Manitowoc merrychef eikon e2s Service Manual

Microwave Combination Oven

Read instructions before use

Merrychef eikon e2s

Service and Repair Manual CE – Original, GBR

Part Number 32Z3935

Contents

eikon e2s Service and Repair Manual CE 2

Contents

1

General information 4

1.1 EC Declaration of Conformity 5

1.2 Environmental protection 6

1.3 Important Information 6

1.4 Identifying your microwave combinati on oven 7

1.5 Structure of technical documentation 8

1.6 About this Service and Repair Manual 8

2 Design and function 10

2.1 Design and function of the microwave combination oven 11

2.2 Layout and function of the operating panel 12

3 For your safety 13

3.1 Basic safety code 14

3.2 Intended use of your microwave combination oven 21

3.3 Warning signs on your microwave combination oven 22

3.4 Summary of hazards 24

3.5 Hazards and safety precautions when moving the appliance 26

3.6 Hazards and safety precautions when setting up the appliance 27

3.7 Hazards and safety precautions during installing 28

3.8 Hazards and safety precautions when preparing appliance for use 29

3.9 Hazards and safety precautions during cleaning 30

3.10 Hazards and safety precautions during servicing and repair 32

3.11 Hazards and safety precautions when taking the appliance out of service 34

3.12 Safety devices 35

3.13 Requirements to be met by personnel and working positions 37

3.14 Personal protective equipment 38

4 Setting up the applianc e 40

4.1 Safe working when setting up the applia nce 41

4.2 Requirements for the installation location 42

4.3 Mounting the appliance on a work surface 43

5 Installation 44

5.1 Safe working during electrical installation 45

5.2 Planning the electrical installation 46

5.3 Electrical installation requirements 47

6 Preparing the applia nc e for use 49

6.1 Safe working when preparing the appliance for use 50

6.2 Procedure for preparing the appliance for use 52

6.3 Start page 54

6.4 The keyboard screen 55

6.5 Using a USB stick 56

7 Cleaning procedures 58

7.1 Daily cleaning tasks 59

7.2 Cleaning chemicals 59

Contents

eikon e2s Service and Repair Manual CE 3

7.3 Items required for cleaning 60

7.4 Safe working when cleaning 61

7.5 Cleaning procedures 63

7.5.1 Cool down procedure before cleaning 64

7.5.2 Cleaning instructions 66

8 Technical data 71

8.1 Technical data 72

8.2 Dimensional drawings 74

9 Diagnostics 75

9.1 Checking the condition of your appliance 76

9.2 Errors and diagnostics 80

9.3 Fault finding 87

10 Tests 91

10.1 Safe working when testing components 92

10.2 Requirements 94

10.3 Testing selected components (casing mounted) 94

10.4 High voltage components (casing removed) 103

10.5 Mains voltage components (casing re moved) 106

11 Oven firmware 107

11.1 Firmware Updates 107

12 Replacing components 123

12.1 Safe working when replacing appliance p ar ts 124

12.2 Overview 126

12.3 Removing / fitting the casing 131

12.4 Removing / fitting the door assembly 134

12.5 Replacing a magnetron 139

12.6 Replacing the cooling fan 144

12.7 Replacing the QTS (Quick Touch Screen) assembly 146

12.8 Replacing the SRB (Smart Relay Board) 151

12.9 Replacing the touchscreen overlay 153

12.10 Adjusting the door microswitches / interlocks 155

12.11 Replacing the stirrer motor 157

12.12 Replacing the convection fan motor 161

12.13 Replacing a transformer (high voltage) 163

12.14 Removing the convection fan motor speed controller 166

12.15 Overview – further components 168

13 Circuit diagrams and boards 174

13.1 SRB / QTS circuit boards 175

13.2 Circuit diagrams 178

14 Commissioning the appliance 180

1 General information

eikon e2s Service and Repair Manual CE 4

1 General information

Purpose of this chapter

This chapter shows you how to identify your microwave combination oven and provides guidance on
using this manual.

Contents

This chapter contains the following topics:

EC Declaration of Conformity 5
Environmental protection 6
Important Information 6
Identifying your microwave combination oven 7
Structure of technical documentation 8
About this Service and Repair Manual 8

Page

1 General information

eikon e2s Service and Repair Manual CE 5

eikon e2s

Commercial

RoHS 2011/65/EU

MD 2006/42/EC

IEC 61000

IEC 61000

IEC 61000

IEC 61000

IEC 61000

IEC

IEC 61000

Table 6

Table 9

Table 9

CISPR 11:2009 Class A

CISPR 11:2009 Class A

1.1 EC Declaration of Conformi ty

Manufacturer

Authorised Representative (Brand Headquarters) Factory

Manitowoc Foodservice UK Limited Manitowoc Foodservice UK Limited
Ashbourne House, The Guildway, Provincial Park, Nether Lane,
Old Portsmouth Road Ecclesfield
Guildford GU3 1LR Sheffield S35 9ZX
United Kingdom United Kingdom

Equipment details

Generic Model Number
Description

Declaration of Conformity with directives and standards

The manufacturer hereby declares that this commercial combination microwave oven complies with the
following directives and standards.

Combination Microwave Oven

Compliance with Directives

This commercial combination microwave oven complies with the relevant provisions of the following
European Directives:

EMC 2004/108/EC

Harmonised standards applied

This commercial combination microwave oven complies with the relevant requirements of the following
European standards:

EN 60335-2-90:2006 +A1 (excluding Annex EE ship board requirements)
EN 60335-1:2012
EN 62233:2008
EN 55014-2:1997+A2:2008 in accordance with Category IV requirements

- Electrostatic discharge

- Radiated RF interference

- Fast transient common mode, AC port

- Mains surge, AC port

- RF current, common mode, AC port

- Mains voltage dips and interruptions

- Flicker
EN 55011:2009+A1:2010 Classification: Class A, Group 2

- Mains terminal disturbance voltage

- Radiated disturbance, magnetic field

- Radiated disturbance, electric field
AS/NZS CISPR 11

- Radiated disturbance

- Conducted disturbance

-4-2

-4-3

-4-4

-4-5

-4-6

61000-4-11

-3-11

1 General information

eikon e2s Service and Repair Manual CE 6

Mr Philip Radford

Manufacturer

Place and Date of issue: Guildford, 31st July 2015

Vice President Products: Merrychef

(on behalf of the Authorised Representative)

Quality and environmental manage ment

Manitowoc Foodservice UK Limited (Sheffield) employs a quality management system in accordance
with EN ISO 9001:2008 and a certified environmental management system in accordance with EN ISO

14001.

1.2 Environmental protection

Statement of principles

Our customers' expectations, the legal regulations and standards and our company's own reputation set
the quality and service for all our products.

We have an environmental management policy that not only ensures compliance with all environmental
regulations and laws, but also commits us to continuous improvement of our green credentials.

We have developed a quality and environmental management system in order to guarantee the con­tinued manufacture of high-quality products and to be sure of meeting our environmental targets.

This system satisfies the requirements of ISO 9001:2008 and ISO 14001:2004.

Environmental protection procedures

We observe the following procedures:

 Use of RoHS2-compliant produc ts
 REACH chemical law
 Recycling of electronic waste
 Environmentally friendly disposal of old appliances via the manufacturer

Join us in our commitment to protect the environment.

1.3 Important Information

Users are cautioned that maintenance and repairs should be perf ormed by a Merrychef® authorised
service agent using genuine Merrychef
respect to any product that has been improperly installed, adjusted, operated or not maintained in
accordance with national and loc al codes or insta ll ati o n instructions provided with the product, or an y
product that has its serial number defaced, obliterated or removed, or which has been modified or
repaired using unauthorised parts or by unauthorised service agents. For a list of authorised service
agents please refer to your distributor.

®

replacement parts. Merrychef® will have no obligation with

1 General information

eikon e2s Service and Repair Manual CE 7

1

Model number

eikon

2

Elements of the item
number

Label

Meaning

Model

e2s

Power output
convection

D 2200W
F 2200W / 1300W

G 2200W / 900W

Power output
microwave

B 2000W (High Power
version)

X 1000W (Standard Power
version)

Voltage

30 230V

MV5 220

MV6 208

00 200V

20 220V

Frequency

5 50Hz

6 60Hz

Lead

A

Example: H = L+N+E
(4mm EU)

Plug A

Example: E = 3

Communication

L USB + LAN

U USB

Version

A, B A, B (pre

1, 2, ...

1, 2, ... (serial production)

Accessory / C ustomer

"

CL "Classic" exterior

WW Specific customer

Region / Country

EU Europe

US United States of America

3

Elements of the
serial number

Label

Meaning

Year

15 2015

16, ...

2016, ...

Month of manufacture

January

02, ...

February, ...

Place of manufacture

2130

Sheffield (UK)

Production number

12345

4 Technical data

5 Date of manufacture

1.4 Identifying your micr ow a ve com bina t ion oven

Position of nameplate

The nameplate is located on the rear of your microwave combination oven.

e2s

of manufacture

CF

01

- Z

- Z

Trend" exterior

-230V / 50Hz

-240V / 60Hz

-pin plug

-production)

1 General information

eikon e2s Service and Repair Manual CE 8

Tasks

All servicing and repair work

Purpose



















Provides information on installi ng the electrical supply

Explains the procedure for preparing the appliance for first

1.5 Structure of technical documentation

Contents

The technical documentation for the microwave combination oven includes the following documents:

 Installation and Operating Manual
 Service and Repair Manual (this document)

1.6 About this Service and Repair Ma nual

Purpose

This Service and Repair Manual is intended for all people who work with the microwave combination
oven, and provides them with the necessary information for carrying out servicing and repair work
properly and safely.

Who should read the Service and Repair Manual

Name of target group

Trained service technicians

Parts of this document that must be read without fail

If you do not follow the information in thi s document, you risk potentially fatal injury and prop­erty damage.

To guarantee safety, all people who work with the microwave combination oven must have read and
understood the following parts of this document before starting any work:

 The chapter 'For your safety' on page 13
 The sections that describe the activity to be carried out

Chapters in the service and repair manual

Chapter/section

General information

Design and function

For your safety

Moving the appliance

Setting up the appliance

Installation
Preparing the app liance for us e

Shows you how to identify your appliance
Provides guidance on using this Service and Repair Manual

Specifies the intended use of the appliance
Explains the functions of the appliance and shows the position of its compo-

Describes the hazards posed by the appliance and suitable preventive
It is important that you read this chapter carefully.

Specifies the basic appliance dimensions
Specifies the requirements for the installation position
Explains how to convey the appliance to the installation position

Explains how to unpack th e appliance and specif ies the part s supplie d with the
Explains how to set up the appliance

nents

measures

appliance

-time use

1 General information

eikon e2s Service and Repair Manual CE 9

Purpose







Contains the technical data and dime

Contains a catalogue of potential errors and faults and specifies the required
actions

Contains instructions about testing various components of the appliance

Explains the procedure to update the firmware of t

Contains instructions for removing and fitting the appliance parts in order to
repair a defective appliance

Shows electrical circuit diagrams

Contains checklists which actions to take when preparing the appliance for first
time

Meaning

Warns of potential injuries. Heed all the warning notices that
symbol to avoid potential injuries or death.

Consequences

Death / serious injury (irreversible)

Death / serious injury (irreversible)

Minor injury (reversible)
Damage to property

Chapter/section

Cleaning procedures

Technical data
Diagnostics

Tests
Firmware
Replacing components

Circuit diagrams and boards
Commissioning the appliance

Safety alert symbol

Safety alert symbol

Explains the principles of the cleaning met hod s
Contains the cleaning instructions
Describes the cleaning chemicals and how to prepare them for use
Contains the instructions for working procedures during cleaning
Contains and refers to the instructions for handling operations on the micro-

wave combination oven regularly performed during cleaning

nsional drawings

he appliance

and circuit boards

-use and recommissioning it after service/repair.

Form of warning notices

The warning notices are categorized according to the following hazard levels:

Hazard level

Likelihood

Immediate risk

Potential risk

Potential risk

NOTICE

Potential risk

Decimal points

Decimal points are used throughout this manual in any language available.

appear after this

2 Design and function

eikon e2s Service and Repair Manual CE 10

2 Design and function

Purpose of this chapter

This chapter describes the design and construction of the microwave combination oven and explains its
functions.

Contents

This chapter contains the following topics:

Design and function of the microwave combination oven 11
Layout and function of the operating panel 12

Page

2 Design and function

eikon e2s Service and Repair Manual CE 11

Name

Function

ON/OFF appliance switch

Used to turn the microwave combination oven on and off.
Turning

supply.

easyToUCH® screen
control panel

When the appliance is sw it c he d on t he easyToUCH ® s creen illu min ates the
user interface.

See '

Nameplate
(no

Located on the rear panel of the appliance the nameplate states the serial
number, mod el type and ele ctrical specifications.

USB port

A USB soc ket located und er the cover a llows updates to programs stor ed on
the appliance.

See USB MenuConnect®
See '

cooking profiles.

Air outlets
(no picture)

Air used to cool internal components and steam from the cavity escape
through the air outlet vents located on the rear of
outlets must be kept free fr om obstruct ion and t hey will not all ow microwav e
energy to escape into the environment.

Appliance door

The door is a precision
interlocks. Always keep it

See

Air filter

The air filter situated at the lower front of the appliance is part of the
ventilation system. Keep it fre e of obstru ction and clea n it daily as descr ibed
under
without the air filter fitted.

Door handle

The door handle is a r igid bar w hich is pulled dow nwar ds an d away from the
appliance to open it.

2.1 Design and function of the micr ow ave combination oven

Parts and their function

Item
1

2

3

4

5

6

7

picture)

this switch off does not isolate the appliance from the electricity

Cooking procedures' for details.

User Manual.

Cooking procedures' section of this manual, for details of updating

the appliance. The air

-made energy barrier with three microwave safety
clean and do not use it to support heavy objects.

'Cleaning procedures' o n page 58.

‘Cleaning procedures’ on page 58. The appliance will not operate

8

2 Design and function

eikon e2s Service and Repair Manual CE 12

Name

Function

Door seals

The door seals ensure a t ight seal ar ound the door .
and check regularly for si gns o f da mag e. At the first sign of wear h av e them
replaced by a Merrychef approved service agent.

See

Air diffuser
(not fitted to all appliances)

Keep the air diffuser cle an and free of debris. Take great care when cleaning
this area of the appliance noting the different requirements shown unde

‘

11

Cavity

The cavity (cooking chamber) is constructed from stainless steel and used
for cooking products. Keep it clean by following the cleaning instructions in
the

Name

ON/OFF appliance switch

Touchscreen

USB port

Item
9

10

Alway s keep them clean

'Cleaning procedures' o n page 58.

r

Cleaning procedures’ on page 58 in this manual.

Material

The interior and exterior structure of the appliance is made of stainless steel in either a brushed finish or
colour coated.

2.2 Layout and function of the oper a ti ng panel

Elements and their function

‘Cleaning procedures’ on page 58 section of this manual.

Item
1
2

3

Function

Switches the microwave combination oven on and off.

Central controls of the appliance

 Appliance operated by touching icons on touchscreen pages
 Status displays

For connecting a USB memory stick

3 For your safety

eikon e2s Service and Repair Manual CE 13

3 For your safety

Purpose of this chapter

This chapter provides you with all the information you need in order to use the microwave combination
oven safely without putting yourself or others at risk.

This is a particularly important cha pter that you must read through carefully.

Contents

This chapter contains the following topics:

Basic safety code 14
Intended use of your microwave combination oven 21
Warning signs on your microwave combination oven 22
Summary of hazards 24
Hazards and safety precautions when moving the appliance 26
Hazards and safety precautions when setting up the appliance 27
Hazards and safety precautions during installing 28
Hazards and safety precautions when preparing appliance for use 29
Hazards and safety precautions during cleaning 30
Hazards and safety precautions during servicing and repair 32
Hazards and safety precautions when taking the appliance out of service 34
Safety devices 35
Requirements to be met by personnel and working positions 37
Personal protective equipment 38

Page

3 For your safety

eikon e2s Service and Repair Manual CE 14

3.1 Basic safety code

Object of this safety code

This safety code aims to ensure that all persons who use the microwave combination oven have a
thorough knowledge of the hazards and safety precautions, and that they follow the warning notices
given in the user manual and on the appliance. If you do not follow this safety code, you risk potentially
fatal injury and property damage.

Referring to the user manuals inclu ded in th e customer documentation

Follow the instructions below:

 Read in full the chapter 'For Your Safety' on page 13 and the chapters that relate to your work.
 Always keep to hand the manuals included in the customer documentation for reference.
 Pass on the user manuals included in the customer documentation with the microwave combination

oven if it changes ownership.

Personal protective equipment for your personnel

Instruct your personnel to wear the correct personal protective equipment specified in the section

'Personal protective equipment' on page 38 in the 'For your safety‘ chapter for the relevant tasks.

Ground rules for installation

Installation must comply with all national and regional laws and regulations and comply with the local
regulations of the relevant utility companies and local authorities and with other relevant requirements.

Working with the microwave combination oven

Follow the instructions below:
 Only those persons who satisfy the requirements stipulated in this installation and oper at in g m anual

are permitted to use the microwave combination oven.

 Only use the microwave combination oven for the specified use. Never, under any circumstances, use

the microwave combination oven for other purposes.

 Take all the safety precautions specified in this installation and operating manual and on the micro-

wave combination oven. In particular, use the prescribed personal protective equipment.

 Only stand in the working positions specified.
 Do not make any changes to the microwave combination oven, e. g. removing parts or fitting

un-approved parts. In particular, you must not disable any safety devices.

IMPORTANT SAFETY INSTRUCTIONS

When using electrical appliances basic safety precautions should be followed,
including the following:

To reduce the risk of burns, electric shock, fire, injury to persons, or exposure to
excessive microwave energy:

 Read all instructions before using the appliance.
 Install or locate this appliance only in accordance with the provided installation

instructions.

3 For your safety

eikon e2s Service and Repair Manual CE 15

Restrictions on use

 Only use utensils that are suitable for use in microwave combination ovens.

See 'Procedure for preparing the appliance for use'.

 Do not use corrosive chemicals or vapors in this appliance. This type of oven

is specifically designed to heat, cook or toast food. It is not designed for
industrial or laboratory use.

 Never use the appliance to heat alcohol, e. g. brandy, rum, etc. Food con-

taining alcohol can more easily catch fire if overheated. Observe caution and
do not leave the appliance unattended.

 Never attempt to deep fry in the oven.
 Eggs in their shell and whole hard boiled eggs should not be heated in mi-

crowave ovens since they may explode even after microwave heating has
ended.

 Do not operate the appliance using microwave only or combination function

without food or liquid inside the cooking chamber as this may result in over­heating and may cause damage.

 The appliance should not be used to dry linen.

 Liquids and other foods must not be heated in completely sealed containers

as the build-up of steam may cause them to explode.

 Do not attempt to operate the appliance with: an object caught in the door,

door that does not close properly; a damaged door, hinge, latch, sealing
surface or without food in the oven.

Precautions when using the microwave combination oven

 Microwave heating of beverages can result in delayed eruptive boiling.

Therefore care must be taken when handling the container.

 When handling hot liquids, foods and containers, care should be taken to

avoid scalds and burns.

 As with any cooking appliance, care should be taken to avoid combustion of

the items within the appliance.

Instructions for safe us e of the mi crow a ve c om bination oven

 When heating liquids using microwave only or combination function, the

contents should be stirred prior to heating to help prevent eruptive boiling.

3 For your safety

eikon e2s Service and Repair Manual CE 16

 The contents of feeding bottles and baby food jars must be stirred or shaken

and the temperature checked before consumption, in order to avoid burns.

 Items should be unwrapped when using convection and combination func-

tions.

 Excess fat should be removed during ‘roasting’ and before lifting heavy con-

tainers from the oven.

 Food with a skin, e. g. potatoes, apples, sausages, etc. should be pierced

before heating.

 When heating food in plastic or paper containers, keep an eye on the oven

due to the possibility of ignition.

 Food in combustible plastic or paper containers should be transferred to a

microwave/oven proof container to avoid the possibility of ignition.

 In the event of glass breaking or shattering within the oven, ensure that food is

totally free of glass particles. If in doubt, dispose of any food that was in the
oven at the time of the breakage.

 Switch off the appliance at the end of all the cooking sessions for that day.

Requirements to be met b y operating personnel

 This appliance is not intended for use by persons (including children) with

reduced physical sensory or mental capabilities or lack of experience and
knowledge unless they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and user maintenance
shall not be made by children.

 It is hazardous for anyone other than a competent person to carry out any

service or repair operation that involves the removal of any cover which gives
protection against exposure to microwave energy. See 'Requirements to be

met by personnel, working positions' on page 37.

Requirements relati ng t o t he operating condition of the microw a ve
combination oven

 As with all electrical appliances, it is recommended to have the electrical

connections inspected at least once a year.

 This appliance must be grounded. Connect only to a properly grounded outlet.

See 'Planning the electrical iInstallation' on page 46.

 Never remove the external covers of the appliance.
 Never remove any fixed internal parts of the appliance.

3 For your safety

eikon e2s Service and Repair Manual CE 17

 Never tamper with the control panel, door, seals, or any other part of the

appliance.

 Never hang dish towels or cloths on any part of the appliance.

 If the door or door seal is damaged, the appliance must not be operated until it

has been repaired by a competent person. See 'Requirements to be met by
personnel, working positions' on page 37.

 The appliance must not be operated without the air filter in place.
 If the supply cord is damaged, it must be replaced by the manufacturer, its

service agent or similarly qualified persons in order to avoid a hazard.

Requirements relati ng t o t he operating environment of the micro­wave combination oven

 The minimum height of free space necessary above the top surface of the

appliance is 50mm (2”).

 The floor adjacent to the appliance may be slippery. Clean up spillages

immediately.

 This appliance is not intended for mobile use, such as in marine or vehicle

applications.

Cleaning requirement s

 The appliance should be cleaned regularly and any food deposits removed.
 The cooking chamber of the appliance and the door seals should be cleaned

frequently . Failure to maintain the appliance in a clean condition could lead to
deterioration of the surface that could adversely affect the life of the appliance
and possibly result in a hazardous situation.

 The appliance should not be cleaned with a water jet.
 Details for cleaning door seals, cavities and adjacent parts are provided in the

'Cleaning procedures' section of this manual.

 The appliance must be disconnected from its power supply during mainte-

nance and when replacing parts. It is not necessary to disconnect the appli­ance from the power supply during routine daily cleaning tasks.

 When cleaning surfaces of door and oven that come together on closing the

door see the instructions on cleaning the door surface in the 'Cleaning pro-

cedures' on page 58 section of this manual.

Emergency instructions

 If smoke is observed: switch off the appliance. Unplug or isolate it from the

electrical supply and keep the door closed in order to stifle any flames.

3 For your safety

eikon e2s Service and Repair Manual CE 18

More on this ...

Related topics



Summary of hazards 24



Hazards and safety precautions during cleaning 30



Hazards and safety precautions when moving the appliance 26



Hazards and safety precautions when setting up the appliance 27



Hazards and safety precautions during installing 28



Hazards and safety precautions when preparing appliance for use 29



Hazards and safety precautions when taking the appliance out of service 34



Safety devices 35



Requirements to be met by personnel and working positions 37



Personal protective equipment 38

3 For your safety

eikon e2s Service and Repair Manual CE 19

3.

lated 10 M resistor.

10.

IMPORTANT

This manual provides technical guidance for technicians who have successfully undertaken a
recognized product familiarization and training course run by Merrychef to carry out ser­vice/repair tasks to the appliance/s shown on the front cover of this manual w hi ch must not be
used for any other make or model of appliance.

Please remember that it is wiser not to attempt a service task if you are unsure of being able to
complete it competently, quickly, and above all safely.

T o av oid injury to yourself or others and to protect the appliance from possible damage, ensure
you have read and understand all the relevant instructions and ALWAYS follow the Safety
Codes when servicing an oven.

1.

Ensure the electrical supply is locked-off to prevent the oven from being inad­vertently powered up.

2.

Do not leave the oven unattended without the ov en panels fitted and keep wi thin
sight of other personnel when testing the oven, ensuring persons other than
trained engineers are denied access.

The minimum number of panels should be removed and the high voltage ca­pacitors must be discharged before working on the oven using a suitably insu-

4.

Temporary insulation should be used to prevent accidental contact with dan­gerous conductors.

5.

Do not touch any internal wiring or connectors within the oven, whether you
believe it is live or not and avoid touching the metalwork (casing, panels, etc) of
the oven with your body.

6.

Only use electrically rated screwdrivers for adjusting ‘Pots’ etc., ensuring the tool
touches nothing else.

7.

Ensure the test equipment is set correctly before use.

8.

Test equipment such as meter test leads or clamps must be fitted and removed
whilst the unit is dead, for each and every test.

9.

Do not undertake functional magnetron testing with the panels of the casing
removed.

Avoid touching the test equipment, unless necessary for the operation.

11.

Upon completion of a service follow the steps for commissioning the oven under
the "Commissioning the appliance" section of this manual.

3 For your safety

eikon e2s Service and Repair Manual CE 20

1.

Evidence of dropping or abuse.

released to the owner.

IMPORTANT

To Service T e chnicians:
Precautions to be observed before and during servicing to avoid possible exposure to exces-

sive microwave energy.

Do not operate or allow the oven to be operated with the door open.

2.

Make the following safety checks on all ovens to be serviced before activating
the magnetron or other microwave source, and make repairs as necessary:

 Interlock operation.
 Proper door closing.
 Seal and sealing surfaces (arcing, wear, and other damage).
 Damage to or loosening of hinges and latches.



3.

Before turning on microwave power for any service test or inspection within the
microwave generating compartments, check the magnetron, wave guide or
transmission line, and cavity for proper alignment, integrity and connections.

4.

Any defective or misadjusted components in the interlock, monitor, door seal,
and microwave generation and transmission systems shall be repaired, re­placed, or adjusted by procedures described in this manual before the oven is

5.

A microwave leakage check should be performed on each oven prior to release
to the owner.

3 For your safety

eikon e2s Service and Repair Manual CE 21

3.2 Intended use of your microwave combination oven

Intended use of your microwave combination oven

The microwave combination oven must only be used for the purposes specified below:
 The microwave combination oven is designed and built solely for cooking different foodstuffs in

containers approved by the manufacturer. Microwave, convection and impingement are used for this
purpose.

 The microwave combination oven is intended solely for professional, commercial use.

Restrictions on use

Some materials are not allowed to be heated in the microwave combination oven:

 No dry powder or granulated material
 No highly flammable objects with a flash point below 270°C / 518°F, such as highly flammable oils,

fats or cloths (kitchen cloths)

 No food in sealed tins or jars

Requirements to be met by personnel

 The microwave combination oven must only be operated and installed by personnel who satisfy

specific requirements. Please refer to 'Requirements to be met by personnel, working positions' on
page 37 for the training and qualifications requirements.

 Personnel must be aware of the risks and regulations associated with handling heavy loads.

Requirements relating to the operati ng condition of the microwave combination oven

 Do not operate the microwave combination oven unless it has been properly transported, set up,

installed and placed into operation as indicated in this manual and the person responsible for placing
it into operation has confirmed this.

 The microwave combination oven must only be operated when all safety devices and protective

equipment are fitted, in working order and fixed properly in place.

 The manufacturer's regulations for operation and servicing of the microwave combination oven must

be observed.

Requirements relating to the operati ng environment of the microwave combination oven

Specified operating environment for the microwave combination oven:

 The ambient temperature lies between +4°C / 40°F and +35°C / 95°F
 Not a toxic or potentially explosive atmosphere
 Dry kitchen floor to reduce the risk of accidents

Specified properties of the installation location:

 No fire alarm, no sprinkler system directly above the appliance
 No flammable materials, gases or liquids above, on, under or in the vicinity of the appliance
 It must be possible to set up the microwave combination oven in the installation position so that it

cannot tip over or slide about. The supporting surface must comply with these requirements.

Mandatory restrictions on use:
 Appliance must not be operated outdoors and not be shifted or moved during use

Cleaning requirements

 Use only cleaning chemicals that have been approved by the manufacturer.
 High-pressure cleaners or water jets must not be used for cleaning.
 The appliance must not be treated with alkali or acid solutions or exposed to acid fumes.

3 For your safety

eikon e2s Service and Repair Manual CE 22

3.3 Warning signs on your microwave combinati on oven

Warning and safety signs

Mandatory warning signs

The following warning signs / notices must be attached to the microwave combination oven and optional
accessories in the area indicated so as to be easily visible at all times.

3 For your safety

eikon e2s Service and Repair Manual CE 23

Warning sign

respecting the minimum clearances.

Safety symbol

Protective Earth (Ground)

Equipotential bonding

Area
1

Description

Microwaves warning
There is a risk of external and inter nal burns of body part s following ex posure t o
microwave energy.

2

Electric shock warning
There is a risk of electric shock if the appliance is serviced without discon­necting the electrical supply.

3

Fire / electric shock warning
There is a risk of fire / electric shock if the appliance is operated without

4

Hot surface warning
There is a risk of burns from high temperatures inside the cavity and on the

inside of the appliance door.

5

Electric shock warning
There is a risk of electric shock if the electrical power is not connected to a
properly grounded outlet.

Safety symbols

The following safety symbols be attached to the microwave combination oven in the area indicated so as
to be easily visible at all times.

Area
6

Description

7

3 For your safety

eikon e2s Service and Repair Manual CE 24

3.4 Summar y of hazards

General rules for dealing with hazards and safety precautions

The microwave combination oven is designed to protect the user from all hazards that can reasonably
be avoided by design measures.

The actual purpose of the microwave combination oven, however, means that there are still residual
risks; you must therefore take precautions to avoid them. A safety device can provide you with a certain
degree of protection against some of these hazards. You must ensure, however, that these safety
devices are in place and in working order.

The nature of these residual risks and what effect they have are described below.

Hazard points

The following illustration shows a Merrychef e2s microwave combination oven:

Excessive microwave energy

The microwave combination oven generates microwave energy . An operation with an open or damaged
door or cavity can result in external and internal burns of body parts following exposure to microwave
energy.

Heat generation (1)

The microwave combination oven becomes hot inside the cavity and on the inside of the appliance door.
This poses a risk of burns on hot surfaces inside the microwave combination oven, and also on hot
appliance parts, food containers and other accessories used for cooking.

Hot steam / vapour (2)

When cooking food the microwave combination oven may generate hot steam and vapour which
escapes when the appliance door is opened and which is removed through the air vents on the rear of
the microwave combination oven when the appliance door is closed. This poses a risk of scalding from
hot steam when the appliance door is opened. Take particular care when opening the appliance door if
the top door edge is below your field of vision.

3 For your safety

eikon e2s Service and Repair Manual CE 25

Hot liquids

Foodstuffs are cooked in the microwave combination oven. These foodstuffs may also be liquid, or
liquefy during cooking. This poses a risk of scalding from hot liquids, which may be spilled if not handled
properly.

Live components (3)

The microwave combination oven contains live parts. This means a risk from live parts if the cover is not
in place.

Contact with cleaning chemicals

The microwave combination oven must be cleaned using special cleaning chemicals. This poses a risk
from cleaning chemicals, some of which can cause skin burns.

Parts moving against each other (4)

For various actions, such as opening/shutting the appliance door or cleaning the appliance door, there is
the risk that you will crush or cut your hand.

Undercooking of food products

Ensure all food is hot before serving to protect your guests from microbiological contamination of
foodstuffs.

3 For your safety

eikon e2s Service and Repair Manual CE 26

Where or in what situations does the
hazard arise?

Preventive action

When moving the appliance onto and off
the moving equipment






Where or in what situations does the
hazard arise?

Preventive action

When







When
supporting surface

Always observe the requirements for the
supporting surface while setting up the
appliance; see

installation location

3.5 Hazards and sa f ety precautions when moving the appli a nc e

Safety hazard: moving heavy weights

Danger

Risk of injury from over­stressing your body

Safety hazard: mechanical parts of the appliance

Danger

Risk of body parts being
crushed if the appliance is
dropped

Risk of body parts being
crushed if the appliance
tips over or falls off

moving the appliance

placing the appliance down on the

Use a forklift truck or pallet truck
Do not exceed safety limits for lifting

and carrying

Wear personal protective equipment

Use suitable handling gear
Move the appliance slowly and care-

fully, and secure it against tipping over

Make sure center of gravity i s balance d
Avoid jolts

'Requirements for the

' on page 42

3 For your safety

eikon e2s Service and Repair Manual CE 27

Where or in what situations does the
hazard arise?

Preventive action

When moving the appliance









Where or in what situations does the
hazard arise?

Preventive action

When lifting the appliance




When handling sheet





3.6 Hazards and sa f ety precautions when setting up the appl iance

Safety hazard: moving heavy weights

Danger

Risk of injury from over­stressing your body

Safety hazard: mechanical parts of the appliance

Danger

Risk of body parts being
crushed if the appliance is
dropped

Risk of cuts from sharp
edges

-metal parts

Use a forklift truck or pallet truck to

place the appliance in the installation
position or to move it to a new position

Always use the correct number of

persons and observe the limits speci­fied for lifting and carrying when ad­justing the appliance position

Observe the local occupational safety

regulations

Wear personal protective equipment

Make sure center of gravity i s balance d
Avoid jolts

Exercise caution when performing

these tasks

Wear personal protective equipment

3 For your safety

eikon e2s Service and Repair Manual CE 28

Where or in what situations does the
hazard arise?

Preventive action









Ensure that all electrical connections are
in
before putting the appliance into use

On the appliance and on adjacent metal
parts

Before preparing the appliance for use,
make sure that the appliance is co
nected to an equipotential bonding
system (EU).

Where or in what situations does the
hazard arise?

Preventive action

When opening or closing the door

Use the handle and av oid the d oor hinge s

3.7 Hazards and sa f ety precautions during inst alling

Safety hazard: electrical power

Danger

Risk of electric shock from
live parts

Safety hazard: mechanical parts of the appliance

Danger

Trapping fingers or body

Under covers
Under the operating panel
Along the mains power lead

Work on the electr ical system must only

be performed by qualified electricians
from an authorised service company

Professional working

perfect condition and fixed securely

n-

3 For your safety

eikon e2s Service and Repair Manual CE 29

Where or in what situations does the
hazard arise?

Preventive action









Ensure that all electrical connections are
in perfect condition and fixed securely
before putting the appliance into use

On the appliance and on adjacent metal
parts

Before preparing the appliance for use,
make sure that the appliance is co
nected to an equipotential bonding
system (EU).

3.8 Hazards and sa f ety precautions when prepari ng a pplia nc e for use

Safety hazard: electrical power

Danger

Risk of electric shock from
live parts

Under covers
Under the operating panel
Along the mains power lead

Work on the electrica l system must only

be performed by qualified electricians
from an authorised service company

Professional working

Additional safety hazards when preparing appliance for use

When preparing the appliance for use, read and follow the safety information given in this chapter and
also the following sections in the chapter 'For your safety' on page 13 in the user manual:

 'Hazards and safety precautions during operation'
 'Hazards and safety precautions during cleaning'

n-

3 For your safety

eikon e2s Service and Repair Manual CE 30

Where or in what situations does the
hazard arise?

Preventive action

For all cleaning actions










When corrosive
used

Only use those cleaning chemicals
specified under
page

Where or in what situations does the
hazard arise?

Preventive action

If the cavity has not been washed off
properly after cleaning.

Wash off the cavity using a clean cloth
and plenty of clean warm water,
wipe with a soft cloth or paper towel.

Where or in what situations does the
hazard arise?

Preventive action

Inside the entire cavity, including all parts
that are or were inside
such as




On the inside of the appliance door





In the entire cavity





In front of the appliance if the cavity is
being cooled by the





3.9 Hazards and sa f ety precautions during cleani ng

Safety hazard: cleaning chemicals

Danger

Risk of chemical burns or
irritation to skin, eyes and
respiratory system from
contact with cleaning
chemicals and their fumes

Safety hazard: contamination of foodstuffs

Danger

Risk of food contamination
from cleaning chemicals

cleaning chemicals are

Do not let cleaning chemicals come

into contact with your skin or eyes

Do not heat up the appliance if there

are cleaning chemicals inside

Never spray cleaning chemicals into

the cavity

Do not breathe in spray
Wear personal protective equipment

'Cleaning agents' on

59.

then

Safety hazard: heat

Danger

A risk of burns from hot
surfaces

Risk of scalding from hot
steam if water is sprayed
into the hot cavity

Risk of scalding from hot
steam

during cooking,

Racks
Containers, baking sheets, shelf grills

etc.

'Cool Down' function

Before starting cleaning tasks, w ait

until the cavity has cooled to below
50°C / 122°F or use the 'cool down'
function to cool the cavity

Wear specified protective clothing, in

particular protective gloves

Before starting clean ing work, wait until

the cavity has cooled to below 50°C /
122°F or use the 'Cool Down' function
to cool the cavity

Wear specified protective cl oth ing, in

particular protective gloves

Step back from the appliance to avoid

the hot steam and vapour escaping
through the open appliance door

Do not put your head inside the cavity

3 For your safety

eikon e2s Service and Repair Manual CE 31

Where or in what situations does the
hazard arise?

Preventive action

While appliances are being moved on a
wheeled platform

When moving the microwave combin
tion oven, take care not to wheel over the
electrical supply cables

While appliances are being moved on a
wheeled

Watch out for the connecting cables

While appliances are being moved on a
wheeled platform

Always remove any food from the
appliance before moving it

While
wheeled platform

Watch out for connected electrical cables

While cleaning behind appliances when
pulled forward

Exercise caution when performing this
action

Where or in what situations does the
hazard arise?

Preventive action

If the appliance comes into contact with
water





If appliances on wheeled stands start
moving unintentionally and the power
supply is pulled off





Where or in what situations does the
hazard arise?

Preventive action

When opening and closing
door

Exercise caution when performing this
action

Safety hazard: moving appliances supported on a wheeled base

Danger

All specified hazards

Risk of crushing of body
parts

Risk of scalding from hot
liquid food

Risk of electric shock from
live parts

Risk of tripping from
exposed cables

platform

appliances are being moved on a

a-

Safety hazard: electrical power

Danger

Risk of electric shock
caused by a short-circuit

Risk of electric shock from
live parts

Safety hazard: mechanical parts of the appliance

Danger

Risk of crushing to hands
and pinching of fingers

Do not wash down the outer case with

water

Always keep the USB cover closed

during cleaning

When operating the appliances, always

engage the parking brake on the
wheels

Check that wheel brakes are on before

operation each day

the appliance

3 For your safety

eikon e2s Service and Repair Manual CE 32

Where or in what situations does the
hazard arise?

Preventive action

Inside the entire cavity, including all parts
that are or were inside during cooking,
such as




On the inside of the appliance door





Where
hazard arise?

Preventive action

Risk of electric shock from




Work on the electrical system must only
be performed by qualified electricians
from an authorized customer service
company

Before removing the covers:









Make sure that the electrical connections
are intact and fixed securely before
plugging the appliance back into the
power supply.





Before putting the appliance back into
use, make sure that the appliance,
including all metallic accessories, is
connected to an equipotential bonding
system.

Where or in what
hazard arise?

Preventive action

During servicing work
When handling sheet





When the appliance is being moved e.g.
to gain better access to the connections

Always observe the requirements for the
supporting surface

3.10 Hazards and safety precautions during servicing and repair

Safety hazard: heat

Danger

A risk of burns from hot
surfaces

Safety hazard: electrical power

Danger

live parts

Racks
Containers, baking sheets, shelf grills

etc.

or in what situations does the

Under covers
Under the control panel

Before starting cleaning tasks, w ait

until the cavity has cooled to below
50°C / 122°F or use the 'cool down'
function to cool the cavity

Wear specified protective cl oth ing, in

particular protective gloves

Safety hazard: mechanical parts of the appliance

Danger

Risk of cuts from sharp
edges

Risk of body parts being
crushed if the appliance
tips over or falls off

On the appliance and on adjacent

metal parts

On the appliance and on adjacent

metallic accessories

situations does the

-metal parts

Switch off all connections to the power

supply

Take protective measures at every

power switch to ensure that the power
cannot be switched on again.

Wait 15 minutes to allow the DC bus

capacitors to discharge

Make sure that the appliance is

de-energized

Exercise caution when performing this

action

Wear personal protective equipment

3 For your safety

eikon e2s Service and Repair Manual CE 33

Where or in what situations
hazard arise?

Preventive action

When moving the appliance









Where or in what situations does the
hazard arise?

Preventive action

While appliances are being moved on a
wheeled platform

 Disconnect the appliance from the



Where or in what situations does the
hazard arise?

Preventive

If one of the electrical components is
defect, for example due to a short circuit,
or if the internal wiring is refitted inco
rectly when servicing/repairin





this manual.

Safety hazard: moving heavy weights

Danger

Risk of injury from over­stressing your body

Safety hazard: moving appliances supported on a wheeled base

Danger

Risk of crushing of body
parts

Risk of hands and feet
being pinched

Risk of electric shock from
live parts

does the

Use a forklift truck or pallet truck to

place the appliance in the installation
position or to move it to a new position

Always use the correct number of

persons and observe the limits speci­fied for lifting and carrying when ad­justing the appliance position

Observe the local occupational safety

regulations

Wear personal protective equipment

electrical supply before moving it

When servicing the appliances, always

engage the parking brake on the
wheels

Safety hazard: smoke or fire

Danger

Risk of fire / smoke from
defective electrical com­ponents or wrong electri ca l
connections.

action

Never use electrical spare components

which failed in a dedicated t est or which

r-

g the oven.

bear visible damages.

Carefully refit electrical connections

using the wiring diagrams provided in

3 For your safety

eikon e2s Service and Repair Manual CE 34

Where or in what situations does the
hazard arise?

Preventive action








Where or in what situations does the
hazard arise?

Preventive action

When moving the appliance onto and off
the moving equipment






Where or in what situations does the
hazard arise?

Preventive action

When the appliance is being moved e.g.
to gain better access to the connections

Always observe the requirements for the
supporting surface when taking the
appliance out of service; see

ments for the installation site

In front of the appliance

Ensure that the floor around the appl
ance is dry at all times

3.11 Hazards and safety precautions when taking the appliance out of service

Safety hazard: electrical power

Danger

Risk of electric shock from
live parts

Safety hazard: moving heavy weights

Danger

Risk of injury from over­stressing your body

Under covers
Under the operating panel

Work on the electr ical system must only

be performed by qualified electricians
from an authorized customer service
company

Professional working

Use a forklift truck or pallet truck
Do not exceed safety limits for lifting

and carrying

Wear personal protective equipment

Safety hazard: mechanical parts of the appliance

Danger

Risk of body parts being
crushed if the appliance
tips over or falls off

Risk of slipping on damp
kitchen floor

'Require-

' on page 42

i-

3 For your safety

eikon e2s Service and Repair Manual CE 35

Function





Prevents live parts from being
touched accidentally

Protects the user and outside
environment from microwave
energy leaking from the cavity

Protects the user and outside
environment from hot steam and
microw

Ensures that the microwave
generation system cannot be
powered when the door is open.

3.12 Safety devices

Meaning

The microwave combination oven has a number of safety devices to protect the user from hazards. It is
absolutely essential that all safety devices are fitted and in working order when operating the appliance.

Position and function

Item Safety device
1

Covers can only be
removed using a tool

2

Operating panel can
only be removed using a
tool

3

4

5
(no picture)

Door seal

Appliance door

Door interlocks:
Electric door sensor for
appliance door

Check

Prevents live parts from being

touched accidentally

Prevents access to the moving

fan from the wiring compartment

ave energy

Check that the covers are in place

Ensure that the operating panel is
in place

Check the door seal regularly for
signs of damage and replace it if
required.

Check the door regularly for
damage and replace it if required

Check door switch:
Action:

 Open the appliance door fully
 Press Start

Result:
Door open warning message

3 For your safety

eikon e2s Service and Repair Manual CE 36

Function





Prevent faulty components from
drawing too
causing potential fire hazard.

Item Safety device
6

(no picture,
installed by
customer)

7
(no picture)

Disconnection device

Internal fuses

Check

Installed by the customer close

to the appliance; easily visible
and accessible, 1- or 3-pole
action, minimum cont act se para­tion 3 mm.

Used to disconnect the appliance

from the power supply during
cleaning, repair and servicing
work and in case of danger

much current and

Action:

 Trip the disconnection device

Ensure that the internal fuses are
correctly rated

3 For your safety

eikon e2s Service and Repair Manual CE 37

Tasks

All servicing and repair work

3.13 Requirements to be met by personnel a nd w ork ing positions

Requirements to be met by operating personnel

Personnel Qualifications

Service technician

 Is an authorized service agent
 Has relevant technical training
 Is trained in the particular appliance
 Knows the regulations associated with

handling heavy loads

Working positions during servicing and repairs

The service area for staff during servicing and repair work is the area around the appliance.
If it is not possible to obtain full access to all sides of the appliance move it to a better location following

all manual handling recommendations.

3 For your safety

eikon e2s Service and Repair Manual CE 38

Personal protective equipment





Personal protective equipment

Work wear and personal protective
equipment depending on the job that
needs doing
regulations

Work wear as specified in cou
try
kitchen work, in particular:










Personal protective equipment

Work wear as specified in cou
try
kitchen work, in particular:






Work wear as specified in cou
try
kitchen work, in particular:






3.14 Pe rsonal protective equipment

Moving and setting up the appliance

Activity Materials used

 Conveying within the establishment
 Setting up the appliance on a work

surface, stand or in a stacking kit

 Setting up the appliance in the installa-

tion location

Installation, preparing for first-tim e use and taking out of service

Activity Materials used

Installing and removing (taking out of
operation) the electrical connection

 Preparing the appliance for first-time

use

 Instructing the user

Dismantling the appliance (taking out of
operation)

 Suitable lifting gear
 Forklift truck or pallet

truck

Tools and equipment
depending on the task

Tools and equipment
depending on the task

 Suitable lifting gear
 Forklift truck or pallet

truck

Protective gloves
Safety boots
Hard hat (e.g. when heavy loads are

being lifted, working overhead, ...)

as specified in national

n-

-specific standards and directives for

Protective clothing
Heat protective gl ov es (co mpl i ant with

EN 407 in European Union)

Safety boots
Protective gloves

Safety boots
Hard hat (e.g. when heavy loads are

being lifted, working overhead)

Operation

Activity Materials used

Loading / removing food None

Removing and fitting parts Tools and equipment

depend on the task

n-

-specific standards and directives for

Protective clothing
Heat protective gl ov es (co mpl i ant with

EN 407 in European Union)

Safety boots

n-

-specific standards and directives for

Protective clothing
Heat protective gl ov es (co mpl i ant with

EN 407 in European Union)

Safety boots

3 For your safety

eikon e2s Service and Repair Manual CE 39

Personal protective equipment

Items of protection equipment, d
pending on cleaning chemical being
used:









The EC safety datashe et for th e relevant
cle
precise specification of these it ems. An
up
the manufacturer.

Refer to the label on the cleaning
chemical concerned.

Follow the instructions given by the
manufacturer of the cleaning chemical
you are using

Follow the instructions given by the
manufacturer of the cleaning chemical
you are using

Protection equipment

Work wear and personal protective equipment depending on the job
that needs doing

Cleaning

Activity Materials used

 Cleaning the cavity by hand
 Handling spray bottles

Cleaning components and accessories
according to relevant instructions

Cleaning the outside of the appliance
case

 Cleaning chemicals

approved by the manu­facturer

 Protective chemicals

approved by the manu­facturer

Common household
detergent: mild on skin,
alkali-free, pH-neutral and
odourless

Common household
stainless steel cleaner or
hard surface cleaner

e-

Breathing mask
Safety goggles
Protective gloves
Protective clothing/apron

aning chemical contains a more

-to-date copy can be obtained from

Repairs

Activity

All repair work

as specified in national regulations

4 Setting up the appliance

eikon e2s Service and Repair Manual CE 40

4 Setting up the applianc e

Purpose of this chapter

This chapter provides information on how to set up your appliance.
This chapter is intended for the user and for a qualified member of staff from an authorized service

company.

Contents

This chapter contains the following topics:

Safe working when setting up the appliance 41
Requirements for the installation location 42
Mounting the appliance on a work surface 43

Page

4 Setting up the appliance

eikon e2s Service and Repair Manual CE 41

4.1 Safe working when set ti ng up t he appl iance

For your safety

Before starting work, familiarize yourself with the hazards described in 'Hazards and safety precautions
when setting up the appliance' on page 27.

Eligibility of personnel for setting up the appliance

Personnel eligible for setting up the appliance:
 Only qualified personnel from an authorized service company are permitted to set up the appliance.

Regulations for setting up the appliance

Local and national standards and regulations relating to workplaces in catering kitchens must be
observed.

The rules and regulations of the local authorities and supply companies that apply to the installation
location concerned must be observed.

Personal protective equipment

Wear the following personal protective equipment specified in the section 'Personal protective equip­ment' on page 38 of the 'For your safety‘ chapter for the relevant tasks.

Moving heavy loads

Risk of injury from lifting incorrectly

When lifting the appliance, the weight of the appliance may lead to injuries, especially in the area of the
torso.

 Use a forklift truck or pallet truck to place the appliance in the installation position or to move it to a

new position.

 When shifting the appliance into the correct position, use enough people for the weight of the

appliance when lifting it (value depe nding on age and gender). Observe the local occupational
safety regulations.

 Wear personal protective equipment.

Unsuitable supporting surface

Risk of crushing if the appliance tips over or falls off

Body parts can be crushed if the appliance tips over or falls off.

 Make sure that the appliance is never placed on an unsuitable supporting surface.

4 Setting up the appliance

eikon e2s Service and Repair Manual CE 42

[kg] 61.0

[kg] 51.7

4.2 Requirements for the installation location

Meaning

This section contains information to help you choose a suitable installation location for the microwave
combination oven. Inspect the intended installation location carefully to ensure it is suitable before taking
the appliance there and starting the installation.

Rules for setting up the appliance safely

To prevent hazards that arise from the installation site and environment of the appliances, the following
rules must be observed:

 It must be possible to comply with the operating conditions. For operating conditions, see 'Re-

quirements relating to the operating environment of the microwave combination oven' on page 21.

 There is a risk of fire from the heat emitted from hot surfaces. Therefore flammable materials, gases

or liquids must not be located near, on or below the appliance. When choosing where to install the
appliance it is essential to remember this requirement together with the minimum space required for
the appliance.

 Heat sources in the vicinity must lie at a minimum distance of 500 mm / 20 in.
 The appliance must be installed so that there is absolutely no possibility that liquid from the appliance

or liquid coming from cooking processes can reach deep-fat fryers or appliances that use hot, un­covered fat. Deep-fat fryers or appliances that use hot, uncovered fat that are located in the vicinity
must lie at a minimum distance of 500 mm / 20 in.

 The appliance must not be installed directly under a fire alarm or sprinkler system. Fire alarm in-

stallations and sprinkler systems must be set up to handle the level of steam and vapour expected to
escape from the appliance when the door is opened.

 It must be possible to set up the supporting structure for the appliance (work surface, stand or

stacking kit) in the installation position so that it cannot tip over or slide about. The supporting surface
must satisfy the requirements listed below.

 Vibrations must generally be avoided when using wheeled oven stands or wheeled stacking kits.

Requirements for the supporting sur face

The supporting surface must have the following properties:

 The supporting surface must be flat and level.
 The supporting surface must be able to bear the in-use weight of the appliance plus the weight of the

structure supporting the appliance.

 The structure supporting the appliance (work surface or stand) must be able to bear the in-use weight

of the appliance.

Empty weight of appliance
e2s High Power version [lbs] 134

e2s Standard Power version [lbs] 114

Actual space requirements

Far more room than the specified minimum space requirement is needed in front of the appliances to
operate the microwave combination ovens safely, in particular to handle hot food safely.

Larger wall gaps are generally recommended to provide access for servicing.
In the installation location, the following parts must not be covered, adjusted or blocked (see also

'Design and function of the microwave combination oven' on page 11):

 Air vent on the rear of the appliance
 Air filter at the front of the appliance

4 Setting up the appliance

eikon e2s Service and Repair Manual CE 43

Meaning

Space required

Safety clearance from the top

[in] 2 [mm]

50

Depth requirement, appliance door open at 90°

[in] 12.2 [mm]

310

Safety clearance on left

[in] 0 [mm]

0

Minimum space required

The following diagram and table show the space required for the appliance for different installation and
operating situations. They also show the minimum horizontal distances from adjacent walls and sur­faces. The safety clearance on the top must always be complied with.

A
B

-/right-hand side / at rear

4.3 Mounting the appliance on a work surface

Rules for setting up the appliance safely

Observe the following rules to ensure that the appliance is installed in a stable situation:
 It must be possible to set up the work surface in the installation position so that it cannot tip over or

slide about. The supporting surface must comply with the requirements.

 The work top must have a non-slip surface.

5 Installation

eikon e2s Service and Repair Manual CE 44

5 Installation

Purpose of this chapter

This chapter explains how to connect your microwave combination oven to the electrical supply.

Contents

This chapter contains the following topics:

Safe working during electrical installation 45
Planning the electrical installation 46
Electrical installation requirements 47

Page

5 Installation

eikon e2s Service and Repair Manual CE 45

5.1 Safe working during elec tr ical installation

For your safety

Before starting work, familiarize yourself with the hazards described in 'Hazards and safety precautions
during installation' on pag e 28.

Eligibility of personnel for the electrical installation

Only electricians qualified under the terms of EN 50110-1 and from an authorized service company are
permitted to perform work on electrical equipment.

Regulations for the electrical installation

Observe the following requirement to prevent hazards caused by faulty electrical connections:
 The electrical supply must be connected in accordance with applicable local and national regulations

and regulations of the professional associations and of the relevant power supply company.

Personal protective equipment

Wear the personal protective equipment specified in the section 'Personal protective equipment' on
page 38 of the 'For your safety‘ chapter for the relevant tasks.

Electrically live components

Risk of electric shock from live parts

When the appliance is not connected to an equipotential bonding system, there is a risk of electric
shock from touching live parts.

 Make sure that any work on the electrical system is performed solely by a qualified electrician from

an authorized service company.

 Make sure that the electrical connections are intact and connected securely before putting the

appliance into use.

 Before preparing the appliance for use, make sure that the appliance, including all metallic acces-

sories, is connected to an equipotential bonding system.

5 Installation

eikon e2s Service and Repair Manual CE 46

Regulations

Fuse protection and connection of the appliance must comply with local regulations
and national installation requirements.

The appliance must be incorporated in an equipotential bonding system.
Equipotential bonding: electrical conn
trical equipment and any external conductive components are at an equal (or

practically equal) potential.

The installation regulations require protection by a residual
Suitable residual
used.
If the installation includes more than one appliance, one residual
must be provided for each appliance.

An easily ac cessi
tion of 3 mm must be installed close to the appliance. The appliance must be
connected via this disconnection device.
The disconnection device is used to disconnect the appliance from the elect
supply for cleaning, repair and installation work.

5.2 Planning the electric al ins t al la t ion

Meaning

It is crucial to the safe and reliable operation of the appliance that the electrical system is installed
carefully and correctly. All the rules and regulations listed here, and the described procedure, must be
strictly followed.

Rules for safe electrical installation of the appliances

Observe the following rules to prevent hazards caused by faulty electrical connections:
 The electrical supply must be connected in accordance with applicable local regulations of the

professional associations and of the relevant power supply company.

 The case of the appliance must be grounded in a suitable manner and connected to an equipotential

bonding system.

 If two microwave combination ovens are installed in a stacking kit, both cases of the appliances and

the stacking kit itself must be grounded in a suitable manner and connected to an equipotential
bonding system.

 For microwave combination ovens on a wheeled platform, the length of the mains power lead must

accommodate the degree of movement allowed to the appliance by the retaining device on the
wheeled platform. When moving the assembly (platform plus appliance), never place the mains
power lead under tension.

 All electrical connections must be checked when the appliance is prepared for first-time use to ensure

cables are laid correctly and connections are made properly.

Equipment provided by customer and electrical installation regulations

The table below shows what equipment must be provided by the customer and what regulations must be
observed when connecting the appliance.

Equipment

Fuse

Equipotential bonding

ection that ensures that the frames of elec-

Residual-current device
(RCD)

-current devices meeting the relevant national regulations must be

-current device (RCD).

-current device

Disconnection device

ble all-pole disconnection device with a minimum contact separa-

Fitted frequency-converter

rical

The appliance is fitted with one frequency converter (FC) and an EMC mains input filter.
These devices may result in a leakage current of more than 3.5 mA per FC drive.
Use a suitable RCD for the rated voltage.

5 Installation

eikon e2s Service and Repair Manual CE 47

Phase

Meaning

Single
Phase

UK models are fitted with a blue 32 A plug to IEC 60309
(EN 60309).

The circuit breakers should be rated at 32 A for 32 A and
16 A for 16 A plug configuratio ns and be T ime D elay , Motor
Start T y pe (Euro pean Type D).

UK 13 A m odels are fi tted w ith a mou lded pl ug to BS1363,
fused at 13A.

EU 16 A models are fit t ed with a moulded plug to CE E 7 /7
(Type F Schuko) rated at 16 A.

Twin
Phase

Twin Phase models should be connected as shown.
Circuit Breakers should be rated at 20 A or higher per

phase and be Time Delay, Motor Start Type (European
Type D).

An Equipotential Bonding point is provided on the rear
(GND) connection.

Properties of the residual-current device

The residual-current device (RCD) must have the following properties:

 Filter for filtering out RF currents
 “Time delayed" trip characteristic for RCD devices with trip threshold >30mA: prevents RCD being

tripped by charging currents of capacitors and parasitic capacitances when appliance is switched on.

 “Leakage current protection, type SI” trip characteristic for RCD devices with trip threshold ≥30mA:

insensitive to nuisance tripping.

5.3 Electrical install ati on requirements

Circuit Breakers

Establishments with standard (Type ‘B’) circuit breakers are sensitive to ‘surges’ which occur on
switching on freezers, refrigerators and other catering equipment, including microwave combination
ovens. Because of this, a Type ‘D’ circuit breaker (designed specifically for this type of equipment) must
be fitted. An individual, suitably rated circuit breaker should be fitted for each appliance installed.

Low impedance electrical supply

This commercial combination microwave oven complies with EN 61000-3-11. However, when con­necting sensitive equipment to the same supply as the appliance, the user should determine in con­sultation with the supply authority, if necessary, that a low impedance supply is used.

Electrical supply

Illustration

Equipotential bonding

panel of the appliance for independe nt Earth

5 Installation

eikon e2s Service and Repair Manual CE 48

Phase loading diagram

Explanation to phase loading diagram

Phase Loading

Loading per phase is not equal. Therefore it is recommended to connect other electrical equipment to
L3+N.

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 49

6 Preparing the applia nc e for us e

Purpose of this chapter

This chapter shows you how to put the microwave combination oven into operation and how to cook.

Contents

This chapter contains the following topics:

Safe working when preparing the appliance for use 50
Procedure for preparing the appliance for use 52
Start page 54
The keyboard screen 55
Using a USB stick 56

Page

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 50

6.1 Safe working when pre pa ring the appliance for use

For your safety when preparing the appliance for use

Before starting work, make sure that you are familiar with the hazards described under 'Hazards and
safety precautions when preparing appliance for use' on page 29 and in the chapter 'For your safety' in

the user manual.

Eligibility of personnel preparing the appliance for use and taking it out of service

Work performed on the appliance while preparing it for use is performed in special operating circum­stances (e.g. with safety covers removed) or includes activities that require personnel to have relevant
qualifications and appliance-specific knowledge that exceed the requirements for operating personnel.

The following requirements must be met by personnel:

 They are qualified employees of an authorized service company.
 Personnel have relevant training as a service engineer.
 Personnel have training specific to the appliance.

Personal protective equipment for pre paring the appliance for use

Wear the personal protective equipment specified in the section 'Personal protective equipment' on
page 38 of the 'For your safety‘ chapter for the relevant tasks.

Rules for safe operation of the appliance

To avoid hazards, the following rules must be observed during operation:
 The exhaust vent on the rear of the appliance, and the ventilation holes in the front of the appliance

base must not be cov ered, obstr uc ted or bloc ked.
 Ensure all appropriate accessories are fitted.
To avoid hazards, the following rules must be observed when operating appliances positioned on a

wheeled supporting structure:

 The parking brakes on the front wheels must always be engag ed when op er ati ng the app lia nces .
 Check that the wheel brakes are on before operation each day.

Live parts

Risk of electric shock from live parts

When the appliance is not connected to an equipotential bonding system, there is a risk of electric
shock from touching live parts.

 Make sure that any work on the electrical system is performed solely by a qualified electrician from

an authorized service company.

 Before preparing the appliance for use, make sure that the appliance, including all metallic acces-

sories, is connected to an equipotential bonding system.

Hot surfaces

Risk of burns from high temperatures inside the cavity and on the inside of the appliance door

 You may get burnt if you touch any of the interior parts of the cooking chamber, the inside of the

appliance door or any parts that were inside the oven during cooking.

 Wear personal protective equipment.

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 51

Hot steam / vapour

Risk of scalding from hot steam and vapour

 When opening the door, always be cautious of escaping hot steam and vapour which can cause

scalding to face, hands, feet and legs.

 When you are cooling the cavity using the ‘cool dow n’ function, step back from the appliance to

avoid the hot steam and vapour escaping through the open door.

Excessive microwave energy

Risk of burns from excessive microwave energy
PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

 Do not attempt to operate this oven with the door open since open-door operation can result in

harmful exposure to microwave energy. It is important not to defeat or tamper with the safety in­terlocks.

 Do not place any object between the oven front face and the appliance door or allow soil or cleaner

residue to accumulate on sealing surfaces.

 Do not operate the oven if it is damaged. It is particularly important that the oven door closes

properly and that there is no damage to the (1) door (bent), (2) hinges, (3) door seals and sealing
surfaces.

 The oven should not be adjusted or repaired by anyone except properly qualified service personnel.

Radio interference

NOTICE

This is a Class A product. In a domestic environment this product may cause radio interference in which
case the user may be required to take adequate measures.

Reduce or eliminate interference to radio, television, or other electrical appliances by doing the fol­lowing:

 Place electrical appliances as far away from the microwave combination oven as possible.
 Use a properly installed antenna on radio, television, etc. to obtain stronger signal reception.

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 52

Permitted

Notice

YES

YES Do not use items with metallic decoration.

YES

Metallic and foil trays

NO

YES Use only plastic containers approved by the
manufacturer.

YES Use only combustibles approved by the man
facturer.

NO

NO No kitchen utensil should be left
while it is cooking in the cavity.

NO

6.2 Procedure for pr eparing the appliance for use

Checks prior to preparing the appliance for use

Before preparing the microwave combination oven for use use the checklists below to make sure that all
important requirements are met. The appliance must not be put into operation until all the specified
requirements are met.

Checklist for moving, setting up and installing the appliance:
 Cardboard packaging and transport securing devices etc. have been removed completely from the

appliance.

 The appliance has no signs of damage.
 The appliance has been set up so that it cannot slide about or tip over; the requirements for the

installation position and the area around the appliance have been met.
 The appliance is installed in accordance with the installation regulations.

Checklist for safety devices and warnings:
 All safety devices are in their designated position, are working correctly and are secured properly in

place.
 All warning signs are in their designated position.

Suitable cooking utensils

Check the manufacturer’s instructions and temperature rating to determine the suitability of individual
containers or utensils using each of the cooking functions. The following chart provides general
guidelines:

Cooking utensils
Heat resistant containers

Toughened glass
Compatible vitreous ceramics
Earthenware (porcelain, crockery, china, etc.)

Any metal or foil containers
Plastic containers
Dual-ovenable plastic containers

Disposables
Combustibles (paper, card, etc.)

Other utensils
Tie tags
Cutlery

Temperature probes

in a foo d product

u-

The easyTouch screen display

The easyTouch
not intended to be an exact representation of those supplied with the appliance.

®

screen display, layout and icons shown herein are for guidance purposes only and are

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 53

Start up

1.

Make all the relevant safety checks and ensure the appliance is
clean and empty.

Then switch the appliance ON.

2.

3.

4.

The easyTouch® screen illuminates with the display briefly
showing the serial number and appliance data.

If required, to keep the data on the screen, lightly tap the screen
once to freeze the display. Tap again to continue.

When the appliance is set up with two or more preheating
temperatures a choice is displayed.

Scroll arrows at the bottom of the screen indicate that there are
more temperature choices not shown on the screen.

If necessary, use the scroll arrows. Then select the temperature
required to start preheating the cavity.

During preheating the display shows the progress as the cavity
heats up to the set temperature.

To stop the cavity heating up touch the red ‘X’ symbol at the
bottom of the screen.

5.

The appliance is ready to use when the 'cookbook' is displayed.

Customer guidance and instruction

Instruct the user regarding all safety-related functions and devices.
Instruct the user in how to operate the appliance.

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 54

Function

'Development Mode' enables multistage cooking profiles to
be developed, then stored under a name and symbol for
reuse.

'Press&Go' allows quick access to
that are already stored.

'Cookbook' contains the cooking profiles stored in the
memory of the appliance. It displays favourites, cooking
profile groups and a complete listing of all cooking profiles
available.

'Cleaning / Temp change' allows the cavity temperature to
be changed and the appliance to be prepared for cleaning
with reminders displayed to assist during the cleaning
process.

'Settings' are used to control the
functions including time and language, loading cooking
profiles and for service and maintenance purpo se s.

6.3 Start page

Appearance

The buttons and what they do

Button Meaning

Development Mode

Press&Go

Cookbook

Cleaning / Temp change

Settings

use the cooking profiles

appliance settings and

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 55

Function

Keyboard
to enter data for pr ograms and may res trict op erato r a ccess
to some functions.

Clear screen

Keyboard
Spacebar

Return

Keyboard scroll

Enter / OK

Previous screen

6.4 The keyboard screen

Appearance

The buttons and their functions

Button Meaning

Keyboard screen

Clear screen
Keyboard

Spacebar
Return

Keyboard scroll
Enter / OK
Previous screen

Character length

screen is used to enter an authorised password

 For names of cooking profiles, names of cooking profile groups and passwords use 1-20 characters in

2 lines max.
 For stage instructions of individual cooking profiles use 1-54 characters in 5 lines max.

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 56

6.5 Using a USB stick

Purpose of the USB cover

The USB cover protects the USB port so that no water vapour can get into the control electronics during
cooking or cleaning.

During cooking and cleaning, there must not be a USB stick inserted and the USB port must be closed
by the cover.

USB programs

IMPORTANT:

Downloading from a USB memory stick will clear all the existing programs in the memory of the appliance.
Check that the key has the correct number/code for the programs you want to load into the memory (1 ‘.cbr’ +
‘autoupd.ate’).

1.

Switch the appliance OFF.
Open the cover to the USB port on the control panel.

2.

Plug in the USB stick.
If the USB stick is too large, use a standard commercial adapter

cable.

6 Preparing the appliance for use

eikon e2s Service and Repair Manual CE 57

4.

3.

Switch the appliance ON.
The files automatically download from the USB memory stick

showing the progress and confirmation screens for the update.
On completion the appliance displays the start up screen.

Then the thermometer symbol is displayed.
Remove the USB memory stick and keep it in a safe place.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 58

7 Cleaning procedures

Purpose of this chapter

This chapter summarizes the cleaning methods, the cleaning chemicals and how to handle them and the
cleaning instructions. It explains the correct procedure to follow when cleaning the microwave combi­nation oven.

Contents

This chapter contains the following topics:

Daily cleaning tasks 59
Cleaning chemicals 59
Items required for cleaning 60
Safe working when cleaning 61
Cleaning procedures 63

Page

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 59

Procedure

Cleaning chemicals

Clean by hand with a soft cloth /
paper towel

Cleaning and protective chemicals
approved by the

Clean by hand with a soft cloth

Common household stainless steel
cleaner or hard surface cleaner





Common household detergent

Use

Cleaning

Protecting the cavity and appliance door

Caring for the external surfaces of the micr
wave combination oven





7.1 Daily cleaning tasks

What must be cleaned?

Cavity

Outside of appliance

Containers, baking sheets, shelf
grills and other accessories used for
cooking

Clean by hand with a soft

non-abrasive sponge

Rinse off after with water

7.2 Cleaning chemicals

Cleaning chemicals

Use solely the cleaning chemicals specified here to clean the microwave combination oven and its
accessories.

Product

Merrychef Cleaner
Merrychef Protector
Common household stainless steel cleaner or

hard surface cleaner
Common household detergent: mild on skin,

alkali-free, pH-neutral and odourless

the cavity and appliance door

o-

Cleaning components and fi t ti ngs ac cor ding to

relevant instructions

Cleaning containers, baking sh eets, s helf gri lls

and other accessories used for cooking

manufacturer

Handling the cleaning chemicals

You must wear personal protective equipment when using certain cleaning chemicals.
Follow the instructions given in the chapter 'Personal protective equipment' on page 38 and the current

safety datasheets pertaining to cleaning and protective chemicals recommended by the manufacturer.
Personnel must be trained regularly by the person responsible for the microwave combination oven.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 60

 Merrychef cleaning chemical

Protective rubber gloves

7.3 Items required for cleaning

Items required for cleaning

 Merrychef protective chemical



 Non-abrasive nylon scrub pad
 Cleaning towel and cloths
 Eye protection
 Heat proof gloves (optional)
 Dust mask (optional)

NOTICE

 Never use sharp implements or harsh abrasives on any part of the appliance.
 Do not use tools.
 Do not use caustic cleaners on any part of the appliance or cavity . It will cause permanent damage to

the catalytic converters.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 61

7.4 Safe working when cleaning

Your safety and the safety of your staff

Before your personnel start working with the microwave combination oven for the first time, familiarize
yourself with the information contained in the chapter 'For your safety' on page 13 and make relevant
safety arrangements.

Instruct your personnel to learn the safe-working rules given in this section before starting work, and to
follow them strictly.

Instruct your personnel to familiarize themselves with the hazard warnings listed in this section and in
further instructions below, and instil in them the importance of taking the specified precautions.

Personal protective equipment for your personnel

Instruct your personnel to wear the correct personal protective equipment specified in the section
'Personal protective equipment' on page 38 of the 'For your safety' on page 13 chapter for the relevant
tasks.

Rules for moving and setting up the wheeled tr olley safely

T o avoid hazards, the following rules must be observed when moving the wheeled trolley that carries the
appliances (optional accessory):
 Watch out for all connecting cables when moving appliances. Never wheel over the connecting

cables. Never stretch let alone pull off the connecting cables.
 The appliances must be disconnected from the electrical supply before moving the stacking kit

(optional accessory).

 The appliances must be left to cool down on the trolley before being moved.
 There must not be any food left in the appliances.
 The appliance door must be closed.
 Protective clothing must be worn if the appliance is mounted on a trolley.
 It is important to ensure that the unit is level once is back in place.
 Once the unit is back in place, the parking brakes must be engaged again.
 Whatever the position, care must be taken to ensure that the trolley carrying the appliance does not

tip over.

Spraying down the appliance with water

Risk of electric shock from live parts

Water on the exterior of the appliance can cause a short-circuit, which may result in electric shock on
touching the appliance.

 Do not spray the interior and exterior of the appliance with water.
 Always keep the USB cover closed during cleaning.

Hot surfaces

Risk of burns from high temperatures on interior parts of the appliance

You may get burnt if you touch any of the interior parts of the cavity, the inside of the appliance door or
any parts that are or were inside the oven during cooking.

 Before starting cleaning tasks, wait until the cavity has cooled to below 50°C / 122°F or use the

Cool Down function to cool the cavity.

 Wear personal protective equipment.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 62

Spraying water into a hot cavity

Risk of scalding from hot steam

If water is sprayed into the hot cavity, steam will be produced that may scald.

 Before starting cleaning tasks, wait until the cavity has cooled to below 50°C / 122°F or use the

'Cool Down' function to cool the cavity.

Contact with cleaning chemicals

Risk of irritation to skin, eyes and respiratory system.

Direct contact with the cleaning or protective chemicals will irritate the skin, eyes and respiratory
system.

 Do not inhale the vapours or spray mist from the cleaning and protective chemicals.
 Do not let the cleaning or protective chemicals come into contact with skin, eyes or mucous mem-

branes.

 Do not spray cleaning or protective chemicals into a cavity.
 Wear personal protective equipment.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 63

7.5 Cleaning procedures

Cleaning the microwave combination oven

This section explains how to clean your microwave combination oven.

Contents

This section contains the following topics:

Cool down procedure before cleaning 64
Cleaning instructions 66

Page

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 64

7.5.1 Cool down procedure befor e clea ning

For your safety when cleaning

Before starting cleaning work, it is essential that you familiarize yourself with the rules and hazard
warnings specified in 'Safe working when cleaning' o n page 61, and follow the instructions given there.

Purpose

With the optional 'cool down' function you can cool down the cavity quickly for cleaning your microwave
combination oven sooner.

Cooling down the cavity

1.

In 'Full Serve mode', select the 'cleaning' symbol from the main
menu.

2.

In 'Full' or 'Quick Serve mode', select the 'blue thermometer'
symbol to disable heating and to start the cooling cycle.

A prompt appears.

OR

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 65

3.

Taking all necessary precautions place a suitable tray of ice
cubes into the hot cavity. This speeds up the cooling process.

Press the green tick to continue.

4.

5.

The cooling progress is displayed and takes approximately 20
minutes.

To reduce the cool down time to about 20 minutes leave the
appliance door open slightly during the cooling process.

Once the cooling process is complete, carefully remove the cool
down pan from the cavity wearing protective gloves.

6.

The oven is now ready for cleaning.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 66

3.

7.5.2 Cleaning instructions

For your safety when cleaning

Before starting cleaning work, it is essential that you familiarize yourself with the rules and hazard
warnings specified in 'Safe working when cleaning' on page 61, and follow the instructions given there.

Requirements for cleaning the appliance

 The appliance is cool.
 No food has been left in the cavity.
 All containers, baking sheets, shelf grills and any other accessories have been removed from the

cavity.

Cleaning the oven and oven parts

1.

Open the appliance door and remove the cook plate / wire rack
and any other cooking vessels from the cavity.

CAUTION: Wear protective gl ass es and protective rubber gloves
during the cleaning procedure.

2.

4.

Wash all removed oven parts in warm soapy water.
Wash off using a clean cloth and plenty of clean, warm water.
Dry all components using a fresh, clean cloth.

Remove any spillages with suitable cloth or paper towel.
Use a dry clean brush to rem ov e any food part icles f rom bet w een

the cavity floor and the inside of the front door.

Carefully spray cleaning chemical approved by Merrychef onto a
sponge.

Clean all surfaces of the cavity except the door seal.

NOTICE: Do not spray directly into the cavity.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 67

5.

For difficult area s, leave to soa k for 10 minute s with the applia nce
door open.

Use a non-abrasive nylon scr u b pad/ spo nge to clean all surfaces
of the cavity including the roof and the inside surface of the
appliance door.

NOTICE: Do not scrub the door seal or use metallic scourers.

6.

7.

8.

Wash off all surface s usi ng a wet clean cloth.
Dry using a fresh, clean cloth or paper towel.

Replace the cleaned cook plate / wire rack.
Double-check that all components are dry before re-fitting them.

Close the appliance door.

9.

10.

Wipe the outside of the appliance with a damp cloth.

NOTE: Do not use the applian ce withou t a clean air fi lter in pl ace.
Press the green tick to continue.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 68

1.

3.

Applying the protective chemical, cleaning the air filter

After completing the cleaning procedures press the green tick to
confirm that the cavity has been cleaned.

Y ou can the n apply a pr otectiv e chemical to m ake cleani ng easier
the next day (optional).

2.

Spray protective chemical approved by Merrychef onto a clean
sponge.

NOTICE: Only apply the prote ctive c hemical to a cl ean appli ance.

Spread the protective che mical ligh tly onto all int ernal sur face s of
the appliance avoiding the door seal.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 69

4.

Replace all mobile p arts into th e cavity t hat had be en remove d for
cleaning.

5.

6.

Close the appliance door.

Press the green tick to confirm application of the protective
chemical.

A prompt appears asking to clean the air filter.

7.

Tilt the faceplate below the appliance door downwards.

7 Cleaning procedures

eikon e2s Service and Repair Manual CE 70

8.

Remove the air filter.

9.

10.

11.

12.

13.

14.

Clean the air filter with a damp cloth.
Replace the air filter and tilt the faceplate in its original position.
Clean the oven exterior with a damp cloth.
Press the green tick to confirm cleaning of the air filter.

The oven switches off.

Switch ON the appliance.
If the air filter has not been replaced the screen will display a

warning. Replace the air filter and then press the green tick to
continue.

Preheat the cavity.
Once reaching the pre set operating temperature it will take about

30 minutes to cure the protective chemical.
The protective chemical turns light brown when cured.

8 Technical data

eikon e2s Service and Repair Manual CE 71

8 Technical data

Purpose of this chapter

This chapter contains the technical data for your microwave combination oven.

Contents

This chapter contains the following topics:

Technical data 72
Dimensional drawings 74

Page

8 Technical data

eikon e2s Service and Repair Manual CE 72

[in] 21.1

535

[in] 14.0

356

[in] 33.5

850

[in] 24.4

620

[in] 25.4

644

[in] 35.3

895

[in] 25.0

636

[lbs] 155

70.4

[lbs] 134

61.0

[lbs] 135

61.1

[lbs] 114

51.7

[in] 0

0

[in] 2

50

1N~ 220
50Hz

2N~
50Hz

1N~ 220V 60Hz

2~ 200V 50/60Hz
L + N + E

L1 + L2 + N + E

L + N + E

2P + GND

Single Phase

Twin Phase

Single Phase

Two Pole

[W] 6000

2500 + 3300

6000

6000

[A] 32 16 / 32

32 32

[W] 2200

2200

2200

2000

[W] 2000

2000

2000

2000
[W] 2200 + 2000

2200 + 2000

2200 + 2000

2000 + 2000

8.1 Technical data

Dimensions and weights

Width
Including packaging
Appliance without packaging
Height
Including packaging
Appliance ("Classic" exterior) without packaging
Appliance ("Trend" exterior) without packaging
Depth
Including packaging
Appliance without packag ing, door closed
Weight
High Power version, including packaging
High Power version, excluding packaging
Standard Power version, including packaging
Standard Power version, ex clu ding packag ing
Safety clearances
Rear / right / left
Top (for ventilation)

[mm]
[mm]

[mm]
[mm]
[mm]

[mm]
[mm]

[kg]
[kg]
[kg]
[kg]

[mm]
[mm]

Electrical connected load ratings – High Power version

Electrical supply

Connections used
Arrangement
Rated power consumption
Rated current per phase
Power output
Rated power output

convected heat
Rated power output

microwave (IEC 705)
100%

Rated power output
combination mode

-230V

380-400V

8 Technical data

eikon e2s Service and Repair Manual CE 73

1N~ 220
50Hz

1N~ 220V 60Hz
L + N + E

L + N + E

Single Phase

Single Phase

[W] 2990

2860
[A] 13

13

[W] 2200

2200

[W] 1000

1000

[W] 900 + 1000

900 + 1000

IPX0

max. 70 [dBA]

CE, CB (IEC)

UL

Electrical connected load ratings – Standard Power version

Electrical supply

Connections used
Arrangement
Rated power

consumption
Rated current per phase
Power output
Rated power output

convected heat
Rated power output

microwave (IEC 705)
100%

Rated power output
combination mode
(convected heat +
microwave)

-230V

L + N + E

Single Phase

3680

16

2200

1000

1300 + 1000

1N~ 220-230V
50Hz

Regulatory standards compliance

Degree of protection
Noise emission
Approval marks
Tested safety
Hygiene

-EPH (NSF/ANSI 4)

8 Technical data

eikon e2s Service and Repair Manual CE 74

Cavity dimensions (door closed)

View from the right hand side (door open)

8.2 Dimensional drawings

e2s

Front view (door closed)

View from the top (door closed)

9 Diagnostics

eikon e2s Service and Repair Manual CE 75

9 Diagnostics

Purpose of this chapter

This chapter contains information on checking various functions of your microwave combination.

Contents

This chapter contains the following topics:

Checking the condition of your appliance 76
Errors and diagnostics 80
Fault finding 87

Page

9 Diagnostics

eikon e2s Service and Repair Manual CE 76

2.

Check the display for error m essages. If an err or is shown, re fer to the “ Diagnosti cs” secti on of thi s

3.

9.1 Checking the condition of your appliance

Servicing procedure: overview

1.

Disconnect/isolate the appliance from the power supply.
Check the appliance is correctly installed as described in the “Installation” section of this manual.

3.

Visually check the cleanline ss/ cond itio n of the pow er supply/cable/gland, casing, cavity and door
of the appliance for signs of wear, damage, distortion etc. If required, refer to the “Replacing
components" section of this manual.

4.

Complete an "Earth/Insulation test" (see “Tests" section of this manual) on the appliance befor e
switching on.

5.

manual.

6.

If a firmware update is required, follow the instructions under “Firmware Updates” before contin­uing with the service procedure.

Enter Service Mode

1.

On start up, tap the top right of the splash screen to bypass
preheat of the cavity.

2.

Enter the authorised user password, for example, "MANAGER"
on the keypad.

Select OK to display the ‘Settings’ men u.

Select the spanner symbol.

9 Diagnostics

eikon e2s Service and Repair Manual CE 77

4.

Touchscreen calibration

1.

Enter the service password, for example, "SERVICE" on the
keypad.

Select OK to display the Error Log, service information and test
options.

Apply continuous light pressure to the screen while switching the
appliance on.

Continue to hold until the progress bar has completed .

2.

3.

Using a non-abrasive pointer, such as a ball point pen, accur ately
press the centre of each crosshair displayed on the screen.

If the crosshair turns red you missed the centre of the crosshair.
Repeat the procedure.

9 Diagnostics

eikon e2s Service and Repair Manual CE 78

4.

If the crosshairs turn green three times consecutively the cali­bration process is completed succes sful ly.

5.

Functions of the Service Mode

1.

2.

Once calibrated the screen will display information about the
appliance.

Check the "Error Log" for details of any logged appliance errors.

Check the "Oven Counters" to find t he u sa ge of co mp onen ts and
the controls area temperature wit hin the cabinet .

3.

Check the operational perform ance of the main compo nent s
using "Visual View".

9 Diagnostics

eikon e2s Service and Repair Manual CE 79

4.

Perform the tests of your microwave combination oven as de­scribed.

See “Tests” section of this manual.
If required refer to the “Replacing components” section for any

repairs needed before continuing with the tests.

5.

Follow the procedures under “Commiss ion ing the app liance”
before commissioning your appliance for use.

9 Diagnostics

eikon e2s Service and Repair Manual CE 80

2.

9.2 Errors and diagnostic s

Error messages

1.

A description of the type of error is shown.
Check for a number following ‘ERROR:’ and refer to the error

codes (“Fault Finding” section of this manual) for more details.
The serial number of t he ov en, mod el, UI (QT S) v ersion and SRB

version information are also displayed below.

Copying error messages

1.

Clear the error message by power cycling the mains power
supply to the oven (not the oven ON/OFF switch).

Enter settings menu and select the USB symbol.
The USB screen appears.

9 Diagnostics

eikon e2s Service and Repair Manual CE 81

2.

Open the cover of the U SB port and insert the U SB m emo ry s tic k
into the slot.

NOTE:
The USB memory stick may take several seconds to load before

the screen will respond.

3.

4.

Select ‘Upload Files’ on the USB screen.

Select ‘Error Log’ on the following screen.

9 Diagnostics

eikon e2s Service and Repair Manual CE 82

7.

5.

Select the green tick to copy the error log to the USB memory
stick.
The upload progress is shown followed by the upload status.

6.

Error Log

1.

2.

Select backspace 3 times to return to the main menu.

Remove the USB memory stick.

Enter Service Mode and select ‘Error Log’ to display a listing of
oven component errors.

Scroll down the list (if necessary) and select an error from the list
to display individual records.

3.

4.

Error details include: component description, error caused, date
and time of the error with details of failure and range.

Select backspace to return to the list, again to return to the
Service Menu.

9 Diagnostics

eikon e2s Service and Repair Manual CE 83

1.

Cooking Profile counter

2.

Select ‘Oven Counters’ to displ ay the ove n compone nt usage and
ambient controls area temperature.

Details include the number of screen touches, filter cycles, door
cycles, total oven power, magnetron and heater element po wer
on time and the ambient contr ols area tem perature i n the cabinet.

3.

Visual View

1.

2.

Select backspace to return to the Service Menu.

Select 'Visual View' to check the main components of the appli­ance.

Select a component symbol to switch on (red).
Select again to increase the level or turn off (green).

9 Diagnostics

eikon e2s Service and Repair Manual CE 84

3.

4.

Remove the air filter at the front of the oven.
The colour of the air filter symbol on the display should change

from green to red indicating that the magnetic reed switch circuit
for the air filter is operating correctly.

Replace the air filter and t he c olour sh ould ch ange ba ck to gr een.

Open the oven door.
Check the colour of the door symbol changes from green to red

on the display to check the door microswitch / interlock circuit is
operating.

Place door spacers onto the oven door (refer to "Adjusting the
door microswitches / interlocks" in the “Replacing components”
section for details), close the door and check the colour of the
door symbol on the display.

Green colour indicates that the door interlock adjustment is ok.
Red colour indicates that t he door int erlock adj ustment pro cedure

must be completed.

5.

Select the cooling fan and check if it is operating correctly.
When increasing the fan power from L (low) to H (high) the fan

noise should become louder.

9 Diagnostics

eikon e2s Service and Repair Manual CE 85

6.

7.

Place a microwave safe container of water into the cavity, and
close the oven door.

Select a magnetron to test the current draw at maximum output,
this will time-out after 30 seconds.

Dual magnetron model (2000W e2s variant):
Test the magnetrons individually and together.
Using heat proof gloves, r emove the container and c lose the ov en

door.
Individual magnetron test:
If there is a magnetron error present, then first reset the error.
If during the magnetro n test th e current is between 1. 1 - 2.2 A and

the error re-occurs after 8 seconds then the failure can be found
in the 230V circuit .

Refer to the schematics to find the fault for repair (fuses, SRB,
door switches, connections, power supply).

If during the magnetron test 0 A and the error reoccurs after 8
seconds then the failure can be found in the high voltage circuit.

Replace high voltage components (diode/rectifier, capacitor or
magnetron) to find out the failing component. Never measure in
the high voltage circuit. See "Replacing components" section of
this manual.

Select the convection fan and check if it is operating correctly.
When increasing the fan power gradually to 100% the fan noise

should become louder.

8.

Select the heater, it increases t o maximum temperature and then
cycles (the convection fan is ON by default).

Check the cavity temp eratur e and h eater eleme nt curren t dra w at
maximum are correct. The current sho uld be between 7 A an d 9 A
depending on domestic mains voltage.

9 Diagnostics

eikon e2s Service and Repair Manual CE 86

9.

Select one and then the second magnetron (2000W e2s variant
only) and check if they are operating correctly.

9 Diagnostics

eikon e2s Service and Repair Manual CE 87

The oven has 2 main p arts b eing the QT S assemb ly (Key boa rd, S creen , Logi c) and

4.

9.3 Fault finding

Hardware control components

Operations communication:

1.

the SRB (Smart Relay Board to switch and monitor the required operation).

2.

The QTS is the master of the oven and instructs the SRB what to do, in turn t he SRB
communicates information on the operation back to the QTS.

3.

The QTS and SRB have their own Personality Module (PM) fitted with the respec­tive software to be able to communicate and work with each other.

The power provision to the QTS and the communication between QTS and SRB is
enabled via ONE cable with RJ45 connectors fitted.

Start up sequence
With the oven switch in the OFF position and the mains power ON, the QTS & SRB boards boot up.
When the oven switch is turned ON the splash screen briefly displays oven information and the cabinet

cooling fan is activated.
After completing a successful logic test, the safety relay is energised and the oven preheats or displays

a preheat temperature choice. Once preheated the oven displays the main menu if in "Full Service
Mode" or a recipe selection if in "Quick Service Mode".

Shutting down sequence
When oven switch is turned OFF the screen displays ‘Shutting Down’ and the cooling fan operates until

the cabinet temperature has been sufficiently reduced (cavity temperature of 50°C / 122°F).
The safety relay is de-energised and the QTS & SRB boards remain active.

Exchanging data via USB interface

Procedures of exchanging data by using the USB memory stick:

 Menu loading from the USB memory stick to the appliance (recipes / download)
 Software loading from the USB memory stick to the appliance (firmware / download)
 Error log saving from the appliance to the USB memory stick (upload)
 Menu copying from the appliance to the USB memory stick (upload)
 Recipe counter copying from the appliance to the USB memory stick (upload)

9 Diagnostics

eikon e2s Service and Repair Manual CE 88

Error

Error

Description

Trigger

Possible Causes

System

E 101

Magnetron

Detects a magne-

The current

Failure of com-

Display error

E 102

Heater

Detects a heating

The current

If some current

Display error

E 103

Ambient

Detects if the

The ambient

Cooling fan failed.

Display error

E 104

Magnetron /

Detects if the

Cavity and mag-

Cooling fan failed.

Display error
E 105

Supply

Detects if the

The power supply

Incorrect mains

Display error

E 106

Cavity

Detects if the

The setpoint of the

Cavity fire.

Display error

E 107

Communica

No communica-

Loss of commu-

SRB / QTS con-

Display error

Error Code List

Code

Condition

failed to
energise

incorrect
current

overheat
>70°C

cavity
overheat

tron is not working
correctly

element is not
working correctly

controls area is
operating above
temperature

cavity and mag­netrons are above
temperature

measured by the
current sensing
transformer was
outside of toler­ance.

measured by the
sensing trans­former on the SRB
was <1A when
heating cycled on
or >1A when
heating cycled off.

temperature
measured on the
QTS and SRB
was >70°C

netron overheat
thermostats

ponent/s in the
microwave circuit

>1A, one or more
heater elements
could have failed.

If current meas­ured <1A possible
wiring fault stop­ping power
reaching element.

Cooling fan wired
incorrectly. Inlet
air too hot.
Blocked inlet filter.

E103 / E106 not
triggering. Failed
SRB. Magnetron
failure. Wiring /
connection fault.
Blocked inlet filter.

Response

message until
system is power
cycled.

message until
system is power
cycled.

message until
ambient controls
area temperature
is below 60°C.

message until
service call and
the magnetron
cools down or the
cavity stat is reset.

frequency
high / low

power supply
frequency is
outside specifica­tion

reaches
25°C above
setpoint

cavity temperature
has risen above

imits
once it has
been con­trolling at
setpoint

tion error

tion can be made

between the QTS

and SRB

to the oven fre­quency sensor on
the SRB
measures too high
/ low

appliance was
exceeded

nication between
the SRB and QTS

voltage.
Poor internal /

external wiring
connections.

Faulty SRB.

Failed convection
fan.

No impeller or
loose impeller on
convection fan.

nection cable
unplugged or
damaged.

Faulty

QTS or SRB.

message until
system power
cycled.

message until
system is power
cycled.

message until
system is power
cycled.

9 Diagnostics

eikon e2s Service and Repair Manual CE 89

E 108

QTS PM

Wrong PM found /

The QTS or SRB

The PM has been

Display error

E 109

SRB PM

E 110

SRB

SRB firmware

The QTS has

Firmware update

Display error

E 111

Cavity

Cavity sensor

The controller is

The thermocouple

Display error

E 112

SRB sensor

SRB ambient

Shorted SRB

Shorted Ambient

Display error

E 113

Magnetron

Magnetron oper-

Magnetron current

Triac, Diode or

Display error

E 116

Heater off

No heater current

Cavity does not

Oven heater

Display error

E 117

Magnetron

Magnetron over-

Magnetron stat is

Blocked air filters /

Display error
n/a

Oven door

Oven door open.

Break in switched

Door left open.

Display warning
n/a

Air filter

Air filter not fitted.

Filter not fitted.

Failed reed

Display error

error

error

version
conflict

sensor error

fail

no PM found

version incom-

patible with QTS

version

broken /

unplugged

temperature

sensor failure

either has an
incorrect PM
(Personality Mod­ule) fitted or no
PM is fitted

found that the
firmware running
the SRB is not
supported.

reading an open
circuit across the
thermocouple
input

temperature
sensor

changed and is
incorrect. The PM
has been re­moved.

has been carried
out to the QTS
and the SRB has
not been updated
to match.

is not connected.
The thermocouple
is broken open
circuit.
SRB.

temp sensor on
the SRB

Failed

message until
system is power
cycled.

message until
system is power
cycled.

message until
system is power
cycled.

message until
service call and
the magnetron
cools down or the
cavity stat

fail on
without
request

on request

overheat
thermostat

open longer
than 1 min.

ates without being

requested to do

so.

detected when

requested

heat thermostat

has been trig-

gered as a result

of excessive

temperature

Oven inoperable.

sensed at >1 Amp

reach 100°C in 30
minutes

open circuit when
running micro­wave

feed on SRB

relay short cir­cuited on SRB

element failure

high environmen­tal temperatures /
Positioning next to
heat sources or
failed magnetron

Failed door
switch/s or SRB.
Faulty wiring or
connection.

message until
service call and
the magnetron
cools down or the
cavity stat is reset.

message until
service call and
the magnetron
cools down or the
cavity thermostat
is reset.

message until
service call and
the magnetron
cools down or the
cavity thermostat
is reset.

message until
door is closed.

removed

Oven inoperable.

switch/s or SRB.
Faulty wiring or
connection.

message until
filter replaced.

9 Diagnostics

eikon e2s Service and Repair Manual CE 90

n/a

Screen

Touch screen

Continual pres-

Damaged touch

Display error

frozen

inoperable

sure of the touch
screen

screen / touch
screen depress for
more than 15
seconds.

message until
touch screen
press released

Error code for recommission test messages

89 Cooling test fail
90 Convection test fail
92 Heater test fail
93 Magnetron test fail
94 Air filter in test fail
95 Air filter out test fail
96 Door closed test fail
97 Door open test fail
98 Incomplete cleaning

Normal error messages

86 On/Off switch operated
99 Air filter override accepted by the customer
100 Main power On, oven connected to the supply door open (for more than 1 minute)
If ‘Door Open’ message is shown while the door is closed, check the Magnetron 230V circuit power

supply.

Error messages (the oven stops operating)

88 Supply voltage error (+/- 10% of rated voltage)
101 Magnetron failed on request
102 Heater ON without request
103 Ambient overheat
104 Magnetron/cavity overheat trip, when oven in idle mode (also see E117)
105 Supply frequency error (+/- 2Hz)
106 Cavity reaches 75°C above set point or 25°C at 275°C
107 Communication error QTS-SRB
108 QTS Personality Module error
109 SRB Personality Module error
110 Incompatible SRB version
111 Cavity sensor failed
112 SRB board sensor failed
113 Magnetron on without request
114 Free – currently not used
115 Convection fan feedback (motor speed controller cable disconnected)
116 Heater OFF on request
117 Magnetron/cavity trip during cook operation cycle (OH-12V gone for > 1sec)
If this OH trip happens in idle mode you get E104.

To reset the error, disconnect the oven from the power supply and re-connect.

10 Tests

eikon e2s Service and Repair Manual CE 91

10 Tests

Purpose of this chapter

This chapter contains information on testing single components of your microwave combination oven.

Contents

This chapter contains the following topics:

Safe working when testing com ponents 92
Requirements 94
Testing selected components (casing mounted) 94
High voltage components (casing removed) 103
Mains voltage components (casing removed) 106

Page

10 Tests

eikon e2s Service and Repair Manual CE 92

10.1 Safe working when testing components

For your safety when testing oven components

Before starting oven tests, it is essential that you familiarize yourself with the rules and hazard warnings
specified and follow the instructions given there.

Eligibility of personnel for testing oven components

Only qualified personnel from an authorized service company are permitted to test components of the
microwave combination oven.

Electrically live components

Risk of electric shock from live parts

When the appliance is not connected to an equipotential bonding system, there is a risk of electric
shock from touching live parts.

 Make sure that any work on the electrical system is performed solely by a qualified electrician from

an authorized service company.

 Make sure that the electrical connections are intact and connected securely before putting the

appliance into use.

 Before preparing the appliance for use, make sure that the appliance, including all metallic acces-

sories, is connected to an equipotential bonding system.

Moving heavy loads

Risk of injury from lifting incorrectly

When lifting the appliance, the weight of the appliance may lead to injuries, especially in the area of the
torso.

 Use a forklift truck or pallet truck to place the appliance in the installation position or to move it to a

new position.

 When shifting the appliance into the correct position, use enough people for the weight of the

appliance when lifting it (value depe nding on age and gender). Observe the local occupational
safety regulations.

 Wear personal protective equipment.

Sharp-edged sheet-m etal parts

Risk of cuts from sharp-edged sheet-metal parts

Working with or behind sharp-edged sheet-metal parts may result in cuts to hands.

 Exercise caution.
 Wear personal protective equipment.

10 Tests

eikon e2s Service and Repair Manual CE 93

Hot surfaces

Risk of burns from high temperatures inside the cavity and on the inside of the appliance door

 You may get burnt if you touch any of the interior parts of the cooking chamber, the inside of the

appliance door or any parts that were inside the oven during cooking.

 Before starting servicing and repair work, wait until the cooking chamber has cooled to below 50°C /

122°F or use the ‘Cool-Down' function to cool the cooking chamber.

 Wear personal protective equipment.

Live components

Risk of electric shock from live parts
When the covers of the microwave combination oven are removed, there is a risk of electric shock from

touching live parts.

 Make sure that any work on the electrical system is performed solely by a qualified electrician from

an authorized customer service office.

 Before removing the covers:



Switch the appliance off and disconnect the plug from the wall socket.



Turn off the isolator switch to disconnect fixed wired appliances and lock-off.



Take protective measures at every power switch to ensure that the power cannot be switched on
again.



Always discharge the high voltage capacitors before working on the appliance using a suitably
insulated 10MΩ resistor.



Make sure that the appliance is de-energized.

 Make sure that the electrical connections are intact and connected securely before you reconnect

the appliance to the power supply.

 Before putting the appliance back into operation, make sure that the appliance, including all metallic

accessories, is connected t o an equipot en tia l bondin g system.

Microwave emissions

Risk of burns from microwave emissions

 Do not become exposed to emissions from the microwave generator or parts conducting microwave

energy.

 Never operate an appliance that has failed the "Microwave Leakage test".

Fire / smoke in the appliance

Risk of fire and/or smoke

Flames and/or smoke may come out of the oven when switching it on after service/repair. This can be
caused by a defective electrical component or electrical connections (wiring) that have been refitted
incorrectly.

 Switch off the oven.
 Disconnect/isolate the oven from the electrical supply.
 Keep the oven door closed to stifle any flames.

10 Tests

eikon e2s Service and Repair Manual CE 94

Model

Model maximum limit applied with radio
eikon e2s

10 mA

10.2 Requirements

Equipment required for testing the appliance

 Portable Appliance T ester (P .A.T.)
 Digital Multi-Meter (D.M.M.)
 Megger / similar 500 V d. c. resistance meter
 Microwave detection / leakage meter
 Temperature reader
 Continuity meter
 Door Spacer Kit
 Microwave safe 600 ml glass beaker
 Microwave safe 2 litre container

10.3 Tes t ing selected components (ca sing mounted)

Technical Advisory Notice: PAT testing of Merrychef ovens

While testing with a Portable Appliance Tester (PAT) is not an automatic requirement for the Merrychef
Commercial Combination Microwave oven models, the following notice is to advise on this testing in
addition to the following instructions as deemed necessary.

If the customer requires PA T testing of our equipment we suggest this is limited to a) earth continuity and
b) insulation resistance (measured at ~ 500 V DC). All Merrychef Commercial Combination Microwave
Ovens are classified as CLASS 1 for the purpose of testing.

Should it still be deemed necessary by the customer to perform an Earth Leakage test, the following
advice should be adhered to. Note that not all PATs are capable of just measuring the leakage or allow
you to set a pass limit and therefore may not be appropriate for this test.

HIGH LEAKAGE CURRENT
Merrychef appliances are fitted with radio interference filters and inverter circuits which cause an

increase in leakage current. The PAT may indicate an erroneous fail condition depending on its internal
"pass"/"fail" settings. Please refer to the revised limits which apply to the specific Merrychef oven model.

interference filter fitted

Never touch the component under test while tests are being carried through.

 Call a trained authorized service agent if the oven under test still fails in order to check all earth

connections and disconnect the radio interference filters before repeating the test if required.

10 Tests

eikon e2s Service and Repair Manual CE 95

Place the Portable Appliance Tester in an open area, su ch a s the

If a FAIL is indicated (i.e. unit exceeds maximum limit), remove

2.

Earth/Insulation Test

Check that the following requirements have been met:
 The appliance has been disconnected from the power supply and protective measures have been

taken to ensure the power cannot be switched on again.

1.

2.

3.

Connect the mains lead from the appliance to a Portable Appli­ance Tester.

Connect the earth from the Portable Appliance Tester to the
appliance.

floor, away from any persons.
Perform a Class 1 test in accordance with tester instructions.

 A PASS indicates the oven earthing circuit is functioning cor-

rectly.



the casing of the appliance and check ALL earth connections.
Then repeat the Class 1 test.

WARNING:
Never operate an appliance th at has fa ile d this test as it could be

potentially dangerous.

Service Mode: Tests Menu

1.

Enter Service Mode.
For details see "Checking the condition of your appliance".

Select the down arrow to display the individual tests for the
appliance to perform.

10 Tests

eikon e2s Service and Repair Manual CE 96

Microwave Power Test: Meas uri ng the microwave power output of the magnetron(s)

Check that the following requirements have been met:
 The appliance is cool.

NOTE:
The power output is established under IEC 705 standard method which is only workable in laboratory

controlled conditions. The power output is also affected by line voltage under load, so this test is an
approximation only.

1.

2.

Enter Service Mode.
For details see "Checking the condition of your appliance".

Select 'Visual V iew' to check the cavity tem perat ur e rea ding is as
close to 0°C as possible.

3.

4.

5.

6.

Fill a microwave safe container (glass or plastic) with one litre
(1.78 pints) of tap water at 20°C (68°F).

Measure and record the w ater temp erature in t he con tainer u sing
a thermometer capable of reading ±0.1 degree increments.

Place the container centrally into the cavity.
Select ‘Microwave Power Test’ from the Service Mode tests

(microwave power 100% for 63 seconds, fan minimum).

10 Tests

eikon e2s Service and Repair Manual CE 97

7.

8.

When the countdown has finis hed, remove t he container fro m the
cavity.

Immediately stir with a plastic implement and measure the water
temperature.

Calculate the temperature rise of the water (end temperature
minus the start temperature).

The temperature rise should be 14.3°C (25.7°F) ±10% for the
1000W (1 magnetron) variant.

The temperature rise should be 28.5°C (51.4°F) ±10% for the
2000W (2 magnetrons) variant.

If the temperature rise is outside these limits check the micro­wave circuit and components.

Replace the magnetron and/or high volta ge diod e bo ard / r ect ifier
if required.

Microwave Leakage test

Follow these instructions when measuring:
 Make sure that the survey meter you are using has been calibrated and is suitable for measuring

frequencies of 2,450 MHz.

 Do not exceed meter full scale deflection. The leakage meter should initially be set to the highest

scale, then adjusted down as necessary to ensure that low readings are measured on the most
sensitive range.

 To prevent false readings, hold the probe on the grip provided and move at 2.5 cm/second.
 Always hold the probe at right angles to the oven and point of measurement, ensuring the probe is

reading 50 mm from the test area.

 The leakage should not exceed 5 mW/cm².

10 Tests

eikon e2s Service and Repair Manual CE 98

1.

2.

3.

Add 275 ml of cold water into a 600 ml m icrow av e safe contai ner.
Place the 600 ml container in the centre of the cavity and close

the door.
Enter Service M ode on the screen and select ‘Microw ave leakag e

test’ from the appliance tes ts.

4.

5.

Set the leakage meter to the appropriate scale/r ang e.
Move the survey meter probe across all casew ork joins and vent

areas including those marked in yellow, shown opposite.

10 Tests

eikon e2s Service and Repair Manual CE 99

6.

7.

8.

9.

When the magnetron circuit stops after 30 second s, chan ge t he
water and re-select the test to continue.

Select the red ‘X’ on the display to stop the test at any time.
Readings must be below 5 mW/cm².

CAUTION:
If a level greater than 5 mW/cm² is observed, report this to the

Merrychef Service Department immediately. Don't use the
appliance hereafter.

Note any leakage that is observed in terms of the level and
position on the appliance. Keep this information with the service
documentation.