Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
1
eikon
TM
CAUTION MICROWAVE EMISSIONS:
DO NOT BECOME EXPOSED TO EMISSIONS FROM THE
MICROWAVE GENERATOR OR PARTS CONDUCTING
MICROWAVE ENERGY.
Service & Parts Manual
eikon e4s
SYMBOLS
The symbols below are used, where applicable, as visual guidance throughout this manual.
DANGER
This symbol is shown if there is a high risk of severe personal physical injury. The relevant safety precautions MUST
be observed and implemented at all times.
WARNING
This symbol is shown if there is a possible risk of personal physical injury or if damage may occur to the equipment.
The relevant safety precautions MUST be observed and implemented at all times.
INFORMATION
This symbol is used to highlight useful or important information. For example: The manual consists of main sections
(tab markers on the extreme left and right of the pages), followed by the main subject heading, sub-headings and
text. Text with a reference number or letter, such as (1) refers to the same reference on the image.
1
2
Service & Parts Manual original Instructions
art Number 32Z3871 US
P
Issue 3
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
3
SAFETY &
REGULATIONS
PRODUCT
DETAILS
TESTING
COMPONENTS
SERVICINGSPARES &
REPLACEMENT
FAULT FINDINGELECTRICAL
CIRCUITS
COMMISSIONING
CONTENTS
SAFETY & REGULATIONS
1 SAFETY REQUIREMENTS 4
1.1 Important: 4
PRODUCT DETAILS
2 PRODUCT OVERVIEW & FUNCTIONS 5
3 MAIN FEATURES 6
4 TECHNICAL SPECIFICATIONS 7
4.1 Speci cations 7
4.2 Serial Number (Rating Plate): 7
5 INSTALLATION 8
5.1 OVEN LOCATION AND POSITIONING 8
6 ELECTRICAL INSTALLATION 9
7 QUICK START GUIDE: QUICK SERVICE OVEN 10
7.1 START UP 10
7.2 USING A COOKING PROGRAM 11
8 OPERATING GUIDE: FULL SERVICE OVEN 12
8.1 easyToUCH MAIN MENU & KEYBOARD SCREEN 12
8.2 DEVELOPMENT MODE: CREATING A COOK PROGRAM 13
8.3 PRESS & GO 14
8.4 USING A COOKBOOK PROGRAM 14
8.5 CHANGING THE OVEN TEMPERATURE 15
8.6 VIEWING & EDITING PROGRAMS 15
8.7 ADDING A NEW PROGRAM GROUP 16
8.8 MOVE A PROGRAM WITHIN A PROGRAM GROUP 16
8.9 ADDING A PROGRAM TO A GROUP 17
8.10 MANAGING PROGRAM GROUPS 17
9 OVEN CONTROL SETTINGS 18
9.1 Oven mode/navigation settings (A) 18
9.2 Language options (B) 18
9.3 Oven temperature settings and labels (C) 18
9.4 Recipe counters (E) 19
9.5 Date and Time settings (F) 19
9.6 Sound levels (G) 19
9.7 Oven Timer (H) 19
9.8 USB oven programs (J) 20
9.9 Temperature Band (K) 20
9.10 Change Password (L) 20
9.11 Screen saver (M) 20
10 COOLING THE OVEN DOWN BEFORE CLEANING 21
10.1 Oven cool down 21
10.2 Preparing to clean the oven 21
11 Cold oven CLEANING INSTRUCTIONS e4s 22
SERVICING
12 SERVICING THE OVEN 23
12.1 Servicing Procedure: 23
12.2 Enter Service mode: 23
13 ERRORS & DIAGNOSTICS 24
13.1 ERROR MESSAGES 24
13.2 COPYING ERROR MESSAGES: 24
13.3 ERROR LOG 24
13.4 OVEN COUNTERS 24
13.5 VISUAL VIEW 25
14 FIRMWARE UPDATES 26
TESTING COMPONENTS
15 OVEN TESTING 29
15.1 Equipment required 29
15.2 Earth/Insulation Test: 29
15.3 Screen calibration: 29
15.4 OVEN TESTS 30
15.5 Microwave Power Test 30
15.6 Microwave Leakage Test 31
15.7 Temperature Control Test 32
15.8 Soak Test 33
15.9 Recommission Test 33
16 HIGH VOLTAGE COMPONENTS 34
16.1 Power Transformer Test 34
16.2 High Voltage Recti er Test (Diode) 34
16.3 High Voltage Capacitor Test 35
16.4 High Voltage Magnetron Test 35
17 MAINS VOLTAGE COMPONENTS 36
17.1 Door Interlock Adjustment 36
17.2 Convection Fan Motor & Controller 37
SPARES & REPLACEMENT
18 OVEN COMPONENTS 38
19 SRB & QTS Circuit Boards 40
19.1 SRB replacement 40
19.2 QTS replacement 40
19.3 PM (Personality Module) replacement 41
20 SPARE PARTS EXPLODED VIEW 42
21 SPARE PARTS 43
FAULT FINDING
22 ERROR CODES DISPLAYED 45
ELECTRICAL CIRCUITS
23 SRB & QTS Circuit Boards 47
23.1 QTS LEDs 47
23.2 QTS Terminal Locations 47
23.3 SRB LED’s 48
23.4 SRB Terminal Locations: 49
24 CIRCUIT DIAGRAMS 50
24.1 POWER CONNECTIONS e4s 52
24.2 CONTROL CIRCUIT e4s 53
24.3 HEATER CIRCUIT e4s 54
24.4 MICROWAVE CIRCUIT e4s 55
COMMISSIONING
25 Commissioning the oven 56
25.1 Initial installation 56
25.2 After Service 56
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Service & Parts Manual original Instructions
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art Number 32Z3871 US
Issue 3
SAFETY &
REGULATIONS
1.1 Important:
This manual provides technical guidance for engineers
who have successfully undertaken a recognised product
familiarisation 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.
1.1.1 Before attempting to repair the oven, check the oven for
microwave emissions using a calibrated microwave emission
detector.
1.1.2 Check that the oven is not emitting microwaves, even
when supposedly not in operation.
1.1.3 Check that the oven is not operating continuously, whether
the display indicates cooking or not.
1.1.4 Never manipulate the mains power lead whilst it is live.
1.1.5 Before removing the oven casing ALWAYS isolate the
oven from the mains electricity power supply; switch o and
disconnect the oven plug from the wall socket, turn o isolator
switch to disconnect xed wired ovens. NOTE: The oven switch
does not provide adequate protection against electric shock as it
does not isolate all of the internal wiring from the mains.
1.1.6 Ensure Electrical supply is locked-o to prevent the oven
from being inadvertently powered up.
1.1.7 Do not leave the oven unattended without the oven panels
tted and keep within sight of other personnel when testing the
oven, ensuring persons other than trained engineers are denied
access.
1.1.8 The minimum number of panels should be removed and
the HT capacitors must be discharged before working on the
oven using a suitably insulated 10 MΩ Resistor.
1.1.9 Temporary insulation should be used to prevent accidental
contact with dangerous conductors.
1.1.10 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.
1.1.11 Only use electrically rated screwdrivers for adjusting ‘Pots’
etc., ensuring the tool touches nothing else.
1.1.12 Ensure the Test Equipment is set correctly before use.
1.1.13 Test equipment such as meter test leads or clamps must
be tted and removed whilst the unit is dead, for each and every
test.
1.1.14 Do not undertake functional Magnetron testing with the
oven panels removed.
1.1.15 Avoid touching the Test Equipment, unless necessary for
the operation.
1.1.16 Upon completion of a service follow the steps for
‘Commissioning the oven’ under the Commissioning section of
this manual.
1 SAFETY REQUIREMENTS
DANGER:
BEFORE REMOVING THE OVEN CASING, ISOLATE
THE OVEN FROM THE MAINS ELECTRICITY
POWER SUPPLY; SWITCH OFF, DISCONNECT
OVEN PLUG FROM WALL SOCKET, TURN OFF
ISOLATOR SWITCH TO DISCONNECT FIXED
WIRED OVENS AND LOCKOFF.
WARNING:
ALWAYS DISCHARGE THE HT CAPACITORS
BEFORE WORKING ON THE OVEN USING A
SUITABLY INSULATED 10M RESISTOR.
IF SMOKE IS OBSERVED:
SWITCH OFF THE OVEN DISCONNECT/ISOLATE
FROM THE ELECTRICAL SUPPLY
KEEP THE OVEN DOOR CLOSED TO STIFLE ANY
FLAMES.
CAUTION
WARNING TO SERVICE TECHNICIANS
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING
SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE
MICROWAVE ENERGY
1.1.17 Do not operate or allow the oven to be operated
with the door open.
1.1.18 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.
Evidence of dropping or abuse.
1.1.19 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.
1.1.20 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.
1.1.21 A microwave leakage check to verify compliance
with the Federal Performance Standard for the U.S.A. or
the Canadian Regulation, HEALTH AND WELFARE, SOR/79
920 for Canada should be performed on each oven prior
to release to the owner.
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
5
PRODUCT
DETAILS
2 PRODUCT OVERVIEW & FUNCTIONS
CONSTRUCTION
Stainless Steel cavity and casework.
CONTROL SYSTEM
Colour touchscreen, icon driven.
Storage for up to 1024 programs with 6 stages per
cooking program providing a user instruction for
each stage.
USB memory stick data transfer.
Support for optional remote communications
Ethernet module.
Safety system: ensures control area temperature is
within limits.
MICROWAVE POWER
Two magnetrons.
Distribution system, rotating active antennae.
Microwave settings, o or 5-100% in 1% increments.
Safety system: agency approved monitored
interlock door system, current monitoring and
overheat detection for magnetrons.
CONVECTED HEAT
Temperature settings 0°F o and from 212°F to
527°F in 1°F steps.
Distribution system, recalculating air ow
impingement.
Convection fan setting, 10-100% in 1% increments.
Safety system: oven cavity overheat detection.
How it works:
The convection fan pulls air in through the Particle lter (1)
which removes the majority of particulates from the air ow.
The air is then heated and returned to the cavity through the catalyst
(2) and impinger plates (3) to produce an even heat pattern in the
oven. This heat layout minimises the areas where grease can build up,
allowing food to cook evenly to produce a crisp golden nish.
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 brie y 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 FS mode or a
recipe selection if in QSR 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 su ciently
reduced (cavity temperature of 122F).
The safety relay is de-energised and the QTS & SRB
boards remain active.
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Service & Parts Manual original Instructions
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art Number 32Z3871 US
Issue 3
PRODUCT
DETAILS
3 MAIN FEATURES
1 ON/OFF SWITCH
ON (I) activates the oven, OFF (0) switches the
oven to standby mode. IT DOES NOT ISOLATE
INTERNAL WIRING FROM THE MAINS SUPPLY.
2 CONTROL PANEL
Touch sensitive controls (easyToUCH) for
controlling oven functions, including diagnostics
and service mode.
3 USB menuKey
A socket
, located under the logo, allows a USB
menuKey to be used to update the cooking
programs and oven rmware on the pcb’s.
4 OVEN CAVITY
T
he oven cavity is mostly constructed from
stainless steel panels which must be kept clean
to avoid contamination of food products and
allow the oven to perform at peak e ciency.
5 IMPINGER PLATES (Upper & Lower)
Dir
ect the air in the cavity. They must be cleaned
on a regular basis, and kept free of debris.
6 OVEN DOOR
The twin-skinned door has a thermally insulated
inner section to lower the surface temperature
and incorporates a microwave choke.
7 DOOR SEAL
Provides a tight seal around the door and
must be kept clean. The seal must be checked
regularly and replaced if worn or damaged.
8 AIR FILTER
T
he air intake provides cooling air for internal
components and must be cleaned daily and
must NOT be obstructed. The lter must be in
place for the oven to function.
9 STEAM VENT
V
ents steam from the oven cavity.
10 HOT AIR FAN
Circulates hot air through the catalytic
convertors and oven cavity.
11 RATING PLATE
The rating plate, located on the rear oven cover,
states the Model, Serial Number, Electrical
Ratings and Manufacturers telephone number.
12 MAINS ELECTRIC POWER CABLE
Located on the rear of the oven and must be
replaced if worn or damaged.
13 OH STAT ACCESS BOLT
To reset cavity OH Stat remove bolt to gain
access to stat.
13
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
7
e4s
1024
<40/104
591x584x750
23.3x23.0x29.5
218x375x361
8.6x14.8x14.2
29.5 (1800)
1800
3.2
50 or 60
230 (50Hz), 208/240 or 220 (60Hz)
6.2
86.3 (190)
<60
750mm
29.5in
584mm
23.0in
591m
23.3in
643mm
25.3in
356mm
14.0in
PRODUCT
DETAILS
4 TECHNICAL SPECIFICATIONS
4.1 Speci cations
Description unit
Touch screen controls programs
Ambient operating temperature °C/°F
External HxWxD mm
External HxWxD inches
Internal HxWxD mm
Internal HxWxD inches
Cooking chamber Ltr (cu.ins)
Power output microwave Watts
Power output convection kW
Power supply Hz
Power supply V
Power supply kW
Unpackaged oven weight nett Kg (lbs)
Sound pressure level dB(A)
4.2 Serial Number (Rating Plate):
Serial number: YY MM SITE SERIAL
i.e. 10 06 2130 12345 (1006213012345)
Oven manufactured 2010 in June at She eld (UK),
production number 12345.
Model Number: MODEL CONVECTION MICROWAVE
VOLTAGE HERTZ LEAD PLUG COMMUNICATION
VERSION CUSTOMER/ACCESSORY COUNTRY
i.e. e4s S T MV 6 D F U 1 GM US
(e4sSTMV6DFU1GMUS)
model e4s, 3200W, 1800W, 208 or 240, 60Hz,
2P+GND (30A), Moulded NEMA 6-30P Plug, USB, 1,
General Market, USA.
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Service & Parts Manual original Instructions
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Issue 3
1
A A
A
B
PRODUCT
DETAILS
The oven will not operate without the AIR
FILTER correctly tted in place.
HANDLING & STORAGE:
When moving an oven always observe and follow
National and local requirements for lifting and
moving heavy objects. Do not use the oven door
handle to lift oven.
When not in use, electrically disconnect the oven
and store safely in a dry cool place, do not stack
ovens.
5 INSTALLATION
5.1 OVEN LOCATION AND POSITIONING
Choose a site away from major heat sources.
DO NOT position so that hot air is drawn in from
fryers, grills, griddles, etc.
A heat barrier to the height of the oven must be
installed if sited next to a burner, stove or range.
Place the oven on a permanent nonslip/
non ammable at surface that is LEVEL, STABLE and
STRONG enough for the oven and contents.
Allow a minimum clearance (A) of 2 inches (50mm)
around the oven for hot air to escape.
Allow su cient clearance (B), in front of the oven for
the door to open fully.
Position the oven at least 36 inches (916mm) (C)
above the oor.
The air intake is located at the lower front of the
oven (1) and it is important that the air ow is
as cool as possible and not preheated by other
appliances such as burners, stoves, ranges, fryers,
grills and griddles as this will deteriorate the life
and performance of the oven.
Do not a x labels/stickers to oven other than those
applied or approved by the manufacturer.
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
9
PRODUCT
DETAILS
DANGER!
THIS APPLIANCE MUST BE EARTHED.
FAILURE TO DO SO MAY RESULT IN
ELECTRIC SHOCK AND DEATH.
For all cord connected appliances:
GROUNDING INSTRUCTIONS
This appliance must be grounded. In the event of an
electrical short circuit, grounding reduces the risk of
electric shock by providing an escape wire for the electric
current. This appliance is equipped with a cord having
a grounding wire with a grounding plug. The plug must
be plugged into an outlet that is properly installed and
grounded.
WARNING - Improper use of the grounding can result in the
risk of electric shock.
Consult a quali ed electrician or Serviceman if the
grounding instructions are not completely understood
or if doubt exists as to whether the appliance is properly
grounded.
Do not use an extension cord. If the power supply cord is
too short, have a quali ed electrician or serviceman install
an outlet near the appliance.
For a permanently connected appliance:
GROUNDING INSTRUCTIONS
This appliance must be connected to a grounded, metallic,
permanent wiring system, or an equipment grounding
conductor should be run with the circuit conductors and
connected to the equipment grounding terminal or lead
on the appliance.
6 ELECTRICAL INSTALLATION
IN CASE OF RADIO OR TELEVISION INTERFERENCE
This equipment generates and uses radio frequency
energy and if not installed and operated correctly, in
strict accordance with the manufacturer’s instructions,
may cause harmful interference to authorized radio
communication services.
This product complies with the relevant requirements
of CFR 47 Ch.1 Part 18, which are designed to provide
reasonable protection against such interference. However,
there is no guarantee that interference will not occur in
a particular installation. If this equipment does cause
interference to radio or television reception, which can be
determined by turning the equipment o and on, the user
is encouraged to try and correct the interference by one or
more of the following measures:
1) Re-orientate the receiving antenna.
2) Relocate the microwave with respect to the receiver.
3) Plug the microwave into a di erent outlet so that the
receiver and microwave are on di erent branch circuits.
If necessary the user should consult the dealer or an
experienced radio/television technician for additional
suggestions.
Note: Modi cations should only be carried out by the
manufacturer or authorized representative to ensure
continuing conformance.
This device complies with Part 18 of the FCC rules.
POWER SUPPLY REQUIREMENTS
This appliance should be connected to a suitable
electricity supply which can cope with the switching
on surge that occurs with certain types of catering
equipment, including microwaves. Because of this
requirement, ,we strongly recommend that a separate,
suitably rated supply is installed for the oven.
The supply for the oven should be tted with a type “C” or
Time Delay circuit breaker rated at:
30 AMP for 208V electrical supply (2P+GND)
30 AMP for 240V electrical supply (2P+GND)
If the oven is hard wired to the supply, a double-pole
isolator switch with a contact gap of at least 1/8 inch
(3mm) should be tted.
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Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
PRODUCT
DETAILS
2
1
3
4
5
7.1 START UP
1. Switch the oven on;
Make all the relevant safety checks and ensure the
oven is clean and empty before pressing the oven
switch down to activate the oven.
2. The easyToUCH screen illuminates with the
display brie y showing the serial number and oven
data.If required, to keep the data on the screen,
Lightly tap the screen once to freeze the display, tap
again to continue.
3. When the oven is setup with two or more
preheating temperatures a choice is displayed.
Scroll arrows at the bottom of the screen indicates
there are more temperature choices not shown
on screen, if necessary, use the scroll arrows, then
select the temperature required to start preheating
the oven.
4. During preheating the display shows the progress
as the oven heats up to the set temperature. (To
stop the oven heating touch the red ‘X’ symbol.)
5. The oven is ready to use when the ‘COOKBOOK’ is
displayed.
STOP/CANCEL
The easyToUCH screen display, layout and icons
shown herein, are for guidance purposes only and are
not intended to be an exact representation of those
supplied with the oven.
MULTIPLE LANGUAGES INSTALLED
DISPLA
YS ALL COOKING PROGRAMS (Optional)
SHOWS PROGRAM GROUPS
FAVOURITES (Optional)
CHANGE OVEN TEMPERATURE (Optional)
PROGRAM GROUP
Each group contains a
collection of cooking
programs.
COOKBOOK DISPLAY
7 QUICK START GUIDE: QUICK SERVICE OVEN
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
11
PRODUCT
DETAILS
1
5
6
2
3
4
1. Select a program group, for example, ‘BURGERS’ to
displa
y the individual cooking programs.
2. Select a cook program to start, for example, 2
BURGERS.
3. Follow instructions if displayed on the screen.
4. Touch the green tick to cook.
The cooking time counts down for each program
stage.
5. When the program ends a red bar is displayed
usually with an audible sound - open the door or
touch the red ‘X’ to return to the cook program.
Note; opening the oven door during cooking stops the
cooking program and displays a warning. Closing the
door allows the user to continue or cancel the cooking
program.
Taking all the necessary
precautions to ensure you do not
burn yourself, open the oven door
to place the food into the hot oven
and close the door.
PROGRAM STAGE
7.2 USING A COOKING PROGRAM
AIR FILTER
IMPORTANT:
C
lean the AIR FILTER (6) in the base of the oven
every day and ensure that the air lter is in place
prior to operating the oven. See ‘CLEANING &
MAINTENANCE’.
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Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
PRODUCT
DETAILS
1
2
3
4
5
6
8.1 easyToUCH MAIN MENU &
KEY
BOARD SCREEN
MAIN MENU SCREEN:
1. DEVELOPMENT MODE enables multistage cooking
programs to be developed, then stored under a
name and symbol for reuse.
2. PRESS & GO allows quick access to use the
cooking programs that are already stored.
3. COOKBOOK contains the oven’s cooking
programs. It displays Favourites, Cooking Program
Groups and a complete listing of all cooking
programs available.
4. CLEANING/TEMP CHANGE allows the oven
temperature to be changed and the oven to be
prepared for cleaning with reminders displayed to
assist during the cleaning process.
5. SETTINGS are used to control the oven settings
and functions including time and language, loading
cooking programs and for service and maintenance
purposes.
6. KEYBOARD SCREEN is used to enter an authorised
password to enter data for programs and may
restrict operator access to some functions.
For Program Names, Program Group Names
and Passwords use 1-20 characters in 2 lines
max.
For Stage instructions use 1-54 characters in
5 lines max.
8 OPERATING GUIDE: FULL SERVICE OVEN
DEVELOPMENT
MODE
MENU
SHORTCUT
COOKBOOK
CLEANING/
TEMP CHANGE
SETTINGS
SCREEN
KEYBOARD
SCROLL
KEYBOARD
PREVIOUS
SCREEN
Backspace
CLEAR SCREEN
ENTER / OK
SPACEBAR
RETURN
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
13
PRODUCT
DETAILS
2
6
3
4
5
1
7
1
5
2
6
3
4
Running and saving the program
1. Select OK to con rm the Program.
2. Run the program (optional).
If the results are not satisfactory, select the
backspace, change the cooking settings and retest.
3. Select the save Cookbook symbol to record the
program to the cookbook.
4. Select the camera icon to open pictures.
5. Select a picture to represent the program. (Use
the scroll arrows for more pictures.)
6. Enter the name for the cooking program, using
a maximum of 20 characters, for example, ‘1
BURGER’, then select OK to save the program to the
Cookbook.
A green tick on a book indicates the program has been
saved to the Cookbook.
8.2 DEVELOPMENT MODE: CREATING A
COOK PROGRAM
1. Select the ‘chef’s hat’ symbol from the main menu
to enter development mode.
Enter stage 1 of the program
2. The temperature displays the set preheated oven
t
emperature.
To increase or decrease the temperature required,
select the temperature symbol (2), enter the
temperature in the keypad within the limits
displayed and select OK.
3. Select and set the cooking time up to a maximum
of 10 minutes for each stage.
For example : Enter 110 (1minute and 10 seconds).
4. Select and set the Microwave Power [0, 5-100%]
5. Select and set a Fan speed (if available) within the
limits shown on screen.
6. Select the information icon to enter an instruction
(Optional). The instruction appears in the display at
the beginning of that stage.
For example : ‘Stage 1 place product in the oven’.
Enter stage 2 of the program (Optional).
7. Programs can have up to a maximum of 6 stages.
R
epeat the steps 2-6 from stage 1 above.
WARNING: ENSURE PRODUCT IS IN THE
OVEN AND ALL SAFETY PRECAUTIONS
ARE FOLLOWED BEFORE RUNNING THE
PROGRAM.
Enter the cooking time
on the pad
.
Select OK to accept the
time.
To Set the cooking Time
select the Time symbol.
Example below; setting the cooking time (step 3):
STAGE 1
DISPLAYED
ADD STAGE
STAGE 2
DISPLAYED
BACK TO STAGE 1
CLEAR
DELETE STAGE
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Issue 3
PRODUCT
DETAILS
1
1
2
2
3
5
3
4
1 2 3
Change the
or
der of a
selected item
shown in the
Press & Go
screen.
Move a
selected item
to or from the
Press & Go
screen.
Select to scroll
a list up or
down.
8.3 PRESS & GO
Running a c
ooking program from the Press &
Go menu.
1. Select ‘PRESS & GO’ from the main menu screen.
2. Select the item required to cook.
3. The display shows the cooking time count down.
The timer bar turns red to indicate the cooking cycle
has nished.
Choosing which cooking programs are shown in
the ‘PRESS & GO’ menu screen.
1. After selecting ‘PRESS & GO’ from the main menu
screen, select the EDIT symbol.
2. Two lists are displayed, the ‘PRESS & GO’ menu
items are shown in the upper list and the lower list
shows other menu items which are available. Both
lists can be scrolled up or down using the arrows on
the extreme right.
3. Select an item, then choose whether to change its
order within the menu or to remove it into the lower
list.
4. Select an item to move into the upper list, making
it available in the ‘PRESS & GO’ menu.
5. Select backspace to return to the menu screen
when nished.
WARNING: ENSURE THERE IS FOOD
PRODUCT IN THE OVEN BEFORE
STARTING A COOKING PROGRAM.
WARNING:
HOT SURFACE HAZARD
8.4 USING A COOKBOOK PROGRAM
T
o nd the required Program in the cookbook.
1. Select ‘COOKBOOK’ from the main menu screen.
2. Select the ALL MENUS symbol.
3. Use scroll up/down arrows to nd the program.
NOTE: if an image has a red line around it the oven
temperature is set too high or too low for that
recipe. See ‘CHANGING THE OVEN TEMPERATURE’.
Taking all the necessary precautions to ensure you
do not burn yourself, place the food product into
the hot oven cavity and close the door.
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8.5 CHANGING THE OVEN
TEMPER
ATURE
1. Take note of the temperature required for the
recipe and select OK.
2. Select the temperature symbol.
3. An asterisk next to the number indicates the
present oven temperature, select the required oven
temperature for the recipe. Once the oven is at the
required temperature continue from selecting the
‘COOKBOOK’ in step 1.
4. Select the required cooking program to start
cooking.
For example, ‘1 BURGER’.
5. The program either starts immediately displaying
a countdown timer, or an instruction is displayed
rst; follow the stage instruction then select OK to
start cooking. If the oven door is not opened within
30 seconds a warning message appears.
6. The cooking timer counts down to zero and
makes a sound to indicate an operator action is
required at the end of a cooking stage or the end of
a cooking program.
Once the cooking program has nished, opening
the oven door to remove the food returns the
display to the ‘COOKBOOK’ screen.
Note; opening the oven door during cooking stops the
cooking program and displays a warning. Closing the
door allows the user to continue or cancel the cooking
program.
To check the oven temperature when cooking, lightly
tap the temperature displayed, the oven cavity
temperature is shown with an asterisk.
8.6 VIEWING & EDITING PROGRAMS
1. Select ‘COOKBOOK’ from the main menu screen.
2. Select the ALL MENUS symbol.
3. Select ‘EDIT COOKBOOK’.
4. Use the up/down scroll arrows on the right side of
the screen to nd the cooking program, for example
1 BURGER and select the view/edit cooking program
symbol.
5. View or adjust the program as required, see
Development mode for details.
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Scroll to show
pr
ograms in
the current
Program
Group
Move the
selected
program within
the Program
Group
Program Group
8.7 ADDING A NEW PROGRAM
GR
OUP
To add a new Program Group.
1. Select ‘COOKBOOK’ from the main menu
screen.
2. Select ‘EDIT COOKBOOK’.
3. Select the ‘ADD A NEW GROUP’ symbol.
4. Select the camera icon to open pictures.
5. Select a picture to represent the Group. (Use
the scroll arrows for more pictures.)
6. Enter a name for the new Program Group (max.
20 characters) and select OK to save the Program
Group to the Cookbook.
Select backspace to return to the ‘COOKBOOK’.
8.8 MOVE A PROGRAM WITHIN A
PROGRAM GROUP
Example moving the position of the ‘4 BURGERS’
cooking program within the program group called
‘BURGERS’.
1. Select ‘COOKBOOK’ from the main menu screen.
2. Select the ‘BURGERS’ program group.
3. Select ‘EDIT COOKBOOK’.
4. Use the up/down scroll arrows on the right side
of the upper part of the edit screen to view the
cooking programs in the group.
Then select the cooking program to be moved (‘4
BURGERS’) and use the up/down arrows on the
left side of the upper screen to move the selected
program within the program group.
Select backspace to return to the ‘COOKBOOK’
screen.
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8.10 MANAGING PROGRAM GROUPS
To move a program position in a Program
G
roup
1. Select ‘COOKBOOK’ from the main menu screen.
2. S
elect ‘EDIT COOKBOOK’.
3. Use the scroll arrows, up and down on the right
side of the screen to locate all the Program Groups.
4. Select the Program Group to be moved and use
the up and down arrows, on the left side of the
screen to move the selected program.
5. Select backspace to go back to the ‘COOKBOOK’.
To change the Program Group name.
Select the Program Group.
Select EDIT PROGRAM GROUP.
Enter the new name and select OK.
To delete a Program Group
Select the Program Group.
Select the DELETE Program Group symbol.
Select OK to Delete the Group.
Scroll to show
Program
Groups
Move the
selected
Program
Group
Edit the
selected
Program
Group name
Delete the
selected
Program Group
8.9 ADDING A PROGRAM TO A GROUP
To add a cooking program to an existing
PROGR
AM GROUP.
Example add Program ‘4 BURGERS’ to the program
group ‘BURGERS’.
1. Select ‘COOKBOOK’ from the main menu screen.
2. Select the ‘BURGERS’ Program Group.
3. Select ‘EDIT COOKBOOK’.
4. In the lower part of the screen use the up/down
scroll arrows on the right side to nd and select the
‘4 BURGERS’ cooking program.
5. Select the green UP arrow to add the ‘4 BURGERS’
cooking program to the Program Group in the
upper part of the screen, then select backspace to
return to the cooking programs.
6. Select backspace again to return to the
‘COOKBOOK’.
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K
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M
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L
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1. Select the ‘settings’ symbol from the main menu
screen.
2. Enter the password and select OK to display the
Settings menu (3) comprising:
A. Oven mode/navigation settings.
B. Language options.
C. Oven temperature settings and labels.
D. Service information and error logs (password
required).
E. Recipe counters.
F. Date & time settings.
G. Speaker sound levels.
H. Oven Timer (Temperature/ON/OFF).
J. USB program connection.
K. Temperature Band.
L. Change Settings/Service access passwords.
M. Screen saver.
When nished with a setting, select backspace to
return to the main settings menu.
To exit the settings menu, select backspace,
a prompt will be displayed to either ‘SAVE’ or
‘DISCARD’ any changed settings (4).
9 OVEN CONTROL SETTINGS
9.1 Oven mode/navigation settings (A)
9.1.1 Select the oven mode/navigation symbol (A)
from the ‘Settings’ menu.
9.1.2 Select ‘Quick Serve Mode’ for cooking only,
or ‘Full Serve Mode’ for cooking & development
programs or ‘Manual mode’ to manually cook only via
the ‘Chef hat’ symbol.
9.1.3 Select ‘Enable Settings’ to display an ‘unlock’
symbol on the Quick Serve Cookbook screen to allow
access to the ‘Settings’ menu.
9.2 Language options (B)
9.2.1 Select the globe symbol (B).
9.2.2 Select the checkbox of the required language
from the list shown.
9.3 Oven temperature settings and
labels (C)
9.3.1 To change the oven preheat temperature, select
the temperature symbol (C) to display the keypad,
enter the required temperature and select OK.
9.3.2 Note, the temperature options screen is only
displayed at start up when two or more temperatures
are set above minimum.
9.3.3 To change a temperature label, select the label
to display the keyboard, enter the required label name
and select OK.
For Service information & error logs (D) refer
to Servicing.
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F
G
H
9.4 Recipe counters (E)
9.4.1 Select the clipboard symbol to display a listing of
recipe counters.
9.4.2 If shown, use the arrows (bottom right) to scroll
up and down the list.
9.5 Date and Time settings (F)
9.5.1 Select the time/date symbol to display the
setting options.
9.5.2 CHANGE THE DATE: Select ‘MONTH’, enter the
correct Month on the keypad and select OK.
9.5.3 Select ‘DAY’, enter the correct Day on the keypad
and select OK.
9.5.4 Select ‘YEAR’, enter the correct last two digits of
the Year on the keypad and select OK.
9.5.5 To display the Month rst, followed by the Day
and Year, select the ‘MM-DD-YY’ checkbox. Note; the
Error Logs are recorded using these settings.
9.5.6 CHANGE THE TIME: Select ‘HOUR’, enter the
correct Hour on the keypad and select OK.
9.5.7 Select ‘MIN’, enter the correct Minutes on the
keypad and select OK.
9.5.8 Select the day name shown to cycle through to
display the correct weekday.
9.6 Sound levels (G)
9.6.1 Select the speaker symbol to adjust the volume
level suitable for the environment from none (OFF) to
the loudest (100%).
9.6.2 Select music note symbol to set LOW, MED or
HIGH tone.
9.6.3 Select the keypad symbol to switch the sound
ON or OFF when the touchscreen is pressed.
9.7 Oven Timer (H)
9.7.1 Select the thermometer/timer symbol.
9.7.2 Select the ‘Timer Enabled’ checkbox (green tick).
9.7.3 Select a weekday using the up/down arrows.
9.7.4 Select an empty ‘Time’ box (maximum of 5 per
day) or clear the box using the wipe symbol.
9.7.5 Enter the start time on the keypad and select OK.
9.7.6 Select an empty ‘Temperature’ box opposite the
Time box displaying the time just entered, or clear the
box using the wipe symbol next to it.
9.7.7 Enter the cavity temperature required on the
keypad and select OK. Note; you can also select zero
to turn the heat o . Selecting the red circle symbol will
switch the oven OFF.
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9.8 USB oven programs (J)
IMPORTANT: Downloading from a USB will clear
all the existing programs.
Check that the key has the correct number/code
for the programs you want to load into the oven
memory (1 ‘.cbr’ + ‘autoupd.ate’).
9.8.1 With the oven switched o , slide the Merrychef
badge (oven front top right) upwards and insert the
USB Memory Stick into the slot.
9.8.2 Switch the oven ON.
9.8.3 The les automatically download from the USB
showing the progress and con rmation screens for
the update.
9.8.4 On completion the oven displays the start up
screen.
9.8.5 Remove the USB and keep in a safe place.
Reposition the USB cover.
9.9 Temperature Band (K)
9.9.1 Select the ‘Temp Band’ symbol at which the oven
controls i.e. ±10°C.
9.9.2 Select the required temperature band checkbox,
shown by a green tick. Note; although the lowest
practical Temp Band should be used, if the set oven
temperature falls by more than the selected Temp
Band, the ready to cook mode and Temp Band are
deactivated until the oven reaches the preheat
temperature.
9.10 Change Password (L)
9.10.1 Select the key symbol to change the oven
passwords.
9.10.2 Select the oven Settings or Service symbol.
9.10.3 Enter the existing password and select OK to
con rm.
9.10.4 Enter the new password, select OK.
9.10.5 Con rm new password, select OK.
9.11 Screen saver (M)
9.11.1 Select the ENABLED checkbox to switch the
screen saver ON or OFF.
9.11.2 Select the time box below to enter a time delay
on the keypad from 1 to 60 minutes before the screen
saver starts and select OK to con rm.
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WARNING: DO NOT USE CAUSTIC
CLEANERS ON ANY PART OF THE
OVEN OR OVEN CAVITY AS IT WILL
CAUSE PERMANENT DAMAGE TO THE
CATALYTIC CONVERTORS
10.1 Oven cool down
IMPORTANT: the oven must be cooled down
before the cleaning processes are carried out.
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 start
the cooling cycle.
3. Taking all necessary precautions place a suitable
heaped container of ice, into the hot oven cavity.
Select the OK symbol to continue.
4. The cooling progress is displayed and takes
approximately 30 minutes.
5. The oven is now ready for cleaning. Select OK on
the screen after completing each stage.
10 COOLING THE OVEN DOWN BEFORE CLEANING
10.2 Preparing to clean the oven
For the oven to operate at peak e ciency, the
cavity, door, air lter and grease lter must be kept
clean.
A daily cleaning routine will ensure that you comply
with the required hygiene standards and will help to
maintain and prolong the e ciency of your oven.
Equipment required (not supplied):
Non-caustic proprietary branded oven cleaner,
heat proof gloves, protective rubber gloves, non–
abrasive nylon scrub pad, cleaning towel and cloths,
eye protection and dust mask (optional).
CAUTION: WEAR PROTECTIVE RUBBER GLOVES
WHEN CLEANING THE OVEN.
NEVER use sharp implements or harsh abrasives
on any part of the oven.
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Complete COOL DOWN procedure and allow the oven and
accessories to cool before commencing cleaning.
DO NOT USE TOOLS
CLEAN THE OVEN:
1. R
emove any spillages with disposable paper wipes.
Use a dry clean brush to remove any food particles from
between the oven oor and the inside of the front door.
2. Wear protective rubber gloves and protective glasses,
carefully spray a non-caustic proprietary branded Oven
Cleaner onto all the internal surfaces of the oven except
the door seal (A).
DO NOT spray directly into the fan opening at the rear
inside of the oven.
3. For di cult areas, leave to soak for 10 minutes with the
oven door open.
Use a non–abrasive nylon scrub pad/sponge to clean the
cavity, roof and the inside of the door. Do not scrub the
door seal or use metallic scourers.
4. Wash o using a clean cloth and plenty of clean warm
water and dry using a fresh clean cloth or paper towel.
Replace all the cleaned oven parts.
Close the oven door and wipe the outside of the oven with
a damp cloth.
APPLY OVEN PROTECTOR:
1. Only apply to a clean oven. Spray proprietary branded
Oven Protector onto a sponge.
2. Spread Oven Protector lightly onto all internal surfaces
of the oven.
3. Spread Oven Protector lightly onto the internal surface
of the oven door avoiding the door seal.
Switch on the oven and preheat. When the oven has
reached operating temperature it will take about 30mins to
cure the Oven Protector.
Note: Oven protector turns light brown when cured.
DO NOT USE THE OVEN WITHOUT A CLEAN AIR
FILTER IN PLACE
A
11 Cold oven CLEANING INSTRUCTIONS e4s
REMOVE & CLEAN Oven Parts:
1. Remove the air lter at the base of the oven.
2. Open the oven door and remove the rack & air di user.
3. Lift out bottom impinger plate.
Wash all parts in warm soapy water. Wash o using a clean
cloth and plenty of clean, warm water.
Dry using a fresh, clean cloth.
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SERVICING
1 2 3
4
12.1 Servicing Procedure:
12.1.1 Disconnect/isolate the oven from the power
supply.
12.1.2 Check the oven is correctly installed as
described in the Installation Instructions (Product
Details section).
12.1.3 Visually check the cleanliness/condition of
the power supply/cable/gland, oven casing, cavity
and door for signs of wear, damage, distortion etc., if
required, refer to the ‘Spares & Replacement’ section.
12.1.4 Complete an ‘Earth/Insulation test’ (Testing
Components section) on the oven before switching
on.
12.1.5 Check the display for Error messages, if an
Error is shown, refer to ‘Errors & Diagnostics’ (Servicing
section).
12.1.6 Note; If a Firmware update is required, follow
the instructions under ‘Firmware Updates’ (Servicing
section) before continuing with the service procedure.
12.2 Enter Service mode:
1 On start up, tap the top right of the splash
scr
een to bypass oven preheat.
2 Enter the authorised user password, for
example, MANAGER and select OK to display the
Settings menu.
3 Select the spanner symbol.
4 Enter the service password, for example SERVICE
on the keyboar
d and select OK to display the
error log, service information and test options.
12.2.1 Check the Error Log for details of any logged
oven errors. See ‘Errors & Diagnostics’ (Servicing
section) for more details.
12.2.2 Check the ‘Oven Counters’ to nd the usage of
components and the Controls area temperature within
the cabinet. (‘Errors & Diagnostics’, Servicing section).
12.2.3 Check the operational performance of the
main components using the Visual View (‘Errors &
Diagnostics’, Servicing section).
12.2.4 Perform the Oven tests, (Testing Components
section). If required refer to the ‘Spares and
Replacement’ section for any repairs needed before
continuing with the Oven Tests.
12.2.5 Follow the procedures under the
‘Commissioning’ section before commissioning the
oven for use.
12 SERVICING THE OVEN
DANGER:
BEFORE REMOVING THE OVEN CASING, ISOLATE THE
OVEN FROM THE MAINS ELECTRICITY POWER SUPPLY;
SWITCH OFF, DISCONNECT OVEN PLUG FROM WALL
SOCKET, TURN OFF ISOLATOR SWITCH TO DISCONNECT
FIXED WIRED OVENS AND LOCKOFF.
WARNING:
ALLOW OVEN TO COOL. OBSERVE AND FOLLOW ALL
SAFETY PRECAUTIONS INCLUDING THOSE DESCRIBED
UNDER THE SAFETY REGULATIONS SECTION OF THIS
MANUAL BEFORE ATTEMPTING A SERVICE OR REPAIR.
CAUTION MICROWAVE EMISSIONS:
DO NOT BECOME EXPOSED TO EMISSIONS FROM THE
MICROWAVE GENERATOR OR PARTS CONDUCTING
MICROWAVE ENERGY.
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A
C
D
B
13 ERRORS & DIAGNOSTICS
13.1 ERROR MESSAGES
13.1.1 A description of the type of error is shown.
Check for a number following ‘ERROR:’ (A) and refer to
the Error Codes (Fault Finding section) for more details.
The Oven Serial Number, Model, UI (QTS) version and
SRB version information is also displayed below.
13.1.2 Clear the Error message by power cycling the
mains power supply to the oven (not the oven ON/
OFF switch).
13.2 COPYING ERROR MESSAGES:
13.2.1 Enter oven settings menu (B) and select the
USB symbol.
13.2.2 Slide up the USB cover and insert the USB
memory stick.
13.2.3 Select Upload Files.
13.2.4 Select Error Log.
13.2.5 Select OK to copy the Error Log to the USB
memory stick. The upload progress is shown followed
by the upload status.
13.2.6 Select backspace 3 times to return to the main
menu.
13.2.7 Remove the USB memory stick and replace the
USB cover.
13.3 ERROR LOG
13.3.1 Enter Service Mode and select ‘ERROR LOG’ (C)
to display a listing of oven component errors. Error
details include; component description, error caused,
Date & Time of the Error with details of Failure and
Range.
13.3.2 Scroll down the list (if necessary) and select an
error from the list to display individual records.
13.3.3 Select backspace to return to the list, again to
return to the Service menu.
13.4 OVEN COUNTERS
13.4.1 Select ‘OVEN COUNTERS’ (D) to display the
oven component usage and ambient Controls
area temperature. Details include the number of
screen touches, lter cycles, door cycles, total Oven,
Magnetron and Heater element power on time and
the ambient controls area temperature in the cabinet.
13.4.2 Select backspace to return to the Service menu.
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SERVICING
E
13.5 VISUAL VIEW
13.5.1 Select VISUAL VIEW (E) to check the main oven
components. Select a component symbol to switch
on (red), select again to increase the level or turn o
(green).
13.5.2 Remove the front air intake lter, the colour
should change from green to red on the display
indicating that the magnetic reed switch circuit for the
air intake lter is operating. Replace the lter and the
colour should change back to green.
13.5.3 Open the oven door and check the colour
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 Door
Interlock Adjustment (Testing Components section)
for details), close the door and check the colour on
the display. Green indicates the door adjustment is
ok, red indicates that the Door Interlock Adjustment
procedure must be completed.
13.5.4 Select the cooling fan and check it’s operating
correctly.
13.5.5 Place a microwave safe container of water into
the oven, close the oven door and select a magnetron
to test the current draw at maximum output, this
will time-out after 30 seconds. For dual magnetron
models, test the magnetrons individually and together.
Using heat proof gloves, remove the container and
close the oven door. Individual Magnetron Test. If there
is a magnetron error present, then rst reset the error.
If during the magnetron test the Amps show between
1.1 - 2.2 Amps and the error re-occurs after 8 secs then
the failure can be found in the 230V circuit, Refer to
the schematics to nd the fault for repair (fuses, SRB,
Door switches, connections, Power supply). If during
the magnetron test 0 amp and the error re-occurs after
8 secsthen the failure can be found in the high voltage
circuit. Replace HV components (diode, Capacitor or
magnetron) to nd out the failing component never
measure in the HV circuit and disconnect the oven
from the main supply before working on the HV circuit
also the capacitor has to be discharged.
13.5.6 Select the Convection Fan and check it is
operating correctly.
13.5.7 Select the Heating Element, it increases to
maximum temperature then cycles (the Convection
Fan is on by default). Check the cavity temperature
and heater element current draw at maximum are
correct.
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1 2
14 FIRMWARE UPDATES
14.1
Note: if icons are not displayed on the screen, press in
the same positions on screen as the missing icons to
select.
14.1.1 Switch on the oven.
14.1.2 Tap the top right of the screen (1) or the same
position if it is not displayed to bypass oven preheat.
14.1.3 Enter a password (i.e. “Manager”) and select OK
(2) or the same position if the green tick symbol is not
displayed.
14.1.4 Select the USB symbol (3) or the same position
if it is not displayed.
14.1.5 Select one of the USB options (4) or the same
position if it is not displayed: ‘Firmware’ for QTS & SRB
updates and ‘Recipe’ for Icons. Install the SRB update
rst, the QTS update second and Icons third or if you
have the Autoupd.ate le present on the USB be aware
that all les of your USB will be loaded and overwrites
the existing les. Also the Menu les must be saved
before uploading les. If you have a menu le on your
USB then the menu of the oven will be over written.
If you have no menu le on your USB the oven menu
stays as is.
14.1.6 Select the rmware to install and select OK (5)
to con rm or the same position for the OK (green tick
symbol), if it is not displayed.
14.1.7 The update screen displays the le version
and product, select OK (green tick symbol) to
con rm installation (6) or the same position if it is not
displayed.
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9
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3
IMPORTANT:
Downloading from a USB will clear all existing
programs. Update the ‘SRB’ rst, the ‘QTS’ second
and the ‘Icons’ third (found under the USB ‘Recipe’
heading).
14.1.8 Switch on the oven and tap the top right of the
screen (1) to bypass the preheat stage.
14.1.9 Enter the password and select OK to display the
Settings menu, see (2).
14.1.10 Select the USB symbol (4).
14.1.11 Slide the Merrychef badge (oven front top
right) upwards and insert the USB Memory Stick into
the slot (3).
14.1.12 Once the USB has stopped ashing, select the
‘FIRMWARE’ USB symbol (5).
14.1.13 The current QTS (Touch Screen) & SRB (Smart
Relay Board) Firmware versions are displayed at the
top left of the screen (6).
SRB FIRMWARE UPDATE
14.1.14 S
elect the ‘SRB’ le required (7).
14.1.15 Check the le information is correct before
selecting OK (8).
14.1.16 Update progress is displayed (9).
14.1.17 Select backspace (10) 3x to return to the USB
screen shown (11).
14.1.18 If the rmware versions are far apart an SRB
con ict could cause an error message (12) to be
displayed.
QTS FIRMWARE UPDATE
14.1.19 S
elect the ‘QTS’ le (13) with the correct le
version number. Note; a tinted band over a le name
indicates the le is not valid for that oven.
14.1.20 Check the le information shown is correct
before selecting OK (14), if not, select ‘X’ and locate the
correct le.
14.1.21 The le update progress is displayed (15).
At 50% the cooling fan stops operating, after 100%
various screen displays appear as the software reboots.
14.1.22 Check the screen shows the correct QTS
version was installed (16), if not, repeat the process
using the correct le.
14.1.23 Remove the USB and keep in a safe place.
Reposition the USB cover.
DO NOT REMOVE USB DURING
DOWNLOAD SEQUENCE AS THIS
COULD CORRUPT THE USB DATA.
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DO NOT REMOVE USB DURING
DOWNLOAD SEQUENCE AS THIS COULD
CORRUPT THE USB DATA.
IMPORTANT:
D
ownloading from a USB will clear all existing
programs.
Only use an empty USB memory stick formatted
as follows:
A) FAT16 to update from UI QTS-XXXXXXX-V1.2.16
B) FAT16 or FAT32 to update from UI QTS-XXXXXXX-V1.2.17 or later.
Copy the following rmware les to the ROOT
directory of the USB memory stick:
QTS-eX-XXX-VX.X.XX.BIN
SRB-eX_X_X_XXX.BIN
VX-APP-eX.CBR
Autoupd.ATE
For update A) follow all instructions:
For update B) follow the rst 2 instructions:
14.1.24 With the oven switched o , slide the
Merrychef badge (oven front top right) upwards and
insert the USB Memory Stick into the slot (1).
14.1.25 Switch the oven ON (2).
14.1.26 Tap the top right of the screen (3) to bypass
the preheat stage.
14.1.27 Enter the password and select OK to display
the Settings menu, see (4).
14.1.28 Select the USB symbol (5).
14.1.29 Select the ‘FIRMWARE’ USB symbol (6).
14.1.30 Select the ‘QTS’ le (7) with the correct le
version number. Note; a tinted band over a le name
indicates the le is not valid for that oven.
14.1.31 Check the le information shown is correct
before selecting OK (8), if not, select ‘X’ and locate the
correct le.
14.1.32 The CBR le is checked and the download
progress from the USB is displayed (9) followed by the
update status and con rmation screens.
14.1.33 The QTS, SRB and Application Icon les then
download automatically showing the progress, status
and reboot con rmation screens for each le update.
14.1.34 On completion the oven start up screen (10)
is displayed showing the updated rmware versions
followed by the oven pre-heat temperature screen.
Con rming the oven update:
After an oven update the oven copies les back to
the USB memory stick.
14.1.35 Load the les from the USB memory stick to a
computer and open the update (UPDATE.txt) le.
14.1.36 An oven update is con rmed below the oven
serial number with ‘updated’ following the QTS/SRB
rmware and App Icons.
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
29
TESTING
COMPONENTS
A
B
DANGER!
THIS APPLIANCE MUST BE EARTHED.
FAILURE TO DO SO MAY RESULT IN
ELECTRIC SHOCK AND DEATH.
DANGER:
BEFORE REMOVING THE OVEN CASING, ISOLATE THE
OVEN FROM THE MAINS ELECTRICITY POWER SUPPLY;
SWITCH OFF, DISCONNECT OVEN PLUG FROM WALL
SOCKET, TURN OFF ISOLATOR SWITCH TO DISCONNECT
FIXED WIRED OVENS AND LOCKOFF.
WARNING:
ALLOW OVEN TO COOL. OBSERVE AND FOLLOW ALL
SAFETY PRECAUTIONS INCLUDING THOSE DESCRIBED
UNDER THE SAFETY REGULATIONS SECTION OF THIS
MANUAL BEFORE ATTEMPTING A SERVICE OR REPAIR.
CAUTION MICROWAVE EMISSIONS:
DO NOT BECOME EXPOSED TO EMISSIONS FROM THE
MICROWAVE GENERATOR OR PARTS CONDUCTING
MICROWAVE ENERGY.
15 OVEN TESTING
15.1 Equipment required
Portable Appliance Tester (P.A.T.).
Digital Multi-meter (D.M.M.).
Megger / similar 500V d.c. resistance meter.
Microwave detection / leakage meter.
Temperature reader.
Continuity meter.
Door Spacer Kit (Part No. SA1109).
Microwave safe 600ml glass beaker
Microwave safe 2 litre container.
15.2 Earth/Insulation Test:
15.2.1 Disconnect/isolate the oven from the power
supply.
15.2.2 Connect the mains lead from the oven to a P.A.T.
(Portable Application Tester).
15.2.3 Connect the Earth from the P.A.T. to the oven
hinge (A).
15.2.4 Place the P.A.T. in an open area, such as the oor,
away from any persons.
15.2.5 Perform a Class 1 test, a PASS indicates the oven
Earthing circuit is functioning ok.
15.2.6 If a FAIL is indicated, remove the oven casing and
check ALL earth connections before retesting.
15.2.7 NEVER operate an oven that has failed this test
as it could be potentially dangerous.
WARNING:
ALWAYS DISCHARGE THE HT CAPACITORS BEFORE
WORKING ON THE OVEN USING A SUITABLY INSULATED
10M RESISTOR.
15.3 Screen calibration:
15.3.1 Apply continuous light pressure to the screen
while switching the oven on.Continue to hold until
the progress bar has completed.
15.3.2 Using a non-abrasive pointer, such as a
ball point pen, accurately press the center of each
crosshair displayed on the screen. Once calibrated the
screen will display the oven information.
30
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
TESTING
COMPONENTS
A
C
B
15.4 OVEN TESTS
15.4.1 Enter Service mode (Servicing section).
15.4.2 Select the down arrow to display the individual
Oven tests (A) for the oven to perform.
15.5 Microwave Power Test
Measuring the power output.
Note: The power output is established under IEC
705 standard method which is only workable in
Laboratory controlled conditions. Power output is also
a ected by line voltage under load, so this test is an
approximation only.
15.5.1 Ensure the oven is cold, then enter Service
mode to bypass oven preheating.
15.5.2 Select Visual View (B) to check the oven cavity
temperature reading is as close to 0°C as possible.
1 Fill a microwave safe container (glass or plastic)
with one litr
e (1.78 pints) of tap water at about
20°C (68°F).
2 Measure and record the water temperature in
the container using a thermometer capable of
reading ±0.1 degree increments.
3 Place the container centrally inside the oven.
4 Select ‘Microwave Power Test’ (C) from the
service mode tests. (Microwave power 100% for
63 seconds, fan minimum).
5 When the countdown has nished, remove the
container from the oven, immediately stir with
a plastic implement and measure the water
temperature.
6 Calculate the temperature rise of the water (end
t
emperature minus the start temperature).
If the temperature rise is outside these limits:
Check the microwave circuit and components,
(Testing Components section). Replace
magnetron and/or HV diode board if required.
The Temperature Rise should be:
25.7°C (78.3°F) ±5%
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
31
TESTING
COMPONENTS
A
15.6 Microwave Leakage Test
Note before 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 de ection,
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 2.5cm/second.
Always hold the probe at right angles to the
oven and point of measurement, ensuring the
probe is reading 50mm from the test area.
The leakage should not exceed 5mW/cm².
Procedure
15.6.1 Add 275ml of cold water into a 600ml
microwave safe container.
15.6.2 Place the 600ml container in the centre of oven
and close the door.
15.6.3 Enter Service mode and select ‘Microwave
leakage test’ (A) from the oven tests.
15.6.4 Set the leakage meter to the appropriate scale/
range.
15.6.5 Move the survey meter probe across all
casework joins and vent areas including those marked
in yellow, shown opposite.
15.6.6 When the Magnetron circuit stops after 30
seconds, change the water and re-select the test to
continue.
15.6.7 Select the red ‘X’ on the display to stop the test
at any time.
15.6.8 Readings must be below 5mW/cm². If a level
greater than 5mW/cm² is observed, this should
be reported to the Merrychef Service Department
immediately, and the oven should not be used.
15.6.9 Notes should be kept of any leakage that is
observed in terms of the level and position on the
oven. This information should be kept with the service
documentation.
32
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P
art Number 32Z3871 US
Issue 3
TESTING
COMPONENTS
A B
C
D
E
15.7 Temperature Control Test
Measuring the oven cavity temperature.
(Note; re-calibrating the Thermocouple with the SRB
is normally only required when the Thermocouple has
been replaced or the oven is under or over cooking.)
Procedure:
15.7.1 Place the probe of a temperature reader (A)
onto a heat sink or a metal plate in the centre of the
oven cavity and close the oven door.
15.7.2 Select ‘Temperature Control Test’ (B) from the
service mode tests. The oven heats up and cycles at
the maximum set point temperature over 30 minutes.
15.7.3 Once the oven is up to maximum temperature
check for a stable temperature reading.
15.7.4 Select the red X to nish the test, if necessary.
15.7.5 If the temperature reading is di erent to the
maximum set point, scroll up (C) to select TEMP.
COMP. (Temperature Compensation) (D) and enter the
password.
15.7.6 Enter the gure from the temperature reader
on the keypad (E) and select OK to calibrate the SRB to
the thermocouple.
15.7.7 Retest to check that the oven cavity
temperature reading is the same as the oven
maximum set point temperature.
If the temperature reading is unstable:
1 Disconnect and isolate the oven from the
elec
tricity supply.
2 Allow the oven to cool down.
3 Remove the oven casing.
4 Check the cavity temperature sensor wire and
c
onnections.
5 If the wire and connections are ok; replace
the cavity temperature sensor (see Spares &
Replacement section).
6 Replace oven casing, switch ON and retest.
7 If the temperature is still unstable repeat steps 1
to 3, replace the SRB (see Spares & Replacement
section), repeat step 6. NOTE: reuse the existing
PM (Personality Module) on the new SRB (enter
Serial No. on reboot).
15.7.8 Repeat the Temperature Control Test
procedure.
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
33
TESTING
COMPONENTS
A
A
15.8 Soak Test
Checking the oven cavity integrity.
Procedure:
15.8.1 Place an oven/microwave safe container with
approx. 2 litres of water into the oven.
15.8.2 Close the oven door and select ‘Soak Test’ (A)
from the Service mode oven tests (maximum oven
temperature, 50% microwave power, maximum fan
speed).
15.8.3 Run the test (30 minutes), carefully checking the
oven casing, joints and door seal for signs of steam or
water escaping from the oven cavity.
15.8.4 If necessary, rectify any leaks and repeat the test.
15.8.5 Safely remove the container from the oven.
15.9 Recommission Test
The Recommission tests are performed following
the completion of a service or repair to ensure
the oven is operational before handing back to
the customer.
Some of the tests have a countdown timer where
failing to carry out a test within the time limit will
cause a test failure and the Recommission test will
have to be restarted.
Procedure:
15.9.1 Select ‘Recommission Test’ (A) from the service
mode oven tests and follow the on screen instructions
to perform the tests. Do not select the red ‘X’unless
you want to stop the test.
15.9.2 After a test has successfully passed, select OK to
continue.
15.9.3 When all the tests have been successfully
performed the display shows the Recommission test
has passed, select OK to con rm.
15.9.4 In the event of a Recommission test failure,
the detail will be recorded in the Error log. Any error
should be recti ed and the Recommission test run
again.
34
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
TESTING
COMPONENTS
1
2
3
16 HIGH VOLTAGE COMPONENTS
16.1 High Voltage Transformer Test
16.1.1 Disconnect and isolate the oven from the
electricity supply.
16.1.2 Allow the oven to cool down.
16.1.3 Remove the oven casing.
16.1.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
16.1.5 Remove all connections from the Power
Transformer.
16.1.6 Using a D.M.M., check the resistance of the
windings. Results should be as follows:
1 Mains winding between tags, approx. 1.1 Ω
2 High Voltage winding, approx. 60 Ω
3 Filament winding between terminals, less than
1 Ω
16.1.7 Using a Megger, test the insulation resistance
between:
Primary winding and chassis, pass if reading is
over 10 MΩ
Filament winding and chassis, pass if reading is
over 10 MΩ
One end of the High Voltage winding is connected
to the chassis, so this is not tested.
High voltages and large currents are present at
the High Voltage Capacitor. It is very dangerous
to work near this part when the oven is on.
NEVER make any voltage measurements at the
High Voltage circuits, including the magnetron
lament.
DANGER:
BEFORE REMOVING THE OVEN CASING, ISOLATE THE
OVEN FROM THE MAINS ELECTRICITY POWER SUPPLY;
SWITCH OFF, DISCONNECT OVEN PLUG FROM WALL
SOCKET, TURN OFF ISOLATOR SWITCH TO DISCONNECT
FIXED WIRED OVENS AND LOCKOFF.
WARNING:
ALLOW OVEN TO COOL. OBSERVE AND FOLLOW ALL
SAFETY PRECAUTIONS INCLUDING THOSE DESCRIBED
UNDER THE SAFETY REGULATIONS SECTION OF THIS
MANUAL BEFORE ATTEMPTING A SERVICE OR REPAIR.
CAUTION MICROWAVE EMISSIONS:
DO NOT BECOME EXPOSED TO EMISSIONS FROM THE
MICROWAVE GENERATOR OR PARTS CONDUCTING
MICROWAVE ENERGY.
WARNING:
ALWAYS DISCHARGE THE HT CAPACITORS BEFORE
WORKING ON THE OVEN USING A SUITABLY INSULATED
10M RESISTOR.
16.2 High Voltage Recti er Test (Diode)
16.2.1
Disconnect and isolate the oven from the
electricity supply.
16.2.2 Allow the oven to cool down.
16.2.3 Remove the oven casing.
16.2.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
16.2.5 Remove all connections from the High Voltage
Recti er.
16.2.6 Using a Megger, test for continuity in both
directions. Results should be as follows:
Open circuit both ways - FAIL
Conducts one-way only - PASS
Short circuit both ways - FAIL
Conducts one way, leaks the other - FAIL
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
35
TESTING
COMPONENTS
1
1
2
2
High voltages and large currents are present at
t
he High Voltage Capacitor. It is very dangerous
to work near this part when the oven is on.
NEVER make any voltage measurements at the
High Voltage circuits, including the magnetron
lament.
16.3 High Voltage Capacitor Test
16.3.1 Disconnect and isolate the oven from the
electricity supply.
16.3.2 Allow the oven to cool down.
16.3.3 Remove the oven casing.
16.3.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
16.3.5 Remove all connections from the High Voltage
Capacitor.
16.3.6 Using a D.M.M., check for continuity between
the terminals. Results should be as follows:
1 Between Terminals, pass if approx. 10 MΩ
2 Between Terminals and case, pass if open circuit.
16.3.7
Using a Megger, test the insulation resistance
between the Terminals and case, pass if reading is over
100 MΩ.
16.4 High Voltage Magnetron Test
16.4.1 Disconnect and isolate the oven from the
electricity supply.
16.4.2 Allow the oven to cool down.
16.4.3 Remove the oven casing.
16.4.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
16.4.5 Remove all connections from the High Voltage
Magnetron.
16.4.6 Using a Megger check for continuity. Results
should be as follows:
1 Filament terminals, pass if 1 Ω or less.
2 Between each lament terminal and the metal
out
er case should read open.
36
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
SW1
SW2
SW3
SW3
L1
N
SW1
SW2
L1
N
TESTING
COMPONENTS
6
5
3
2
1
SW1
SW2
SW3
17 MAINS VOLTAGE COMPONENTS
17.1 Door Interlock Adjustment
Located on the door hinges are 3 safety interlock
microswitches, to prevent microwave emissions
escaping when the oven door is opened:
The Primary (SW3) breaks the electrical supply
circuit to the transformers.
The Secondary (SW2) breaks the microwave circuit if
the primary fails.
The Monitor switch (SW1) will short out the
Microwave circuit blowing the fuse if both Primary
and Secondary interlocks fail.
IMPORTANT: in the event that the Monitor
switch causes the Microwave circuit fuse to
blow, the Secondary (SW2) and Monitor (SW1)
microswitches must be replaced due to exposure
from high short-circuit currents.
The purpose of the following adjustment procedure
is to set the interlock to switch o the Microwave
circuit when the door is opened more than 4mm
and for the Microwave circuit to operate when the
door is closed and the door seal expands.
17.1.1 Door Interlock Adjustment procedure:
17.1.2 Disconnect and isolate the oven from the
electricity supply.
17.1.3 Allow the oven to cool down.
17.1.4 Remove the oven casing.
17.1.5 Ensure that the High Voltage Capacitor is
discharged before commencing work.
17.1.6 Door Spacer Kit SA1109
1 Position Green 2mm spacers over the top
c
orners of the door seal and carefully close the
door ensuring the spacer is still in position.
2 Slacken the pivot screw.
3 Release the adjusting screws and move the
back
plate until microswitch SW3 just activates
then secure all screws.
4 Open door to replace the Green 2mm spacers
with Red 4mm spacers and close the door.
5 Slacken the pivot screw.
6 Release the adjusting screws and move the
backplate until microswitch SW2 just activates
then secure all screws.
7 Remove the spacers, then open and close the
oven door 5-10 times.
IMPORTANT: CHECK THE SWITCHES OPERATE IN
THE FOLLOWING SEQUENCE AS MICROSWITCH SW3
MUST SWITCH THE LOAD CURRENT.
Closing the door:
SW1 opens rst
SW2 closes second
SW3 closes third
Opening the door:
SW3 opens rst
SW2 opens second
SW1 closes third
OVEN DOOR OPEN
OVEN DOOR CLOSED
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
37
TESTING
COMPONENTS
A
1
2
3
32
U
L1
DC
1
2
3
4
5
6
7
8
9
10
V
L2/N
W
L3
PE
64
67
66
68
65
17.2 Convection Fan Motor & Controller
17.2.1 Convection Fan Motor.
The convection motor Is a 3-phase AC motor having
a maximum speed of 7200 rpm controlled by a
motor speed controller.
The windings are thermally protected and in the
event of a thermal fault a trip inside the motor will
operate and shut down the motor speed controller.
17.2.2 Motor Controller
Provides a 3-phase AC switched mode drive to the
convection motor and is controlled by a 0 - 10 Volt
signal from the SRB. This allows the motor to be
adjusted from approximately 1500 rpm to 7000 rpm
in steps of 5%.
Door Open, 1500 RPM (20% @ 2V)
Door Closed (not cooking), 2190 RPM (31% @
3.1V)
Door Closed (cooking), speed as speci ed by
program or setting up to a Maximum of 7000
RPM, 100% @ 10V)
17.2.3 LED Status display (A):
Inverter O /No supply, LED OFF.
Power On/Ready, LED ashes ON/OFF x1 per
second.
Inverter Running, LED ON continuously.
General Warning, LED ON/OFF x2 per second.
Fault Condition, LED ON/OFF x10 per second.
Convection Fan Motor & Controller tests:
17.2.4 Disconnect and isolate the oven from the
electricity supply.
17.2.5 Allow the oven to cool down.
17.2.6 Remove the oven casing.
17.2.7 Ensure that the High Voltage Capacitor is
discharged before commencing work.
17.2.8 Check the following:
1 Electrical supply into motor controller.
2 Three phase connections to motor.
3 Speed Controller connections to SRB.
4 Motor thermal cut-out (short circuit).
5 Motor rotates freely/not seized.
6 Motor winding resistances:
Blue-Black 3 - 4 Ohms.
Black-Brown 3 - 4 Ohms.
Brown-Blue 3 - 4 Ohms.
Black or Brown or Blue to Earth (Open circuit).
38
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
SPARES &
REPLACEMENT
DANGER:
BEFORE REMOVING THE OVEN CASING,
ISOLATE THE OVEN FROM THE MAINS
ELECTRICITY POWER SUPPLY; SWITCH
OFF, DISCONNECT OVEN PLUG FROM
WALL SOCKET, TURN OFF ISOLATOR
SWITCH TO DISCONNECT FIXED WIRED
OVENS AND LOCKOFF.
WARNING:
ALLOW OVEN TO COOL. OBSERVE AND
FOLLOW ALL SAFETY PRECAUTIONS
INCLUDING THOSE DESCRIBED UNDER
THE SAFETY REGULATIONS SECTION OF
THIS MANUAL BEFORE ATTEMPTING A
SERVICE OR REPAIR.
CAUTION MICROWAVE
EMISSIONS:
DO NOT BECOME EXPOSED TO
EMISSIONS FROM THE MICROWAVE
GENERATOR OR PARTS CONDUCTING
MICROWAVE ENERGY.
18 OVEN COMPONENTS
63 Door oven
80 Microswitch SW1, SW2
69 Stirrer motor assembly
77 Wave guide
41 Overheat stat oven cavity
78 Air intake lter (front)
79 Hinge assembly door RH
16 SRB Smart Relay Board with in-built 1.25A fuse
(Located in front of 24V transformer)
10 RFI Filter
84 HV capacitor
77 Wave guide
57 Temperature sensor (Thermocouple) oven cavity
69 Stirrer motor assembly
82 Microswitch SW3
83 Controller convection fan motor
81 Hinge assembly door LH
7 Fuse (20A) (F1 & F2)
5 Fuse Control circuit (12A) (F3)
8 Fuse LH Transformer (12A) (F4)
9 Fuse RH Transformer (12A) (F5)
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
39
SPARES &
REPLACEMENT
51 Magnetron cooling duct RH
11 Magnetron
33 Heater element x2 (connectors shown)
65 Motor assembly convection fan
24 Gland Power supply cable
52 Magnetron cooling duct LH
62 HT Diode
85 Transformer
69 Cooling fan motor
9 Capacitor 1.5µF (Silver) motor start
13 Overheat stat Magnetron
17 QTS Touch Screen PCB
6 Switch oven ON/OFF (rear connection)
21 Multi Voltage Relay
40 Speaker unit
27 Ethernet port
40
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
SPARES &
REPLACEMENT
21
3
4
19 SRB & QTS Circuit Boards
19.1 SRB replacement
19.1.1 Disconnect and isolate the oven from the
electricity supply.
19.1.2 Allow the oven to cool down.
19.1.3 Remove the oven casing.
19.1.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
19.1.5 Taking anti-static precautions, disconnect all
connections on the SRB.
19.1.6 Remove the PM (Personality Module) from the
SRB and place safely aside.
19.1.7 Release retaining screws and remove the SRB.
19.1.8 Replace SRB and secure retaining screws.
19.1.9 Reconnect all connections to the SRB, for
details see ‘SRB Terminal Locations’ (Electrical Circuits
section).
1 Ensure the thermocouple negative (-)
c
onnection (white) and positive (+) connection
(green) are tted the correct way round or the
oven temperature readings will be wrong.
2 Re t the PM removed from the old SRB to the
new SRB
. Refer to the following PM replacement
if a new PM is tted.
19.2 QTS replacement
19.2.1 Disconnect and isolate the oven from the
electricity supply.
19.2.2 Allow the oven to cool down.
19.2.3 Remove the oven casing.
19.2.4 Ensure that the High Voltage Capacitor is
discharged before commencing work.
19.2.5 Remove the top front panel.
19.2.6 Taking anti-static precautions, disconnect all
connections on the QTS.
19.2.7 Remove the PM (Personality Module) (3) from
the QTS and place safely aside.
19.2.8 Release the four retaining nuts and remove the
QTS assembly (4).
19.2.9 Re t the PM removed from the old QTS to the
new QTS. Refer to the following PM replacement if a
new PM is tted.
19.2.10 Replace the QTS assembly and secure with the
retaining nuts.
19.2.11 Reconnect all connections to the QTS, for
details see ‘QTS Terminal Locations’ (Electrical Circuits
section).
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
41
SPARES &
REPLACEMENT
6 7
8
9
10
5
3
2
4
1
19.3 PM (Personality Module)
replacement
The PM on the SRB contains the Firmware.
The PM on the QTS contains the Firmware,
Oven Serial Number, Temperature
Calibration, Cooking Programs, Application
Icons and the Recipe Images.
19.3.1 With a new PM tted and casing re tted, switch
on the oven and tap the screen to hold and check the
QTS and SRB versions (1) are the latest release, if not,
execute a Firmware update using the latest versions.
For details see ‘Firmware Updates’ (Servicing section).
19.3.2 Tap the top right of the screen to bypass the
preheat stage (2).
19.3.3 Enter the service password and select OK to
display the Settings menu, see (3).
19.3.4 Select the USB symbol (4).
19.3.5 Slide the Merrychef badge upwards and insert
the USB Memory Stick into the slot (5).
19.3.6 Once the USB has stopped ashing, select the
required USB recipe symbol (6).
19.3.7 Select the Application Icons le to download
(7). Note; a tinted band over a le name indicates the
le is not valid for that oven.
19.3.8 Check the le information shown is correct
before selecting OK (8), if not, select ‘X’ and locate the
correct le.
19.3.9 When completed, select recipes to load the
cooking programs (9). Once the programs are loaded
the oven restarts.
19.3.10 Enter the Date & Time settings (10). For details
see under ‘Oven Control Settings’ (Product Information
section).
19.3.11 Enter the oven serial number (Found on the
oven Rating Plate at the rear of the oven)
19.3.12 Turn the oven switch OFF/ON.
19.3.13 Remove the USB and keep in a safe place.
Reposition the USB cover.
42
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P
art Number 32Z3871 US
Issue 3
SPARES &
REPLACEMENT
20 SPARE PARTS EXPLODED VIEW
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
43
Recommended Parts List
Part
Number
Description
Qty
Per
Oven
Unit
1-10
Ovens
11-50
Ovens
51-100
Ovens
1st
Aid/To
Go Box
Service
Centre
Kit
e4s
Unique
Parts
over e4
105005 M3 CAGE NUT 10 EA 10 30 60
30Z0503 SWITCH ON/OFF ROCKER DPST 1 EA 1 2 4 1 1
30Z1177 20 AMP LITTLEFUSE FLM020 2 EA 2 6 12 2 4
30Z1178 30A FUSE HOLDER 2 EA 2 6 12 1 2
30Z1427 MAGNETRON OVERHEAT STAT 2 EA 2 6 12 1 1
30Z1430 MICROSWITCH (LARGE) 1 EA 2 6 12 1 1
30Z1459 MICROSWITCH 2 EA 1 3 6 1 4
30Z1521 e4s MOTOR SPEED CONTROLLER 1 EA 0 1 2 1 1
30Z5009
eikon TOUCH SCREEN & PCB
1 EA 1 3 6 1
30Z5011
CONTROL PCB
e4s SRB
1 EA 1 3 6 1 1
30Z5013 HT DIODE 750mA 2 EA 2 6 12 2 2 2
31Z0115 INSULATOR PAD 2 EA 2 6 12
31Z0186 SILASTIC BLACK (DOOR SEAL) TUBE 1 3 6 1 1
31Z0600 USB ADAPTOR MODULE 1 EA 1 3 6 1
31Z0620 BTS UI SRB CABLE (WHITE) 1 EA 1 3 6 1 1
31Z1252 BOLT M4 X 10 HEX HD FLANGE SS 8 EA 8 24 48 8
31Z1255 PG21 CABLE GLAND BLACK 1 EA 1 3 6
31Z1256 PG21 CABLE GLAND NUT 1 EA 1 3 6
31Z1259 SHEET COVER CAP 12MM DIA 4 EA 4 12 24
32Z4028 HALF SIZE GASTRONOM DISH 1 EA 1 3 6
32Z7075
PERSONALITY MODULE
SRB e4s
1 EA 1 3 6 1 1
32Z7076
PERSONALITY MODULE
QTS e4s
1 EA 1 3 6 1 1
6004011 RUBBER FOOT 0 40 X 25 1 EA 1 3 6
DR0006 REED SWITCH 1 EA 1 3 6 1 1
DR0007 MERRYCHEF BADGE 1 EA 1 3 6
DR0008 MERRYCHEF BADGE SLIDER 1 EA 1 3 6
DR0009 MERRYCHEF BADGE GUIDE 2 EA 2 6 12
DR0011 TOUCHSCREEN OVERLAY 1 EA 1 3 6 1
DR0021 HARMONISED SPEAKER 1 EA 1 3 6 1
DR0030 HANDLE SPACER 2 EA 2 6 12
DR0047 MERRYCHEF BADGE SEAL 1 EA 1 3 6
DR0060 STIRRER COVER - CERAMIC 2 EA 2 6 12 2 2
DR0079 OVEN TEMP STAT 1 EA 1 3 6 1 1
DV0168VIT DOOR CHOKE PRESSED VITREOUS 1 EA 1 3 6
DV0187 TOP PANEL (PRESSED) 1 EA 0 1 2
DV0202 CERAMIC PLATE RETAINER 4 EA 0 1 2 4
DV0370 LOWER IMPINGER HANDLE 1 EA 1 3 6 1
DV0403 CAST REAR DUCTING LH 1 EA 1 3 6
DV0431 DOOR HANDLE 1 EA 1 3 6
DV0437 LOWER FASCIA FINISHED 1 EA 1 3 6
DV0452 CAPACITOR CLIP 2 EA 0 1 2
DV0692 SEAL - CERAMIC COVER 2 EA 2 6 12 2 2
DV0714 e4s WIRE RACK 1 EA 0 1 2 1
DV0773 CAVITY HOT BOX FINISHED 1 EA 1 3 6 1
DV0815 e4s CAVITY THERMOCOUPLE 1 EA 1 3 6 1 1 1
DV0825 e4s CAST RH DUCT MODIFIED 1 EA 1 3 6 1
DV0838 CONTROL PANEL e4/e4s 1 EA 0 1 2
DV0840 e4s RH SIDE PANEL 1 EA 0 1 2 1
DV0841 e4s LH SIDE PANEL 1 EA 0 1 2 1
P30Z1415 MAGNETRON 2M303H 2 EA 0 1 2 1 2
PSA1215 e4s DOOR ASSEMBLY (COMPLETE) 1 EA 1 3 6 1
PSA1240 e4s UPPER IMPINGER PLATE 1 EA 0 1 2 1
PSA1241 e4s HOT AIR MOTOR ASSY KIT 1 EA 1 3 6 1 1
Merrychef eikon e4s Oven
Recommended Minimum Stock Holding & Service Kits
SPARES &
REPLACEMENT
21 SPARE PARTS
Parts list & recommended minimum stock holding & Service Kits
44
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
Recommended Parts List
Part
Number
Description
Qty
Per
Oven
Unit
1-10
Ovens
11-50
Ovens
51-100
Ovens
1st
Aid/To
Go Box
Service
Centre
Kit
e4s
Unique
Parts
over e4
PSA1242 e4s HEATER ASSEMBLY KIT 1 EA 1 3 6 1 1
PSA1243 e4s GASKET KIT 1 EA 1 3 6 1 1
PSA2144 DOOR SKIN ASSY e4 1 EA 0 1 2
PSA2191 e4s IMPINGER PLATE LOWER 1 EA 1 3 6 1
PSA2195 e4s COOLING FAN ASSEMBLY 1 EA 0 1 2 1 1
PSA2197 e4s DOOR+CHOKE ASSY 1 EA 0 1 2 1
PSA2201 e4s WAVEGUIDE ASSY 2 EA 1 3 6 2
PSA288 STIRRER MOTOR ASSY (PINNED) 2 EA 0 1 2 2
PSA291 STIRRER ASSY (PINNED) 2 EA 0 1 2 2
PSA3113 DOOR SEAL 1 EA 1 3 6 1 1
PSR e4s EIKON DOOR HINGE KIT EA 1 3 6 1
PSR102 EIKON M/SWITCH BRACKET KIT EA 1 3 6 1
SA3114 e4s CAVITY ASSY 1 EA 0 1 2
SA3127 AIR FILTER ASSY e4 1 EA 1 3 6 1 1
SA3132 e4s CAVITY INNER STEAM PIPE 1 EA 1 3 6 1
SA3134 REAR PANEL WELDED ASSY e4s 1 EA 1 3 6 1
SA3136 CAVITY WRAP KIT 1 EA 0 1 2 1
SA3150 e4s LOWER CAT ASSY 1 EA 0 1 2 1
SA3151 e4s UPPER CAT ASSY 1 EA 0 1 2 1
SA3153 e4s AIR DIFFUSER ASSY 1 EA 1 3 6 1 1 1
eikon e4s 230Volts 50Hz - UK/EU - Single Phase - Unique Parts
30Z0231 FUSEHOLDER 1in (13A) 3 EA 3 9 18 3 6
30Z0456 FUSE 1in 13A HRC 3 EA 3 9 18 3 6
30Z1425 TRANSFORMER 240V 50/60Hz 1 EA 1 3 6 1 2
30Z1431 1.2uF 2500V CAPACITOR 2 EA 2 6 12 2 2 2
30Z1488 e4s MAINS FILTER 1 EA 1 3 6 1 2 1
P30Z1413 230V 50Hz TRANSFORMER 2 EA 2 6 12 2
POWER SUPPLY LEAD (UK) 3C 1 EA 1 3 6
eikon e4s 230Volts 50Hz - UK/EU - Twin Phase - Unique Parts
30Z0231 FUSEHOLDER 1in (13A) 3 EA 3 9 18 3 6
30Z0456 FUSE 1in 13A HRC 3 EA 3 9 18 3 6
30Z1425 TRANSFORMER 240V 50/60Hz 1 EA 1 3 6 1 2
30Z1431 1.2uF 2500V CAPACITOR 2 EA 2 6 12 2 2 2
30Z1488 e4s MAINS FILTER 1 EA 1 3 6 1 2 1
P30Z1413 230V 50Hz TRANSFORMER 2 EA 2 6 12 2
SA2209 e4s 2P PLUG - 1P LEAD HC 1 EA 1 3 6
30Z0231 FUSEHOLDER 1in (13A) 3 EA 3 9 18 3 6
30Z0456 FUSE 1in 13A HRC 3 EA 3 9 18 3 6
30Z1425 TRANSFORMER 240V 50/60Hz 1 EA 1 3 6 1 2
30Z1431 1.2uF 2500V CAPACITOR 2 EA 2 6 12 2 2
30Z1534 e4s MAINS FILTER 20A 2 EA 2 6 12 1 2 1
P30Z1413 230V 50Hz TRANSFORMER 2 EA 2 6 12 2
SR233 e4s MAINS CABLE AZ 5P 1 EA 1 3 6
Merrychef eikon e4s Oven
Recommended Minimum Stock Holding & Service Kits
eikon e4s 230Volts 50Hz - AZ - Unique Parts
SPARES &
REPLACEMENT
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
45
Recommended Parts List
Part
Number
Description
Qty
Per
Oven
Unit
1-10
Ovens
11-50
Ovens
51-100
Ovens
1st
Aid/To
Go Box
Service
Centre
Kit
e4s
Unique
Parts
over e4
30Z0231 FUSEHOLDER 1in (13A) 3 EA 3 9 18 3 6
30Z0456 FUSE 1in 13A HRC 3 EA 3 9 18 3 6
30Z1425 TRANSFORMER 240V 50/60Hz 1 EA 1 3 6 1 2
30Z1331 1.00uF 2500V CAPACITOR 2 EA 2 6 12 2 2
30Z1488 e4s MAINS FILTER 1 EA 1 3 6 1 2 1
P30Z1230 60HZ TRANS MULTI TAP 2 EA 2 6 12 2
POWER SUPPLY LEAD HE (EU) 1 EA 1 3 6
30Z0285 FUSEHOLDER 1 1/4in (13A) 3 EA 3 9 18 3 6
30Z1331 1.00uF 2500V CAPACITOR 2 EA 2 6 12 2 2
30Z1439 OMRON RELAY 12V 2 EA 2 6 12 1 2
30Z1455 TRANSFORMER LV CLASS 2 1 EA 1 3 6 1 2
30Z1488 e4s MAINS FILTER 1 EA 1 3 6 1 2 1
30Z1507 e4s USA 12A FUSE SLOW/B 3 EA 3 9 18 3 6 3
PLUG & LEAD ASSY (SUBWAY) 1 EA 1 3 6
P30Z1230 60HZ TRANS MULTI TAP 2 EA 2 6 12 2
Merrychef eikon e4s Oven
Recommended Minimum Stock Holding & Service Kits
eikon e4s 220Volts 60Hz - SA - Unique Parts
eikon e4s 208V & 240V 60Hz - USA - Unique Parts
FAULT FINDING
46
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
FAULT FINDING
22 ERROR CODES DISPLAYED
Error
Code
Error Condition Description Trigger Possible Causes
Error
Level
System
Response
E 101
Magnetron failed
to energise
Detects a magnetron
is not working
correctly
The current
measured by the
current sensing
transformer
was outside of
tolerance.
Failure of
component/s in
the microwave
circuit
Critical
Display error
message until
system is
power cycled.
E 102
Heater incorrect
current
Detects a heating
element is not
working correctly
The current
measured by
the sensing
transformer on
the SRB was <1A
when heating
cycled on or >1A
when heating
cycled o .
If some current
>1A, one or more
heater elements
could have
failed. If current
measured <1A
possible wiring
fault stopping
power reaching
element.
Critical
Display error
message until
system is
power cycled.
E 103
Ambient overheat
>70°C
Detects if the controls
area is operating
above temperature
The ambient
temperature
measured on the
QTS and SRB was
>70°C
Cooling fan failed.
Cooling fan
wired incorrectly.
Inlet air too hot.
Blocked inlet
lter.
Critical
Display error
message
until ambient
controls area
temperature is
below 60°C
E 104
Magnetron /
Cavity Overheat
Detects if the cavity
and magnetrons are
above temperature
Cavity and
magnetron
overheat
thermostats
Cooling fan failed.
E103 / E106 not
triggering. Failed
SRB. Magnetron
failure. Wiring /
connection fault.
Blocked Inlet
lter.
Critical
Display error
message until
service call and
the magnetron
cools down or
the cavity stat
is reset.
E 105
Supply Frequency
high / low
Detects if the power
supply Frequency is
outside speci cation
The power
supply to the
oven Frequency
sensor on the
SRB measures
too high / low
Incorrect
mains voltage.
Poor internal /
external wiring
connections.
Faulty SRB.
Critical
Display error
message until
system power
cycled.
E 106
Cavity reaches
25°C above
setpoint once
it has been
controlling at
setpoint
Detects if the cavity
temperature has risen
above limits
The setpoint of
the oven was
exceeded
Cavity re. Failed
convection fan.
No impeller or
loose impeller on
convection fan.
Critical
Display error
message until
system is
power cycled.
E 107
Communication
error
No communication
can be made
between the QTS and
SRB
Loss of
communication
between the SBR
and QTS
SRB / QTS
connection cable
unplugged or
damaged. Faulty
QTS or SRB.
Critical
Display error
message until
system is
power cycled.
E 108 QTS PM error
Wrong PM found / no
PM found
The QTS or SRB
either has an
incorrect PM
(Personality
Module) tted or
no PM is tted
The PM has been
changed and is
incorrect. The
PM has been
removed.
Critical
Display error
message until
system is
power cycled.
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
47
FAULT FINDING
Error
Code
Error Condition Description Trigger Possible Causes
Error
Level
System
Response
E 110
SRB version
con ict
SRB rmware version
incompatible with
QTS version
The QTS has
found that
the rmware
running the SRB
is not supported.
Firmware update
has been carried
out to the QTS
and the SRB has
not been updated
to match.
Critical
Display error
message until
system is
power cycled.
E 111
Cavity sensor
error
Cavity sensor broken
/ unplugged
The controller is
reading an open
circuit across the
thermocouple
input
The
thermocouple
is not
connected. The
thermocouple
is broken open
circuit. Failed SRB.
Critical
Display error
message until
system is
power cycled.
E112 SRB Sensor Fail
SRB Ambient
temperature sensor
failure
Shorted SRB
Temperature
sensor
Shorted Ambient
temp sensor on
the SRB
Critical
Display error
message until
service call and
the magnetron
cools down or
the cavity stat
E 113
Magnetron Fail On
without request
Magnetron operates
without being
requested to do so.
Magnetron
current sensed
at >1 Amp
Triac, Diode
or relay short
circuited on SRB
Critical
Display error
message until
service call and
the magnetron
cools down or
the cavity stat
is reset.
E114
Free – Currently
not used
E116
Heater o on
request
No heater current
detected when
requested
Cavity does not
reach 100°C in
30mins
Oven heater
element failure
Critical
Display error
message until
service call and
the magnetron
cools down or
the cavity stat
is reset.
E117
Magnetron
Overheat stat
Mag overheat stat
has been triggered as
a result of excessive
temperature
Magnetron stat
is open circuit
when running
microwave
Blocked air
lters/High
environmental
temperatures/
Positioning next
to heat sources or
failed magnetron
Critical
Display error
message until
service call and
the magnetron
cools down or
the cavity stat
is reset.
N/A
Oven door open
longer than 1 min.
Oven door open.
Oven inoperable.
Break in
switched feed
on SRB
Door left open.
Failed door
switch/s or SRB.
Faulty wiring or
connection.
Warning
Display
warning
message until
door is closed.
N/A Air Filter removed
Air lter not tted.
Oven inoperable.
Filter not tted.
Failed reed
switch/s or SRB.
Faulty wiring or
connection.
Warning
Display error
message until
lter replaced.
48
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
ELECTRICAL
CIRCUITS
1
2
78
3
4 5 6
23 SRB & QTS Circuit Boards
23.1 QTS LEDs
Run - Pulsing 1 second ash, indicating that the
board has booted up.
Power - Lit to show that there is a power supply
from the SRB.
P-Bus - Irregular ashing, indicating data
communication with SRB.
C-Bus - Lit to show data being loaded from the
PM onto the QTS.
LD5 - Lit to show that a USB key is tted.
1 LD5
2 Power, Run, P-Bus, C-Bus.
23.2
QTS Terminal Locations
3 X6 - Speaker
4 X5 - USB socket
5 X4 - Communications to SRB
6 X11 - Screen backlight
7 X13 - Touch pad
8 X9 - Display Screen PCB
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
49
ELECTRICAL
CIRCUITS
8
1
2
3
4
5
6
12
11
7
9
10
23.3 SRB LED’s
P-Bus - Irregular ashing, indicating data
communication with QTS.
Run - Pulsing 1 second ash, indicating that the
board has booted up.
12v & 5v - Lit to show voltage outputs from
inboard transformer.
Relay & Triac - Lit to show that a signal has been
sent to energise that component.
1 Cooling fan.
2 Convection fan.
3 Stirrer.
4 5v supply.
5 12v supply.
6 Heater safety.
7 Heater drive.
8 P-BUS: ashes when data is being sent /
r
eceived. RUN: 1 second ash.
9 Oven Door.
10 Microwave safety relay.
11 Microwave 2 drive.
12 Microwave 1 drive.
13 LED (Lit to show that signal is recieved via
overheat trips). if lit it is ok.
50
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
ELECTRICAL
CIRCUITS
14
15
16
17
18
19
20
21
22
23
24
25
26
12
11
10
9
8
7
6
5
4
3
2
1
13
23.4 SRB Terminal Locations:
1 X3 - Output for e4s Convection Fan Speed
Controller.
2 X101 - Voltage Selection Relay coil feeds.(US
Only)
3 X18b - Air intake Filter Reed Switch.
4 X18e - Right Magnetron Overheat Thermostat.
5 X18d - Left Magnetron Overheat Thermostat.
6 X18c - Cavity Overheat Thermostat.
7 X18a - On/O Switch.
8 X14 - Cavity Temperature Thermocouple.
9 X5 - Fan RPM Input.
10 X13 - P Bus, Ethernet Port.
11 X12 - C Bus, Development PC Port.
12 X11 - P/C Bus, BTS Cable.
13 X1 - 24V supply from Low Voltage Transformer.
14 X8 - Cooling Fan.
15 X17 - Not used.
16 X20 - Microwave Stirrers.
17 X9 - Mains Output, Convection Fan Controller.
18 X103.1 - Mains Output to Low Voltage
T
ransformer.
19 X103 - Mains Input, Live & Neutral.
20 X2.1 - Mains Input, Live for Heaters.
21 X2.2 - Mains Output, Live to Heaters.
22 X102a - Mains Input, Neutral for Magnetron
Transformers & Monitor Door Switch.
23 X102b - Mains Output, Neutral to Magnetron
Transformers & Monitor Door Switch.
24 X4a - Door Switch signal from Secondary Door
S
witch (Live for Magnetron Transformers).
25 X10 - Connector Block for door switches.
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
51
3rd ANGLE PROJECTION
$
(
'
)
&
%
1 2
3
4
1 2
3
4
SW3
23
24
C
N/C
Secondary Micro Switch
Note
Switches Shown in
Door Closed Position
L
N
3
6
8
9
10
U V W
PE
64
65
67
66
68
82
Convection Fan
Motor Speed Controller
Black
Brown
Blue
Green
Green
Red
Blue
Triac 1A Output
Triac 2A Output
Triac 1A Output
Voltage Selection
Relays Driver
Current Sense Hybrid Relay 1
Triac 16A Output
Safety Relay Aux
Line Voltage Monitoring
Convection Fan
0...10V Passive
Isolated Output
Safety Relay Heater
Safety Relay M.W.
Door Switch
Common Connectors Block
Interlock Switches
Power Switch Feedback
Air Filter Feedback
MCU
Power Supply
12V;5V:3.3V
12V 5V
Thermocouple
Motor Feedback
C/B Bus
C-Bus
P-Bus
2
1
2
1
2
1
1
2
3
1
2
3
1
2
1
2
1
2
1
2
1
2
1
2
1
2
3
2
1
2
1
1
2
3
4
1
2
3
4
1
2
3
1
2
Triac Output Sch
Triac Output Sch
Triac Output Sch
Safety Relay Sch
Line Voltage Monitoring Sch
0—10V-out Sch
Safety Relay Sch
Lcs Heater
Hybrid Relay Sch
Triac Output Sch
Safety Relay Sch
Lcs MW
Door Switch Detection Sch
Current Sence Sch
Lcs MW
Voltage Selection Relay Driver Sch
Thermocouple Input Sch
Power Supply Sch
Feedback Sch
MCU Sch
Safety Relay Sch
Feedback Sch
C-P Bus Sch
C-P Bus Sch
C-P Bus Sch
+12V
X102(N)
N
X2.1
X4a
Ext GND
X3.1
X3.2
N
N
N
N
N
N
L
L
L
X103
Aux
Power
X103.1
X102a
X4a
X2.1
X3
X9
X18b
X18a
X1
X10
X18c
X18d
X18e
SRB Transformer
M.W. Supply
Motor Speed Controller
Heater Supply
Neutral In
Interlock
Switch
Connections
24VAC
Supply
Overheat Cavity
Air Filter
On/Off
Overheat MW1
X8
Cooling Fan
X17
X20
Stirrer Motor 1
X2.2
Heater Supply Out
X4b
MW1
X101
Voltage Selection Relay MW1
X102b
Neutral MW1
Interlock switches
Temperature Input
X14
X5
P/C - Bus
RJ-45
Coms Modules
C - Bus
RJ-12
P - Bus
RJ-11
BTS
1
2
3
X11
X12
X13
4
8
6
15
14
16
17
65
64
10
22
13
24
23
19
18
69
20
25
26
58
70
71
72
59
60
61
29
44
51
52
45
21
+
-
73
74
Neutral Cut Out Relay
Current Sense
Current Sence Sch
Safety Relay Supply
(Heater & MW Only)
66
67
68
Convection Fan
RED (0 - 10V)
GREEN - (10V)
BLUE - (GND)
62
63
Stirrer Motor 2
30
MW2
51
52
MW1
MW2
31
Neutral MW2
Mains Filter
26
On/Off Switch
25
59
58
Blue
Brown
F1
F2
F3
07
08
09
14
12
10
15
13
11
Fuse Rating
US ROW
20 Amp 20 Amp
20 Amp 20 Amp
12 Amp 13 Amp
Fuse
F1
F2
F3
F4 12 Amp 13 Amp
F5 12 Amp 13 Amp
Mains Input
L
L2
L1 N
E E
Star Delta
ELECTRICAL
CIRCUITS
24 CIRCUIT DIAGRAMS
52
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
$
(
'
)
&
%
5 6 8
7
5 6 8
7
eikon e4s
e4s Wiring Diagram 50/60Hz
B
DRG.No. 32Z3845
0(DJOHVWRQH
A
First issue
B
Mains filter change
21/06/2012
72 71
Magnetron 1
Overheat Stat
70
69
Cavity Overheat Stat
SW3
24
N/C
N/O
SW2
20
12
C
N/O
N/C
SW1
22
21
C
N/C
N/O
Monitor Micro Switch
Primary Micro Switch
Note
M
62
63
Stirrer Motor
83
84
Speaker Wire
Auxiliary Transformer
208/240V
24V
17
16 19
18
1
2
1
2
3
2
1
2
1
1
2
3
4
1
2
3
4
1
2
3
1
2
X8
Cooling Fan
X17
X20
Stirrer Motor 1
X2.2
Heater Supply Out
X4b
MW1
X101
Voltage Selection Relay MW1
X102b
Neutral MW1
Interlock switches
Temperature Input
X14
X5
P/C - Bus
RJ-45
Coms Modules
C - Bus
RJ-12
P - Bus
RJ-11
BTS
58
59
60
61
29
44
51
52
45
21
+
-
NOT USED
62
63
Stirrer Motor 2
30
MW2
51
52
MW1
MW2
31
Neutral MW2
M
60
61
Stirrer Motor
30
31
45
44
Diode
HV07 - 16
MW2
+
T2
42
43
41
230
0
F5
32
Diode
HV07 - 16
MW2
+
T1
56
57
55
230
0
F4
46
MW2 Right Hand Side
(From The Front)
MW1 left Hand Side
(From The Front)
50Hz
Diode
HV07 - 16
MW2
T2
42
43
41
208
240
0
NC
37
38
30
31
F5
60Hz
32
35
36
32a
Diode
HV07 - 16
MW2
T1
56
57
55
208
240
0
NC
51
52
45
44
F4
46
49
50
45a
MW2 Right Hand Side
(From The Front)
MW1 left Hand Side
(From The Front)
74 73
Magnetron 2
Overheat Stat
77 78
11
29
78
77
Heater 1.6kW
Heater 1.6kW
Blue
Brown
Black
Blue
Brown
Cooling Fan
ELECTRICAL
CIRCUITS
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
53
Product e4s
Single Phase & Neutral Model
Microwave 1800W
Convection heater 3.2kW
Neutral
Heater circuit
Microwave circuit
Control circuit
Live
Heater circuit
Microwave circuit
Control circuit
ELECTRICAL
CIRCUITS
11
13
15
7
8
9
24.1 POWER CONNECTIONS e4s
54
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
ELECTRICAL
CIRCUITS
Mains Input - L2
RFI Filter
09
F3
12 Amp
14
Safety Aux.
M MMM
Stirrer
Stirrer
Cooling Fan
Convection Fan Controller
RFI Filter
Mains Input - L1
15
In
TRC
Out
1765596163
64 646464 18 16
24V
1.25A
12V 12V
69
19
257372 27
2870 71 74 26
Safety Relay
Supply
Air Filter Reed Cont.
ON/OFF Switch
MW1 O/H
MW2 O/H
CAV O/H
Input Detection
for Control
24.2 CONTROL CIRCUIT e4s
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
55
ELECTRICAL
CIRCUITS
24.3 HEATER CIRCUIT e4s
RFI Filter
Mains Input - L2
RFI Filter
Mains Input - L1
Heater Element
7711
7829 78
29
Temperature
Thermocouple
+
-
x14.1
x14.2
07
10
F1
20 Amp
x2.1
Safety Heater Relay
Powered by Safety Supply
Relay
11
Processor Controlled
x2.2
Input for
56
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
ELECTRICAL
CIRCUITS
24.4 MICROWAVE CIRCUIT e4s
Mains Input - L2
RFI Filter
08
x.10
RHS SW2
Normally
Open
Door Switches Shown in
Door Open Position
F2
20 Amp
12
23
20
45
21
21 22
LHS SW3
Normally
Open
24
Current Sense
x4a
Hybrid
Relay
To SRB E101 Sence
Safety Relay
Microwave Powered
By Safety Supply Relay
x102b x102a
x4b1
x4b2
32
31
13
30 44
MW1
31
45
46
Mains Input - L1
MW2
208
240
0
55
56
57
Diode
T1
51
52
Diode
37
38
T2
240
208
0
42
41
43
RFI Filter
F4
12 Amp
F5
12 Amp
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
57
COMMISSIONING
25 Commissioning the oven
25.1 Initial installation
1 Unpack the Oven and check for damage.
2 Check Oven Accessories.
3 Check location will provide adequate Ventilation.
4 Locate Oven onto a strong, level, non- ammable
Surface.
5 Remove panels & check all wiring and components for
security.
6 Re t panels.
7 Position the Oven with a minimum air gap of 50mm,
sides & rear.
8 Check Electrical supply and connect.
9 Place a container of water within the oven and switch
it on.
10 Record Model version & check against serial plate.
11 Record QTS (UI) version.
12 Record SRB version.
13 Record Serial Number & check against serial plate.
14 Enter Service Mode.
15 Record Voltage & Frequency.
16 Record Magnetron Current Draw.
17 Check for Microwave leakage.
18 Record Heater current.
19 Check door opening on display.
20 Check lter removal on display.
21 Check fan speed.
22 Turn o the oven and remove the water.
23 Switch on oven and run up to temperature.
24 Operate Oven, Cooking a Standard Batch.
25 Supply User information & contact details to Customer.
26 Instruct Users with an Overview of the equipment,
Oper
ation & Safety (Hazards).
27 Complete Service Report.
25.2 After Service
Complete the following checks after the Oven has been
Serviced/Repaired/Tested before connecting to the
mains electricity power supply:
25.2.1 All internal electrical connections are correct (see
wiring diagrams).
25.2.2 All wiring insulation is correct and is not touching any
sharp edges.
25.2.3 All grounding connections are electrically and
mechanically secure.
25.2.4 All door safety interlocks are secure and mechanically
sound.
25.2.5 The door activates all of the door interlock switches
and in the correct order.
25.2.6 The door operation is smooth, and the arms run freely
in the slots.
25.2.7 The temperature sensor is correctly connected to the
SRB.
25.2.8 The casing is securely re tted with no trapped wires.
Before nishing a service call, recheck the following
points:
25.2.9 Run the Recommission tests to ensure the oven is
functioning correctly and the touch screen is working.
25.2.10 Microwave emissions are below permissible limit of
5mW/cm².
25.2.11 The power output of the oven is checked in
accordance with the procedure.
25.2.12 The oven has correct 50mm (2 inches) air gap all
round and 50mm (2 inches) above. Air ow should not be
restricted.
25.2.13 Complete the Service Report.
58
Service & Parts Manual original Instructions
P
art Number 32Z3871 US
Issue 3
Service & Parts Manual original Instructions
Part Number 32Z3871 US
Issue 3
59
Correct disposal of this product (Waste
Electrical & Electronic Equipment)
To prevent possible harm to the
environment or human health from
uncontrolled waste disposal, please
separate this from other types of
wastes and recycle it responsibly to
promote the sustainable reuse of
material resources.
Household users should contact either the retailer
where they purchased this product, or their local
government o ce for details of where and how they
can take this item for environmentally safe recycling.
Business users should contact their supplier and
check the terms and conditions of the purchase
contract. This product should not be mixed with
other commercial wastes for disposal.
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