Welbilt MERRYCHEF eikon e2s Operating instructions

eikon e2s
Service & Repair manual
Part number:
32Z3923
Read instructions before use
®
Microwave combination oven
Date: Feb 2021/v1
Models: 50Hz & 60Hz
Language: English

Merrychef eikon®e2s service and repair manual
2
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
1 General information
Back to contents >
Section no.
Page no.
1
General information
4
1.1
Declaration of conformity
4
1.2
Environmental protection
4
1.3
Important information
4
1.4
Identifying your microwave combination oven
5
1.5
About this service and repair manual
6
2
For your safety
7
2.1
Basic safety code
7
2.2
Requirements to be met by personnel and working positions
8
2.3
Personal protective equipment
8
2.4
Intended use of the microwave combination oven
10
2.5
Warning signs on the microwave combination oven
11
2.6
Safety devices
12
2.7
Summary of hazards
13
2.8
Hazards and safety precautions when setting up the
appliance, during installation, preparing the appliance for use
and cleaning
13
2.9
Safe working when working on the appliance
14
2.10
Hazards and safety precautions during servicing and repair
14
2.11
Hazards and safety precautions when taking the appliance
out of service
17
2.12
Safe working during electrical installation
18
2.13
Electrical installation requirements
19
2.14
Safe working when testing components
21
2.15
Process for discharging the capacitors
23
2.16
Safe working when replacing appliance parts
24
3
Technical data
26
3.1
Technical data charts
26
3.2
Dimensional drawings
32
4
Accessing the easyTouch®screen
33
4.1
Main menu screen
33
4.2
The keyboard screen
34
4.3
Cleaning procedures
35
4.4
Using a USB stick
36
4.5
Firmware updates
37
5
Service information
42
5.1
Service procedure
42
5.2
Errors and diagnostics
45
5.3
Fault finding
48
5.4
Safe working when testing components
55
5.5
Requirements
55
5.6
Testing selected components (casing mounted)
55
5.7
Recommissioning test
60
5.8
High voltage components (casing removed)
61
5.9
5.10
Mains voltage components (casing removed)
Optional components (casing removed)
64
66
6
Replacing components
67
6.1
Safe working when replacing appliance parts
67
6.2
Overview
67

Merrychef eikon®e2s service and repair manual
3
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
1 General information
Back to contents >
6.3
Removing / fitting the casing
70
6.4
Removing / fitting the door assembly
71
6.5
Replacing the door gasket
73
6.6
Replacing a magnetron
74
6.7
Replacing the cooling fan
76
6.8
Replacing the QTS (Quick Touch Screen) assembly
77
6.9
Replacing the SRB (Smart Relay Board)
78
6.10
PM (Personality Module) replacement
79
6.11
Replacing the touchscreen control D and overlay
80
6.12
Adjusting the door microswitches/interlocks
81
6.13
Replacing the stirrer motor and stirrer assembly
83
6.14
Replacing the convection fan motor
85
6.15
Replacing a transformer (high voltage)
86
6.16
Removing the convection fan motor speed controller
87
6.17
Replacing the heating element
88
6.18
Overview – further components
89
6.19
Technical data summary sheet
94
7
Circuit boards and diagrams
96
7.1
SRB / QTS circuit boards
96
7.2
Circuit diagrams
99
8
Annual PM check procedure for eikon®e2s
108

Merrychef eikon®e2s service and repair manual
4
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
1 General information
Back to contents >
1.1 Declaration of conformity
Manufacturer
Authorised representative (brand headquarters)
Welbilt UK Limited
Ashbourne House, The Guildway,
Old Portsmouth Road
Guildford GU3 1LR
United Kingdom
Factory
Welbilt UK Limited
Provincial Park,
Nether Lane,
Sheffield, S35 9ZX
United Kingdom
Equipment details
Generic model number eikon®e2s
Description Commercial combination microwave oven
Declaration of conformity with directives and standards
The manufacturer hereby declares that this commercial combination microwave oven complies with the required directives
and standards. Please see the Installation and User Manual for further details.
Quality and environmental management
Welbilt UK Limited (Sheffield) employs a quality management system and a certified environmental management system.
Please see the Installation and User Manual for further details.
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.
Environmental protection procedures
We observe the following procedures:
§ Use of RoHS2-compliant products
§ 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 performed by a Merrychef®authorised service agent using
genuine Merrychef®replacement parts. Merrychef®will have no obligation with respect to any product that has been
improperly installed, adjusted, operated or not maintained in accordance with national and local codes or installation
instructions provided with the product, or any 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.

Merrychef eikon®e2s service and repair manual
5
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
1 General information
Back to contents >
1.4 Identifying your microwave combination oven
Position of nameplate
The nameplate is located on the rear of your microwave combination oven.
1 Model number eikon®e2s
2 Item Number
Elements of the item 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 220-230V / 50Hz
MV6 208-240V / 60Hz
00 200V
20 220V
Frequency 5 50Hz
6 60Hz
Lead A - Z Examples:A= L+N+E (1.5mm)
B = L1+L2+L3+N+E (2.5mm)
G = L1+L2+L3+N+E (4mm)
H = L+N+E (4mm)
Plug A - Z Examples:A = UK 13A 3-pin
C = 32A 3ph
D = 16A 3ph (90o)
E = 32A 1ph
Communication L USB + LAN
U USB
Version A, B A, B (pre-production)
1, 2, ... 1, 2, ... (serial production)
Accessory / Customer CF "Trend" exterior
CL "Classic" exterior
WW Specific customer
Region / Country EU Europe
US United States of America
3 Serial Number
Elements of the serial number Label Meaning
Year of manufacture 15 2015
16, ... 2016, ...
Month of manufacture 01 January
02, ... February, ...
Place of manufacture 2130 Sheffield (UK)
Production number 12345
4 Technical data
5 Manufacturer addresses

Merrychef eikon®e2s service and repair manual
6
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
1 General information
Back to contents >
1.5 About this Service and Repair manual
Purpose
This service and repair manual is intended for all trained Merrychef service technicians 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: Merrychef trained service technicians
Tasks: All servicing and repair work
Parts of this document that must be read without fail
If you do not follow the information in this 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:
§ Section 2 'For your safety'
§ The sections that describe the activity to be carried out
Safety alert symbol
Symbol Meaning
Form of warning notices
The warning notices are categorized according to the following hazard levels:
Hazard level Consequences Likelihood
DANGER Death / serious injury (irreversible) Immediate risk
WARNING Death / serious injury (irreversible) Potential risk
CAUTION Minor injury (reversible) Potential risk
NOTICE Damage to property Potential risk
Standards
This Service and Repair Manual has been written and produced in the UK, following UK and EU standards. Any additional local
country standards, outside of the UK, must be understood and adhered to.
Warns of potential injuries. Heed all the warning notices that appear after this
symbol to avoid potential injuries or death.

Merrychef eikon®e2s service and repair manual
7
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2 For your safety
Purpose
This chapter provides you with all the information you need in order to work with the microwave combination oven safely
without putting yourself or others at risk.
This is a particularly important chapter that you must read through carefully.
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 which 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.
To avoid 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 oven panels fitted and keep within sight of other personnel when testing
the oven, ensuring persons other than trained engineers are denied access.
3. The minimum number of panels should be removed, and the high voltage capacitors must be discharged before
working on the oven using a suitable Capacitor Discharge tool (see section 2.15).
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.
10. 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.
2.1 Basic safety code
Object of the safety code
This safety code aims to ensure that all persons who operate, install, service and repair the microwave combination oven have
a thorough knowledge of the hazards and safety precautions, and that they follow the warning notices given in the eikon®e2s
Installation and User manual, this Service manual and on the appliance. If you do not follow this safety code, you risk
potentially fatal injury and property damage.
Referring to the eikon®e2s Installation and User manual included in the customer
documentation
§ Read in full this chapter 'For Your Safety' 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.
CAUTION
Warning to Service Technicians:
Precautions to be observed before and during servicing to avoid possible exposure to excessive microwave energy.
1. 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).

Merrychef eikon®e2s service and repair manual
8
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
§ Damage to or loosening of hinges and latches.
§ Evidence of dropping or abuse.
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 released to the owner.
5. A microwave leakage check should be performed on each oven prior to release to the owner.
2.2 Requirements to be met by personnel and working positions
Requirements to be met by operating personnel
Personnel
Qualifications
Tasks
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
All servicing and repair work
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.
2.3 Personal protective equipment
Moving and setting up the appliance
Activity
Materials used
Personal protective equipment
Conveying within the establishment
Setting up the appliance on a work
surface, stand or in a stacking trolley.
Setting up the appliance in the
installation location
Suitable lifting gear
Forklift truck or pallet truck
Protective gloves
Safety boots
Hard hat (e.g., when heavy loads are
being lifted, working overhead, ...)
Installation, preparing for first-time use and taking out of service
Activity
Materials used
Personal protective equipment
Installing and removing (taking out of
operation) the electrical connection
Tools and equipment depending on
the task
Work wear and personal protective
equipment depending on the job that
needs doing as specified in national
regulations
Preparing the appliance for first-time
use
Instructing the user
Tools and equipment depending on
the task
Workwear as specified in country-
specific standards and directives for
kitchen work, in particular:
Protective clothing
Heat protective gloves (compliant with
EN 407 in European Union)
Safety boots

Merrychef eikon®e2s service and repair manual
9
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
Dismantling the appliance (taking out
of operation)
Suitable lifting gear
Forklift truck or pallet truck
Protective gloves
Safety boots
Hard hat (e.g., when heavy loads are
being lifted, working overhead)
Operation
Activity
Materials used
Personal protective equipment
Loading / removing food
None
Workwear as specified in country-
specific standards and directives for
kitchen work, in particular:
Protective clothing
Heat protective gloves (compliant with
EN 407 in European Union)
Safety boots
Removing and fitting parts
Tools and equipment depending on
the task
Workwear as specified in country-
specific standards and directives for
kitchen work, in particular:
Protective clothing
Heat protective gloves (compliant with
EN 407 in European Union)
Safety boots
Cleaning
Activity
Materials used
Personal protective equipment
Cleaning the cavity by hand
Handling spray bottles
Cleaning chemicals approved by the
manufacturer
Protective chemicals approved by the
manufacturer
Items of protection equipment,
depending on cleaning chemical being
used:
Breathing mask
Safety goggles
Protective gloves
Protective clothing/apron
The EC safety datasheet for the
relevant cleaning chemical contains a
more precise specification of these
items. An up-to-date copy can be
obtained from the manufacturer.
Refer to the label on the cleaning
chemical concerned.
Cleaning components and accessories
according to relevant instructions
Common household detergent: mild
on skin, alkali-free, pH-neutral and
odourless
Follow the instructions given by the
manufacturer of the cleaning chemical
you are using
Cleaning the outside of the appliance
Common household stainless steel
cleaner or hard surface cleaner
Follow the instructions given by the
manufacturer of the cleaning chemical
you are using
Repairs
Activity
Personal protective equipment
All repair work
Work wear and personal protective equipment depending on the job that needs
doing as specified in national regulations

Merrychef eikon®e2s service and repair manual
10
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.4 Intended use of the 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 of or below 275°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 section 2.2 'Requirements to be met by personnel and working positions' for the training
and qualifications requirements.
§ Personnel must be aware of the risks and regulations associated with handling heavy loads.
Requirements relating to the operating 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 section 6 of the eikon®e2s Installation and User 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 operating 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:
§ The 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.

Merrychef eikon®e2s service and repair manual
11
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.5 Warning signs on the microwave combination oven
Warning and safety signs
Area
Warning sign
Description
1
Microwaves
warning.
There is a risk of external
and internal burns of body
parts following exposure to
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 respecting the
minimum clearances.
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.
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.
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
Safety symbol
Description
6
Protective Earth (Ground)
7
Equipotential bonding

Merrychef eikon®e2s service and repair manual
12
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.6 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.
Item
Safety device
Function
Check
1
Panels can only be
removed using a
tool
Prevents live parts from being touched
accidentally
Prevents access to the moving fan from the
wiring compartment
Check that the covers are in place
2
Operating panel can
only be removed
using a tool
Prevents live parts from being touched
accidentally
Ensure that the operating panel is in
place
3
Door seal
Protects the user and outside environment
from microwave energy leaking from the
cavity
Check the door seal regularly for signs
of damage and replace it if required
4
Appliance door
Protects the user and outside environment
from hot steam and microwave energy
Check the door regularly for damage
and replace it if required
5 (no
picture)
Door interlocks
Ensures that the microwave generation
system cannot be powered when the door
is open
Check door switches:
Open the appliance door fully during
pre-heat or when the oven is at
temperature.
The Door Open message is displayed
6 (no
picture,
installed
by
customer)
Disconnection
device
Installed by the customer close to the
appliance; easily visible and accessible, 1-
or 3-pole action, minimum contact
separation 3 mm.
Used to disconnect the appliance from the
power supply during cleaning, repair and
servicing work and in case of danger
Trip the disconnection device
7 (no
picture)
Internal fuses
Prevent faulty components from drawing
too much current and causing potential fire
hazard.
Ensure that the internal fuses are
correctly rated
8 (no
picture)
Internal high
temperature
thermostats
Prevent faulty components from
generating too much heat and causing
potential fire hazard
Ensure correct operation

Merrychef eikon®e2s service and repair manual
13
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.7 Summary 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 eikon®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/ liquids (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. The operator
must take particular care when opening the appliance door if the top door
edge is below their field of vision.
Foodstuffs may also be liquid, or liquify 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.
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.
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.
2.8 Hazards and safety precautions when setting up the appliance,
during installation, preparing the appliance for use and cleaning
Please see the detailed information in section 3 ‘For your safety’ in the eikon® e2s Installation and User manual.
3.6 Hazards and safety precautions when setting up the appliance
3.7 Hazards and safety precautions during installing
3.8 Hazards and safety precautions when preparing appliance for use
3.10 Hazards and safety precautions during cleaning

Merrychef eikon®e2s service and repair manual
14
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.9 Safe working when working on the appliance
For your safety
Before starting work, familiarize yourself with the hazards described in section 3.6 ‘For your safety’ in the eikon®e2s
Installation and User manual.
Eligibility of personnel for working on the appliance
Only qualified Merrychef trained personnel from a Merrychef authorized service company are permitted to set up and work
on the appliance.
Regulations for working on 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 personal protective equipment specified in section 2.3 'Personal protective equipment'.
Moving heavy loads
WARNING
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 depending on age and gender). Observe the local occupational safety regulations.
§ Wear personal protective equipment.
Unsuitable supporting surface
WARNING
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
2.10 Hazards and safety precautions during servicing and repair
Safety hazard: heat
Danger
Where or in what situations does the hazard arise?
Preventative action
A risk of burns
From hot surfaces such as
Racks
Containers, baking sheets, shelf grills etc.
Inside the entire cavity, including all parts that are or
were inside during cooking
On the inside of the appliance door
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 specified protective clothing, in
particular protective gloves.

Merrychef eikon®e2s service and repair manual
15
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
Safety hazard: electrical power
Danger
Where or in what situations does the hazard arise?
Preventative action
A risk of electric
shock
Live parts:
Under covers
Under the control panel
On the appliance and on adjacent metal parts
On the appliance and on adjacent metallic accessories
Work on the electrical system must only
be performed by qualified electricians
from an authorized customer service
company
Before removing the covers:
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
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.
Dead working should be the normal method of carrying out work on electrical equipment or circuits. Live working should only
be carried out in particular circumstances where it is unreasonable to work dead.
No person shall be engaged in any work activity on or so near any live conductor (other than one suitably covered with
insulating material so as to prevent danger) that danger may arise unless;
a) It is unreasonable in all the circumstances for it to be dead; and
b) It is reasonable in all the circumstances for the service technician to be at work on or near it while it is live; and
c) Suitable precautions (including where necessary the provision of suitable protective equipment) are taken to prevent
injury.
When working on the oven it is important that the earthing of the power supply to the equipment is adequate and efficient.
In customers' premises this is likely to be unknown, so it is important to carry out a test to demonstrate the efficacy of the
earthing. The safe way to do this is to measure the earth loop impedance of the power supply using an instrument designed
for that purpose. If the test indicates an inadequate earth, the customer must be informed that the work cannot continue until
it has been rectified.
Simple 'Go/No go' plug-in testers will in general only provide a polarity check and an indication that an earth may be present,
but not its effectiveness.
Safety hazard: mechanical parts of the appliance
Danger
Where or in what situations does the hazard arise?
Preventative action
Risk of cuts from
sharp edges
During servicing work
When handling sheet-metal parts
Exercise caution when performing this
action
Wear personal protective equipment
Risk of body parts
being crushed if
the appliance tips
over or falls off
When the appliance is being moved e.g., to gain better
access to the connections
Always observe the requirements for
the supporting surface

Merrychef eikon®e2s service and repair manual
16
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
Safety hazard: moving heavyweights
Danger
Where or in what situations does the hazard arise?
Preventative action
Risk of injury from
overstressing your
body
When moving the appliance
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
Safety hazard: moving appliances supported on a wheeled base
Danger
Where or in what situations does the hazard arise?
Preventative action
Risk of crushing of
body parts
While appliances are being moved on a wheeled platform
When servicing, engage the parking
brake on the wheels
Risk of hands and
feet being pinched
Risk of electric
shock from live
parts
While appliances are being moved on a wheeled platform
Disconnect the appliance from the
electrical supply before moving it
Safety hazard: smoke or fire
Danger
Where or in what situations does the hazard arise?
Preventative action
Risk of fire /
smoke from
defective electrical
components or
wrong electrical
connections
If one of the electrical components is defect, for example
due to a short circuit, or if the internal wiring is refitted
incorrectly when servicing/repairing the oven
Never use electrical spare components
which failed in a dedicated test or which
bear visible damages
Carefully refit electrical connections
using the wiring diagrams provided in
this manual
Safety hazard: electronic component damage
Danger
Where or in what situations does the hazard arise?
Preventative action
Risk of electronic
component
damage within
oven
The human body can store enough static electricity to
damage the electronics within the oven, especially the
QTS & SRB boards
When working on the QTS, or SRB, and
associated wiring, anti-static
precautions must be taken, such as
wearing an ESD wrist strap. IMPORTANT
- oven power supply and all capacitors
must be proved dead first

Merrychef eikon®e2s service and repair manual
17
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.11 Hazards and safety precautions when taking the appliance out of
service
Safety hazard: electrical power
Danger
Where or in what situations does the hazard arise?
Preventative action
A risk of electric
shock
From live parts
Under covers
Under the operating panel
Work on the electrical system must only
be performed by qualified electricians
from an authorized customer service
company
Safety hazard: moving heavyweights
Danger
Where or in what situations does the hazard arise?
Preventative action
Risk of injury from
overstressing your
body
When moving the appliance onto and off the moving
equipment
§ 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
Where or in what situations does the hazard arise?
Preventative action
Risk of body parts
being crushed if
the appliance tips
over or falls off
When the appliance is being moved e.g., to gain better
access to the connections
Ensure oven is level and stable
Always observe the requirements for
the supporting surface when taking the
appliance out of service; see section 3
‘For your safety’ in the eikonÒe2s
Installation and User manual
Risk of slipping on
damp kitchen
floor
In front of the appliance
Ensure that the floor around the
appliance is dry at all times

Merrychef eikon®e2s service and repair manual
18
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.12 Safe working during electrical installation
For your safety
Before starting work, familiarize yourself with the hazards described in section 3.7 ‘For your safety’ in the eikon®e2s
Installation and User manual.
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 section 2.3 'Personal protective equipment'.
Live components
DANGER
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 accessories, is connected
to an equipotential bonding system.
Residual-current device (RCD)
The installation regulations require protection by a residual-current device (RCD). Suitable
residual-current devices meeting the relevant national regulations must be used.
If the installation includes more than one appliance, one residual-current device must be
provided for each appliance.
Disconnection device
An easily accessible all-pole disconnection device with a minimum contact separation 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 electrical supply
for cleaning, repair and installation work.
Fitted frequency-converter
The appliance is fitted with one frequency converter (FC) and EMC mains input filters.
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.
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 of 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 of 30mA*: insensitive to
nuisance tripping.
§ *Local national regulations may require lower trip ratings, such as in North America. In which case these lower trip
threshold ratings must be adopted, ensuring the dedicated device has a high immunity to nuisance tripping.
Note. Residual Current Devices (RCDs) are also known by other terms, such as Earth Leakage Circuit Breakers (ELCBs), Safety
Switches, Ground Fault Interrupters (GFIs) and Ground Fault Circuit Interrupters (GFCIs). These should not be confused with
over current protection.

Merrychef eikon®e2s service and repair manual
19
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
2.13 Electrical installation requirements
Circuit Breakers (MCB ~ Miniature Circuit Breakers)
For over current protection, a Type ‘D’ circuit breaker (designed specifically for this type of equipment) must be fitted, as a
recommend alternative a higher rated type ‘C’ type breaker can be used (see below). 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. An individual, suitably rated over current circuit breaker should be fitted for each
appliance installed, along with a separate dedicated Residual Current Device (Ground Fault Circuit Interrupter).
Model
Recommended Circuit Breaker
(per phase)
Alternative Recommended
Circuit Breaker (per phase)
eikon e2s standard power
D16
C20
eikon e2s high power 1 phase
D32
C40
eikon e2s high power 3 phase
D16
C20
Residual Current Device (RCD)
The installation regulations require protection by a Residual Current Device (Ground Fault Circuit Interrupter). Suitable residual
current devices, with a high immunity to nuisance tripping, meeting the relevant national regulations must be used. As long
cable runs can be a factor in nuisance tripping, they should be avoided.
If the installation includes more than one appliance, one residual-current (GFCI) device must be provided for each appliance.
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
Phase
Meaning
Single
phase
UK 13A models are fitted with a moulded plug to BS1363, fused at
13A.
EU 16A models are fitted with a moulded plug to CEE 7/7 (Type F
Schuko) rated at 16A
30A models are fitted with a blue 32A plug to IEC 60309 (EN
60309).
Connected to a dedicated RCD (GFCI) protected supply, with
appropriate circuit breaker as detailed above.
Twin phase
Twin phase models should be connected as shown (the twin
phase oven requires a three phase supply, utilising L1 & L2 as two
separate single phases, L3 is not used).
30A models are fitted with a red 32A plug to IEC 60309 (EN
60309).
EU 16A models are fitted with a red 16A 90oplug to IEC 60309 (EN
60309).
Connected to a dedicated RCD (GFCI) protected supply, with
appropriate circuit breaker as detailed above.
Single
phase 60Hz
(two pole)
Single phase models, utilising L1 & L2 split phase supply (240V) or
L1 & L2 from a three phase supply (208V). Neutral is not used.
15A models are fitted with HBL5666C NEMA 6-15P & 15A
HBL4570C NEMA L6-15P plugs.
20A models are fitted with a HBL5466C NEMA 6-20P plug.
30A models are fitted with YP-91L NEMA 6-30P & HBL2621 NEMA
L6-30P plugs.
Connected to a dedicated RCD (GFCI) protected supply, with
appropriate circuit breaker as detailed above.
L1
L2

Merrychef eikon®e2s service and repair manual
20
_______________________________________________________________________________________________________________________________
_______________________________________________________________________________________________________________________________
2 For your safety
Back to contents >
Please refer to electrical installation data for other country specific models.
Equipotential bonding
An equipotential bonding point is provided on the rear panel of the appliance for independent earth (not fitted to US
models).
(GND) connection
Example phase loading diagram
Loading per phase is not equal. Therefore, it is recommended to connect other electrical equipment to a separate L3+N from
the mains supply.
_________________________________________
208V, Two Pole 240V, Two Pole
L1, L2 & E L1, L2 & E
RED
Rear view of plug
Plug Type:
Three Phase 32A
IEC 60309
[EN60309]
L1+L2+N+E
[L3 is not used]
16A ‘D’
BLUE
Rear view of
plug
Plug Type:
Single Phase
32A
IEC 60309
[EN60309]
L1+N+E
EU plug
16A
CEE 7/7
(Type F
Schuko)
16A ‘D’
UK plug
13A fused
BS1363
16A ‘D’