.12.1.6

YES - replace or repair PCBA, item: 78000056 NO - continue to 3.12.1.7

YES - replace connector or pipe

Water leakage between water inlet valve and water tank

Water sensor in front of drip tray is dirty

Water sensor inside the drip tray has fell off

Water sensor deformed

Line pencil does not work

PCBA damaged

Connector or pipe damaged- water leakage

Leakage checking

Lots of water on the table

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Problem after press ON/OFF to CLEANING till power off

Problems refer to 3.3

3.9

3.10

3.11

3.12.1.2

3.12.1.3

3.12.1.1

3.12.1.4

3.12.1

3.12.2.1

3.12.2.2

3.12.2.3

3.12.2

3.12.2.4

ERROR 5 Crossing signal failure

3.12.3

3.12.3.1

YES - Replace the power switch and wiring, item: 78000048 NO - continue to 3.12.3.2

Power switch short circuit

3.12.3.2

3.12.4

3.12.4.1

3.12.4.2

3.12.4.3

3.12

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

Decalcifyi ng

cleaning

Descale according to

5.2.1

Clean coffee machine according to 5.2.2

ERROR 1~7Coffee machine needs to be repaired when there is ERROR on the screen

ERROR 1 no power in thermobloc k or the thermobloc k temperatur e fuse

Thermoblock connection line fell off or damaged

YES - repair or replace coffee thermoblock connection line; item: 78000014 and 78000046 NO - continue to 3.12.1.3

According to explosive view 8810102006

1. Disassemble thermoblock group according to 4.2.15

2. Replace damaged components according to thermoblock group explosive view 8810102006

YES - replace steam thermoblock, item: 79000132 NO - continue to 3.12.1.4

Thermoblock does not work

System testing Malfunction

YES - Restart the machine NO - continue to 3.12.1.2

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056

PCBA damaged

System testing Malfunction

YES - Restart the machine NO - continue to 3.12.2.2

Replace damaged components according to explosive view 8810102006

YES - replace NTC, item: 73000221 NO - continue to 3.12.2.3

YES - connect or replace connection line, item: 73000221

Thermoblock NTC damaged

NTC connection line does not work

Refer to 3.12.2.1

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056

PCBA damaged

ERROR 2 NTC damaged

1. Disassemble front control group according to 4.2.7

2. Replace or repair damaged components according to explosive view 8810102001

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056

PCBA damaged

ERROR 6 press 5 times FILL UNIT, and it still can not be solved by pressing the rotarywater circuit is clogged

Disassemble appearance according to 4.2.1

1. Disassemble pump group according to

4.2.10;

2. Replace or repair damaged components according to pump group explosive view 8810101011

Disassemble flowmeter according to 4.2.5

YES - repair or replace pump and flowmeter connection line, item: 78000012 and 78000022 NO - continue to 3.12.4.2

YES - repair or replace pump, item: 73000053 NO - continue to 3.12.4.3

YES - repair or replace flowmeter, item: 73000089 NO - continue to 3.12.4.4

Pump and flowmeter connection line dropped or damaged

Pump damaged

Flowmeter clogged or damaged

3.12

3.12.4

3.12.4.6

YES - repair or replace damaged HMI,item:78000055

HMI damaged

3.12.4.4

3.12.4.5

3.13

3.13.1

3.13.2

3.13.2.1

3.13.2.2

3.13.2.3

3.13.3

3.12.5

3.12.5.1

3.12.5.2

3.12.5.3

3.13.4

System testing Malfunction

YES - Press any key to self-test NO - 3.13.4.2

3.13.4.1

3.13.4.2

Press any key 2-3 times in a row, until the self-test is completed

3.13.4.3

3.13.4.4

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

ERROR 6 press 5 times FILL UNIT, and it still can not be solved by pressing the rotarywater circuit is clogged

ERROR 1~7Coffee machine needs to be repaired when there is ERROR on the screen

YES - replace damaged parts NO - continue to 3.16.3.5

Dispenser valve internal structure damaged

Refer to 3.12.4.1

YES - repair or clear water circuit NO - continue to 3.12.4.6

Water circuit clogged

YES - connect or replace connection line bewteen HMI and PCBA, item: 78000048 NO - continue to 3.12.5.2

1. Disassemble control panel according to 4.2.7;

Disassemble control panel components according to 4.3.3;

3. Replace or repair damaged components according to control panel explosive view 8810102001

Connection line bewteen HMI and PCBA loose

YES - repair or replace damaged HMI,item:78000055 NO - continue to 3.12.5.3

HMI damaged

Refer to 3.12.5.1

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056

PCBA damaged

Press any button to fill unit accomplished

YES - press any button to fill unit

Water circuit lack of water

ERROR 7 communic ation mistakes between PCBA and HMI

UNIT EMPTY

PRESSURE HIGH (protective program during making coffee)

Information reminding

TEMPERATUR E HIGH

BREW UNIT RESET RESTART MACHINE

The following should be repaired by maintainers

Clean coffee machine according to 5.2.2

Clean coffee machine according to 5.2.3

YES - use suitable coffee bean or coffee powder NO - continue to 3.13.2.2

YES - clean brew unit NO - continue to3.13.2.3

YES - take out drip tray,clean filter screen

Use deep roasted coffee beans or use over fine coffee powder

Filter screen of brew unit clogged

Coffee powder clogged filter screen completely

YES - half an hour after restart the machine

System testing Malfunction

Brew unit is dirty,lots of coffee powder in contropistone

YES - clean and maintain brew unit NO - continue to 3.13.4.3

Clean coffee machine according to 5.2.2

The following should be repaired by maintainers

Disassemble PCBA, replace and repair according to 4.2.11

YES - replace or repair PCBA, item: 78000056 NO - continue to 3.13.4.4

PCBA damaged

YES - repair or replace coder circuit board, item: 78000005 NO - continue to 3.13.4.5

Replace or repair damaged components according to feedback device explosive view 8810101013

Feedback device damaged

3.13.4.5

3.13.4.6

3.13

3.13.4

Item Confirmation No. No. Cause Remedy RemarksProblem

Probability

Troubleshooting

Information reminding

BREW UNIT RESET RESTART MACHINE

1. Disassemble brew unit according to 4.2.3;

2. Replace or repair damaged components according to brew unit explosive view 8810101016

1. Disassemble geared motor group according to 4.2.14

2. Replace or repair damaged components according to geared motor group explosive view 8810101014

YES - replace or repair brew unit parts NO - continue to 3.16.4.4

YES - replace or repair transmission group parts

Brew unit parts damaged

Transmission group parts damaged

Troubleshooting

3.2.1.1 Reed sensor function

If there is water in water tank, but the screen displays FILL WATER TANK，put a magnet in left side section as the picture shows: if the screen does not display FILL WATER TANK anymore- water tank components damaged- replace components；If the screen still displays FILL WATER TANK- internal line faultdisassemble and repair the machine.

3.2.1.2 Drip tray microswitch function

If drip tray installed correctly, but the screen displays INSTALL TRAY-fill in a piece of paper in the position of microswitch as the picture shows and touch microswitch: if the screen does not display INSTALL TRAY any more-drip tray components damagedreplace components；if the screen still display NSTALL TRAY-internal line fault- disassemble and repair the machine.

3.2.1.3 Drip tray terminal function

Use a wire to connet the terminal on drip tray as the picture shows，and install to the machine correcttly. if the screen reminds EMPTY TRAY- terminal function is all right；If the screen does not remind EMPTY TRAY-internal line fault- disassemble and repair the machine.

3.2 Check list for minor failure

3.2.1 Function

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Troubleshooting

3.2.2.3 Check all the connection lines

3.2.2 Circuit

3.2.2.1 Check fuse inside line pencil connector

If the fuse is damaged, machine can not be started on.

3.2.1.4 Press button

Operation all the function buttons on the control panel to judge if the press buttons are all right，and confirm issues and causes according to check list 3.1.

3.2.2.2 Check driving motor fuse of PCBA

If fuse damaged，driving motor will not work and machine can not be started on.

Troubleshooting

3.2.2.5 Check all switches

The picture shows off-state.

When touch microswitch contactor, it is on-state.

3.2.3. Leakage

Take off drip tray layer board as the picture shows, fill drip tray microswitch with paper, and press rinse button

Check leakage of brew unit

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Troubleshooting

Check leakage of connectors

Repair

4. Repair

4.1 Tools preparation

Torx screwdriver（T6,T10,T15,T20,T25）

Slotted type screwdriver (3mm series)

Needle-nose pliers

Electronic scale Temperature tester

Multimeter

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

1 2

Repair

4.2 Disassemble process for components

1. Take out drip tray 2. Take out bean container lid group

4.2.1 Disassemble exterior parts

4.2.1.1 Take out movable parts

3. Take out water tank group

1. Rotate the Logo support according to the direction of the arrow

2. Dismantle 2 screws from the bottom of the Logo support

4.2.1.2 Disassemble back cover

1 2

3. Take out back cover according to the arrow direction

Repair

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

1. Disassemble the 2 screws from the bottom

2. Take out front cover right and front cover left separately according to the direction of the arrow

4.2.1.3 Disassemble front cover right and front cover left

1. Take out right side section according to the direction of the arrow

4.2.1.4 Disassemble right cover

1 2

1. Disassemble 2 screws from the left side of the top cover

2. Loose top cover and hook of the frame

4.2.1.6 Disassemble top cover

3. Take out top cover according to the direction of the arrow

1. Disassemble 4 screws from the coffee bean container, and take the coffee bean container out

4.2.1.5 Disassemble coffee bean container group

Repair

2 3

4.2.2 Disassemble power cord

1. Disassemble left side section according to the direction of the arrow

1. Refer to 4.2.1- Disassemble the exterior parts of the machine

4.2.1.7 Disassemble left cover

2. Disassemble 2 screws from the cable rack

3. Disassemble 1 screw from support, loose 3 screws inside the line pencil connector and take out the power cord

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Repair

4 4

5 6

4.2.3 Disassemble brew unit

1. Refer to 4.2.1- Disassemble exterior parts of the machine

2. Disassemble 3 screws, and take out frame support

3. Pull out silicon pipe from brew unit

4. Disassemble 3 screws from brew unit

5. Pull the brewing unit outward and rotate the gear clockwise to the position as the picture shows

6. Disassemble 1 screw from backside and take out brew unit

Repair

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

1. Refer to 4.2.1-disassemble exterior parts

Repair

4.2.4 Disassemble valve support group

2. Take out valve support according to the direction of the arrow and pull out silicon pipe

Note：There are 4 hooks between

valve support and base

4.2.5 Disassemble flowmeter

1. Refer to 4.2.1- Disassemble exterior parts

2. Pull out the flowmeter terminal, and pull out the flowmeter according to the arrow direction

3. Pull out the silicone pipe at two sides of the flowmeter, and take out flowmeter

2 3

2. Disassemble 4 cable racks

3. Pull out terminal on PCBA which connected to control panel

4. Pull out silicon pipe from the left side of the machine

4.2.6 Disassemble grinder group

1. Refer to 4.2.1.1-4.2.1.6-disassemble top cover

2. Disassemble 3 screws 3. Pull out grinder motor terminal from PCBA and take out grinder group

Repair

4.2.8 Disassemble control panel group

1. Refer to 4.2.1-disassemble exterior parts

5. Remove 1pcs screw and remove the switch,pull out the tuo terminals

6 7

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Repair

6. Disassemble 2 screws from the

support

7. Remove the decorative cover,disassemble 1pcs screw

8. Remove the front control panel from the main support,pull out the silicone pipe

4.2.8 Disassemble drainage valve group

1. Refer to4.2.1-disassemble exterior parts

2. Refer to4.2.3-disassemble brew unit group

3. Remove the spring clip,pull out the connector

4. Pull out dispenser valve terminal on PCBA, and take it out from the cable rack

2 3

Repair

5. Disassemble 4 screws from support

and take out drainage valve group

Note：There is a sealing element left at the bottom after taking out drainage valve group

4.2.9 Disassemble solenoid valve group

1. Refer to 4.2.1.1-4.2.1.4-disassemble right side section

2. Pull out 3pcs terminals on

soleniod valve

3. Disassemble 2 screws

4. Pull out the silicone pipe and spring clip,remove the solenoid valve

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Repair

4.2.10 Disassemble pump group

1. Refer to 4.2.1- Disassemble exterior parts of the machine

1. Pull out the flowmeter and pull out the silicone pip

2. Pull out the silicone pipe

4. Pull out pump terminal on PCBA,

and take it out from the cable rack

5. Take all cables out from the cable rack,pull out 3pcs screws ,remove the cable rack

6.Pull out the spring clip and teflon pipe,remove the pump

2 3

Repair

2. Pull out all the terminals on PCBA 3. Disassemble 4 screws on PCBA, and take out PCBA

1. Refer to 4.2.1.1-4.2.1.4-disassemble right side section

4.2.11 Disassemble PCBA

4.2.12 Disassemble dispenser valve 2W group

1. Refer to4.2.1.1-4.2.1.4-disassemble right side section

2. Pull out 2pcs spring clips and take out dispenser valve 2W

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Repair

4.2.13 Disassemble thermoblock group

2. Loose screw on the line pencil connector,pull out the terminal on filter

3. Pull out all the terminals on PCBA and take it off cable rack

4. Pull out the terminal on soleniod valve

5. Pull out the spring clip and teflon pipe

6. Pull out the spring clip and teflon pipe

7. Disassemble 2pcs screws

1. Refer to 4.2.1-disassemble exterior parts

Repair

8. Disassemble hooks from the support and take out thermoblock

4.2.14 Disassemble drive motor group

1. Refer to 4.2.1.1-4.2.1.4-disassemble right side section

2. Pull out the terminals on PCBA and take it off cable rack

3. Disassemble 2pcs screws ,remove the drive motor group

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Repair

4.3 Precautions for maintenance and installation

1. Disassemble the spool gear group according to the arrow direction

2. Disassemble the wiper, notice the hooks showed by the arrow

4.3.1 Brew unit group

1 2

3. Disassemble the 4 screws from the left and right cover

3 3

4. Disassemble 4 hooks from the top cover of the brew unit，take out top cover of brew unit

Note: deeper slot side should be installed to the front position of the brew unit. It should match the wiper

Repair

5. Disassemble five hooks at the back of the left and right cover， and take out the left and right cover

6. Take out connect part and reset base

5 6

7. Take out left and right pull plate and pull plate sleeve

8. Rotate the gear

7 8

9. Take out the contropistone

10. Take out the connector, pay attention to the direction of the spring.

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Repair

11. Deform brew unit frame with strength according to the arrow direction, and take out coffee brewing group

12. Disassemble release link，and take out piston

13. Disassemble the screw from contropistone, and take out filter screen

14. Disassemble seal from contropistone

Note: The bigger opening of the piston should face to the release link.

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

1 2

3 4

5 6

1. Disassemble the 3 hooks from the grinder adjustment sector and take out the grinder adjustment sector

2. Rotate the upper burr group anticlockwise

4.3.3 Grinder group

Repair

3. Disassemble the three hooks from the motor support for grinder, and take out the grinder adjustment ring

4. Disassemble 1 middle screw

5. Take out the line pencil and conical burr group

6. Take out 1 screw from the coffee powder hopper

9 10

11 12

Repair

7. Disassemble 3 screws from grinder support, and take out grinder support

8. Take out 3 screws from the gear box

9. Take out the 3 hooks from the gearbox, and then take out the coffee

10. Disassemble steel ball support and 34 pcs steel ball

11. Take out the epicyclic gear group B

12. Take out filler piece and the epicyclic gear group A

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

1 2

NOTE: the location of two

silicone tube, top tube for

coffee, bottom pipe for

water

Repair

13. Disassemble the 2 screws inside the gearbox, and take out the grinder motor

4.3.4 Control panel group

1. Pull out the terminal 2. Disassemble 2pcs screws

3. Remove the coffee outlet group

6 7

Repair

4. Disassemble 2pcs screws 5. Disassemble 2pcs hooks

6. Remove the decorative cover panel and the power button

7. Disassemble 2pcs hooks on both sides

8. Remove the HMI,pull out 3pcs terminals

9. Disassemble 2pcs hooks on both sides and remove the switch support

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

12 13

Repair

10. Remove the HMI group,disassemble 5pcs screws,pull out LCD terminal

11. Remove the HMI

12. Disassemble 2pcs hooks on both sides

13. Remove the LCD screen

Repair

1. When installing the support seal, the downside should be with bigger diameter.

1. Install the piston and release link into the coffee brewing unit, oil(MI-setral-61B) coating position should be as the picture shows.

1 1

Valve support group

Brew unit

2. Install the coffee brewing unit into the brew unit frame, and install reset base and connect part.

3. Assemble the pin seal and pin together to drainage valve connection. Note: the direction of the pin seal.

4. Coating the contropistone seal with lubricating oil(SYN-setral-Al/C 2-FD) and install to the contropistone, and then lock the filter screen.

3 4

5. Assemble the connector, ball and spring into contropistone. Pay attention to the arrow direction.

6. Assemble the already installed contropistone into the brew unit frame. Note: The direction of the contropistone should be the same as the picture showed.

5 6

Repair

7. Rotate the gear onto the brew unit frame, install the sleeve pipe, the small head of sleeve pipe should be inward.

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

8. Install the left and right pull plate and left and right cover on brew unit frame, oil (MI-setral-61B) coating position for left and right pull plate should be as the picture shows.

8 8

9. Install the brew unit top cover.

1 1

Note: Pay attention to the direction of the brew unit top cover, the deeper groove should be in front.

10. Lock the left side and right side cover screws.

10 10

Repair

6. Put the steel ball support and 34 roll steel ball into gearbox.

7. Install 3 grinder antivibration pads and 3 antivibration bushes into coffee powder container.

6 7

8. Install the coffee powder container into the gearbox, the bigger hook on the coffee powder container should compare to the bigger groove. Screw tightly.

9. Install the line pencil into the grinder motor, red line correspond to the red mark.

8 9

Note: The installation direction for the grinder antivibration pads and 3 antivibration bushes.

10. Insert the already installed grinder motor in the grinder support, and lock screws.

11. Install the coffee powder hopper on the coffee powder container, and lock the screw.

10 11

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Repair

16. Put the already installed support lower grinder into the coffee powder container and lock the screw.

17. Install the grinding adjustment spring and steel ball into the coffee powder container pillar.

16 17

Repair

12. Install 3 spring sleeves into the hole of the support lower grinder.

13. Install the screw pin worm drive and conical burr to support lower grindor.

12 13

14. Put 3 conical burr protective steel balls and spring into support lower grinder.

15. Put the felt ring into the already installed coffee powder container.

14 15

18. Install the grinder adjustment ring in the motor support for grinder.

19. Assemble upper burr, upper grinder support, upper grinder cover and support seal together.

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20. Insert the already installed upper burr into motor support for grinder, and adjust the gap between the conical burr and upper burr.

21. Install the grinder adjustment sensor to grinder adjustment ring . The position should be as the picture shows.

22. The already installed grinder group should be tested when the whole machine is installed. The thickness of the powder should be adjusted properly.

20 21

Repair

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

1. Empty tray

2. Dissolve decalcifier in the clean water, and pour into the water tank- the water inside the water tank should be half of the water tank.

3. Press the “P” button to enter the menu, press the button “<>” to select "menu", press the Set button to enter the settings menu.

4. Press the button “<>” to select "Maintenance ", press the “P” button to enter the maintenance setting menu.

5. Press the button “<>” to select "Descaling"

6. Press the button “<>” to select "OK", press the “P” button twice in a row to enter the descaling cleaning.

Function test and maintenance methods

5. Function test and maintenance methods

5.1 Function test and test standards

5.2 Coffee machine maintenance

5.2.1 Coffee machine decalcifying

Use Kalerm decalcifier only. It may damage machine if use other decalcifier. The whole process costs about 25 minutes.

70~88℃

80~90℃

40~60ml

80~120ml

230~265ml

90~120ml

10~20s

25~45s

70~90s

25~35s

Test Temperature Volume Time

espresso

coffee

Americano

Hot water

水位

Function test and maintenance methods

7. Enter descaling program, according to the display prompts (to be placed in a container with a capacity greater than 1L below coffee exports)

8. After the first cleaning, take out water tank and pour the rest water and clean water tank. Add fresh pure water again and install the water tank.

9. After the second cleaning, coffee machine starts preheating.

10. After preheating, the third cleaning starts.

11. The screen shows READY，cleaning is completed, then you can make coffee.

Daily descale comparison table

Water hardless level Descale cycle

●●●●

●●●○

●●○○

●○○○

around2~4weeks

around4~6weeks

around once per 2 months

around once per 3 months

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

1 1 1

1. When machine in READY state, press “P” button to enter in the program menu, press the button “<>” to select “menu”,press “P” button enter the setting menu.

2. Press the button “<>” to select "Maintenance", press the “P” button to enter the maintenance settings menu.

3. Press the button “<>” to select " clean

brew unit "

4. Press the button “<>” to selecct

“OK”,press the “P” button to enter the cleaning brew unit.

5. Follow screen prompts to clean brew unit,

cleaning brew unit process, it needs to open the

power cover, add cleaning tablets.

6. After cleaning, coffee machine enter the

Ready state.

5.2.2 Rinse the brew unit

Use Kalerm cleaning agent only. It may damage machine if use other cleaning agent. The whole process costs about 10 minutes.

5.2.3 Wipe the coffee machine

Power off and pull out plug before clean the inside machine. Do not put the machine in the water to avoid electric shock Do not use metal object to clean the machine. Do not clean any components by dish-washing machine.

Function test and maintenance methods

Function vtest and maintenance methods

2. Clean water tank Clean water tank by flowing water.

Dry the 2 terminals and the end of the drip tray.

1. Clean drip tray

3. Clean coffee bean container and the hopper Use dry rag or tissue clean rest oil inside bean container. Do not use water to wash bean container.

4. Clean hopper Use dry rag clean the channel of hopper. Do not use water to wash hopper channel.

Service Manual

Intelligent Fresh Ground Coffee Machine

KLM1602

Function vtest and maintenance methods

5. Clean the internal machine Clean base

6. Clean coffee machine. Use dry and soft rag to clean the appearance of the coffee machine.

Clean brew unit-coffee brewing box( position 1) and contropistone( position 3 and position 2 is the back side)

Repair

1. Assemble the grinder motor and gearbox together, and screw them tightly. The screw should be covered with loctite. The teeth of the gearbox should be coated with oil(MI-setral-61B). The red mark place should correspond to one hole of the gearbox.

1 1

2. Install 3 epicyclic gear A and 3 epicyclic gear pin A into epicyclic gear support A, and coat with oil(MI-setral-61B).

3. Install 3 epicyclic gear B and 3 epicyclic gear pin A into epicyclic gear support B, and coat with oil(MI-setral-61B).

2 3

Grinder group

4. Put the already installed epicyclic gear frame A into the gearbox, put 1 filler piece onto epicyclic gear frame A.

5. Put the already installed epicyclic gear frame B into gearbox.

4 5