Merrychef EIKON E2 Service Manual

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EIKON

Service Manual

This manual is updated as new information and models are released. Visit our website for the latest manual.

Part Number: MCU_SM_0000 2/15

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TABLE OF CONTENTS

SYMBOLS .................................................................................................................................................................. 4

SAFETY PRODUCT

MAIN FEATURES ...................................................................................................................................................... 7

TECHNICAL SPECIFICATIONS ................................................................................................................................ 8

OVEN PLACEMENT/INSTALLATION ....................................................................................................................... 9

ELECTRICAL INSTALLATION................................................................................................................................. 10

QUICK

OPERATING

OVEN CONTROL SETTINGS .................................................................................................................................. 19

COOLING

COLD OVEN CLEANING INSTRUCTIONS E2 ........................................................................................................... 23

SERVICING

ERROR

FIRMWARE

REQUIREMENTS ....................................................................................................................................... 5

OVERVIEW & FUNCTIONS .................................................................................................................... 6

PECIFICATIONS ....................................................................................................................................................... 8

SERIAL NUMBER (RATING PLATE): ............................................................................................................................. 8

INSPECT

OVEN ..................................................................................................................................................... 9

OVEN PLACEMENT .............................................................................................................................................. 9

START GUIDE: QUICK SERVICE OVEN .................................................................................................... 11

START UP ............................................................................................................................................................ 11

USING A COOKING PROGRAM ......................................................................................................................... 12

GUIDE: FULL SERVICE OVEN ......................................................................................................... 13

EASYTOUCH MAIN MENU & KEYBOARD SCREEN ............................................................................................ 13

DEVELOPMENT MODE: CREATING A COOK PROGRAM ................................................................................ 14

UNNING AND SAVING THE PROGRAM ...................................................................................................................... 14

PRESS & GO ....................................................................................................................................................... 15

USING

A COOKBOOK PROGRAM ..................................................................................................................... 15

CHANGING THE OVEN TEMPERATURE ........................................................................................................... 16

VIEWING & EDITING PROGRAMS ..................................................................................................................... 16

ADDING

A NEW PROGRAM GROUP ................................................................................................................. 17

MOVE A PROGRAM WITHIN A PROGRAM GROUP ......................................................................................... 17

ADDING A PROGRAM TO A GROUP ................................................................................................................. 18

MANAGING

PROGRAM GROUPS ...................................................................................................................... 18

OVEN MODE/NAVIGATION SETTINGS (A) ................................................................................................................... 19

ANGUAGE OPTIONS (B) ......................................................................................................................................... 19

OVEN TEMPERATURE SETTINGS AND LABELS (C) ...................................................................................................... 19

RECIPE COUNTERS (E) ........................................................................................................................................... 20

ATE AND TIME SETTINGS (F) ................................................................................................................................. 20

SOUND LEVELS (G) ................................................................................................................................................. 20

OVEN TIMER (H) ..................................................................................................................................................... 20

USB

OVEN PROGRAMS (J) ...................................................................................................................................... 21

RESTORE FACTORY DEFAULTS (K) .......................................................................................................................... 21

TEMPERATURE BAND (L) ......................................................................................................................................... 21

HANGE PASSWORD (M) ........................................................................................................................................ 21

THE OVEN DOWN BEFORE CLEANING .............................................................................................. 22

VEN COOL DOWN .................................................................................................................................................. 22

REPARING TO CLEAN THE OVEN ............................................................................................................................. 22

THE OVEN .......................................................................................................................................... 24

ERVICING PROCEDURE: ........................................................................................................................................ 24

ENTER SERVICE MODE: ........................................................................................................................................... 24

& DIAGNOSTICS ....................................................................................................................................... 25

ERROR MESSAGES ........................................................................................................................................... 25

COPYING ERROR

ERROR MESSAGES: ......................................................................................................................... 25

LOG ........................................................................................................................................................ 25

OVEN COUNTERS .............................................................................................................................................. 25

VISUAL

SRB QTS

VIEW ...................................................................................................................................................... 26

UPDATES ............................................................................................................................................ 27

FIRMWARE UPDATE .................................................................................................................................. 28

Part Number: MCU_SM_0000 2/15

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OVEN

TESTING ....................................................................................................................................................... 29

EQUIPMENT REQUIRED: .................................................................................................................................. 29

ARTH/INSULATION TEST: ....................................................................................................................................... 29

SCREEN CALIBRATION: ............................................................................................................................................ 29

OVEN TESTS ....................................................................................................................................................... 30

ICROWAVE POWER TEST ...................................................................................................................................... 30

MICROWAVE LEAKAGE TEST ................................................................................................................................... 31

EMPERATURE CONTROL TEST ............................................................................................................................... 32

T R

ECOMMISSION TEST ............................................................................................................................................. 33

HIGH VOLTAGE COMPONENTS ............................................................................................................................ 34

POWER TRANSFORMER TEST .................................................................................................................................. 34

IGH VOLTAGE RECTIFIER TEST (DIODE BOARD) ..................................................................................................... 34

HIGH VOLTAGE CAPACITOR TEST ............................................................................................................................ 35

IGH VOLTAGE MAGNETRON TEST .......................................................................................................................... 35

MAINS VOLTAGE COMPONENTS ......................................................................................................................... 36

DOOR INTERLOCK ADJUSTMENT .............................................................................................................................. 36

ONVECTION FAN MOTOR & CONTROLLER .............................................................................................................. 37

OVEN COMPONENTS ............................................................................................................................................ 38

SRB REPLACEMENT ............................................................................................................................................... 40

QTS

REPLACEMENT ............................................................................................................................................... 40

ERROR CODES DISPLAYED.................................................................................................................................. 42

SRB & QTS CIRCUIT BOARDS ............................................................................................................................... 50

QTS

LEDS ............................................................................................................................................................ 50

QTS TERMINAL LOCATIONS .................................................................................................................................... 50

SRB LED’S ........................................................................................................................................................... 51

SRB

TERMINAL LOCATIONS: ................................................................................................................................... 52

CIRCUIT DIAGRAMS ............................................................................................................................................... 53

COMMISSIONING THE OVEN ................................................................................................................................ 58

LIMITED

WARRANTY .............................................................................................................................................. 59

Part Number: MCU_SM_0000 2/15

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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 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.

Part Number: MCU_SM_0000 2/15

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SAFETY REQUIREMENTS

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

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

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

Before attempting to repair the oven, check the oven for microwave emissions using a calibrated microwave emission detector. Check that the oven is not emitting microwaves, even when supposedly not in operation. Check that the oven is not operating continuously, whether the display indicates cooking or not. Never manipulate the mains power lead whilst it is live. Before removing the oven casing ALWAYS isolate the oven from the mains electricity power supply; switch off and disconnect the oven plug from the wall socket, turn off isolator switch to disconnect fixed 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. The equipment must be locked-off to prevent the oven from being inadvertently powered up. Do not leave the oven unattended without the oven panels fitted and keep within sight of other personnel when testing the oven, ensuring persons other than trained engineers are denied access. 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 M Resistor. Temporary insulation should be used to prevent accidental contact with dangerous conductors. Do not touch any internal wiring 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. Only use electrically rated screwdrivers for adjusting ‘Pots’ etc., ensuring the tool touches nothing else. Ensure the Test Equipment is set correctly before use. Test equipment such as meter test leads or clamps must be fitted and removed whilst the unit is dead, for each and every test. Do not undertake functional Magnetron testing with the oven panels removed. Avoid touching the Test Equipment, unless necessary for the operation. Upon completion of a service follow the steps for ‘Commissioning the oven’ under the Commissioning section of this manual.

CAUTION WARNING TO SERVICE TECHNICIANS PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

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

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. 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. 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 must be performed on each oven prior to release to the owner.

IF SMOKE IS OBSERVED:

SWITCH OFF THE OVEN DISCONNECT/ISOLATE FROM THE ELECTRICAL SUPPLY KEEP THE OVEN DOOR CLOSED TO STIFLE

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

WARNING:

ALWAYS DISCHARGE THE HT CAPACITORS BEFORE WORKING ON THE OVEN USING A SUITABLY INSULATED 10MO RESISTOR.

Part Number: MCU_SM_0000 2/15

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PRODUCT OVERVIEW & FUNCTIONS

CONSTRUCTION

• Stainless Steel cavity and casework.

CONTROL SYSTEM

• Color 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

• Microwave magnetron.

• Distribution system, rotating active antenna.

• Microwave settings, off or 5-100% in 1%

increments.

• Safety system: agency approved monitored

interlock door system, current monitoring and overheat detection for the magnetron.

CONVECTED HEAT

• Temperature settings 0°F off and from 212°F to

527°F in 1° F steps.

• Distribution system, re-circulating Planar Plume

airflow.

START UP SEQUENCE

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

Catalytic Converter

Heating

Element

Convection

Fan

Planar Plumes

Lower Jet Plate

Grease Filter

HOW IT WORKS:

The convection fan pulls air in through the grease filter, which removes the majority of particulates from the air flow. The air is then heated and returned to the cavity through the Planar Plumes and lower jet plate to produce an even heat pattern in the oven. This heat layout minimizes the areas where grease can build up, allowing food to cook evenly to produce a crisp golden finish.

After completing a successful logic test, the safety relay is energized 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 sufficiently reduced (cavity temperature of 122F).

The safety relay is de-energized and the QTS & SRB boards remain active. .

Part Number: MCU_SM_0000 2/15

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MAIN FEATURES

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.

CONTROL PANEL

Touch sensitive controls (easyToUCH) for controlling oven functions, including diagnostics and service mode.

USB menuKey

A socket, located under the logo, allows a USB menuKey to be used to update the cooking programs and oven firmware on the control board.

OVEN CAVITY

The 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 efficiency.

JET PLATE

Direct air into the cavity. It must be cleaned on a regular basis, and kept free of debris.

OVEN DOOR

The twin-skinned door has a thermally insulated inner section to lower the surface temperature and incorporates a microwave choke.

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

The air intake provides cooling air for internal components and must be cleaned daily and must NOT be obstructed. The filter must be in place for the oven to function properly.

STEAM VENT

Vents steam from the oven cavity.

SPEC PLATE

The spec plate, located on the rear oven cover, states the Model, Serial Number, and Electrical Ratings.

MAINS ELECTRIC POWER CABLE

Located on the rear of the oven and must be replaced if worn or damaged.

9 10 11 12

Part Number: MCU_SM_0000 2/15

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TECHNICAL SPECIFICATIONS

Specifications

Eikon e2

Overall Size

Height (on 4” legs) 27" 686 mm

Width 14.75” 375 mm

Depth (overall without handle) 28.5” 724 mm

Depth (door open 90 degrees) 40.25” 1022 mm

Weight 150 lbs. 68 kg

Oven Cavity Dimensions

Height 9.6” 244 mm

Width 9.6” 244 mm

Depth 12” 305 mm

Wall Clearance

Top 2” 50.8 mm

Sides 2” 50.8 mm

Electrical Specifications

Phase 1 ph

Voltage 208 / 240

Frequency 60Hz

Amperage Requirement 20 amp

Plug NEMA 6-20P

Cord Length 6’

Max Power Rate 4015W

Power Output (Microwave) 1000W

Power Output (Heater) 2200W

EXTERIOR DIMENSIONS (per oven)

14.75” 28.44”

Serial Number (Rating Plate):

Serial number: YY MM SITE SERIAL i.e. 10 06 2350 12345 (1006235012345) Oven manufactured in June 2010 at Fort Wayne IN, production number 12345.

17.17”

30.98”

Model Number: MODEL CONVECTION MICROWAVE VOLTAGE HERTZ LEAD PLUG COMMUNICATION VERSION CUSTOMER/ACCESSORY COUNTRY

i.e. e2A D X MV 6 S N U 2 GM US (e2ADXMV6SNU2GMUS) model e2A, 2200W, 1000W, 208/240V, 60Hz, 2P+GND (30A), molded Hubbell plug, USB, 2, General Market, USA.

Overall Size

Height (on 4” legs) 27" 686 mm

Width 31.5” 800mm

Depth (overall without handle) 28.5” 724 mm

Depth (door open 90 degrees) 40.25” 1022 mm

Weight 150 lbs. (each) 68 kg (each)

Oven Cavity Dimensions (per oven)

Height 9.6” 244 mm

Width 9.6” 244 mm

Depth 12” 305 mm

Wall Clearance (per oven)

Top 2” 50.8 mm

Sides 2” 50.8 mm

Electrical Specifications (per oven)

Phase 1 ph

Voltage 208 / 240

Frequency 60Hz

Amperage Requirement 30 amp

Plug NEMA 6-30P

Cord Length 6’

Max Power Rate 3100W

Power Output (Microwave) 1000W

Power Output (Heater) 2200W

27.02”

1.5”

Eikon e2T (Twin)

11.75”

6.85”

Part Number: MCU_SM_0000 2/15

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OVEN PLACEMENT/INSTALLATION

NOTE:

Upon receipt of this unit, immediately unpack and inspect for possible concealed shipping damage. If unit is found to be damaged, save all packing materials and contact your delivery carrier immediately. Failure to follow these instructions will negate Merrychef USA’s or your ability to file claims and receive compensation for shipping damage.

IF THERE IS APPARENT DAMAGE: United States and Canada: Arrangements should be made to file a claim against the carrier. As Interstate Commerce Regulations require that the claim must be initiated by the consignee. All shipments to other countries: Freight terms will be developed and extended on an individual basis.

Proper and secure storage facilities should be arranged for the oven(s), if necessary, to protect from outdoor or damp conditions at all times before installation.

INSPECT OVEN

• Inspect oven for damage such as dents in door or inside oven cavity.

• Report any dents or breakage to source of purchase immediately. Do not attempt to use oven if damaged.

• Remove all packing materials from oven interior.

(Note: Check all packing material as accessories may be stored in oven interior.)

• If oven has been stored in extremely cold area, wait a few hours before connecting power.

OVEN PLACEMENT

• Do not install oven next to or above source of heat, such as pizza oven or deep fat fryer. This could cause microwave

oven to operate improperly and could shorten life of electrical parts

• Install oven on level countertop surface

• If provided, place warning label in a conspicuous place close to microwave oven

• Outlet should be located so that plug is accessible when oven is in place

• Provide clearance as shown in Figure 5 and described in the following paragraphs:

a) The unit must have 2” (51 mm) of air gap on either side as well as at the rear. b) Air intake temperature should not exceed 110°F/45°C. Excessive temperature will lead to reduced operating duty

cycle, or premature aging of internal components. Failure to comply with these conditions will invalidate the warranty.

c) A built-in catalytic converter eliminates the need for a ventilation hood so the oven can operate in virtually any

environment.

Figure 5 Oven Clearance Dimensions

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 dry cool place, do not stack ovens.

Part Number: MCU_SM_0000 2/15

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ELECTRICAL INSTALLATION

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 qualified 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 qualified electrician or serviceman installs an outlet near the appliance.

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 off 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 different outlet so that the receiver and microwave are on different branch circuits. If necessary the user should consult the dealer or an experienced radio/television technician for additional suggestions. Note: Modifications 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

DANGER!

THIS APPLIANCE MUST BE EARTHED. FAILURE TO DO SO MAY RESULT IN ELECTRIC SHOCK AND DEATH.

Part Number: MCU_SM_0000 2/15

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QUICK START GUIDE: QUICK SERVICE OVEN

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.

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 briefly showing the serial number and oven data. 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.

COOKBOOK DISPLAY

DISPLAYS ALL COOKING PROGRAMS (Optional)

SHOWS PROGRAM GROUPS FAVORITES (Option al)

PROGRAM GROUP

Each group contains a collection of cooking programs.

CHANGE OVEN TEMPERATURE (Optional)

STOP/CANCEL

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USING A COOKING PROGRAM

1. Select a program group, for example, ‘BURGERS’ to display the individual cooking programs.

2. Select a cook program to start, for example, 2 BURGERS.

3. Follow instructions if displayed on the screen and touch the green ‘check mark’ to cook.

4. 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.

WARNING: 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

AIR FILTER

IMPORTANT:

Clean the Air Filter (6) at the back of the oven and ensure air filter is in place and properly fitted before operating the oven. See ‘Cleaning & Maintenance’ section in this manual.

Part Number: MCU_SM_0000 2/15

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OPERATING GUIDE: FULL SERVICE OVEN

easyToUCH MAIN MENU & KEYBOARD SCREEN

1. DEVELOPMENT MODE enables multistage cooking programs to be developed, then store 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 Favorites, Cooking Program Groups and a complete listing of all cooking programs available.

DEVELOPMENT

MODE

MENU SHORTCUT

COOKBOOK

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

5. SETTINGS are used to control the oven

cleaning process.

settings and functions including time and language, loading cooking programs and for service and maintenance purposes.

6. KEYBOARD SCREEN is used to enter an authorized 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.

KEYBOARD SCROLL

ENTER / OK

PREVIOUS SCREEN

CLEANING/TEMP

CHANGE

SETTINGS

SCREEN

CLEAR SCREEN

KEYBOARD

SPACEBAR

BACKSPACE

RETURN

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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 temperature.

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 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.

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.

Repeat the steps 2-6 from stage 1 above.

Running and saving the program

1. Select OK to confirm the Program.

WARNING: ENSURE PRODUCT IS IN THE OVEN AND ALL SAFETY PRECAUTIONS ARE FOLLOWED BEFORE RUNNING 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 an image to represent the program. (Use the scroll arrows for more pictures.)

5. 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.

6. A symbol with a green tick on a book is displayed to indicate that the program has been successfully saved to the Cookbook.

Example below; setting the cooking time (step 3):

To set the cooking time select the Time symbol.

STAGE 1 DISPLAYED

ADD STAGE

DELETE STAGE

2 31

Enter the cooking time on the pad.

CLEAR

Select OK to accept the time.

STAGE 2 DISPLAYED

BACK TO STAGE 1

654

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scree

PRESS & GO

Running a cooking 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 temperature, cooking time, fan speed and microwave power while the timer counts down. The timer bar turns red to indicate the cooking cycle has finished.

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 finished.

USING A COOKBOOK PROGRAM

To find the required Program in the cookbook:

WARNING:

1. Select ‘COOKBOOK’ from the main menu screen.

2. Select the ALL MENUS symbol.

3. Use scroll up/down arrows to find 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.

WARNING:

ENSURE THERE IS FOOD PRODUCT IN THE OVEN BEFORE STARTING A COOKING PROGRAM.

HOT SURFACE HAZARD

21 3

Change the order of a selected item shown in the Press & Go

Move a selected item to or from the

1 2 3

Press & Go screen.

Select to scroll a list up or down.

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USING A COOKBOOK PROGRAM (CONT’D)

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 first; 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 finished, 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.

4 5 6

CHANGING THE OVEN TEMPERATURE

Take note of the temperature required for the recipe and select OK.

1. Select the temperature symbol.

2. 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.

VIEWING & EDITING PROGRAMS

Select ‘COOKBOOK’ from the main menu screen.

Select the ALL MENUS symbol.

Select ‘EDIT COOKBOOK’.

Use the up/down scroll arrows on the right side of

the screen to find the cooking program, for example 1 BURGER and select the view/edit cooking program symbol.

View or adjust the program as required, see

Development mode for details.

31 2

21 3

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ADDING A NEW PROGRAM GROUP

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. Enter a name for the new Program Group (max. 20 characters).

5. Select an image to represent the Group. (Use the scroll arrows for more pictures.)

6. Select OK to save the Program Group to the Cookbook.

Select backspace to return to the ‘COOKBOOK’.

1 32

4 5 6

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.

1 2 3

Program Group

Move the selected program within the Program Group

Scroll to show programs in the current Program Group

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Page 18

ADDING A PROGRAM TO A GROUP

To add a cooking program to an existing PROGRAM 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 find 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’.

MANAGING PROGRAM GROUPS

To move a program position in a Program Group

1 2

1. Select ‘COOKBOOK’ from the main menu screen.

2. Select ‘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.

Move the selected Program Group

Select OK to Delete the Group.

Edit the selected Program Group

name

321

654

Scroll to

3 4

show Program Groups

Delete the selected Program Group

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OVEN CONTROL SETTINGS

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. Restore settings to Factory defaults. L. Temperature Band. M. Change Settings/Service access passwords.

When finished 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).

Oven mode/navigation settings (A)

1. Select the oven mode/navigation symbol (A) from the ‘Settings’ menu.

2. Select ‘Quick Serve Mode’ for cooking only or ‘Full Serve Mode’ for cooking & development programs.

3. Select ‘Enable Settings’ to display an ‘unlock’ symbol on the Quick Serve Cookbook screen to allow access to the ‘Settings’ menu.

Language options (B)

1. Select the globe symbol (B).

Select the checkbox of the required language

the list shown.

from

Oven temperature settings and labels (C)

To change the oven preheat temperature, select

the temperature symbol (C) to display the keypad, enter the required temperature and select OK.

Note, the temperature options screen is only

2. displayed at start up when two or more temperatures are set above minimum.

To change a temperature label, select the label to

3. display the keyboard, enter the required label name and select OK.

For Service information & error logs (D) refer to Servicing.

1 2

3 4

B C

D E F

G H J

K L M

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Recipe counters (E)

1. Select the clipboard symbol to display a listing of recipe counters.

2. If shown, use the arrows (bottom right) to scroll up and down the list.

Date and Time settings (F)

1. Select the time/date symbol to display the setting

options.

2. CHANGE THE DATE: Select ‘MONTH’, enter the correct Month on the keypad and select OK.

3. Select ‘DAY’, enter the correct Day on the keypad and select OK.

4. Select ‘YEAR’, enter the correct last two digits of the Year on the keypad and select OK.

5. To display the Month first, followed by the Day and Year, select the ‘MM-DD-YY’ checkbox. Note; the Error Logs are recorded using these settings.

6. CHANGE THE TIME: Select ‘HOUR’, enter the correct Hour on the keypad and select OK.

7. Select ‘MIN’, enter the correct Minutes on the keypad and select OK.

8. Select the ‘AM’ or ‘PM’ checkbox for a 12 Hour clock or select ‘24’ for a 24 Hour clock.

9. Select the day name shown to cycle through to display the correct weekday.

Sound levels (G)

1. Select the speaker symbol to display the volume levels.

2. Select a sound level suitable for the environment from none (OFF) to the loudest (100%).

Oven Timer (H)

1. Select the thermometer/timer symbol.

2. Select the ‘Timer Enabled’ checkbox (green tick).

3. Select a weekday using the up/down arrows.

4. Select an empty ‘Time’ box (maximum of 5 per day) or clear the box using the wipe symbol.

5. Enter the start time on the keypad and select OK.

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.

7. Enter the cavity temperature required on the keypad and select OK. Note; you can also select zero to turn the heat off. Selecting the red circle symbol will switch the oven OFF.

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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. Select USB from the settings screen.

2. Slide the USB cover (logo on the oven front) upwards to insert the USB into the slot.

3. When the inserted USB stick has finished flashing select the required USB symbol, for example; RECIPES.

4. Select the new file using the scroll arrows if required to locate the file. Note; a tinted band over a file name indicates the file is not available to use.

5. Double check the file is correct before selecting OK, if not, select ‘X’ and locate the correct file.

6. Progress of the file update is displayed. Once completed the oven restarts and commences heating up to the PREHEAT temperature ready to cook.

7. Remove the USB and keep in a safe place. Reposition the USB cover.

Restore Factory Defaults (K)

1. Select the factory symbol to replace the existing oven settings with the original factory default settings. Note; this action cannot be undone.

2. Select OK, or select the red cross to cancel and keep the existing settings.

Temperature Band (L)

1. Select the ‘Temp Band’ symbol at which the oven controls i.e. ±10°C.

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.

Change Password (M)

1. Select the key symbol to change the oven passwords.

2. Select the oven Settings or Service symbol.

3. Enter the existing password and select OK to confirm.

4. Enter the new password, select OK.

5. Confirm new password, select OK.

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COOLING THE OVEN DOWN BEFORE CLEANING

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.

Preparing to clean the oven

For the oven to operate at peak efficiency, the cavity, door, air filter and grease filter 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 efficiency 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.

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

1 2

3 4

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Cold Oven CLEANING INSTRUCTIONS e2

Complete COOL DOWN procedure and allow oven and accessories to cool before commencing cleaning.

REMOVE & CLEAN Oven Parts:

Grease

Filters

WARNING: DO NOT USE TOOLS

1. Remove the air filter from the back of the oven.

2. Open the oven door, remove the cook plate, bottom jet

plate, and grease filters.

Air Filter

Jet Plate

(under cook plate)

Wash all parts in warm soapy water. Wash off using a clean cloth and plenty of clean, warm water.

Dry by using a fresh, clean cloth

CLEAN THE OVEN

1. Remove any spillages with disposable paper wipes.

Use a dry clean brush to remove any food particles from between the oven floor 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).

3. For difficult 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 off 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.

WARNING: DO NOT USE OVEN WITHOUT A CLEAN AIR FILTER IN PLACE

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.

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Page 24

SERVICING THE OVEN

Servicing Procedure:

1. Disconnect/isolate the oven from the power supply.

2. Check the oven is correctly installed as described in the Installation Instructions (Product Details

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 LOCK-OFF.

section).

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.

WARNING:

ALLOW OVEN TO COOL AND OBSERVE AND FOLLOW ALL SAFETY PRECAUTIONS INCLUDING THOSE DESCRIBED UNDER THE SAFETY REGULATIONS SECTION OF THIS MANUAL BEFORE ATTEMPTING A SERVICE OR REPAIR .

4. Complete an ‘Earth/Insulation test’ (Testing Components section) on the oven before switching on.

5. Check the display for Error messages, if an Error is shown, refer to ‘Errors & Diagnostics’

CAUTION MICROWAVE EMISSIONS:

DO NOT BECOME EXPOSED TO EMISSIONS FROM THE MICROWAVE GENERATOR OR PARTS CONDUCTING MICROWAVE ENERGY.

(Servicing section).

6. Note: If a Firmware update is required, follow the instructions under ‘Firmware Updates’ (Servicing section) before continuing with the service procedure.

Enter Service mode:

1 2 3

1 On start up, tap the top right of the main menu

screen to bypass oven preheat.

2 Enter the authorized 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 keyboard and select OK to display the error log, service information and test options.

1. Check the Error Log for details of any logged

oven errors. See ‘Errors & Diagnostics’ (Servicing section) for more details.

2. Check the ‘Oven Counters’ to find the usage of

components and the Controls area temperature within the cabinet. (‘Errors & Diagnostics’, Servicing section).

3. Check the operational performance of the main

components using the Visual or Data View (‘Errors & Diagnostics’, Servicing section).

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.

5. Follow the procedures under the ‘Commissioning’ section before commissioning the oven for use.

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ERROR & DIAGNOSTICS

ERROR MESSAGES

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.

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

COPYING ERROR MESSAGES:

1. Enter oven settings menu (B) and select the USB symbol.

2. Slide up the USB cover and insert the USB memory stick.

3. Select Upload Files.

4. Select Error Log.

5. Select OK to copy the Error Log to the USB memory stick. The upload progress is shown followed by the upload status.

6. Select backspace 3 times to return to the main menu.

7. Remove the USB memory stick and replace the USB cover.

ERROR LOG

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. Scroll down the list (if necessary) and select an error from the list to display individual records. Select backspace to return to the list, again to return to the Service menu.

OVEN COUNTERS

1. Select ‘OVEN COUNTERS’ (D) to display the oven component usage and ambient Controls

area temperature. Details include the number of screen touches, filter cycles, door cycles, total Oven, Magnetron and Heater element power on time and the ambient controls area temperature in the cabinet.

2. Select backspace to return to the Service menu.

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Page 26

VISUAL VIEW

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 off (green). (Screen shots are for illustration purposes only and may not represent true image found on the oven)

1. Open the oven door and check the color 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 color on the display. Green indicates the door adjustment is ok, red indicates that the Door Interlock Adjustment procedure must be completed.

2. Select the cooling fan and check it’s operating correctly.

3. 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.

4. Select the Convection Fan and check it is operating correctly.

5. 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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Page 27

FIRMWARE UPDATES

Note: if icons are not displayed on the screen,

1 2

press in the same positions on screen as the missing icons to select.

1. Tap the top right of the screen (1) or the same position if it is not displayed to bypass oven preheat.

2. Enter a password (i.e. “Manager”) and select OK (2) or the same position if the green tick symbol is not displayed.

3. Select the USB symbol (3) or the same position if it is not displayed.

4. 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 first, the QTS update second and Icons third.

5. Select the firmware to install and select OK (5) to confirm or the same position for the OK (green tick symbol), if it is not displayed.

6. The update screen displays the file version and product, select OK (green tick symbol) to confirm installation (6) or the same position if it is not

displayed.

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Page 28

IMPORTANT: Downloading from a USB will clear all existing programs. Update the ‘SRB’ first, the ‘QTS’ second and the ‘Icons’ third (found under the USB ‘Recipe’ heading).

7. Switch on the oven and tap the top right of the screen (1) to bypass the preheat stage.

8. Enter the password and select OK to display the Settings menu, see (2).

9. Select the USB symbol (4).

10. Slide the Merrychef badge (oven front top right) upwards and insert the USB Memory Stick into the slot (3).

DO NOT REMOVE USB DURING DOWNLOAD SEQUENCE AS THIS COULD CORRUPT THE USB DATA.

11. Once the USB has stopped flashing, select the ‘FIRMWARE’ USB symbol (5).

12. The current QTS (Touch Screen) & SRB (Smart Relay Board) Firmware versions are displayed at the top left of the screen (6).

SRB FIRMWARE UPDATE

13. Select the ‘SRB’ file required (7).

14. Check the file information is correct before selecting OK (8).

15. Update progress is displayed (9).

16. Select backspace (10) 3x to return to the USB screen shown (11).

17. If the firmware versions are far apart an SRB conflict could cause an error message (12) to be displayed.

QTS FIRMWARE UPDATE

18. Select the ‘QTS’ file (13) with the correct file version number. Note; a tinted band over a file name indicates the file is not valid for that oven.

19. Check the file information shown is correct before selecting OK (14), if not, select ‘X’ and locate the correct file.

20. The file update progress is displayed (15). At 50% the cooling fan stops operating, after 100% various screen displays appear as the software reboots.

21. Check the screen shows the correct QTS version was installed (16), if not, repeat the process using the correct file.

22. Remove the USB and keep in a safe place. Reposition the USB cover.

87 9

1110 12

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Page 29

OVEN TESTING

Equipment required:

• Digital Multi-meter (D.M.M.).

• Microwave detection / leakage meter.

DANGER:

THIS APPLIANCE MUST BE EARTHED. FAILURE TO DO SO MAY RESULT IN ELECTRIC SHOCK AND DEATH.

Earth/Insulation Test:

1. Disconnect/isolate the oven from the power supply.

2. Connect the leads of a DMM (Portable Application Tester).

3. Connect the Earth from the P.A.T. to the oven hinge (A).

4. Place the P.A.T. in an open area, such as the floor, away from any persons.

5. Perform a Class 1 test, a PASS indicates the oven earthing circuit is functioning ok.

6. If a FAIL is indicated, remove the oven casing and check ALL earth connections before retesting.

NEVER operate an oven that has failed this test as it could be potentially dangerous.

WARNING:

ALLOW OVEN TO COOL AND 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.

Screen calibration:

1. Apply continuous light pressure to the top right of the screen while switching the oven on.

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.

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Page 30

OVEN TESTS

1. Enter Service mode (Servicing section).

Select the down arrow to display the individual

Oven tests (A) for the oven to perform.

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 affected by line voltage under load, so this test is an approximation only.

1. [4Ensure the oven is cold, then enter Service mode

to bypass oven preheating.

2. Select Visual View (B) to check the oven cavity temperature reading is as close to room temperature as possible.

a) Fill a microwave safe container (glass or

plastic) with one liter (1.78 pints) of tap water

at about 68°F (20°C).

b) 2 Measure and record the water temperature

in the container using a temperature sensor

capable of reading ±0.1 degree increments. c) 3 Place the container centrally inside the oven. d) Select ”Microwave Power Test” (C) from the

service mode tests. (Microwave power 100% for

63 seconds, fan minimum). e) When the countdown has finished, remove the

container from the oven, immediately stir with a

plastic implement and measure the water

temperature. f) Calculate the temperature rise of the water (end

temperature minus the start temperature).

The Temperature Rise should be: 38.7°F rise (21.5°C rise)

If the temperature rise is outside these limits:

• Check the microwave circuit and components,

(Testing Components section).

VISUAL VIEW

MICROWAVE POWER TEST

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Page 31

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 deflection,

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.

• With any casework removed the leakage

should not exceed 5mW/cm².

Procedure:

1. Add 275ml of cold water into a 600ml microwave

safe container.

2. Place the 600ml container in the center of oven and close the door.

3. Enter Service mode and select ‘Microwave leakage test’ (A) from the oven tests.

4. Set the leakage meter to the appropriate scale/range.

MICROWAVE LEAKAGE TEST

5. Move the survey meter probe across all casework joins and vent areas including those marked in yellow, shown opposite.

6. When the Magnetron circuit stops after 30 seconds, change the water and reselect the test to continue.

7. Select the red ‘X’ on the display to stop the test at any time.

8. Readings must be below 5mW/cm². If a level greater than 5mW/cm² is observed, this should be reported to Merrychef Service Department immediately.

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.

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Page 32

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.)

TEMPERATURE CONTROL TEST

Procedure: 1 Place the probe of a temperature reader (A) onto

a heat sink in the centre of the oven cavity and close the oven door.

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.

3 Once the oven is up to maximum temperature check for a stable temperature reading. 4 Select the red X to finish the test, if necessary. 5 If the temperature reading is different to the maximum set point, scroll up (C) to select TEMP. COMP. (Temperature

Compensation) (D) and enter the password: ‘tcomp’.

6 Enter the number from the temperature reader

on the keypad (E) and select OK to calibrate the SRB to the thermocouple.

7 Retest to check that the oven cavity

TEMP. COMP.

temperature reading is the same as the oven maximum set point temperature.

If the temperature reading is unstable:

a) Disconnect and isolate the oven from the

electricity supply. b) Allow the oven to cool down. c) Remove the oven casing. d) Check the cavity temperature sensor wire

and connections. e) If the wire and connections are ok; replace

the cavity temperature sensor (see Spares

& Replacement section). f) Replace oven casing, switch ON and

retest. g) 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).

8 Repeat the Temperature Control Test procedure.

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Page 33

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: 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.

2 After a test has successfully passed, select OK

to continue.

3 When all the tests have been successfully

performed the display shows the Recommission test has passed, select OK to confirm.

4 In the event of a Recommission test failure, the

detail will be recorded in the Error log. Any error should be rectified and the Recommission test run again.

RECOMMISSION TEST

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Page 34

HIGH VOLTAGE COMPONENTS

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 filament when connected to mains power supply.

Even when the oven is not cooking, the High Voltage Capacitor has High Voltages present.

Power Transformer Test

1 Disconnect and isolate the oven from the

electricity supply.

2 Allow the oven to cool down. 3 Remove the oven casing. 4 Ensure that the High Voltage Capacitor is

discharged before commencing work.

5 Remove all connections from the Power

Transformer.

6 Using a D.M.M., check the resistance of the

windings (A). Results should be as follows: a) Mains winding (208V) across (1) and (2),

between 0.5 Ω and 1.0 Ω b) Mains winding (240V) across (1) and (3), between

0.5 Ω and 1.0 Ω

c) Mains winding to unit chassis ground or to

baseplate of transformer, making sure varnish on

baseplate is scraped at test point. Reading should

be infinite resistance. d) High Voltage winding, across (1) and (4),

resistance reading should be infinite. e) High Voltage winding (4) to unit chassis ground or

to baseplate of transformer, making sure varnish

on baseplate is scraped at test point, between 45 Ω

and 60 Ω. f) Filament winding, across (5) and (6), between 0.1

Ω and 0.3 Ω. g) Filament winding, across (1) and (5), reading

should be infinite resistance.

High Voltage Rectifier Test (Diode Board)

1 Disconnect and isolate the oven from the electricity supply. 2 Allow the oven to cool down. 3 Remove the oven casing. 4 Ensure that the High Voltage Capacitor is discharged before

commencing work.

5 Remove all connections from the High Voltage Rectifier

(diode).

6 Using an Analog Meter, test for continuity in both directions (a

then b). 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

DANGER:

WARNING:

ALWAYS DISCHARGE THE HT CAPACITORS BEFORE WORKING ON THE OVEN USING A SUITABLY INSULATED 10M RESISTOR.

WARNING:

ALLOW OVEN TO COOL AND 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.

Part Number: MCU_SM_0000 2/15

Page 35

Even when the oven is not cooking, the High Voltage Capacitor has High Voltages present because of the Soft Start circuit.

High Voltage Capacitor Test

1 Disconnect and isolate the oven from the electricity

supply.

2 Allow the oven to cool down. 3 Remove the oven casing. 4 Ensure that the High Voltage Capacitor is discharged

before commencing work.

5 Remove all connections from the High Voltage

Capacitor.

6 Using a D.M.M., check for continuity between the

terminals. Results should be as follows:

a) Across Terminals, pass if approx. 10 MΩ b) Across Terminals and case, pass if open circuit.

High Voltage Magnetron Test

1 Disconnect and isolate the oven from the electricity

supply.

2 Allow the oven to cool down. 3 Remove the oven casing. 4 Ensure that the High Voltage Capacitor is

discharged before commencing work.

5 Remove all connections from the High Voltage

Magnetron.

6 Using a D.M.M. check for continuity. Results should

be as follows:

a) Filament terminals pass if 1 Ω or less.

b) Between each filament terminal and the metal

outer case should read open.

Part Number: MCU_SM_0000 2/15

Page 36

MAINS VOLTAGE COMPONENTS

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 off the Microwave circuit when the door is opened and for the Microwave circuit to operate when the door is closed and the door seal expands.

Door Interlock Adjustment procedure:

 Disconnect and isolate the oven from the electricity

supply.

 Allow the oven to cool down.  Remove the oven casing.  Ensure that the High Voltage Capacitor is discharged

before commencing work.

1 Place a red 2mm spacer over each top corner of the

door seal and carefully close the door.

2 On the left side slightly loosen the pivot screw. 3 Then slightly loosen the adjusting screws and pivot the

microswitch backplate downwards until the microswitch (SW3) just clicks and tighten all the screws.

4 Open door to replace the red 2mm spacers with green

4mm spacers and carefully close the door.

5 On the ride side, slightly loosen the pivot screw. 6 Then slightly loosen the adjusting screws and pivot

the microswitch backplate downwards until the microswitch (SW2) just clicks and tighten all the screws.

7 Ensure that all the screws are tightened.

OVEN DOOR OPEN

8 Remove 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.

Opening the door:

• SW3 opens first

OVEN DOOR CLOSED

• SW2 opens second

• SW1 closes third

Closing the door:

• SW1 opens first

• SW2 closes second

• SW3 closes third

SW3

SW1

SW2

SW2 SW1

SW2

SW1

SW2

SW1

SW3

Part Number: MCU_SM_0000 2/15

Page 37

6823

Convection Fan Motor & Controller

Convection Fan Motor

The convection motor is a 3-phase AC motor having a maximum speed of 3600 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.

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 360 rpm to 3600 rpm.

• Door Open, 360 RPM

• Door Closed (not cooking), 1080 RPM

• Door Closed (cooking), speed as specified by

program or setting up to a Maximum of 3600 RPM

LED Status display (A):

• Inverter Off/No supply, LED OFF.

• Power On/Ready, LED flashes 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:  Disconnect and isolate the oven from the

electricity supply.

 Allow the oven to cool down.  Remove the oven casing.  Ensure that the High Voltage Capacitor is

discharged before commencing work.

 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 to Black ~36Ω

• Black to Brown ~36Ω

• Brown to Blue ~36Ω

• Black, Brown, or Blue to Earth — Open

Part Number: MCU_SM_0000 2/15

Page 38

OVEN COMPONENTS

Right Side Components

1 Monitor Door Switch 2 Secondary Door Switch 3 RH Door Hinge Assembly

Left Side Components

4 Primary Door Switch 5 Oven Cavity Thermocouple 6 LH Door Hinge Assembly

Back Side (Inside) Components

7 Speaker 8 Fuses 9 Heating Element (connectors shown)

DANGER:

WARNING:

ALLOW OVEN TO COOL AND 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.

1 2 3

Part Number: MCU_SM_0000 2/15

Page 39

Back Side (Outside) Components

1 Main Fan Motor 2 Cooling Fans 3 Magnetron Fan 4 Power Cord

Top Side Components

5 QTS Touch Screen 6 SRB Smart Relay Board 7 Power Switch 8 Step-down Transformer 24V 9 Oven Cavity High Limit 10 Stirrer Motor 11 HV Capacitor 12 Waveguide 13 HV Magnetron 14 Magnetron High Limit 15 RFI Filter 16 Motor Controller 17 HV Diode Board 18 HV Transformer 19 Voltage Select Relay

18 19

3 2

6 5

Part Number: MCU_SM_0000 2/15

15 13 14 12 11 109 8 7

Page 40

SRB & QTS CIRCUIT BOARDS

(1)

SRB replacement

1 Disconnect and isolate the oven from the electricity

supply.

2 Allow the oven to cool down. 3 Remove the oven casing. 4 Ensure that the High Voltage Capacitor is

discharged before commencing work.

5 Taking anti-static precautions disconnect all

connections on the SRB.

6 Remove the PM (Personality Module) (1) from the

SRB and place safely aside.

7 Release retaining screws and remove the SRB (2). 8 Replace SRB and secure retaining screws. 9 Reconnect all connections to the SRB, for details see ‘SRB

Terminal Locations’ (Electrical Circuits section).

Note: Refit the PM removed from the old SRB to the new SRB. Refer

to the following section on PM replacement if a new PM is

QTS replacement

1 Disconnect and isolate the oven from the electricity supply. 2 Allow the oven to cool down. 3 Remove the oven casing. 4 Ensure that the High Voltage Capacitor is discharged before

5 Remove the top front panel. 6 Taking anti-static precautions disconnect all connections on the

7 Remove the PM (Personality Module) (3) from the QTS and place

8 Release the four retaining nuts and remove the QTS assembly (4). 9 Refit the PM removed from the old QTS to the new QTS. Refer to

10 Replace the QTS assembly and secure with the retaining nuts. 11 Reconnect all connections to the QTS, for details see ‘QTS

fitted.

commencing work.

QTS.

safely aside.

the following section on PM replacement if a new PM is fitted.

Terminal Locations’ (Electrical Circuits section).

(2)

(3)

(4)

Part Number: MCU_SM_0000 2/15

Page 41

(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.

1 With a new PM fitted and casing refitted,

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).

2 Tap the top right of the screen to bypass

the preheat stage (2).

3 Enter the manager password and select

OK to display the Settings menu, see (3).

4 Select the USB symbol (4). 5 Slide the Merrychef badge upwards and

insert the USB Memory Stick into the slot (5).

6 Once the oven has recognized the USB

device, select the required USB symbol (6).

7 Select the Application Icons file to

download (7). Note; a tinted band over a file name indicates the file is not valid for that oven.

8 Check the file information shown is

correct before selecting OK (8), if not, select ‘X’ and locate the correct file.

9 When completed, select recipes to load

the cooking programs (9). Once the programs are loaded the oven restarts.

10 Enter the Date & Time settings (10). For

details see under ‘Oven Control Settings’ (Product Information section).

11 Turn the oven switch OFF/ON. 12 Remove the USB and keep in a safe

place. Reposition the USB cover.

5 6

8 9

3 4

Part Number: MCU_SM_0000 2/15

Page 42

ERROR CODES DISPLAYED

Error Code

Oven

Error/Event

Condition

Description Trigger

Error Level

System

Response

E000 All OK

E083 E2, E6

E2, E6 Invalid Date

E084

E085 None

E086 E2, E6

E087 E6

E088 All

Incompatible SRB software version

Recommission fail Elevator

Recommission fail Radiant

Recommission fail Low Heater

Low or High line voltage

Communication between the QTS and the SRB has been reestablished.

SRB firmware version is incompatible with the QTS version

The QTS has determined that the state of the Real Time Clock (RTC) is invalid

Only tested for

The elevator failed the recommission test

The radiant heater failed the recommission test

The low convection heater failed the recommission test

The Mains AC supply voltage is out of range

The SRB was previously in a communication error state (E107) and the error has now cleared. The QTS has found that the firmware running the SRB is not supported.

Only tested for when oven turns on. The QTS has found that the system date is 2010 or earlier.

when oven turns on. The QTS has found that the RTC has an invalid date/time setting or N/A

Pressing the "Red X" when "RADIANT TEST IN PROGRESS " is displayed

Pressing the "Red X" when "LOW HEATER TEST IN PROGRESS" is displayed

The QTS determines that the AC mains voltage read from the SRB is out of the ±10% tolerance range

N/A

Critical

Warning

N/A

Warning

"E088 OK" message is displayed in the error log.

This message is

"E083 SRB VERSION CONFLICT" message is displayed in the error log. "E084 INVALID DATE" message is displayed in the error log.

"INVALID

"E085 RECOMMISSIO N FAIL ELEVATOR" message is displayed in the "E086 RECOMMISSIO N FAIL RADIANT" message is displayed in the "E087 RECOMMISSIO N FAIL LOW HEATER" message is displayed in the "E088 SUPPLY VOLTAGE (V) OUT OF RANGE" message is displayed in the

Part Number: MCU_SM_0000 2/15

Page 43

Error

Code

Oven

Error/Event

Condition

Description Trigger

Error Level

System

Response

E3, E4, E5

E089

E2, E6

E090 All

E091 E3

E2, E3, E4, E5

E092

E093 All

Recommission fail Cooling fan(s)

Recommission fail Convection fan

Recommission fail – Turn Table

Recommission fail – Convection Heater

Recommission fail – High Convection Heater

Recommission fail – Magnetron(s)

At oven start up

the QTS senses that the AC mains voltage read from the SRB is out of

the ±10% The cooling fan(s) failed the recommission test

Pressing the "Red

The convection fan failed the recommission test

The turn table failed the recommission test

The Convection Heater failed the recommission test

The high convection heater failed the recommission test

The magnetron(s) failed the recommission test

Pressing the "Red

X" when

"CONFIRM

COOLING FAN IS

RUNNING" is

displayed

X" when

"CONFIRM

COOLING FANS

RE RUNNING" is displayed Pressing the "Red X" when "CONFIRM CONVECTION FAN IS RUNNING" is displayed Pressing the "Red X" when "OPEN DOOR CONFIRM TURNTABLE IS ROTATING" is displayed Pressing the "Red X" when "HEATER TEST IN PROGRESS" is displayed

Pressing the "Red X" when "HIGH HEATER TEST IN PROGRESS" is displayed

Pressing the "Red X" when "MAGNETRON TEST IN PROGRESS" is displayed

N/A

“SUPPLY VOLTAGE (V) OUT OF RANGE" message is displayed on the "E089 RECOMMISSIO N FAIL COOLING FAN" message is displayed in the "E089 RECOMMISSIO N FAIL COOLING FANS" message is displayed in "E090 RECOMMISSIO N FAIL CONVECTION FAN" message is written to the "E091 RECOMMISSIO N FAIL TURNTABLE" message is written to the "E092 RECOMMISSIO N FAIL HEATER" message is written to the "E092 RECOMMISSIO N FAIL HIGH HEATER" message is written to the "E093 RECOMMISSIO N FAIL MAGNETRON" message is written to the

Part Number: MCU_SM_0000 2/15

Page 44

Error Code

Oven

Error/Event

Condition

Description Trigger

Error Level

System

Response

E094 E3, E4, E5

E095 E3, E4, E5

E096 All

E097 All

E098 All Incomplete Cleaning

E099 E3, E4, E5 Filter Override

E100 All Main power ON

Recommission fail Filter in

Recommission fail Filter out

Recommission fail Door close

Recommission fail Door open

The oven does not sense that the filter is installed

The oven does not sense that the filter has been removed

The oven door switch has failed the door close test

The oven door switch has failed the door open test

The QTS has determined that the cleaning process was started but not completed User has removed the filter and elected to continue cooking

The AC power to the oven is energized

The SRB does not see the magnetic switch input from the air filter while the “INSTALL AIR FILTER” message The SRB does not see the magnetic switch input from the air filter while the “REMOVE AIR FILTER” message The SRB does not see the switch input from the door while the “CLOSE OVEN DOOR” message is The SRB does not see the magnetic switch input from the air filter while the “OPEN OVEN DOOR” message Only tested for when oven turns on. The QTS has found that during the previous oven on period, a User removes the air filter. On the screen where the message “AIR FILTER REMOVED” and The SRB is reset after 25V AC power is applied from the transformer

N/A

Warning

N/A

"E094 RECOMMISSIO N FAIL FILTER INSTALL" message is written to the "E095 RECOMMISSIO N FAIL FILTER REMOVAL" message is written to the "E096 RECOMMISSIO N FAIL DOOR CLOSE" message is written to the "E097 RECOMMISSIO N FAIL DOOR OPEN" message is written to the "E098 INCOMPLETE CLEANING" message is displayed in the error log. "E099 FILTER OVERRIDE" message is displayed in the error log.

"E100 MAIN POWER ON" message is written to the ovens error log

E101 All Magnetron failed

Magnetron failed to turn On when requested

The current measured by the SRB was outside of the tolerance range

"E101 MAGNETRON

Critical

Part Number: MCU_SM_0000 2/15

FAILED" message is written to the error log.

Page 45

Error Code

Oven

Error/Event

Condition

Description Trigger

Error Level

System

Response

E2, E3, E4, E5 Heater On

E102

E6 High Heater On

E103 All Ambient overheat

All

E104

E105 All High or low freq

E106 All Cavity overheat

All Comm error

E107

Overheat stats released

Convection Heater element failed to turn OFF when requested

High Convection Heater element failed to turn OFF when requested

The temperature measured inside the ovens cabinet is too high

The cavity temperature is above the high limit

The magnetron(s) temperature is above the high limit and the magnetron(s) are off The frequency is outside of the ovens range of operation

Cavity temperature is higher than the set point range while cooking

There is no communication between the QTS and the SRB

The current measured by the SRB is >1 amp with the convection heater OFF

The current measured by the SRB is >1 amp with the high heater OFF

The ambient temperature measured by the QTS and or SRB is >70°C (158°F)

Cavity thermal switch's (TCO) have opened

Magnetron thermal switch's (TCO) have opened and the Magnetron(s) are off

The SRB's line monitoring circuit detects that that the frequency is outside of the ± 2Hz range The SRB has detected that the cavity temperature is greater than 25°C (77°F) above the setpoint the The QTS can no longer send or receive data from the SRB.

Critical

Warning

Critical

"E102 HEATER ON WITHOUT REQUEST" message is written to the error log. "E102 HIGH HEATER ON WITHOUT REQUEST" message is written to the "E103 AMBIENT OVERHEAT. PLEASE REMOVE, CLEAN AND REPLACE THE "E104 OVERHEAT STATS RELEASED" message is written to the

"E105 SUPPLY FREQUENCY (Hz) OUT OF RANGE" message is written to the "E106CAVITY OVERHEATED" message is displayed in the error log.

“E107 COMM ERROR" message is displayed on the screen.

Part Number: MCU_SM_0000 2/15

The SRB no longer

receives data from the QTS.

SRB writes error to the log.

Page 46

Error Code

Oven

Error/Event

Condition

Description Trigger

Error Level

System

Response

E108 All QTS PM error

E109 All SRB PM error

All

Incompatible SRB software version

E110

E3, E4, E5

Wrong QTS PM found / no QTS PM found

Wrong SRB PM found / no SRB PM found

SRB firmware version is incompatible with the SRB

SRB firmware version is incompatible with the QTS version

The QTS has an incorrect PM (personality module) installed or no PM is installed The SRB has an incorrect PM (personality module) installed or no PM is installed The SRB has found that the firmware running the SRB is not supported.

The QTS has found that the firmware running the SRB is not supported.

Critical

“E108 QTS PM FAILED" message is displayed on the screen.

“E109 SRB PM FAILED" message is displayed on the screen.

This error is not recorded in the error log.

"E110 SRB VERSION

E111 All Cavity sensor error

E3, E4, E5

SRB board sensor failed

E112

E2, E6

E113 All

Magnetron On without request

The cavity temperature sensor is no longer operating

The temperature sensor on the SRB board is no longer operating

Magnetron failed to turn OFF

The SRB is reading an open or shorted thermocouple input

The SRB is reading an open or shorted sensor mounted on the board

The magnetron current measured by the SRB was outside of the tolerance range

Critical

"E111 CAVITY SENSOR" message is displayed in the error log.

"E112 CAVITY SENSOR CIRCUIT FAILED" message is displayed in the "E112 SRB AMBIENT SENSOR CIRCUIT FAILED" message is "E113 MAGNETRON ON WITHOUT REQUEST" message is written to the

Part Number: MCU_SM_0000 2/15

Page 47

Error Code

Oven

Error/Event

Condition

Description Trigger

N/A N/A

Error Level

System

Response

E114 None Spare (not used)

E115 E6 Convection Fan failed

E2, E3, E4, E5 Heater off

E116

E6 High Heater off

E3, E4, E5 Magnetron overheat

E117

E2, E3 Magnetron overheat

The convection fan has failed

Convection heater element failed to turn On

High convection heater element failed to turn On

One or both of the magnetrons thermal switch's has released but the condition clears in time One or both of the magnetrons thermal switch's has released but the condition does not clear in time The magnetron thermal switch has released but the condition clears in time

The magnetron thermal switch has released but the condition does not clear in time

The feedback from the convection fan controller has indicated to the SRB that the controller has The SRB senses that the heater current is <1 amp when requested to be ON

The SRB senses that the high heater current is <1 amp when requested to be ON One or both of the magnetron thermal cut-outs has released while one or both magnetrons are One or both of the magnetron thermal cut-outs has released while one or both magnetrons are The magnetron thermal cut-outs has released while the magnetron is running and the condition clears The magnetron thermal cut-outs has released while the magnetron is running and the condition has not

N/A N/A

"E115 CONVECTION

Critical

FAN FEEDBACK" message is written to the "E116 NO HEATER ON

Critical

REQUEST" message is written to the error log. "E116 NO HIGH HEATER ON REQUEST" message is written to the error log. "E117 MAGNETRON

Warning

OVERHEAT" message is written to the error log. "E117 MAGNETRON

Critical

OVERHEAT" message is displayed in the error log. "E117 MAGNETRON

Warning

OVERHEAT" message is written to the error log. "E117 MAGNETRON

Critical

OVERHEAT" message is displayed in the error log.

Part Number: MCU_SM_0000 2/15

Page 48

Error Code

Oven

Error/Event

Condition

Description Trigger

Error Level

System

Response

Right Magnetron overheat

E118 N/A

Bottom Convection Fan failed

E119 E6 Low Heater On

E120 E6 Low Heater Off

E2 Radiant On

E121

The right magnetron thermal switch has released but the condition clears in time The right magnetron thermal switch has released but the condition does not clear in time The bottom convection fan has failed

The right magnetron thermal cut-out has released while the right magnetron is running and the The right magnetron thermal cut-out has released while the right magnetron is running and the The feedback from the bottom convection fan controller has indicated to the SRB that the

Low convection heater element failed to turn Off when requested

The current measured by the SRB is higher than what is expected. The calculation is affected by the

Low convection heater element failed to turn On

The current measured by the SRB is lower than what is expected. The calculation is affected by the

Radiant heater element failed to

Not Implemented Yet

turn Off when requested

The current

measured by the SRB is higher than what is expected. The calculation is affected by the

Warning

Critical

"E117 RIGHT MAGNETRON OVER HEATED" message is written to the "E117 RIGHT MAGNETRON OVER HEATED" message is displayed in the "E118 Bottom CONVECTION FAN FEEDBACK" message is written to the "E119 LOW HEATER ON WITHOUT REQUEST" message is written to the "E120 NO LOW HEATER ON REQUEST" message is written to the error log. "E121 RADIANT ON WITHOUT REQUEST" message is written to the error log.

Part Number: MCU_SM_0000 2/15

Page 49

Error Code

Oven

Error/Event

Condition

Description Trigger

Error Level

System

Response

Radiant heater element failed to

E2 Radiant Off

turn On

E122

The current

The food elevator has failed.

E123 None Elevator failed

The left magnetron thermal switch has released but

Left Magnetron overheat

the condition

E124

clears in time The left magnetron thermal switch has released but the condition does not clear in time Left Magnetron failed to turn On

E125 None Left Magnetron failed

when requested

Left magnetron failed to turn OFF

E126 None

Left Magnetron On without request

The temperature sensor on the QTS board is no longer operating

E127 E2, E6

QTS board sensor failed

Not Implemented Yet

measured by the SRB is lower than what is expected. The calculation is affected by the The system determined that the food elevator is not operating correctly.

The left magnetron thermal cut-out has released while the left magnetron is running and the condition clears The left magnetron thermal cut-out has released while the left magnetron is running and the condition has not The current measured by the SRB was outside of the tolerance range

The left magnetron current measured by the SRB was outside of the tolerance range

The QTS is reading an open or shorted sensor mounted on the board

Critical

Warning

Critical

"E122 NO RADIANT ON REQUEST" message is written to the error log.

"E123 ELEVATOR FAILED" message is displayed in the error log. "E124 LEFT MAGNETRON OVER HEATED" message is displayed in the "E124 LEFT MAGNETRON OVER HEATED" message is displayed in the "E125 LEFT MAGNETRON FAILED" message is written to the error log. "E126 LEFT MAGNETRON ON WITHOUT REQUEST" message is written to the "E127 QTS AMBIENT SENSOR CIRCUIT FAILED" message is

Part Number: MCU_SM_0000 2/15

Page 50

SRB & QTS CIRCUIT BOARDS

QTS LEDs

• Run - Pulsing 1 second flash, indicating that the

board has booted up.

• Power - Lit to show that there is a power supply

from the SRB.

• P-Bus - Irregular flashing, indicating data

communication with SRB.

• C-Bus - Lit to show data being loaded from the PM

onto the QTS.

• LD5 - Lit to show.

1 LD5 2 Power, Run, P-Bus, C-Bus.

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

4 5 6

45 6

Part Number: MCU_SM_0000 2/15

Page 51

SRB LED’s

• P-Bus - Irregular flashing, indicating data

communication with QTS.

• Run - Pulsing 1 second flash, 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 energize 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: flashes when data is being

sent / received. RUN: 1 second flash.

9 Oven Door. 10 Microwave safety relay. 11 Microwave 2 drive. 12 Microwave 1 drive.

Part Number: MCU_SM_0000 2/15

Page 52

49875

2120

SRB Terminal Locations:

1 X3 - Output for e2 Convection Fan

Controller.

2 X101 - Voltage Selection Relay coil

feeds.

3 X18b – Air Intake Filter Reed (Jumper)

4 X18e – Right Magnetron Thermostat

(Jumper)

5 X18d - Magnetron Thermostat (Top).

6 X18c - Cavity Overheat Thermostat

7 X18a - On/Off 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, QTS Cable 13 X1 - 24V supply from Low Voltage

Transformer

14 X8 - Cooling Fan 15 X17 - Not used. 16 X20 - Microwave Stirrer(s) 17 X9 - Mains Output, Convection Fan

Controller.

18 X103.1 - Mains Output to Low Voltage

Transformer.

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 Switch (Live for Magnetron Transformers)

25 X10 - Connector Block for door

switches

26 X4b - Live for Magnetron Transformers

Part Number: MCU_SM_0000 2/15

Page 53

CIRCUIT DIAGRAMS

Part Number: MCU_SM_0000 2/15

Page 54

Part Number: MCU_SM_0000 2/15

Page 55

Part Number: MCU_SM_0000 2/15

Page 56

Part Number: MCU_SM_0000 2/15

Page 57

Part Number: MCU_SM_0000 2/15

Page 58

COMMISSIONING THE OVEN

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-flammable Surface.

5. Remove panels & check all wiring and components for security.

6. Refit panels.

7. Position the Oven with a minimum air gap of 2” (50mm) sides & rear.

8. Check Electrical supply and connect.

9. Place a container of water in 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 filter removal on display.

21. Check fan speed.

22. Turn off 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, Operation & Safety (Hazards).

27. Complete Service Report.

After Service

Complete the following checks after the Oven has been Serviced/Repaired/Tested before connecting to the mains electricity power supply:

 All internal electrical connections are correct

(see wiring diagrams).

 All wiring insulation is correct and is not touching

any sharp edges.

 All grounding connections are electrically and

mechanically secure.

 All door safety interlocks are secure and

mechanically sound.

 The door activates all of the door interlock

switches and in the correct order.

 The door operation is smooth, and the arms run

freely in the slots.

 The temperature sensor is correctly connected

to the SRB.

 The casing is securely refitted with no trapped

wires.



Before finishing a service call, recheck the following points:

 Run the Recommission tests to ensure the oven

is functioning correctly and the touch screen is working.

 Microwave emissions are below permissible limit

of 5mW/cm².

 The power output of the oven is checked in

accordance with the procedure.

 The oven has correct 2” (50mm) air gap all

round and 2” (50mm) above. Air flow should not be restricted.

 Complete the Service Report.

Part Number: MCU_SM_0000 2/15

Page 59

LIMITED WARRANTY FOR COMMERCIAL PRODUCTS

LIMITED WARRANTY

Merrychef USA, (“Merrychef”) warrants this product to be free from defects in material and workmanship for a period of one (1) year from the date the product is installed or eighteen months (18) months from the date of shipment from our facility, whichever comes first.

During the warranty period, Merrychef shall, at Merrychef’s option, repair or replace parts determined by Merrychef to be defective in material or workmanship, and with respect to services, shall re-perform any defective portion of said services. The foregoing shall be the sole obligation of Merrychef under this Limited Warranty with respect to the equipment, products and services. With respect to equipment, materials, parts and accessories manufactured by others, Merrychef’s sole obligation shall be to use reasonable efforts to obtain the full benefit of the manufacturer’s warranties. Merrychef shall have no liability, whether in contract, tort, negligence, or otherwise, with respect to non-Merrychef manufactured products.

WHO IS COVERED

This Limited Warranty is available only to the original purchaser of the product and is not transferable.

EXCLUSIONS FROM COVERAGE

• Repair or replacement of parts required because of misuse, improper care or storage, negligence, alteration, accident, use of incompatible supplies or lack of specified maintenance shall be excluded

• Normal maintenance items, including but not limited to, light bulbs, fuses, gaskets, door seals, O-rings, air filters, interior and exterior finishes, lubrication, de-liming, broken glass, etc.

• Failures caused be erratic voltages

• Improper or unauthorized repair

• Changes in adjustment and calibration after ninety (90) days from equipment installation date

• This Limited Warranty will not apply to any parts subject to damage beyond the control of Merrychef, or to equipment which has been subject to alteration, misuse or improper installation, accidents, damage in shipment, fire, floods, power changes, other hazards or acts of God that are beyond the control of Merrychef.

• This Limited Warranty does not apply, and shall not cover any products or equipment manufactured or sold by Merrychef when such products or commercial equipment is installed or used in a residential or non-commercial application. Installations not within the applicable building or fire codes render this Limited Warranty and any responsibility or obligations associated therein null and void. This includes any damage, costs or legal actions resulting from the installation of any Merrychef commercial cooking equipment in a noncommercial application or installation, where the equipment is being used for applications other than those approved for by Merrychef.

• If any product is cleaned without using an approved Merrychef cleaning solution, this Limited Warranty shall be voided.

LIMITATIONS OF LIABILITY

The preceding paragraphs set forth the exclusive remedy for all claims based on failure of, or defect in, products or services sold hereunder, whether the failure or defect arises before or during the warranty period, and whether a claim, however instituted, is based on contract, indemnity, warranty, tort (including negligence), strict liability, implied by statute, common-law or otherwise, and Merrychef its servants and agents shall not be liable for any claims for personal injuries or consequential damages or loss, howsoever caused. Upon the expiration of the warranty period, all such liability shall terminate. THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN LEIU OF ALL OTHER WARRANTIES, WHETHER WRITTEN, ORAL, IMPLIED OR STATUTORY. NO IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE SHALL APPLY, MERRYCHEF DOES NOT WARRANT ANY PRODUCTS OR SERVICES OF OTHERS.

REMEDIES

The liability of Merrychef for breach of any warranty obligation hereunder is limited to: (i) the repair or replacement of the equipment on which the liability is based, or with respect to services, re-performance of the services; or (ii) at Merrychef’s option, the refund of the amount paid for said equipment or services. Any breach by Merrychef with respect to any item or unit of equipment or services shall be deemed a breach with respect to that item or unit or service only.

WARRANTY CLAIM PROCEDURE

Customer shall be responsible to:

• Immediately advise the Dealer or Merrychef’s Authorized Service Agent of the equipment serial number and the nature of the problem.

• Verify the problem is a factory responsibility. Improper installation or misuse of equipment, are not covered under this Limited Warranty.

• Cooperate with the Service Agency so that warranty service may be completed during normal working hours.

GOVERNING LAW

For equipment, products and services sold in the United States this Limited Warranty shall be governed by the laws of the state of Delaware, USA, excluding their conflicts of law principles. The United Nations Convention on Contracts for the International Sale of Goods is hereby excluded in its entirety from application to this Limited Warranty.

Merrychef USA 1333 EAST 179 Cleveland OH 44110

Street

Part Number: MCU_SM_0000 2/15

Page 60

1333 EAST 179

STREET CLEVELAND OH 44110

MERRYCHEF

877-404-6872

WWW.MERRYCHEFUSA.COM

Every new piece of Manitowoc Foodservice equipment comes with KitchenCare™ and you choose the level of service that meets your operational needs from one restaurant to multiple locations.

– Warranty & lifetime service, certified OEM parts, global parts inventory, performance audited

StarCare

ExtraCare

LifeCare

Talk with KitchenCare™

– CareCode, 24/7 Support, online/mobile product information

– Install & equipment orientation, planned maintenance, KitchenConnect™, MenuConnect

- 1-844-724-CARE - www.mtwkitchencare.com

To learn how Manitowoc Foodservice and its leading brands can equip you, visit our global web site at www.manitowocfoodservice.com, then discover the regional or local resources available to you.

©2015 Manitowoc Foodservice except where explicitly stated otherwise. All rights reserved. Continuing product improvement may necessitate change of specifications without notice. Part Number MCU_SM_0000 2/15

Part Number: MCU_SM_0000 2/15

Merrychef EIKON E2 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual