TurboChef ENCORE 2 Service Manual

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Service Manual

   TM   TM   

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For further information, call

800.90

TURBO

+1 214.379.6000

The information contained in this manual is important for the proper installation, use, maintenance, and repair of this oven. Follow these procedures and instructions to help ensure satisfactory baking results and years of trouble-free service.

Errors – descriptive, typographic, or pictorial – are subject to correction. Specifications are subject to change without notice.

Please carefully read this manual and retain it for future reference.

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Table of Contents

Important Safety Instructions

General Safety Information i Reducing Fire Risk i Grounding Instructions ii Power Cord Replacement ii Precautions to be Observed Before and During Servicing to Avoid Possible Exposure to Excessive Microwave Energy ii RF Interference Considerations ii

Specifications and Installation

Theory of Operation 1 Dimensions 1 Certifications 2 Oven Construction 2 Electrical Specifications 2 Installation 2 Unpacking Instructions 2 Installation Warnings - Read Before Lifting Oven 2 Installing the Oven 3 Installation Near Open Heat Source 3 Oven Restraint Kit 4 ChefComm Pro® 4 ChefComm Limited Oven Connect Voltage Selection 4 Ventilation 4

Oven Maintenance

Daily Maintenance 5 Quarterly Maintenance 7

Oven Controls and Cooking

Oven Controls 9 Cooking 10

Info Mode

Last Temperature Selected 13 Serial Number 13 Menu Version 13 Firmware Version 13 Cook Counters/Time Logs 13 Voltage - View Incoming 13 Fault Log 13 Service Numbers 13 Test Mode 13

Continued on next page...

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Set Options 13 Cook More / 13 Edit Mode / 13 Load Menu / 14 Network Setup 14 Auto Off / 14 Auto On / 14 Demo Mode / 14 Light Ring / Set Date and Time 14 Load Menu from USB or Smart Card 15 Save Menu to USB or Smart Card 15 Sound Volume 15 Electrical Temperature 15 Reset the Oven 15 Firmware Update 16

Edit Mode

Set Temperature Edit 17 Baking Stone Use YES/NO 17 Bottom Temperature Offset 17 Select Groups and Items to Edit 17 Recipe Edit 18

Test Mode

Status Indicators 19 Magnetron Test 19 Blower Motor Test 19 Top Heater Test 20 Bottom Heater Test 20 Electrical Compartment (Ctl) Fan Test 20 Diagnostic Mode 20 Manufacturing Mode 20 Microwave Leakage Test 21 Burn in 21 Serial Number Edit 21 Self Test 21 Volt On 22 Erase/Default Oven Settings 22 Changing Temperature Measurement: F or C 22

Oven Systems

Impingement System 23 Blower Motor 23 Blower Motor Speed Controller (BMSC) 23 Heater - Top 23 Heater - Bottom 23 High Limit Thermostat 23 Jetplate - Bottom 23 RTD - Top and Bottom 23 Solid State Relay - K4/K5 Heaters 23 Troubleshooting 23

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Oven Door 24 Removing/Reinstalling the Oven Door 24 Adjusting the Oven Door 24 Interlock Switches 25 Relay - K3 Monitor 25 Adjusting the Primary, Secondary, and Monitor Switches 25 Measuring RF Leakage for Microwave Safety 26 Troubleshooting 26 Microwave System 27 Capacitors 27 Testing a Capacitor 27 Filament Transformers 27 Wiring the Filament Transformers 27 High-Voltage Transformers 28 Wiring the High-Voltage Transformers 28 Testing a Filament or High-Voltage Transformer 28 High-Voltage Diodes 28 Testing a High-Voltage Diode 29 Magnetrons 29 Magnetron Cooling Fans 29 Magnetron Thermostats 30 Testing a Magnetron for an Open/Shorted Filament 30 Relay - K1 Filament 30 Relay - K2 Anode 30 Relay - K7 Encore: Magnetron Cooling Fans / Encore 2: All Cooling Fans 30 Waveguides 30 Troubleshooting 30 Control System 31 Control Board 31 Display 31 Ethernet Extension Cable 31 Keypad 31 LED Light Ring 31 Speaker 31 USB/Smart Card Reader 31 Troubleshooting 31 Power Components 32 Electrical Compartment Cooling Fan 32 Electrical Compartment Thermostat 32 Electrical Compartment Thermocouple 32 EMI Filter 32 Fuses 32 Power Supply 32 Relay - K6 Voltage 32 Relay - K7 Encore: Magnetron Cooling Fans / Encore 2: All Cooling Fans 32 Relay - K8 EC Cooling Fan 32 Voltage Sensor 32 Wire Harnesses 32 Troubleshooting 33

Continued on next page...

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Filtering System 34 Catalytic Converter 34 Air Filter 34 Vent Catalyst 34 Troubleshooting 34

Troubleshooting

Overview of Troubleshooting 35 Fault Code Descriptions 35 F1 Blower Running Status Bad 37 F2 Cook Temperature Low 38 F3 Magnetron Current Low 39 F4 Door Monitor Defective 40 F5 Magnetron Over Temperature 40 F6 Electrical Compartment Temperature High 41 F7 RTD Open 41 F8 Heat Low 42 F9 Cook Cavity Temperature High 42 No Keypad Input 43 “Cook Door Open” Message when Door is Closed 43 No Display (Screen is Blank) 44

Food Not Cooking Properly 45

Troubleshooting: “Failed 240,” “No Card,” or “Write Fail” Message when Loading or Saving a Menu 46 Steam Present During or After Cooking 46

Encore Oven Schematic and Wire Harnesses

Relay Schematic 47 Oven Schematic 48 Wire Harness: HV Microwave Circuit 1 50 Wire Harness: HV Microwave Circuit 2 50 Wire Harness: Low Voltage 52 Wire Harness: Heater 52 Wire Harness: Cooling Fans 54 Wire Harness: Main Line Voltage 56-59

Encore 2 Oven Schematic and Wire Harnesses

Relay Schematic 61 Oven Schematic 62 Wire Harness: Heater 64 Wire Harness: HV Microwave Circuit 1 66 Wire Harness: HV Microwave Circuit 2 66 Wire Harness: Low Voltage 66 Wire Harness: Main Line Voltage 68-71 Wire Harness: Cooling Fans 72

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Encore Appendix - Replacing Oven Components

Replacing Oven Components A-1 Oven Exterior A-2 Impingement System A-4 Microwave System A-6 Oven Door and Related Parts A-8 Control System A-10 Power Components A-12 – A-15

Encore 2 Appendix - Replacing Oven Components

Replacing Oven Components A-17 Oven Exterior A-18 Impingement System A-20 Microwave System A-22 Oven Door and Related Parts A-24 Control System A-26 Power Components A-28 – A-31

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IMPORTANT SAFETY INSTRUCTIONS

WARNING: When operating this oven, strictly adhere to the following safety precautions to reduce the risk of burns, electric shock, fire, injury, damage to oven or property near oven, or possible exposure to excessive microwave energy.

GENERAL SAFETY INFORMATION

a

Read all instructions before using this appliance.

a

Read and follow the specific “Precautions to be Observed to Avoid Possible Exposure to Excessive

Microwave Energy” found on page ii.

a

This appliance must be grounded. Connect only to a properly grounded outlet. See “Grounding

Instructions” on page ii.

a

Install or locate this appliance only in accordance with the provided installation instructions.

a

This appliance should be serviced by qualified service personnel only. Contact the nearest authorized

service facility for examination, repair, or adjustment.

a

Keep the cord away from heated surfaces.

a

Liquids, such as water, coffee, or tea are able to be overheated beyond the boiling point without appearing to be boiling. Visible bubbling or boiling when the container is removed from the microwave oven is not always present.                       .

a

: The contents of feeding bottles and baby food jars must be stirred or shaken and the temperature checked before consumption, in order to avoid burns (IEC 60335-2-90).

a

Use this appliance only for its intended uses as described in this manual.

a

Only use utensils that are suitable for use in microwave ovens (IEC 60335-2-90).

  use corrosive chemicals or vapors in this appliance; it is not designed for industrial/laboratory use.

:   heat liquids or other foods in sealed containers (e.g., jars, whole eggs, etc.) since they are liable to explode.

  allow children to use this appliance.

  operate this appliance if it has a damaged cord or plug, is not working properly, or has been damaged or dropped. See “Power Cord Replacement” found on page ii.

  cover or block any openings on this appliance.

  store this appliance outdoors.

  use this product near water (e.g., near a kitchen sink, in a wet basement, near a swimming pool).

  immerse the cord or plug in water.

  let the cord hang over the edge of a table or counter.

  use a water jet for cleaning. See pages 5-7 in this manual for proper cleaning procedures.

  use this product without the bottom jetplate installed. The oven will not cook properly and damage to the oven may occur.

This appliance is not to be used by children or persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction.

REDUCING FIRE RISK

a

Remove wire twist-ties from paper or plastic bags used to facilitate cooking in the oven.

a

If materials inside the oven ignite, keep the oven door closed, turn the oven off, and disconnect the power cord or shut off power at the fuse or circuit breaker panel.

a

If smoke is observed, switch off or unplug the oven. Keep the door closed to stifle any flames.

  use the cook cavity for storage purposes.

  overcook food. Carefully attend to the oven if paper, plastic, or other combustible materials are placed inside the oven to facilitate cooking.

  leave paper products, cooking utensils, or food in the cavity when the oven is not in use.

SAVE THESE INSTRUCTIONS

SAFETY INSTRUCTIONS

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ii SAFETY INSTRUCTIONS

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 oven is equipped with a cord that has a grounding wire with a grounding plug, which must be plugged into an outlet that is properly installed and grounded. Consult a qualified electrician or serviceman if uncertain about the ability to follow grounding instructions or if in doubt as to whether the appliance is properly grounded.

  use an extension cord. If the power cord is too short, have a qualified electrician or serviceman install an outlet near the appliance.

WARNING: Improper grounding can result in risk of electric shock.

POWER CORD REPLACEMENT

If the power cord is damaged, it must be replaced by the manufacturer, its service agent, or a similarly qualified person.

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY

(a) Do not operate or allow the oven to be operated with the door open. (b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other microwave source, and make repairs as necessary: (1) interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse. (c) 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. (d) 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. (e) A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner. Refer to page 26 for leakage test procedures.

RF INTERFERENCE CONSIDERATIONS

The oven generates radio frequency signals. This device has been tested and was determined to be in compliance with applicable portions of FCC part 18 requirements and to the protection requirements of Council Directive 89/336/EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility at the time of manufacture. However, some equipment with sensitivity to signals below these limits may experience interference.

If your equipment experiences interference:

a

Increase the physical separation between this oven and the sensitive equipment.

a

If the sensitive device can be grounded, do so following accepted grounding practices.

a

If battery-powered microphones are being affected, ensure that the batteries are fully charged.

a

Keep sensitive equipment on separate electrical circuits if possible.

a

Route intercom wires, microphone wires, speaker cables, etc. away from the oven.

SAVE THESE INSTRUCTIONS

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Specifications and

Installation

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Encore Depth

Encore Oven Dimensions Encore 2 Oven Dimensions

21.4” (544 mm)

19”

(483 mm)

23”

(584 mm)

32.7” (831 mm)

30.2” (767 mm)

28.6” (726 mm)

Figure 1: Encore and Encore 2 Oven Dimensions

Theory of Operation

The TurboChef Encore/Encore 2 oven uses radiant heat in combination with high-speed air impingement and side-launched microwave to cook food rapidly without compromising quality. Performance and menu versatility are maximized due to flexible top and bottom temperature settings and the ability to set the amount of microwave and air in different phases of each recipe.

This manual includes instructions for installing, cleaning, and operating the oven. If you have questions that are not addressed in this manual, contact Customer Support at

800.90TURBO (USA) or +1 214.379.6000 (International), or your Authorized Distributor.

21.4” (544 mm)

19”

(483 mm)

23”

(584 mm)

29.95” (761 mm)

27.45” (697 mm)

25.85” (657 mm)

Dimensions

Oven Dimensions

Height - Single Oven with legs: 23” (584 mm) without legs: 19” (483 mm) Height - Stacked Ovens lower oven with legs: 42” (1,067 mm) lower oven without legs: 38” (965 mm) Width: 21.4” (544 mm) Depth (Encore) footprint: 28.6” (726 mm) door closed: 32.7” (831 mm) door open: 39.4” (1,000 mm) Depth (Encore 2) footprint: 25.85” (657 mm) door closed: 29.95” (761 mm) door open: 36.31” (922 mm) Weight: 185 lb. (84 kg)

SPECIFICATIONS AND INSTALLATION

Cook Cavity Dimensions

Height: 6.0” (152 mm) Width: 15.5” (394 mm) Depth: 14.5” (368 mm)

Volume: 0.78 ft

(22.1 liters)

Clearances

Top: 5” (127 mm) Sides: 2” (51 mm)

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2 SPECIFICATIONS AND INSTALLATION

Certifications

cULus, UL EPH, TÜV, CE, FDA

Oven Construction

Exterior

- Powder coated, corrosion-resistant steel outer wrap

- Powder-coated aluminum steel front panels and door

- Cool-to-touch exterior; all surfaces below 122°F (50°C)

- Ergonomic door handle

Interior

- 201 stainless steel

- Fully welded and insulated cook chamber

- Removable rack and lower jetplate for cleaning

Electrical Specifications

Installation

Install or locate this appliance only in accordance with the instructions below.

Unpacking Instructions

1. Remove the oven from its packaging.

2. Before throwing the packaging away, check it thoroughly for accessories and literature.

NOTE: Keeping the packaging is recommended in case the oven may be shipped to another location.

3. Check the cook cavity thoroughly for packaging, accessories, and literature.

4. Discard any packaging in the cook cavity.

Installation Warnings - Read Before Lifting Oven

WARNING: The oven weighs approximately 185 lb. (84 kg). Never lift with fewer than two people.

WARNING: Never lift the oven by the door handle. Doing so will cause the door to mis align, resulting in a non-warranty service call.

TurboChef recommends a Type D circuit breaker for all installations outside the United States.

Single Phase (6200 watts)

US/Canada: 208/240 VAC*, 60 Hz, 30 A Europe/Asia (UK): 230 VAC, 50 Hz, 30 A Brazil (BK): 220 VAC, 60 Hz, 30 A Latin America (LA): 220 VAC, 60 Hz, 30 A Japan (JK): 200 VAC, 50 or 60 Hz, 30 A

Multiphase (6200 watts)

Europe/Asia Wye (EW): 400 VAC, 50 Hz, 16 A Europe/Asia Delta (ED): 230 VAC, 50 Hz, 30 A Japan Delta (JD): 200 VAC, 50 or 60 Hz, 30 A Korea/Middle East Wye (KW): 400 VAC, 60 Hz, 16 A Korea/Middle East Delta (SD): 230 VAC, 60 Hz, 30 A

* US/Canada models include a voltage sensor that detects 208 or 240 VAC, but does not compensate for lack-of or over-voltage installations.

WARNING: The oven must be properly placed on a food station at all times. TurboChef will not recognize a fallen oven as a warrantable claim and is not liable for any injuries that may result.

WARNING: This oven is not intended for built-in installation (i.e., installing the oven in any structure that surrounds the oven by five or more sides). Be sure to provide a minimum of 2” (51 mm) clearance for all sides and 5” (127 mm) clearance for the top.

WARNING: This oven is not intended to be stacked without appropriate hardware. Contact TurboChef for details.

WARNING: Never stack ovens more than two high.

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Installing the Oven

1. Prepare a surface capable of supporting 190 lb. (86 kg) or 380 lb. (172 kg) if stacking. The surface must be this deep:

 • Encore:30.2”(767mm)  • Encore2:27.45”(697mm)

2. If installing onto an oven cart: a. Ensure the oven cart casters are locked. b. Ensure the oven legs are removed. c. Drilling additional holes in the counter surface/cart for stability is required if the existing holes in the cart/surface do not align with the leg holes of the oven. For details, contact customer support at

800.90TURBO or +1 214.379.6000.

3. Position one or more persons at the front and back of the oven.

4. Place hands under the oven and lift.

5. Place the oven on the prepared surface, ensuring no edges are hanging off the sides.

6. If stacking two ovens: a. See page 1 for dimensions. b. Install the stacking bracket (part number ENC-3001) to the lower oven.

NOTE: If stacking an Encore and Encore 2, the Encore oven must be placed on the bottom.

c. Place the upper oven on top of the lower oven. d. Secure the bracket to the top oven.

7. Ensure the oven rack is properly installed (attached to the bottom jetplate).

8. Plug in the oven.

NOTE: The oven is primarily serviced through its sides and top. Shelving installed directly over the unit may delay servicing. The owner will be responsible for paying service costs for added time spent clearing access to the oven.

Installation Near Open Heat Source

When placing a TurboChef oven near an open heat source (Figure 2 below), strictly adhere to the following:

- If the oven is being placed near a grill or stove, a divider must exist between the oven and the open heat source, with a minimum of 6” (152 mm) between the oven and the divider.

- If the oven is being placed near a fryer, a divider must exist between the oven and fryer, with a minimum of 12” (305 mm) between the oven and the divider.

- The height of the divider must be greater than or equal to the height of the oven (see page 1).

- Verify the oven location has a minimum 5” (127 mm) clearance on top and a minimum 2” (51 mm) clearance on each side.

Figure 2: Installation Near Open Heat Source

SPECIFICATIONS AND INSTALLATION

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4 SPECIFICATIONS AND INSTALLATION

Oven Restraint Kit

Part Number: TC3-0242

WARNING: The Oven Restraint Kit will not prevent the oven from falling off a countertop if the oven is pulled off or allowed to slide off the edge. Installation instructions are included with the kit.

ChefComm Pro®

Part Number: CON-7006

ChefComm Pro® lets you easily create menu settings on a computer and upload them to an oven via smart card or USB. For more information, call TurboChef Customer Support at 800.90TURBO or +1 214.379.6000.

ChefComm Limited™

Part Number: CON-7016

ChefComm Limited version of ChefComm Pro® that helps ensure menu settings are easy to distribute, while preventing them from being changed at the store level.

is a “read-and-upload only”

Oven Connect™

Oven ConnectTM allows you to update menu settings for multiple ovens at once, from one central location via LAN. Oven ConnectTM can also download oven diagnostics and counters from the oven to your computer. For more information on how to network ovens, see page 14. For information on Oven Connect, contact TurboChef Customer Support at 800.90TURBO or +1 214.379.6000.

Voltage Selection

For North America oven models, the oven will detect 208 or 240 incoming voltage.

If incoming voltage for the store is different than the factory-preset voltage, the operator will be required to select either 208 or 240 after pressing the On/Off key to turn on the oven. The correct voltage will be enlarged on the screen, identifying which option to select (see below).

Figure 3: Select Voltage

Ventilation

The TurboChef Encore/Encore 2 oven has been approved by Underwriter’s Laboratory® for ventless operation (UL 710B, KNLZ listing) for all food items except for foods classified as “fatty raw proteins.” Such foods include bone-in, skin-on chicken, raw hamburger meat, raw bacon, raw sausage, steaks, etc. If cooking these types of foods, consult local HVAC codes and authorities to ensure compliance with ventilation requirements.

NOTE: In no event shall the manufacturer assume any liability for damages or injuries resulting from installations which are not in compliance with the instructions and codes previously listed.

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Daily and Quarterly

Maintenance

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Daily Maintenance

Follow the steps below when cleaning your oven. Use only TurboChef®-approved cleaning chemicals. Failure to adhere to these procedures or the use of any other cleaning products may damage critical oven components, resulting in a non-warranty service call.

Step 1: Cool the Oven

WARNING: e oven operates at approximately 500°F (260°C) and may cause injury if not allowed to cool properly.

•Turn o the oven by pressing the On/O key.

•Slightly open the oven door.

Step 1

Tab Location

Step 2

•Cooling takes approximately 30 minutes. DO NOT proceed to Step 2 until the oven displays “ready to clean.”

Step 2: Clean the Wire Rack

•ewirerackisheldinplacebytabsthatarepositionedunderneatheitherside

of the jetplate.

•Lifttherearofthewirerack.

•Pullthewirerackforwarduntilthetabsarefree.

•Wash,rinse,sanitize,anddrythewirerack.

Supplies and Equipment

TurboChef® Oven Cleaner (Product Number: 103180), TurboChef® Oven Guard (Product Number: 103181), Kay ClickSan® sanitizer, nylon scrub pad, clean damp and dry towels, disposable gloves, protective eyewear, dust mask (optional)

Step 3

Step 4

Step 5

Step 3: Clean the Jetplate

•Liftthefrontofthejetplate.

•Pullthejetplateforwardandremoveitfromtheoven.

CAUTION: Handle the jetplate with care to avoid chipping the porcelain coating.

•Wash,rinse,sanitize,anddrythejetplate.

DO NOT clean the jetplate with a wire brush.

Step 4: Clean the Cavity Filter (if present)

e lter must remain in place during oven operation, and it must be cleaned regularly or replaced if damaged.

•Removethecavitylterfromthebackcavitywallbyliftingthetabandpullingthe

lter towards you.

•Rinsethelterwithhotwater.

•Allowtheltertodrycompletely.

DO NOT scrub or pull apart the mesh in the lter frame.

Step 5: Clean the Air Filter

e lter must remain in place during oven operation, and it must be cleaned regularly or replaced if damaged.

•Removetheairlterfromthebackoftheoven.

•Rinsetheairlterwithhotwater.

•Allowtheairltertodrycompletely.

DAILY MAINTENANCE

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6 DAILY MAINTENANCE

Step 6: Remove Large Food Particles

•eheatingelementcanbeliftedforcleaningunderneath.

DO NOT attempt to clean the heating element.

•Useafoodvacuumordamptoweltoremovelargeparticles from the oven cavity.

Step 6

Step 7

Step 8

Step 9

Step 7: Clean the Oven Cavity

DO NOT spray TurboChef ® Oven Cleaner into the holes in the oven cavity.

•ApplyOvenCleanertoatowelornylonscrubpadandcleanthetop,sides,and

bottom of the cavity.

DO NOT apply excessive pressure to the waveguide covers (A), located on each side of the cavity.

•Forstubbornstains,sparinglysprayOvenCleaneronthestain.

•AllowtheOvenCleanertopenetratethestainforveminutes,thenwipeclean.

DO NOT use a hose or water jet for cleaning.

Step 8: Wipe Down the Oven Cavity

•Wipedowntheovencavitywithadamptowel.

•Drytheovencavitywithadrytowel.

Step 9: Clean and Dry the Oven Door

•CleantheovendoorwithOvenCleanerandanylonscrubpad.

•Wipetheovendoorwithadamptowel.

•Drytheovendoorwithadrytowel.

Step 10: Apply TurboChef ® Oven Guard

•SprayTurboChef®OvenGuardontoadrytowel.

•Wipethecavitywallsandtheinsideoftheovendoor.

DO NOT spray Oven Guard into the oven or apply to the heating element.

Step 10

Step 11

Step 12

Step 11: Reinstall Components

•Reinstallthecavitylter(ifpresent).Besuretoalignthetop-leftpostonthe 

back of the lter with the top-left hole on the back cavity wall. is will ensure the other posts on the back of the lter t into the wall.

•Reinstallthejetplateandthewirerack.

DO NOT operate the oven without the bottom jetplate installed. Doing so may damage the oven.

•Closetheovendoor.

•Reinstallthelter,orreplaceitwithanewoneifthemeshisdeteriorated,has 

large openings, or has started to dislodge from the frame.

Step 12: Clean the Oven Exterior

•Wipetheovenexteriorwithadamptowel.

•Removethepanelbeneaththedoor,removeanylargefoodparticlesfromthepanel,

and wipe it with a damp towel.

•Reinstallthepanelbeneaththedoor.

DO NOT spray chemicals into any openings, such as the louvers on the side panels or the rear vent catalyst housing.

•eovenisreadytoturnon.

Page 21

Quarterly Maintenance

To ensure optimal oven performance, complete the following cleaning steps once per quarter or more frequently as required.

1. Complete the daily cleaning instructions (pages 5-6).

CAUTION: Make sure the oven is o before proceeding.

2. Remove the air lter.

Supplies and Equipment

Required: Phillips screwdriver, clean towels, rubber gloves for handling catalytic converter Recommended: dust mask, vacuum, bristle or paint brush

6. e catalytic converter is accordion style and will pop out when the cover is removed. Remove the cover slowly to keep the catalytic converter in place.

CAUTION: DO NOT attempt to clean the catalytic converter or spray chemicals in this area.

7. Clean the housing:

- Hold the catalytic converter in place with one hand.

- Using a clean towel, wipe out any debris that has accumulated beneath the catalytic converter.

- Clean the outer cover and make sure the vent holes are not blocked.

3. Clean the cooling fans and nger guards.

NOTE: A bristle or paint brush and vacuum are recommended for collecting the debris.

4. Clean the louvers on both side panels.

NOTE: A bristle or paint brush and vacuum are recommended for collecting the debris.

5. Using a Phillips screwdriver, remove the screws from the rear vent catalyst housing. Support the cover with your hand.

8. Reattach the outer cover, making sure the vent holes are at the bottom.

CAUTION: Installing the outer cover upside down could result in excessive grease buildup and/or hot steam present when the oven door is opened.

9. Wipe down the back panel with a clean, damp towel.

QUARTERLY MAINTENANCE

10. Reinstall the air lter. e oven is ready to turn on.

Page 22

8 QUARTERLY MAINTENANCE

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Page 23

Oven Controls

and Cooking

Page 24

Page 25

Figure 4: Oven Controls

Oven Controls

1. On/Off Key

Press to turn the oven on (begin warmup) or off (cool down), or to exit Info Mode (page 13).

2. “i” Key

When the oven is off or cooling down, press to access the Info Mode (page 13).

3. Up and Down Keys

When the oven is ready to cook (i.e., warmed up and waiting for a cook command), press the Up or Down key to view additional food groups or items.

When the oven is in the Info Mode (page 13), press to switch between screens 1 and 2.

6. Enter Key

Press the Enter key when saving changes to food item settings (page 18), or whenever instructed by the oven screen.

7. Soft Keys

There are eight soft keys - four to the left and right of the display. Press a soft key to select an option adjacent to that key on the display.

8. Numeric Keypad

Use the numeric keypad to enter passwords or modify cook settings (page 18). The numeric keypad also contains a Back/Stop key and an Enter key, which are functionally identical to Items 5 and 6.

When editing a food item, press to move the cursor between editable fields (page 18).

4. Display

The display shows information relevant to the current oven operation and/or user options.

5. Back/Stop Key

When the oven is cooking, press the Back/Stop key to immediately terminate a cook cycle.

When the oven is ready to cook (i.e., warmed up and waiting for a cook command), or in the Info Mode (page 13), press the Back/Stop key to return to the previous screen.

9. Brown More Key

Press “Brown More” if the outside of the food item requires browning or crisping. See page 11, step 8 for details.

OVEN CONTROLS AND COOKING

10. Cook More Key

Press “Cook More” if the inside of the food item requires cooking. See page 11, step 8 for details.

11. Cook & Brown Key

Press “Cook & Brown” if both the inside and outside of the food item require cooking. See page 11, step 8 for details.

Page 26

10 OVEN CONTROLS AND COOKING

Cooking

The oven is preprogrammed with recipe settings at the time of manufacture and is ready to operate out of the box. New menu settings can be loaded via USB or smart card (page 15) or programmed manually (page 17). The oven will not cook unless settings are present.

This oven uses impingement and microwave to cook food faster than traditional cooking methods. Air enters the cavity from the top and bottom using a single fan. Because of this design and to ensure uniformity of cooking, the oven must be operated only while the bottom jetplate is in place. While the bottom jetplate is removable for cleaning, it is not removable for cooking. Without the bottom jetplate in place, the oven will not deliver the proper cooking performance to either the top or bottom of the food item. Additionally, oven damage may result.

The sequence of the steps below may vary, and some may not apply.

Step 1: Turn the Oven On

Step 2: Select Cook Temperature

NOTE: The top temperature will allow you to cook items found in groups 1-8. The bottom temperature will allow you to cook items found in groups 9-16. If the temperatures are the same, this screen will be bypassed and access to all food items will be allowed.

Step 3: Warming Up

NOTE: When the oven is done warming up, it will “soak” for an additional eight minutes. “Soaking” ensures the cavity surfaces absorb enough heat so that cooking will not be affected. While the oven is soaking, the menu can be seen, but cooking will not be allowed until the timer reaches 0:00.

Step 4: Place Food in the Oven

WARNING: Inside of oven and oven door are hot!

Page 27

Step 5: Cook the Item

NOTE: Press Up or Down to view more groups (only available if all items have the same set temperature) or food items.

Step 6: Cooking

NOTE: To immediately terminate a cook cycle, press the Back/Stop key.

NOTE: If the oven door is opened during a cook cycle, the cycle will pause until the door is closed and ENTER is pressed to resume.

Step 7: Check/Remove Food from Oven

WARNING: Dish/inside of oven and door are hot!

Step 8: Brown More / Cook More / Cook & Brown

To cook an item longer than its original cook time, use one of the three keys on the left side of the keypad:

- Press “Brown More” if the outside of the food item requires browning or crisping.

- Press “Cook More” if the inside of the food item requires cooking.

- Press “Cook & Brown” if both the inside and outside of the food item require cooking.

Pressing one of these keys will cook the item for 20% of the last cook time selected. The minimum cook time is the less of 15 seconds or the entire original cook cyle. The maximum is one minute. The oven will cook at the settings listed below:

- Brown More: 100% air, 0% microwave

- Cook More: 10% air, 100% microwave

- Cook & Brown: 100% air, 100% microwave

Each additional key press while the oven is cooking adds 15 seconds of cook time to the “brown more,” “cook more,” or “cook & brown more” cycle, up to a maximum of five minutes.

NOTE: If a cook more option is selected, the oven will beep when the timer reaches zero, but no message will be displayed.

OVEN CONTROLS AND COOKING

Step 9: Cooling Down

When finished cooking for the day, press the On/Off key to turn the oven off and begin cooling down.

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12 OVEN CONTROLS AND COOKING

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Page 29

Info Mode

and Edit Mode

Page 30

Page 31

Info Mode

To access the Info Mode, press the “i” key when the oven is off or cooling down. There are two Info Mode screens – press the Up or Down key to switch between them.

Figure 5: Info 1 Screen

Figure 6: Info 2 Screen

Voltage - View Incoming

Incoming voltage is shown on the Info 1 screen (Figure 5).

Fault Log

From the Info 1 screen (Figure 5), select “Fault Log” to view fault counters for faults F1 through F8. To view F9 fault detail, press the Down key. To view time stamps of each fault occurrence, press the soft key adjacent to the fault code.

Service Numbers

From the Info 1 screen (Figure 5), select “Service Numbers” to view TurboChef contact information.

Test Mode

From the Info 2 screen, select “Test Mode” (see page 19) to test oven components. This mode should only be used by qualified service technicians, unless otherwise instructed by TurboChef.

Last Temperature Selected

From the Info 1 screen (Figure 5), the last temperature set point selected to cook is displayed in the top-left corner of the screen (SP=).

Serial Number

The oven serial number is shown on the Info 1 screen (Figure 5).

Menu Version

The oven menu version is shown on the Info 1 screen (Figure 5).

Firmware Version

The oven firmware version is shown on the Info 1 screen (Figure 5).

Cook Counter/Time Logs

From the Info 1 screen (Figure 5), press the key adjacent to “Counts Scroll”:

- Once to display the cook counter.

- Twice to display total cook time.

- Three times to display total magnetron time.

- Four times to display total “oven on” time.

Set Options

From the Info 2 screen (Figure 6), select “Set Options” to access the Options screen (Figure 7). When prompted, enter the password 9 4 2 8 and press the Enter key.

Figure 7: Set Options Screen

Cook More ON/OFF:

Figure 7. The Cook More option controls whether or not the three “cook more” keys function. This option must be enabled in order to cook an item beyond its original cook time (see page 11).

Edit Mode ON/OFF:

Figure 7. The Edit Mode allows the operator to change cook settings for each item, including item and group names. See page 17 for more details. Turning “Edit Mode” off will prevent the operator from changing menu settings.

INFO MODE

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14 INFO MODE

Load Menu ON/OFF:

Figure 7, page 13. The Load Menu screen allows the operator to upload and/or download new menu settings from a USB drive or smart card. Turning “Load Menu” off will prevent access to the Load Menu screen when the operator is viewing the Info 2 screen. See page 15 for more details.

Network Setup:

Figure 7, page 13. Using Oven Connect (page 4) requires each oven to be networked. For help determining the correct network setup information, contact your network administrator.

From the network setup screen (Figure 8), the following information must be entered to configure the oven for networking:

- IP Address

- Mask

- Gateway (GW)

- Domain Name Server (DNS 1)

- Alternate Domain Name Server (DNS 2)

Auto On - ON/OFF:

Figure 7, page 13. “Auto On” is a feature that turns the oven on automatically at a specific time of day. To set the “Auto On” time, see “Set Date/Time,” below.

Demo Mode ON/OFF:

Figure 7, page 13. Demo Mode is a feature used to demonstrate the cooking features of the oven without turning on the heaters or microwave system. Demo Mode must remain off during regular operation.

Light Ring ON/OFF:

The light ring provides visual cues in regards to oven operation and how much cook time is remaining. To turn the light ring on or off, press the Down key from the Options screen and set the light ring as needed.

Set Date/Time

From the Info 2 screen (Figure 6, page 13), select “Set Date/Time” to set:

- Date and time of day

- Auto-on time

- Auto-off time

Figure 8: Network Settings Screen

Each number set can be edited in three-digit strings:

1. To edit the first string, press the Down key and then type in the first three digits.

2. Press the Down key again and enter the next three digits.

3. Repeat until all digits have been entered for each field.

4. Press “Save.”

If DHCP is turned on (top-left corner of screen), the oven will automatically be assigned an IP address when connected to a local area network (if an IP address is available). In most cases, TurboChef recommends leaving DHCP off to ensure the IP address on the oven does not change.

Auto Off - ON/OFF:

Figure 7, page 13. “Auto Off” is a feature that turns the oven off automatically at a specific time of day. To set the “Auto Off” time, see “Set Date/Time,” adjacent.

An accurate date and time of day are critical for using “auto-on” and “auto-off” (see above for details). They also help ensure the accuracy of diagnostics and fault condition reporting.

NOTE: The clock will not automatically update for Daylight Savings Time.

Figure 9: Set Date, Time, and Auto-On/Auto-Off Time Screen

NOTE: The clock is 24-hour (8:30 p.m. = 20:30).

NOTE: The oven will not retain the date and time if left unplugged for two or more weeks.

To set the date and time of day (Figure 9),

1. Use the keys to the left and right of the “date/time of day” field to move the cursor between digits.

2. Use the number keys to enter the month, day, and year, followed by the hour and minute.

3. Select “Save” to save your changes or press the Back/Stop key to cancel.

Page 33

To set the auto-on or auto-off time (Figure 9, page 14),

1. Ensure the time of day is entered accurately.

2. Press the top-right soft key to toggle between temperatures 1 and 2. If two different temperatures are used for cooking, they must be set to different auto-on and auto-off times.

3. Use the keys to the left and right of the “auto on time” field or “auto off time” field to move the cursor between digits.

4. Use the number keys to enter the hour and min ute for the oven to automatically turn on or off.

5. Select “Save” to save your changes or press the Back/Stop key to cancel.

Load Menu from USB or Smart Card

NOTE: To update the oven menu, you may need to verify that access to the Load Menu screen is turned on. See page 14, section “Load Menu ON/ OFF” for details.

NOTE: Loading a menu from or saving a menu to USB will take a few seconds longer than smart card.

To load a menu to the oven,

1. From the Info 2 screen (Figure 6, page 13), select “Load Menu.”

2. Insert the USB device or smart card (Figure 10).

Save Menu to USB or Smart Card

NOTE: To save a copy of the oven menu, you may need to verify that access to the Load Menu screen is turned on. See page 14, section “Load Menu ON/ OFF” for details.

To save a copy of the menu to a smart card,

1. From the Info 2 screen (Figure 6, page 13, select “Load Menu.”

2. Insert the USB device or smart card (Figure 10).

3. Save the menu (Figure 12): a. For USB, select “Save to USB.” b. For smart card, select “Save to Card.”

4. Verify the oven beeps and reads FINISHED.

Figure 12: Load Menu Screen: Save Menu Options

Sound Volume

From the Info 2 screen (Figure 6, page 13), select “Sound” to increase or decrease the oven sound volume.

Figure 10: Smart Card / USB Slot Location

3. Load the menu (Figure 11): a. For USB, select “Load from USB.” b. For smart card, select “Load from Card.”

4. Verify the oven beeps and reads FINISHED.

Figure 11: Load Menu Screen: Load Menu Options

Electrical Temperature

From the Info 2 screen (Figure 6, page 13 ), view the current temperature of the control board.

Reset the Oven

Resetting the oven is one way to clear an error message, should one occur. To reset the oven:

1. Return the oven to the cooling down or off screen. (Press the Back key if necessary.)

2. Hold the “i” key for 5 seconds.

INFO MODE

Page 34

16 INFO MODE

Firmware Update

TurboChef may at some point recommend a firmware update. The update will make sure your oven is operating at its maximum efficiency, but will not affect cooking performance or menu settings.

CAUTION: The oven will not turn on if the firmware update is unsuccessful!

From the Oven Off screen,

1. Insert the smart card “1 of 3” (Figure 13).

2. When the oven is cooling down or off, press and hold the “i” key until the oven resets (approximately 5 seconds).

3. The oven will produce a series of short beeps. When the oven beeps one long tone, insert card “2 of 3.”

4. The oven will again produce a series of short beeps. When the oven beeps one long tone, insert card “3 of 3.”

5. The oven will again produce a series of short beeps. When the oven beeps one long tone, remove the smart card.

6. The oven will restart, indicating the update is complete.

If the update fails, the display will remain off and the oven will beep one long, low tone.

1. Unplug the oven and insert the first smart card.

2. Plug the oven back in.

3. Repeat steps 3-6 (adjacent).

4. If unsuccessful, contact TurboChef.

Figure 13: Smart Card Slot Location

Page 35

Edit Mode

From Edit Mode, the operator can change menu settings and rename food groups and items.

To access the Edit Mode,

1. Enable it from the Options screen (Figure 7, page 13).

2. Press the On/Off key to return to the “Cooling Down” or “Off” screen.

3. Press the On/Off key again to enter Edit Mode.

In Edit Mode, editing can be performed on two screens. The first is explained on this page (Figure

14). It allows the operator to:

- Edit the set temperatures

- Select baking stone use

- Set the offset temperatures

- Select whether to edit temperature 1 food groups or temperature 2 food groups

The second screen is explained on page 18, and allows editing group and item names, as well as specific item settings.

Set Temperature Edit

The set temperature should never be changed to compensate for over-cooking or under-cooking. If recipe settings are not cooking as desired, consult your menu developer, authorized distributor, or TurboChef Customer Support.

To change a set temperature,

1. Place the oven in Edit Mode (see above).

2. Change the temperature: a. Select “TEMP 1” to change the temperature for groups 1-8 b. Select “TEMP 2” to change the temperature for groups 9-16 c. Using the number keys, enter the new set temperature. d. The temperature range is 300–540°F (149–282°C)

3. Press the Enter key to confirm the change, or the Back/Stop key to cancel.

Baking Stone Use YES/NO:

The “Stone” option on the Set Temperature screen should be set to:

- “Yes” if a baking stone is being used

- “No” if only a wire rack is being used

“Yes” increases the temperature of the bottom half of the oven for optimal cooking results when a stone is being used.

Bottom Temperature Offset

There are two Bottom Temperature Offset keys: one for each temperature. The bottom temperature offset keys allow the bottom heater to provide additional heat for increased browning.

To change a temperature offset,

1. Place the oven in Edit Mode (see adjacent).

2. Change the temperature offset: a. Select “Bottom temp 1 Offset” to change the temperature offset for groups 1-8. b. Select “Bottom temp 2 Offset” to change the temperature offset for groups 9-16. c. Using the number keys, enter the new temperature offset. d. The temperature range is 0-75°F (0-24°C).

3. Press the Enter key to confirm the change, or the Back/Stop key to cancel.

Select Groups and Items to Edit

Select “Edit temp 1 Groups” to edit recipe settings and/or group and item names for groups 1-8. Or, select “Edit temp 2 Groups” for groups 9-16. See page 18 for more information.

Figure 14: Edit Mode Screen 1: Temperature and Group Select

EDIT MODE

Page 36

18 EDIT MODE

Recipe Edit

Move cursor back and

forth between characters

Move cursor back and forth between fields

Figure 15: Edit Mode Screen 2: Recipe Edit

Set point (top heater actual : bottom heater actual)

Go to the “Recipe Edit” screen (Figure 15) to change the food group name, food item name, and/or cook settings.

1. Place the oven in Edit Mode (see page 17).

2. Select “EDIT temp 1 GROUPS” or “EDIT temp 2 GROUPS.”

3. Select the group that contains the item you want to edit.

4. Select the food item you want to edit.

5. Change the food group or food item name (Figure 15)

6. Change the cook settings (Figure 15): a. % Time can be set from 0-100% for each event. The sum of all events must be 100. b. % Air determines the amount of airflow. The more air, the more the product will

brown or crisp. % Air can be set from 10-100% in 10% increments.

c. % Wave determines the amount of microwave,

and can be set from 0-100% in 10% increments.

For example, 50% means the microwave system

will remain on for five continuous seconds for every ten seconds during the cook cycle.

Use number keys to

change a letter or number

7. Set the cook time. The maximum allowable cook time is 10:00.

8. If desired, select “Cook” to perform a test cook.

NOTE: The oven may require additional warm up time before a test cook can be performed.

9. Select “Save” to save changes.

10. When all editing is complete, return to the Options screen and turn off the Edit Mode (see page 13, section “Edit Mode ON/OFF”). This will allow access to the regular cook mode.

Page 37

Test Mode

Page 38

Page 39

Test Mode

To access the Test Mode:

1. While the oven is off or cooling, press the “i” key.

2. Press the Down arrow key to view the Info 2 screen (Figure 6, page 13).

3. Select “Test Mode.”

4. When prompted, enter the password 9 4 2 8 and press the Enter key.

Test Mode is helpful for testing the oven circuits. By default, idle airflow is set to 40%.

Status Indicators

The status indicators are located at the bottom of the Test Mode screen:

- P = Primary switch (backlit = open)

- S = Secondary switch (backlit = open)

- M = Monitor switch (backlit = open)

- t = Magnetron thermostat (backlit = open)

- H1 = Top heater (backlit = off)

- H2 = Bottom heater (backlit = off)

- A = Air (blower motor) (backlit = off)

- W = Microwave (backlit = off)

While holding the “Mag” key, measure the current transformer wire on the control board (Figure 18) for 13-15A (240 V) or 15-17A (208 V).

Current Transformer

Figure 18: CT Location on Control Board

For more information on magnetron-related issues:

- See page 30 for additional testing options.

- See page 39 for F3 troubleshooting.

- See page 40 for F5 troubleshooting.

Blower Motor Test

Press the key adjacent to “Blower” (Figure 19) to increase the blower motor speed in 10% increments.

Figure 16: Test Mode Screen

In the Test Mode screen shown above:

- All three door switches (P, S, M) are closed.

- The top heater (H1) is off.

- The bottom heater (H2) is off.

- The blower motor (A) is on.

- The microwave circuit (W) is off.

Magnetron Test

To turn on the magnetrons, press and hold the key adjacent to “Mag” (Figure 17). To turn them off, release the key.

Figure 17: Test Mode: Magnetron Test

Figure 19: Test Mode: Blower Test

Test for voltage on the J1 and J2 connector:

1. Ground pin 5 of the J1 connector.

2. While pin 5 is grounded, check the terminals on the control wiring plug for 0-10 VDC across pins 1 and 2 of the J1 connector (Figure 20) while increasing the blower speed. The measurement should increase appx. 1 VDC for each 10% increase in blower speed, up to 100% (10 VDC), which is approximately 7,000 RPM.

Pin 5: Ground

Figure 20: Blower Test Points on Control Board

Pin 1: Measure for 0-10 VDC

For troubleshooting an F1 fault, see page 37.

TEST MODE

Page 40

20 TEST MODE

Top Heater Test

The top heater (H1) heats the airflow from the top of the cavity. To turn on the top heater, press and hold the key adjacent to “H1 = Top Heat.” To turn it off, release the key.

Figure 21: Test Mode: Top Heater Test

While holding the H1 key, the backlight behind the “H1” status indicator at the bottom of the screen should turn off. This means the top heater is on. If the top heater is not heating up while the H1 key is pressed, see pages 38 and 42 for troubleshooting.

Bottom Heater Test

The bottom heater is located beneath the bottom jetplate. To turn it on, press and hold the key adjacent to “H2 = Bot Heat.” To turn it off, release the key.

Diagnostic Mode

Diagnostic Mode is helpful for monitoring oven data while performing test cooks. When Diagnostic Mode is turned on, the oven will show the following information during cooking:

- Event currently being cooked

- Time left per event

- % wave and % air

- Top/bottom heater power sharing (Stone “No” = 50/50, Stone “Yes” = 30/70)

- Status indicators

- Group and recipe name

- Top/bottom heater temperature

- CC set point

To turn Diagnostic Mode on or off, press the key adjacent to “Diagnostic.” For normal oven operation, Diagnostic Mode should remain off.

Figure 24: Test Mode: Diagnostic Mode On/Off

Figure 22: Test Mode: Bottom Heater Test

While holding the H2 key, the backlight behind the “H2” status indicator at the bottom of the screen should turn off. This means the bottom heater is on. If the bottom heater is not heating up while the H2 key is pressed, see pages 38 and 42 for troubleshooting.

Electrical Compartment (Ctl) Fan Test

To test the operation of the electrical compartment cooling fan, turn it on and off by pressing the “Ctl FAN” key. NOTE: All cooling fans should turn on in the Encore 2 oven.

Manufacturing Mode

Manufacturing Mode provides access to various tests and setup screens that are necessary for testing the oven at the time of manufacture. Some of these tests and setup screens are also useful when servicing the oven.

To access Manufacturing Mode, go into Test Mode (page 19) and press the key adjacent to “Manufacturing.”

Figure 25: Test Mode: Select “Manufacturing Mode”

Figure 23: Test Mode: EC Fan Test

Figure 26: Manufacturing Mode

Page 41

Microwave Leakage Test

While in Manufacturing Mode (page 20), select “MW Leak Test” to begin a microwave leakage test. The oven will warm up to 500°F (260°C). When warmup is complete, insert the water load and follow the steps on page 26.

Figure 27: Microwave Leakage Test

Microwave Power Test

Do not use - for manufacturer use only.

Burn In

While in Manufacturing Mode (page 20), select “Burn In” to begin a 25-minute burn in. This feature helps ensure the reliability of test results by adequately warming the cavity walls. Burn in is not usually required unless instructed by TurboChef.

To edit the serial number (Figure 30):

- Use the number/letter keys to change a character. After one second, the cursor will advance to the next character.

- Select “<” to move the cursor back.

- Select “>” to move the cursor forward.

- Select “Save” to save your changes or “Cancel” to exit without saving.

Figure 30: Serial Number Edit Screen

Self Test

While in Manufacturing Mode (page 20), select “Self Test” to access the oven self test screen.

Figure 28: Burn In

Serial Number Edit

While in Manufacturing Mode (page 20), select “Serial No. Edit” to edit the serial number (may be required when replacing a control board).

Figure 29: Select “Serial Edit”

Figure 31: Select “Self Test”

From the Self Test screen (Figure 32):

- “Auto Test” will run all tests (listed below).

- “Door Test” will test the door switch sequence.

- “Blower Test” will increment the blower motor speed to verify response at each setting.

- “Mag Test” will test magnetron operation.

- “Heater Test” will test heater operation.

When each test completes, the oven will display PASS or FAIL.

Figure 32: Self Test Screen

TEST MODE

Page 42

22 TEST MODE

Volt On

While in Manufacturing Mode (page 20), press the key adjacent to “Volt” to change whether or not the voltage is displayed on the Info 1 screen (page 13).

Figure 33: Volt On/Off

NOTE: The voltage display on the Info 1 screen is for detecting 208 or 240 VAC. It is not an accurate voltage input measure for installations that do not require voltage detection. For international installations, the “Volt” option should remain off.

Erase/Default Oven Settings

CAUTION: Settings cannot be retrieved once an erase option is confirmed.

There are two options on the “Erase” screen:

- Erase Counters and Fault Logs

- Complete Erase: This option will erase counters, fault logs, menu settings, temperature settings, serial number, date, and time. It will also default all oven options except “Load Menu” to OFF (see page 13, section “Set Options”).

Figure 35: Erase Screen

Changing Temperature Measurement: F or C

While in Manufacturing Mode (page 20), press the bottom-right soft key (Figure 36) to set the temperature measurement to Fahrenheit or Celsius.

While in Manufacturing Mode (page 20), select “Erase/Default” (Figure 34) to access the “Erase” screen (Figure 35).

Figure 34: Select “Erase/Default”

Figure 36: Change Temperature Measurement

Page 43

Oven Systems

Page 44

Page 45

Impingement System

The impingement system rapidly heats, filters, and recirculates air into the cook cavity.

This section contains information about the following components:

- Blower motor

- Blower motor speed controller (BMSC)

- Heater - top

- Heater - bottom

- High-limit thermostat

- Jetplate - bottom

- RTD - top and bottom

- Solid state relay (K4/K5 - Heaters)

For information on accessing and removing parts, see the Appendix.

Blower Motor

The blower motor is a brushless AC-switch reluctance type and spins clockwise. Its top speed is 7,100 RPM at 1 HP, and it is controlled by a proprietary controller (see below).

Blower Motor Speed Controller (BMSC)

The motor controller is proprietary and will only operate the motor described above. It is controlled via 0-10 VDC speed command from the control board and can be tested in Test Mode (see page 19).

High Limit Thermostat

The high limit thermostat is a 250 VAC, 3-pole, manual-reset thermostat with a trip point of 572ºF (300ºC). The thermostat interrupts power to the bottom or top heater in the event of an abnormal condition. Reset the high-limit thermostat by pressing the reset button on the back oven wall, near the power cord.

Jetplate - Bottom

The bottom jetplate channels air from the blower motor into the cavity. It is removable for cleaning.

NOTE: The top jetplate is not removable.

RTD - Top and Bottom

One RTD measures the temperature of the top heater, and another RTD measures the temperature of the bottom heater. If the display reads “999°F/C”, at least one RTD is open, resulting in an F7 fault. See page 41 for troubleshooting.

Testing Procedure:

1. Disconnect the RTD from the control harness (see page 48 for Encore and page 62 for Encore 2).

2. Place the RTD in ice water for two minutes.

3. Take a resistance reading of the RTD.

4. If RTD resistance is not 100 Ω (+/- 2 Ω), the RTD is defective and must be replaced.

Heater - Top

The top heater is an open-coil heater rated at 3,300 watts at 208 VAC, with a resistance of 13 Ω. The top heater is controlled by K5 of the K4/K5 solid state relay. For testing instructions, see page 20.

Heater - Bottom

The bottom heater is a sheathed-style heater rated at 3,000 watts at 208 VAC, with a resistance of

14.4 Ω. The bottom heater is controlled by the K4 of the K4/K5 solid state relay. For testing instructions, see page 20.

Solid State Relay - K4/K5 Heaters

The solid state relay is a 240 VAC, dual 40-amp relay. K4 switches power to the bottom heater, and K5 switches power to the top heater.

Troubleshooting

The following faults may occur in relation to the convection system:

- F1: Blower (see page page 37)

- F2: Low Temp (see page page 38)

- F6: EC Temp (see page page 41)

- F7: Thermo (see page page 41)

- F8: Heat Low (see page page 42)

The following cooking performance issues may occur in relation to the convection system:

- Food not cooking properly (see page 45)

OVEN SYSTEMS

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24 OVEN SYSTEMS

Oven Door

This section contains information about the following components:

- Oven door

- Interlock switches

- Relay (K3 - Monitor)

This section also contains procedures for:

- Removing/reinstalling the oven door

- Adjusting the oven door

- Adjusting the primary, secondary, and monitor switches

- Measuring RF leakage for microwave safety

For information on accessing and removing parts, see the Appendix.

The oven door assembly consists of a shunt plate, skin, and handle. Each of these items can be serviced and replaced independently.

The proper fit and adjustment of the oven door is essential for safe and reliable oven operation.

Removing/Reinstalling the Oven Door

To remove or reinstall the oven door, follow the

steps below. For illustrations, see page A-8 for the Encore and page A-24 for the Encore 2.

4. Carefully remove the oven door by pulling it away from the oven.

5. Reinstall (or replace) the door by securing it via the hex screws, verifying that the door is parallel to the oven frame. If it is not parallel, adjust the door (see below).

6. From Test Mode (page 19), check the status indicators “P” “S” and “M” to verify the switches are backlit (door closed) and not backlit (door open) at the proper times. If necessary, adjust the switches (page 25).

7. Complete a microwave leakage test (page 26).

Adjusting the Oven Door

WARNING: This procedure is performed while the oven is hot. To avoid burns, be careful when adjusting the door.

1. Open the door and remove the plastic caps.

2. Loosen the two hex screws and close the door.

3. Tap the center of the door to allow the door and frame to align properly. The hinge springs will pull the door to the frame; do not push on either side, rather only in the center.

4. Tighten the screws and reinstall the caps.

5. Plug in the oven and perform a microwave leakage test (see page 26).

1. Ensure the oven has cooled to 150°F (66°C).

2. Open the oven door to its full open position and insert rivets, screws, or nails (Figure 37) to hold the hinges in the open position.

Figure 37: Use Rivet, Screw, or Nail to Hold Hinge Open

3. Remove the plastic caps and using a

/16” hex driver, remove the hex cap screws (2 per side). This will allow the hinge blocks to be removed together with the door.

Critical Adjustment Notes

If the top or bottom of the door is rotated away from the oven cavity frame, the door is misaligned.

Corrective Action

1. Loosen the hex screws and push the door towards the flange.

2. The hinge springs will naturally pull the door to the flange. Tap the center to ensure a level surface and proper seal.

NOTE: Do not push one end at a time, which could cause the opposite end to lift away from the flange.

3. Re-tighten the hex screws.

4. Pull the door open only 0.25” (6 mm) and let go of the handle.

Continued on page 25.

Page 47

The door must completely snap shut on its own. If the

door sticks or force is needed to finish closing it, it is out of adjustment.

WARNING: Perform a microwave leakage test (page 26) after adjusting the oven door.

Interlock Switches

The primary, secondary, and monitor interlock switches engage and disengage in sequence to ensure a proper seal. When the door is opened, the switch sequence is P, S, M. Subsequently, the sequence is M, S, P when the door is closed.

Relay - K3 Monitor

The K3 relay is a 240 VAC, 24 VDC coil, 20 amp, sealed dual-pole relay. It shorts L1 and L2, which blows the F3 fuse if the monitor switch opens before the primary or secondary switches.

Adjusting the Primary, Secondary, and Monitor Switches

WARNING: This procedure is performed while the oven is hot. To avoid burns, be careful when adjusting the switches.

Use the following procedure to adjust the primary, secondary, and monitor switches. The secondary switch is located on the left side hinge assembly and the monitor switch is located on the right side hinge assembly. The primary switch is located on the upper-left corner of the oven and utilizes an actuator (attached to the door) and toggle assembly (attached to the chassis) to engage (Figure 38). For switch assembly details, see page A-8 for the Encore and page A-24 for the Encore 2.

1. Ensure the oven has been at operating temperature for at least fifteen minutes.

2. If adjusting the primary switch, confirm the primary switch’s latch toggle is in the correct position (Figure 38).

a. Visually inspect the latch toggle position and verify it is angled at no less than 85° and no more than 90° in reference to the front flange (oven face). See Figure 38.

b. If the toggle is less than 85° or greater than 90°, correct the toggle’s position by installing a spacer/shim (the more distance from the flange, the less angle on the toggle):

- NGC-1169-1: Shim, 0.030” (0.762 mm)

- NGC-1169-2: Shim, 0.045” (1.143 mm)

c. Verify the position of the toggle by opening and closing the oven door several times.

3. Adjust the switch(es):

a. Enter Test Mode (page 19).

b. Open the oven door and view the status indicators at the bottom of the screen to verify P, S, and M disengage in sequence.

c. Close the oven door and verify M, S, and P engage in sequence.

d. If the switches do not engage or disengage in sequence, close the door and adjust the necessary switch(es) by loosening the two #4-40 screws and #8-32 screw until the proper sequence is achieved.

NOTE: DO NOT allow the switch paddle to rest on the body of the switch in the closed door position. The final adjustment requires a minimum of a 0.030” (0.762 mm) gap to avoid over-travel and bent/ damaged switches.

0.030” (0.762 mm) Gap

Figure 38: Switch Detail and Proper Alignment

85°-90° Angle

4. Open and close the door several times to verify the switch gap.

5. Energize the microwave system and open the oven door.

6. Verify the W indicator is backlit, meaning the microwave system turns off when the door is open.

7. Perform a microwave leakage test (page 26).

OVEN SYSTEMS

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26 OVEN SYSTEMS

Measuring RF Leakage for Microwave Safety

WARNING: This procedure requires work with hot surfaces and water loads. To avoid burns, be careful when testing.

An RF (microwave) leakage test must be performed at the conclusion of the following service tasks:

- Door removal, replacement and/or adjustment

- Waveguide removal and/or replacement

- Magnetron removal and/or replacement

- Door switch adjustment and/or replacement

WARNING: If the unit fails the microwave leakage test (leakage greater than 5mW/cm the oven must be taken out of service immediately until the defect is corrected. In addition, the CDRH Regulation 21 Subpart C,

1002.20 requires that leakage readings of over 5mW/cm

must be reported to the manufacturer.

7. As microwave leakage is observed while moving the sensor, note any meter spike areas that come

close to 5mW/cm

for later re-measurement.

8. Replace the water load every 60 seconds until the test is completed, and also after scanning the door.

9. Close the oven door and return the meter probe to any “meter spike” areas and allow the probe to remain in the “spike” area for 17 seconds. Note the highest reading obtained.

NOTE: There may be several places on the door where this procedure needs to be done. If so, start out with a fresh water load each time a new area is measured, or if measurement of an area takes longer than 60 seconds.

10. After each test is complete, open the oven door and dispose of the hot water.

To measure RF leakage,

1. Turn the oven on and allow it to warm up to the set temperature (approximately 15 minutes if the oven starts cold).

2. Once the oven has warmed up, place the oven in Test Mode (page 19). From Test Mode, select Manufacturing Mode (page 20).

3. From the Manufacturing Mode screen, select “MW Leak Test” (page 21) and follow the instructions on the screen (also detailed in the following steps).

4. Place a water load into the cook cavity. The water load must conform to the following specifications:

- Volume: 275 ml ± 15 ml (1 cup/8 fl oz)

- Temperature: 68ºF ± 9ºF (20ºC ± 5ºC)

- Vessel: Low form, 600 ml beaker with an inside diameter of approximately 3.35” (85 mm) and made of Pyrex or equivalent.

5. Close the oven door and press the Enter key. The microwave system will turn on.

6. Measure microwave emission around the door as shown in the adjacent illustration, moving the meter sensor at 0.5 inches/second.

Figure 39: Measure for Microwave Leakage

Troubleshooting

The following faults may occur in relation to the oven door:

- F4: Monitor (see page 40)

The following issues may occur in relation to the oven door:

- “Cook Door Open” message when door is closed (see page 43)

Page 49

Microwave System

The oven employs left and right microwave systems. In the case of an over-current situation, the F3 fuse (20 amp) will blow, shutting off both systems immediately.

This section contains information about the following components:

- Capacitors

- Filament transformers

- High-voltage transformers

- High-voltage diodes

- Magnetrons

- Magnetron cooling fans

- Magnetron thermostats

- Relay (K1 - Filament)

- Relay (K2 - Anode)

- Relay (K7 - Encore: Magnetron cooling fans / Encore 2: All cooling fans)

- Waveguides

1. Disconnect the oven from the power source.

2. Fully discharge the capacitor.

3. Isolate the capacitor from the circuit.

4. Check for an open or shorted capacitor by placing ohmmeter leads between the capacitor terminals:

- Escalating ohm readings = capacitor OK

- Constant infinite resistance = capacitor open

- Constant very low resistance = capacitor

shorted

5. If the capacitor is not open or shorted, set the

meter to measure capacitance and again place the leads between the capacitor terminals. The meter reading should equal the label value, plus or minus 10%. If not, replace the capacitor.

Filament Transformers

For better operation and reliability, the oven utilizes separate transformers in order to preheat the magnetron filament.

This section also contains procedures for:

- Testing a capacitor (page 27)

- Wiring the filament transformers (page 27)

- Testing a filament or high-voltage transformer (page 28)

- Wiring the high-voltage transformers (page 28)

- Testing a high-voltage diode (page 29)

- Testing a magnetron for an open/shorted filament (page 30)

For information on accessing and removing parts, see the Appendix.

Capacitors

- Capacitor rating is 0.91uF, 2500 VDC for all 60 Hz installations (except Japan).

- Capacitor rating is 1.15uF, 2500 VDC for all 50 Hz installations.

- Capacitor rating is 0.85uF, 2500 VDC for 60 Hz Japan installations.

Testing a Capacitor

The filament transformers are energized for approximately five seconds prior to energizing the microwave circuit via the high-voltage transformers. When in operation, the filament transformers supply approximately 3.15 VAC at 10 amps to each magnetron filament. The filament transformers are controlled via the K1 relay.

Wiring the Filament Transformers

The installation of filament transformers is straightforward. Filament transformers are wired in-phase and in-line. Refer to the schematic detailing proper wiring (page 48 for Encore and page 62 for Encore 2).

To verify correct wiring (North America), measure the voltages between terminals

1 & 3 on FT1 and FT2. The voltages must be 208

240 VAC respectively. See the table on page 29

and for resistance values.

NOTE: The orange wire always goes to terminal

on US models.

1 & 2 and

OVEN SYSTEMS

DANGER: Never attempt any measurement of the capacitors while they are enabled. Lethal voltage will be present. Measure only in compliance with these procedures.

To verify correct wiring (International), measure the voltage between the taps on FT1 and FT2. The voltage must be 230 VAC. See the table on page 29 for resistance values.

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28 OVEN SYSTEMS

High-Voltage Transformers

The high-voltage transformers are ferro-resonant, which limits faulty currents and minimizes magnetron power changes due to input voltage changes. The highvoltage transformers supply the high voltage for the voltage doubler circuit. They are controlled via the K2 relay.

Wiring the High-Voltage Transformers

DANGER: Never attempt to wire or measure the secondary voltage values of the high-voltage transformers. Lethal voltage will be present.

The proper reinstallation of a high-voltage transformer is critical. Upon removing a high-voltage transformer, make sure to note where each wire was installed. Refer to the oven schematic (page 48 for Encore and page 62 for Encore 2) for wiring detail.

As shown in the schematic, transformers are installed

180

mirror opposite and wired essential for longevity that the high-voltage transformers remain 180º out-of-phase. This can be checked by placing a volt meter across terminals

(primary voltage)

out-of-phase. It is

T1-1 and T2-1

Testing a Filament or High-Voltage Transformer

DANGER: Never attempt to measure the secondary voltage values of the HV transformers. Lethal voltage will be present.

1. Disconnect the AC power source and discharge the high-voltage capacitors.

2. Disconnect all the wires in question going to and from the transformer.

3. Use an ohmmeter to check the resistance of the primary and secondary winding. Refer to the table on page 29 to determine if the transformer is OK. If the resistance is different than the values provided in the table, replace the transformer.

High-Voltage Diodes

The high-voltage diode (Figure 40) is assembled by connecting several 1000-1500 volt semi-conductor diodes in a series to increase the reverse voltage capability. In the circuit, the high-voltage diode conducts to prevent the filament voltage from becoming positive, thus as the high-voltage winding of the transformer goes to a peak of 2400 volts, the high-voltage capacitor is charged to 2400 volts.

With the microwave system energized, the volt meter will read

different electrical installations). VAC

wired in-phase (incorrectly). As a last check, energize the microwave system and verify the voltages between the taps on each high-voltage transformer.

The wiring issue must be corrected prior to returning the oven to service, as the voltages must be:

- : 230 VAC

NOTE: The orange wire always goes to terminal 3 on

US models

the incoming voltage (different readings for

If the meter reads 0

, the high-voltage transformers are most likely

 : 208 VAC between 1 & 2 and 240 between 1 & 3.

Figure 40: High Voltage Diode

When the high-voltage winding starts to go toward negative, the high-voltage diode becomes nonconducting with the charged high-voltage capacitor in series with the high-voltage winding. When the transformer gets to its negative peak of -2400 volts, the voltage applied to the anode body of the magnetron through the ground path of the oven is -4500 volts. The high-voltage diodes are rated at 16 kVDC.

Page 51

High Voltage Transformers Primary Voltage, Frequency, Taps,

and Resistance

NGC-3062-1 208 VAC, 60 Hz, 1 & 2,

0.819–1.001 Ω

240 VAC, 60 Hz, 1 & 3,

0.972–1.188 Ω

NGC-3062-2 230 VAC, 50 Hz, 1 & 2,

0.972–1.188 Ω

Filament Transformers Primary Voltage, Frequency, Taps,

and Resistance

NGC-3061-1 208 VAC, 60 Hz, 1 & 2,

17.49–21.37 Ω

240 VAC, 60 Hz, 1 & 3,

20.61–25.19 Ω

NGC-3061-2 230 VAC, 50 Hz, 1 & 2,

18.99–23.21 Ω

Testing a High-Voltage Diode

Magnetrons

Secondary Taps and Resistance

4, Ground, 53.60–65.52 Ω

3, Ground, 57.52–70.30 Ω

Secondary Taps and Resistance

4, 5, very low resistance - if reading is open, transformer has failed.

DANGER: Never attempt to measure high voltage directly. Death or serious injury could result.

1. Disconnect the oven from the power source.

2. Fully discharge the capacitors.

3. Connect the voltage meter in series with high voltage diode.

4. Using a multimeter set to DC voltage, connect one meter lead to one side of a 9-volt battery and the other lead to one side of the high-voltage diode.

5. Connect the other side of the 9-volt battery to the other side of the high-voltage diode. DC voltage should be present on the meter in only one direction.

6. Switch the meter leads on the high-voltage diode, which will cause the opposite reading to be visible. Depending on the voltage of the battery, voltage between 5-7 VDC should be present in only one direction and 0-0.1 VDC in the other direction.

Magnetrons supply the RF energy at 2.45 GHz and begin to oscillate when they are supplied with approximately 4.1 kVDC at approximately .350 mA. During operation, each magnetron will output a nominal 1 kW of power.

Perform a microwave leakage test (page 26) after installing a new magnetron or reinstalling an old one.

CAUTION: Do not allow debris to enter the waveguides when servicing the magnetrons.

Magnetron Cooling Fans

The magnetron cooling fans (outer fans on the back panel) are actuated by the K7 relay when the magnetrons are in operation, and remain on for four minutes and fifteen seconds after the magnetrons turn off. They operate at:

- 208/240 VAC (60 Hz with voltage sensing)

- 220 VAC (60 Hz with no voltage sensing)

- 230 VAC (50 Hz installations)

NOTE: In the Encore 2, the magnetron cooling fans are actuated by the K7 relay when the EC temperature exceeds 120°F (49°C), regardless of magnetron operation.

OVEN SYSTEMS

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30 OVEN SYSTEMS

Magnetron Thermostats

The magnetron thermostats are “open-on rise.” They are designed to open at 270ºF (132ºC), which triggers an F5 fault.

NOTE: The magnetron thermostats are wired in series. If one opens, the control will switch off both magnetrons until the open thermostat closes. The thermostats are self-resetting.

Testing a Magnetron for an Open/Shorted Filament

DANGER: The only safe way to test a magnetron is by a resistance test of its filament. Never attempt to measure the magnetron using any other method while the microwave system is on. Death or serious injury will occur.

1. Disconnect the AC power source and discharge the high-voltage capacitors.

2. Isolate the magnetron from the circuit by removing the wires from the F and FA terminals (Figure 41).

Filament and High Voltage Terminals

Antenna

Figure 41: Magnetron Detail

Relay - K7 Encore: Magnetron Cooling Fans / Encore 2: All Cooling Fans

The K7 relay is 240 VAC, 24 VDC coil, 20 amp, sealed single-pole relay. It switches power to the magnetron cooling fans when the magnetron filaments are actuated. Power is switched off after four minutes and fifteen seconds.

NOTE: The four-minute, fifteen-second timer starts over each time the magnetron filaments are actuated.

3. An ohmmeter connected between the filament terminals (F, FA) should indicate a reading of less than 1 Ω (Figure 41).

4. A continuity check between either filament terminal and the magnetron chassis should indicate an infinite resistance (open).

CAUTION: Do not allow debris to enter the waveguides when servicing the magnetrons.

Relay - K1 Filament

The K1 relay is a 240 VAC, 24 VDC coil, 20 amp, sealed double-pole, double-throw relay. It switches power to the filament transformers.

Relay - K2 Anode

The K2 relay is a 240 VAC, 30 amp, double-pole, double-throw, 24 VDC relay coil. It switches power to the high-voltage transformers.

NOTE: In the Encore 2, the magnetron cooling fans are actuated by the K7 relay when the EC temperature exceeds 120°F (49°C), regardless of magnetron operation.

Waveguides

The waveguides channel microwaves into the cook cavity. If debris or contamination gets into the waveguides, the life of the magnetrons may be shortened. Be careful to not allow debris into the waveguides when servicing the magnetrons.

Troubleshooting

The following faults may occur in relation to the microwave system:

- F3: Magnetron Current Low (see page 39)

- F5: Magnetron Over Temperature (see page 40)

The following issues may occur in relation to the microwave system:

- Electrical component failure (blank or scrambled display, damaged control board, etc.)

- Food not cooking properly (see page 45)

Page 53

Control System

This section contains information about the following components:

- Control board

- Display

- Ethernet extension cable

- Keypad

- LED light ring

- Speaker

- USB/Smart card reader

For information on accessing and removing parts, see the Appendix.

Control Board

The control board signals each oven component based on commands from the keypad. 24 VDC can be measured at pin 2 of the J7 connector to confirm control voltage is being applied (see page 48 for the Encore and page 62 for the Encore 2).

Before replacing a control board, determine if the oven is connected to the store’s network. If so:

1. Record the oven’s network information:

a. While the oven is off or cooling down, press the “i” key. b. Press the Down Arrow key to view the Info 2 screen. c. Select “Set Options.” d. Select “Network Setup.”

2. Record the IP, Mask, GW, DNS1 and

DNS2 numbers.

3. Re-enter these numbers after replacing the

control board.

Ethernet Extension Cable

The ethernet extension cable exits the oven at the back panel and allows the oven to be connected to a local network, in case the customer desires remote programming and oven diagnostics reporting.

Keypad

The keypad is an 10 x 10 matrix membrane switch. For details on key functions, see page 9.

LED Light Ring

The LED light ring provides visual cues in regards to oven operation and counts down the final 30 seconds of each cook cycle.

Speaker

The speaker provides audible feedback to the oven operator whenever a key is pressed or a task (such as a cook cycle) is completed.

USB/Smart Card Reader

The USB/smart card reader allows the oven operator to load menus and firmware updates to and from a USB thumb drive or smart card. For instructions, see page 15.

Troubleshooting

The control system could potentially be related to the cause of any fault (see pages 35-42 for detailed fault troubleshooting).

The control system might also be related to any issue diagnosed in the section “Non-Fault Code Troubleshooting” on pages 43-46.

If the control board is damaged to the point of not allowing access to the Network Setup screen, have the store contact its Oven Connect administrator to obtain the proper network settings.

Display

The TFT display is the primary user interface. Both 24 VDC and 5 VDC are supplied from the control board through the 3-pin power cable. 24 VDC is used for the backlighting and 5 VDC is used for the logic systems.

OVEN SYSTEMS

Page 54

32 OVEN SYSTEMS

Power Components

This section contains information about the following components:

- Electrical compartment cooling fan

- Electrical compartment thermostat

- Electrical compartment thermocouple

- EMI filter

- Fuses

- Power supply, 24 VDC

- Relay (K6 - Voltage)

- Relay (K7 - EC Cooling Fan - Encore 2 Only)

- Relay (K8 - EC Cooling Fan - Encore Only)

- Voltage sensor

- Wire harnesses

For information on accessing and removing parts, see the Appendix.

Electrical Compartment Cooling Fan

The oven has three fans across the top of the back panel. The center fan cools the electrical compartment. It is actuated by the cooling fan thermostat when the temperature of the electrical compartment reaches 120ºF (49ºC).

Electrical Compartment Thermostat

encountered by the motor controller, any cooling fan, either filament transformer, or power supply.

The F3 fuse is designed to blow in case of an overcurrent situation encountered by the microwave system (magnetron, high-voltage transformer, diode, capacitor). It is also designed to blow if the monitor switch opens before the primary or secondary switch.

Power Supply

The power supply outputs 24 VDC at 40 watts to the control board and relays.

Relay - K6 Voltage

The K6 relay is a 240 VAC, 30 amp, three-pole, double-throw, 24 VDC relay coil. Operational in North America only, it switches between 208 and 240 VAC on the HV transformer and filament transformer taps (depending on incoming voltage). Through the voltage sensor, the oven defaults to the 240V position and switches to 208 if less than 222 volts is detected. 230V/400V international ovens and all Japan models utilize the normally-closed (N.C.) contacts of the relay (default position) to power the microwave transformers.

The Encore cooling fan thermostat, located on the RHS electrical panel, actuates the electrical compartment cooling fan via the K8 cooling fan relay. The Encore 2 cooling fan thermostat, located on the top electrical panel, actuates the electrical compartment cooling fan via the K7 cooling fan relay.

Electrical Compartment Thermocouple

The electrical compartment thermocouple is part of the control board and measures the temperature of the electrical compartment. If it is above 158ºF (70ºC), an F6: EC TEMP fault will display. The control board checks the electrical compartment temperature once every 60 seconds.

EMI Filter

The EMI filter helps suppress the amount of RF interference emitted by the oven.

Fuses

The F1 and F2 fuses are 12-amp, ATMR, class CC. The F3 fuse is 20-amp, ATMR, class CC. The F1 fuse (via blue wire) and F2 fuse (via brown wire) are designed to blow if an over-current situation is

Relay - K7 Encore: Magnetron Cooling Fans / Encore 2: All Cooling Fans EC Cooling Fan

The K7 relay is a 240 VAC, 24 VDC coil, 20 amp, sealed double-pole, double-throw relay. It switches power to the center cooling fan when the electrical compartment thermostat detects 120ºF (49ºC). See page 29 for more details.

Relay - K8 EC Cooling Fan (Encore only)

The K8 relay is 240 VAC, 24 VDC coil, 20 amp, sealed single-pole relay. It switches power to the center cooling fan when the electrical compartment thermostat detects 120ºF (49ºC).

NOTE: The Encore 2 EC cooling fan is actuated by the K7 relay; see above.

Page 55

Voltage Sensor

For North America models only. Voltage selection is completed at the time of manufacture; however, if incoming voltage for the store is different than the preset voltage, the operator will be required to select either 208 or 240 after turning on the oven. The correct voltage will be enlarged on the screen, identifying which option to select.

Wire Harnesses

The wire harnesses distribute power to the oven’s electrical components. For oven schematic and wire harnness drawings, see pages 47-59 for the Encore, and pages 61-72 for the Encore 2.

Troubleshooting

The power components could potentially be related to the cause of any fault (see pages 35-42 for detailed fault troubleshooting).

The power components might also be related to any issue diagnosed in the section “Non-Fault Code Troubleshooting” on pages 43-46.

Filtering System

This section contains information about the following components:

- Catalytic converter

- Air filter

- Vent catalyst

Catalytic Converter

The catalytic converter, a VOC type catalyst, is located behind the inside cook cavity wall and is responsible for cleaning the recirculating airflow. The catalyst functions by substantially lowering the combustion temperature of grease entrained in the air path to approximately the same temperature of the airflow; thus the grease burns and breaks down into CO2 and H2O as it passes through the catalytic converter. The catalyst will operate most efficiently at temperatures above 475ºF (246ºC).

cals containing phosphates, NaOH, silicates, Na and Potassium Salts. These chemicals are found in most commercial degreasers and cleaners; therefore, only TurboChef

CAUTION: Clean the catalytic converter with TurboChef Oven Cleaner and rinse thoroughly with distilled water. Let the catalytic converter air dry before reinstalling. If TurboChef Oven Cleaner is not available, use only distilled water.

Oven Cleaner should be used.

Air Filter

The filter is located on the back of the oven. It helps prevent debris from getting into the electrical compartment through the cooling fans. The filter requires scheduled maintenance and occasional replacement, as it must be kept clean and in good working condition to ensure proper air circulation to the electrical components of the oven. See page 5, step 5 for details.

Vent Catalyst

In addition to the main catalytic converter, the oven contains a secondary catalyst in the vent tube path. This catalyst further assists in the breakdown of grease and particulate matter before the excess air enters the atmosphere.

Troubleshooting

The following issues may occur in relation to the filtering system:

- F9: CC Temp (if the catalyst is clogged with grease and debris - see page page 42)

- Fire in the cook cavity (if catalytic converter is clogged and oven is not regularly cleaned).

- Steam present at the top of the oven door or when the door is opened (if vent catalyst is clogged or vent cover is installed upside down).

- Electrical component failure (if filter is not present or is clogged).

- Undesirable flavor transfer.

- Undesirable odors.

OVEN SYSTEMS

The catalyst material is very sensitive to certain chemical compounds. Irreversible damage can occur if the catalyst is exposed to cleaning chemi-

Page 56

34 OVEN SYSTEMS

This page intentionally

left blank.

Page 57

Troubleshooting

Page 58

Page 59

Overview of Troubleshooting

This section contains information on the following:

- Fault code descriptions

- Fault code troubleshooting

- Non-fault code troubleshooting

For information on accessing Test Mode, see page

19. For information and illustrations on replacing

components, see the Appendix.

Fault Code Descriptions

To view the fault log:

1. While the oven is cooling down or off, press

the “i” key to access the Info Mode.

2. From the Info 1 screen (Figure 5, page 13),

select “Fault Log.”

NOTE: Press the Down key to view the F9 fault.

3. To view time stamps of each fault occurrence,

press the soft key adjacent to the fault code.

84ºF (47ºC) of the set temperature or when the heaters are tested in Test Mode (page 20, section “Top Heater Test” and “Bottom Heater Test”).

F3: Magnetron Current Low

This fault is displayed when the current transformer (CT) on the I/O control board detects less than 10 amps. The fault is monitored when the microwave is on during a cook cycle or in Test Mode.

The fault is cleared from the display at the onset of a cook cycle if the CT detects 10 amps or greater, or when the magnetrons are successfully energized in Test Mode.

F4: Door Monitor Defective

This fault is displayed when the control detects that the monitor interlock switch opens before the primary or secondary interlock switches. Additionally, this fault will blow the 20-amp F3 fuse if the microwave high voltage system is energized when the fault occurs. The fault is cleared from the display when the oven is powered off and then back on.

F1: Blower Running Status Bad

This fault is displayed when the motor controller indicates no running status.

The motor and motor controller are monitored continuously in all modes with special handling in Test Mode (page “Test Mode” on page 19). If a fault is detected, the oven will stop cooking and go to the “Cooling Down” screen while flashing “F1: Blower.”

Upon turning on the oven, the control will attempt to restart the motor. If the restart is successful, the fault message will be cleared from the display. The fault message is also cleared at the onset of cooking or when the blower motor is tested in Test Mode (page 19, section “Blower Motor Test”).

F2: Cook Temperature Low

This fault is displayed if the cook cavity temperature drops more than 84ºF (47ºC) below the set temperature during a cook cycle (registered after five seconds into a cook cycle).

The fault is cleared from the display at the onset of cooking if the cook cavity temperature is within

NOTE: Door interlock switches are in parallel. For the oven schematic, see page 48 for the Encore and page 62 for the Encore 2. The fault is monitored during a cook cycle and in Test Mode when the microwave is on (page “Test Mode” on page 19).

F5: Magnetron Over Temperature

This fault is displayed if either magnetron thermostat reaches 270ºF (138ºC), or if either thermostat connector is disconnected.

The thermostats will reset automatically, and are wired in series. The fault is cleared from the display at the onset of a cook cycle if the thermostat is closed and connected properly.

F6: Electrical Compartment Temperature High

This fault is displayed when the temperature of the electrical compartment exceeds 158ºF (70ºC), as measured by the sensor on the control board. The electrical compartment temperature is monitored once per minute.

The fault is cleared from the display if on the next check, the thermocouple temperature is below 158ºF (70ºC).

TROUBLESHOOTING

Page 60

36 TROUBLESHOOTING

F7: RTD Open

This fault is displayed when the control detects that one or both of the RTDs is “open.” The display will show “999º” indicating the RTD is open or disconnected. The fault is cleared when the control detects continuity.

F8: Heat Low

This fault displays when the oven is warming up or during Test Mode (page 19) if the cook cavity temperature fails to rise at least 14ºF (7ºC) within a given 30 seconds.

Fault Code and Description

F1: Blower Running Status Bad

When Active Refer to...

Warmup Idle Cooking Test Mode

a a a a

F9: Cook Cavity Temperature High

This fault will signal that the catalyst has “flashed” due to excessive grease. The fault occurs when the RTD senses +650°F (343°C) for more than 40 seconds but less than 2 minutes. The fault will only appear in the fault log and will not terminate a cook cycle upon discovery.

Page 37

F2: Cook Temperature Low

F3: Magnetron Current Low

F4: Door Monitor Defective

F5: Magnetron Over Temperature

F6: EC Temperature High

F7: RTD Open

F8: Heat Low

F9: Cook Cavity Temperature High

a a

a a a a

a a

Page 38

Page 39

Page 40

Page 41

Page 42

Fault codes are listed in order of hierarchy. For example, if during cooking the oven experiences an F1 and F2 fault, the oven will report only the F1 fault because the software will halt all actions upon discovering the F1 fault.

FAULT CODES F1  F5 AND F7 WILL TERMINATE A COOK CYCLE UPON DISCOVERY.

Page 61

Fault Code Troubleshooting

From Test Mode, you can run oven diagnostics and check fault counts. To access Test Mode see page 19, or turn on Diagnostic mode see page “Diagnostic Mode” on page 20, section “Demo Mode ON/ OFF.” To locate oven components for testing, adjustment, or replacement, see the Appendix.

Troubleshooting:

F1: BLOWER (Blower Running Status Bad)

Do resistance measurements between windings and chassis agree with values on motor windings resistance table (below)?

Replace blower motor.

Test for voltage on the J1 connector.

1. Ground pin 5 of the J1 connector.

2. While pin 5 is grounded, check the J1-1 (red) terminal on the control wiring plug for 0-10 VDC across pin J1-1 and common (Encore page 48/ Encore 2 page 62) while incrementing the blower speed in  .

YES

Replace the BMSC.

Is the blower motor spinning freely?

Is the Status Indicator “A” backlit in  ? (page “Test Mode” on page 19)

YES

1. Disconnect control wiring (J1 connector).

2. Ground pin 5 of the J1 connector (Status OK wire) to chassis to remove the back light from status indicator “A” (see “Test Mode,” page 19 for more details).

Was the back-light removed from status indicator “A” while pin 5 was grounded?

Remove obstruction or if necessary, replace blower motor.

Check the wire harness and if necessary, replace the control board.

Is DC voltage present throughout all speed settings in   on the J1 connector

To From Description Expected Resistance

Black Red Winding (A-B) 2.0-2.6 Ω

Black White Winding (A-C) 2.0-2.6 Ω

Red White Winding (B-C) 2.0-2.6 Ω

Black, Red, or White Green Windings to Chassis Open

Motor Windings Resistance Table

YES

TROUBLESHOOTING

Page 62

38 TROUBLESHOOTING

Troubleshooting:

F2: LOW TEMP (Cook Temperature Low)

Reset and determine why

YES

it tripped – excess grease buildup, etc. The reset button is on the back panel near the power cord.

Is the solid state relay defective?

1. Leave the 4-pin control wiring connected.

2. Set the meter to DCV.

3. In Test Mode, turn on the top (H1) heater (page 20).

4. On K5, check between B(-) white to ground. If the signal goes from 24 VDC to 0.VDC, then the signal is good and the SSR is defective.

5. Repeat steps 3-4 for the bottom (H2) heater on K4 between A(-) white to ground.

SSR is defective

Is the high-limit thermostat tripped?

Replace the defective heater.

SSR OK

Is the H1 or H2 heater defective?

1. Isolate the heater circuits by disconnecting them from the high-limit switch.

2. The top (H1) heater should have a resistance of 13 Ohms at room temperature.

Heater is defective

3. The bottom (H2) heater should have a resistance of

14.4 Ohms at room temperature.

See page 20, sections “Top

Heater OK

Heater Test” and “Bottom Heater Test” for Test Mode instructions.

Is wiring from the solid state relay to the I/O control board OK?

Check wires at the 4-pin connector on the SSR:

(A + - + - B)

1 2 3 4

(See page 48 for Encore schematic/ page 62 for Encore 2 schematic.)

Replace the solid state relay.

Correct wiring.

Replace the control board.

YES

Is each RTD functioning properly? (See page 23, section “RTD - Top and Bottom Testing Procedure” for testing instructions.)

YES

Ensure wiring is correct. If necessary, replace the defective RTD.

Page 63

Troubleshooting:

F3: MAG CURR (Magnetron Current Low)

Energize the magnetron circuit from Test Mode (page 19). Are there 10+ amps present on the current transformer wire, located on the control board?

YES

Run test cook cycles to see if fault repeats (page 10). If not, clear faults. Did fault repeat?

Remove and inspect the magnetrons for discolored antennas or waveguide contaminants. Were any defects found?

YES

Replace affected parts.

Energize the magnetron circuit from Test Mode (page 19) and test for control voltage on the K2 anode relay. Is 24 VDC present on terminals A+B?

Is voltage leaving the K2 anode relay on terminals 4+6?

Reinstall all parts and place the oven back in service.

YES

Intl.

Are 10+ amps present during the F3 fault alarm?

Is the oven International or U.S.?

Confirm the F3 fuse is a

20-amp ATMR fuse. Is it

open/blown?

YES

Energize the magnetron circuit from Test Mode (page 19) and test for control voltage to the K2 anode relay. Is 24 VDC present on pins B-17 and C-14 on the control board?

YES

Replace the control board.

Inspect/replace wiring between B-17, C-14 of the control board and terminals A+B of the K2 relay.

Inspect/replace wiring between terminal 4 (K2) and T1-1 (HV transformer), and between terminal 6 (K2) and T2-3 (HV transformer; US 240 VAC) / T2-2 (HV transformer; US 208 VAC or Intl.).

Replace the K2 anode relay.

Is the K6 mechanical

U.S.

Replace the F3 fuse and

YES

Replace the control board.

Test the high-voltage transformers for primary and secondary winding resistance (page 28). Are they functioning properly?

Test the filament transformers (page 28). Are they functioning properly?

Test the capacitors (page 27). Are they functioning properly?

Test the high-voltage diodes (page 29). Are they functioning and wired properly?

verify the operation of the switches (page 25, section “Interlock Switches”).

Is primary voltage present at the high-voltage transformers (page

28)? NEVER TEST SECONDARY VOLTAGES

YES

relay in good working order?

YES

Replace K6 relay.

Replace the high-voltage transformers.

Replace the filament transformers.

Replace the capacitor(s).

Replace the high-voltage diode(s).

TROUBLESHOOTING

Replace the magnetron(s).

Page 64

40 TROUBLESHOOTING

Troubleshooting:

F4: MONITOR (Door Monitor Defective)

Are the switches opening in the correct sequence (P, S, M) while the oven is hot? (Ensure the oven has been at operating temperature for at least fifteen minutes.) To access Test Mode or for info on status indicators, see page 19.

Adjust the monitor safety switch. See page 25 for instructions. From the cooling down or off screen, press and hold the i key for 5 seconds to reset the oven. Doing so should clear the fault message.

Is the connector to the monitor switch properly seated?

YES

Is the 20-amp F3 fuse blown?

YES

Are the switches closing in the correct sequence (M, S, P)?

From the cooling down or off screen, press and hold the i key for 5 seconds to reset the oven. Doing so should clear the fault message.

YES

Seat the connector on the switch.

Replace the F3 fuse.

Are the switches bent or damaged?

YES

Replace damaged switch(es).

Verify wiring and check K7 fan relay operation (B-17 and C-16). If necessary, replace the cooling fans.

Verify wiring to magnetrons, and verify magnetron thermostats are not open. Are wiring and thermostats okay?

Correct wiring/ replace the

YES

thermostats.

Troubleshooting:

F5: MAG TEMP (Magnetron Over Temperature)

Open the top cover, place the oven in

Test Mode, and test the magnetrons (see page 19). Are the magnetron cooling fans operating?

Do the magnetrons pass testing in the Test Mode? See page 19.

YES

Fault message should disappear.

Replace the magnetron(s) and test again in Test Mode.

YES

Is the airpath into the electrical compartment blocked or clogged with debris? Check the cooling fan finger guards and filter on the back panel.

YES

Remove the debris or reposition the oven away from obstruction.

Page 65

Troubleshooting:

F6: EC TEMP (Electrical Compartment Temperature High)

YES

Does the oven have room to ventilate? Required clearances: Top: 5” (127 mm) Sides: 2” (51 mm)

YES

Test the cooling fan in Test Mode (page 20, section “Electrical Compartment (EC) Fan Test”). Is the middle cooling fan rotating when the fan is turned on? NOTE: The three fans should turn if servicing an Encore 2 oven.

YES

Check for obstructions in the airflow and remove them and clean the filter.

Is the oven in an area of moderate temperature (120ºF [49ºC] or cooler)?

Move oven to open area or remove

items that are in close proximity.

Is the wire harness properly connected? Check cooling fan thermostat, K8 relay

(Encore), K7 relay (Encore 2), and center cooling fan. (See page 48 for Encore schematic/page 62 for Encore 2 schematic.)

YES

Replace defective component.

Relocate oven to cooler area.

Correct wiring.

Test RTD resistance (page 23, section “RTD Top and Bottom Testing Procedure”). Is the RTD open?

YES

Troubleshooting:

F7: THERMO (RTD Open)

Is the RTD properly connected to the control board? (See page 48 for Encore schematic /page 62 for Encore 2 schematic.)

Replace the RTD.

Replace the control board.

Correct connection.

TROUBLESHOOTING

Page 66

42 TROUBLESHOOTING

YES

Troubleshooting:

F8: HEAT LOW

Is the blower motor moving air? Check in Test Mode - see page 19, section “Blower Motor Test.”

Is the high-limit thermostat tripped?

YES

Reset and determine why it tripped – excess grease buildup, etc. The reset button is on the back panel near the power cord.

in Test Mode (page 20, section “Top Heater Test” and “Bottom Heater Test”).

YES

Replace the defective heater(s).

Verify the solid state relay is not shorted, across output, or open due to the 4-pin connector not being properly seated.

Is the top or bottom heater defective? Check

Is the solid state relay defective or damaged?

YES

Replace the solid state relay.

See page 37 to troubleshoot F1: BLOWER (Blower Running Status Bad)

Is the wiring from the solid state relay to the control board OK? (See page 48 for Encore schematic/page 62 for Encore 2 schematic.)

YES

Replace the control board.

Troubleshooting:

F9: CC TEMP (Cook Cavity Temperature High)

Correct wiring.

If this fault frequently occurs,

- Ensure the oven is cleaned daily (see pages 5-6).

- Determine if large amounts of grease-laden food are being cooked, and if so, recommend smaller portions per cook cycle.

Page 67

Non-Fault Code Troubleshooting

This section provides troubleshooting tips for issues that may occur independently of an oven fault.

Troubleshooting:

No Keypad Input

Press and hold the “i” key to reset the oven. Does the keypad work now?

YES

Replace the keypad. If the problem persists, replace the control board.

Enter Test Mode (page 19) and observe the status indicators when the door closes. Do all three door switches close in sequence (P, S, M)?

Check the door/door hinge connection. Is the door loose on the hinge arms?

YES

Is the keypad cable properly connected to the control board?

Troubleshooting:

“Cook Door Open” Message when Door is Closed

Is “F4 MONITOR”

fault present?

Adjust the door switch(es) to allow the switch(es) to close (page 25, section “Adjusting the Primary, Secondary, and Monitor Switches”). Is the issue resolved?

YES

Disconnect keypad and reconnect to to ensure the pins are making good contact.

Refer to the F4: MONITOR troubleshooting procedures on page 40.

Is the wiring from the door switches to control board OK?

TROUBLESHOOTING

Adjust/tighten the door (page 24, section “Adjusting the Oven Door”).

Replace the door switch(es).

Correct wiring or replace it if damaged.

Page 68

44 TROUBLESHOOTING

Troubleshooting:

No Display – Screen is Blank

Is wiring from the control board to the display OK?

YES

Is pin 1 on the J7 connector receiving 5 VDC? (See page 48 for Encore schematic/ page 62 for Encore 2 schematic.)

YES

Is the display area hot (higher than 120ºF [49ºC])?

YES

Does the keypad beep when a key is pressed?

Replace the F1 and/or the F2 fuse.

Correct wiring. If ribbon cable is damaged, replace the ribbon cable.

Replace the power supply.

Replace the control

board.

Check wiring from the power supply to the control board. Correct wiring if necessary.

Is the power supply receiving power? (Is the green light on?)

YES

Is the power supply output 24 VDC?

YES

Is the control board receiving correct VDC?

Verify voltage on pin 2 of the J7 connector is 24 VDC (See page 48 for Encore schematic/ page 62 for Encore 2 schematic).

YES

Replace the display.

YES

Go to page 41 for F6: EC Temp troubleshooting.

Replace the keypad.

Is 5 VDC present on pin 1 of the J7 connector? If not, replace the control board.

YES

Replace the control board.

Page 69

YES

Troubleshooting:

Food Not Cooking Properly

Does the problem occur for all food items? For example, are all recipes undercooked/overcooked/etc.?

Are there any fault codes present? See pages 35-36.

Is the menu part number and revision correct? Verify with customer or contact TurboChef Customer Service.

YES

Troubleshoot the fault(s) using the steps on pages 37-42.

YES

Contact Customer Service to obtain the correct menu and load it to the oven.

Is the food item in the correct starting state (e.g., frozen, fresh, etc.)?

Ensure the food item is being properly stored/prepared before cooking.

Is the correct amount of food (portion) being cooked?

YES

Ensure that the correct amount is being cooked - not more or less than the recipe specifies.

Is the food item being prepared correctly and consistently? For example, bread cuts are straight and not “V” cuts, meat is sliced at correct thickness, pizza dough is correct consistency, etc.

YES

Ensure that the food item is properly prepared.

TROUBLESHOOTING

Page 70

46 TROUBLESHOOTING

Troubleshooting:

“Failed 240,” “No Card,” or “Write Fail” Message

when Loading or Saving a Menu

Verify the menu file is in the correct format. For USB, the menu file must be binary, named “menu.bin” and stored in a top-level folder named “TC-Menus”. Did this resolve the issue?

NO/Not Applicable

Try to load the menu again via USB and/or smart card. Did the menu load properly?

Is the connection from light ring to

YES

control board OK?

YES

Replace the cables. If the problem persists, replace the card reader. If the problem persists, replace the light ring. For part numbers and locations, see pages A-10 and A-11 for the Encore/pages A-26 and A-27 for the Encore 2.

Steam Present During or After Cooking

Perform both the daily and quarterly cleaning procedures (pages 5-7). Verify the ventilation holes on the rear vent catalyst housing cover are not blocked with debris.

Is the connection from smart card reader to light ring OK?

Ensure the cable is securely attached and not damaged.

Troubleshooting:

Check to see if the rear vent catalyst (or possibly main catalytic converter) is clogged. Clean and/or replace if necessary.

YES

Steam still present

Is the rear vent catalyst cover installed properly? (For the Encore see page A-2, item 3/Encore 2 page A-18, item 3).

Install the rear vent catalyst housing cover with the ventilation holes at the bottom.

Page 71

Encore Oven Schematic

and Wire Harnesses

(see page 61 for Encore 2)

Page 72

Page 73

Encore Oven Schematic and Wire Harnesses

This section provides an overall wiring schematic for the Encore oven. It also provides detailed drawings of each wire harness with labeled connectors.

The following drawings are provided:

- Relay Schematic (below)

- Oven Schematic (page 48)

- High Voltage Microwave Circuit 1 and 2 (page 50)

- Low Voltage (page 52)

- Heater (page 52)

- Cooling Fans (page 54)

- Line Voltage (pages 56-59)

Relay Schematic

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

Item Description Item Part Number

Relay (K1 - Filament) 101273

Relay (K2 - Anode) 101273

Relay (K3 - Monitor) 101273

Relay (K6 - Voltage) 101272

Relay (K7 - Magnetron Cooling Fan) 101274

Relay (K8 - EC Fan) 101274

For more detail, see pages A-14 and A-15 in the Appendix.

Page 74

EnCORE OVEn SCHEMATIC AnD WIRE HARnESSES

4948

EnCORE OVEn SCHEMATIC AnD WIRE HARnESSES

Page 75

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1208-1: Harness, Wiring, HV, MW Circuit 1

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

5150

ENC-1208-2: Harness, Wiring, HV, MW Circuit 2

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

Page 76

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1210: Harness, Wiring, Low Voltage

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

5352

ENC-1212: Harness, Wiring, Heater

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

Page 77

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1213: Harness, Wiring, Cooling Fans

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

5554

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

Page 78

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1214 View 1: Harness, Wiring, Line Voltage

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

5756

Continued on next page...

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

Page 79

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1214 View 2: Harness, Wiring, Line Voltage

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

5958

ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

Page 80

60 ENCORE OVEN SCHEMATIC AND WIRE HARNESSES

This page intentionally

left blank.

Page 81

Encore 2 Oven Schematic

and Wire Harnesses

(see page 47 for Encore)

Page 82

Encore 2 Oven Schematic and Wire Harnesses

This section provides an overall wiring schematic for the Encore oven. It also provides detailed drawings of each wire harness with labeled connectors.

The following drawings are provided:

- Relay Schematic (below)

- Oven Schematic (page 62)

- Heater (page 64)

- High Voltage Microwave Circuit 1 and 2 (page 66)

- Low Voltage (page 66)

- Line Voltage (pages 68-71)

- Cooling Fans (page 72)

Relay Schematic

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

Item Description Item Part Number

Relay (K1 - Filament) 101273

Relay (K2 - Anode) 101273

Relay (K3 - Monitor) 101273

Relay (K6 - Voltage) 101272

Relay (K7 - All Cooling Fans) 101273

For more detail, see pages A-30 and A-31 in the Appendix.

Page 83

EnCORE 2 OVEn SCHEMATIC AnD WIRE HARnESSES

SPLICE 1

180-240 VAC IN

A-5

C-3

QC10

BMSC

VOLTAGE

MODULE

2 2

SUPPLY

C-5

-V

C-19

POWER

24VDC

1 2 3

COLOR CODE (HIGH VOLTAGE/TENSION)

BK - HI-VOLTAGE WIRE FOR MAG 2

WH - HI-VOLTAGE WIRE FOR MAG 1

COLOR CODE (LOW/CONTROL VOLTAGE)

COLOR CODE (LINE VOLTAGE)

BK = HI-TEMP 240 VAC WIRE

OR = 240 LINE INPUT FOR TAP 3 ON TRANSFORMERS

BR - BROWN = LINE V (208/240)

BK - BLACK = 24 VDC COMMON

BL - BLUE = LINE V (208/240)

WH - WHITE = CONTROL OUTPUT

OR - ORANGE = STATUS INPUT

RD - RED = +24VDC

INTERLOCK

Analog Speed 0-10V

ENABLE

STATUS OK

I/O COM

I/O COMMON

MTR

(CCW)

TOP

BLWR

RED

GREEN

WHITE

BLACK

3 PHASE

240 VAC

OUT

C-9

C-10

C-6

C-5

QC5

C-7

C-20

C-11

C-1 (GRAY)

B-7 (BLACK)

B-1 (WHITE)

B-7 (BLACK)

A-18 (RED)

2 3

GND

SPEAKER

MONITOR

SECONDARY

SAFETY INTERLOCKS

PRIMARY

INTERLOCK

SWITCH

QC2QC1

K2 ANODE

F3: 20 AMPS CLASS CC

F2: 12 AMPS CLASS CC

F1: 12 AMPS CLASS CC

C-22

C-21

C-13

K1 (FILAMENT)

C-14

MANUAL RESET

OT1

(208)

(240)

FT2

(C)

(240)

BABABA

RELAY ASSY

BOTTOM HEATER

639

369

(-) D1 (+)

K3 (MONITOR)

C-11

C-4

(208)

K6 (VOLTS)

MAG

(240)

(208)

(240)

(208)

(240)

B-17

(208)

(C)

FT1

(208)

(240)

(C)

HV TRANSFORMERS

(208)

(240)

(C)

MAGNETRON OVERTEMP

212F (100C)

MAG 2

212F (100C)

OT3

MAG 1

MAG 2

OT4

MAG 1

(-) D2 (+)

QC9 RTD-TOP

A-8 A-7

A-9

.19UF3.91UF

A-6

CN6

DISPLAY

15151616---------

---

15J416

- - - ---

J11

J10

------

KEYPAD

14 14

---

SMART

READER

.19UF

C4- K6-B (VOLTAGE SELECTOR)/WHITE

C5- CDM-C & CDS-C (GROUND)/BLACK

C6- CDP-C (GRO UND)/BLACK

C7- SPEAKER GROUND/BLACK

C9-CDS-N.O STATUS/WHITE

C10- CDP -N.O STATUS/WHITE

C11- K3-B (MONITOR STATUS)/ORANGE

C12 (MAG-OT) STATUS/WHITE

C13- K1-B (FILAMENT TRAN SFORMERS)/WHITE

C14-K2-B (MAGNETRONS)/WHITE

C16- K7-B (MAGNETRON FANS)/WH ITE

C19- +24 VDC INPUT/RED

C20- SPEAKER (+)/RED

C21-K4-A2 (BOTTOM HEATER)/WHITE

C22-K5-B4 (TOP HEATER)/WHITE

B1- BLOWER ENABLE (J2-3)/WHITE

B8-BMSC GND (J2-2 &4)/BL ACK

B16-K8-B(EC FAN)/WHITE

B17-K1-A (+24 VDC OUTPUT)/RED

A7-RTD-3 INPUT/RED

A8- RTD-2 INPUT/ORANGE

A9- RTD-1 INPUT/ORANGE

A18- BLOWER 0-10 VDC/RED

C3- (VOLTAGE SELECTOR INPUT)/RED

C1- BLOWER STATUS/GRAY

A5-VOLTAGE MODULE GROUND/BLACK

C (22 PIN)

B (24 PIN)

A (20 PIN)

2412

.91UF

NOTE: NOT CONNECTED FOR INTERNATIONAL MARKETS

C-12

QC11 RTD-BOTTOM

A-2

A-4 A-3

A4- RTD-2 INPUT/RED

A3-RTD-3 INPUT/ORANGE

A2-RTD INPUT/ORANGE

A6-MAG O.T GROUND/BLACK

3000W/14.4 OHMS

TOP HEATER

3300W/14.4 OHMS

LFT. REAR FAN

RT. REAR FAN

TOP

BOTTOM

LIGHT RING

BOTTOM HEATER

TOP HEATER

TOP HEATER - L2 FILTER OU TPUT

BOTTOM HEATER - L2 ON F1

40VSK6

EMI FILT ER

40A

137

2 4 5 6

C-16

CENTER FAN

120F

LOAD

DIAGRAM

LOAD

DIAGRAM

BRN

MW1 CT

EMI FILTER

50A

EMI FILTER

MW2 CT

HX1 CKT

AUX CT

HX2 CT

BLK BLK GRN

HX2 CKT

HX1 CKT

AUX CT

MW2 CT

MW1 CT

6362

EnCORE 2 OVEn SCHEMATIC AnD WIRE HARnESSES

Page 84

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1401: Harness, Wiring, Heater

DANGER: Before removing any oven part, be sure the oven as completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

6564

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

Page 85

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1402: Harness, Wiring, HV, MW Circuits 1 and 2

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

6766

ENC-1403: Harness, Wiring, Low Voltage

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

Page 86

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1404 View 1: Harness, Wiring, Line Voltage

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

6968

Continued on next page...

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

Page 87

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1404 View 2: Harness, Wiring, Line Voltage

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

7170

ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

Page 88

72 ENCORE 2 OVEN SCHEMATIC AND WIRE HARNESSES

ENC-1405: Harness, Wiring, Cooling Fans

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

Page 89

Encore Appendix: Replacing

Oven Components

(see page A-61 for Encore 2)

Page 90

Page 91

Replacing Oven Components

This appendix provides illustrations for removing serviceable items, as well as the item numbers and descriptions for those items. It also includes the item numbers and descriptions for the fasteners used to secure each component to the oven chassis.

The appendix is divided into the following sections:

- Oven Exterior (pages A-2 through A-3)

- Impingement System (pages A-4 through A-5)

- Microwave System (pages A-6 through A-7)

- Oven Door and Related Parts (A-8 through A-9)

- Control System (A-10 through A-11)

- Power Components (A-12 through A-15)

A-1

If you have any questions that are not addressed in this manual or appendix, please contact TurboChef Customer Service at 800.90TURBO or +1 214.379.6000.

ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Page 92

A-2 ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Oven Exterior

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

Door removed for clarity

High-Limit

Reset Button

Page 93

A-3

Figure Reference #

1 Badge, Logo, Encore/Encore 2 ENC-1192 Nut, Push, 1/8” 101293 (qty 2)

2 Catalytic Converter, Vent Tube RWD-9191 None None

3 Cover, Exhaust Tube ENC-1080 Screw, #8 x 3/8, Ph Mod Truss Hd, Cres 101682 (qty 6)

4 Cover, Left Side, Black ENC-1109-9005

5 Cover, Right Side, Black ENC-1108-9005

6 Cover, Top, Black ENC-1133-9005

7 Filter, Air ENC-1114 None None

8 Filter Bracket ENC-1113 Screw, #8 x 3/8, Ph Mod Truss Hd, Cres 101682 (qty 4)

9 Housing, Exhaust Tube ENC-1079 Screw, #8 x 3/8, Ph Mod Truss Hd, Cres 101682 (qty 6)

10 Leg, Plastic, Black (x4) HHB-3205 None None

11 Lower Front Panel ENC-1103-T001 None None

12 Pad, Abrasive, Non-Slip (x4) NGC-1187 None None

13 Panel, Rear ENC-1105 Screw, #8 x 3/8, Ph Mod Truss Hd, Cres 101682 (qty 7)

Item Description Item Part Number Fastener Description Fastener Part Number(s)

Screw, #8 x 3/8, Serr Ph Truss Hd, Bk Zinc Screw, #8 x 1/2, Security, Torx Hd, Bk Oxide

Screw, #8 x 3/8, Ph Mod Truss Hd, Cres Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl

101369 (qty 7) 102756 (qty 1)

101682 (qty 5) 101688 (qty 4)

14 Rack, Oven ENC-1216 None None

ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Page 94

A-4 ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Impingement System

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

NOTE: For clarity, some components have been removed from the illustrations below.

Page 95

A-5

Figure Reference #

1 Blower Motor NGC-1025 Nut, 1/4 - 20, Serr Hex Flange, Plated 100906 (qty 6)

2 Blower Motor Speed Controller CON-3010 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 1)

3 Bracket, BMSC HHB-8268 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 4)

4 Bracket, Catalytic Converter (qty 2) ENC-1148 Screw, #8 x 3/8, Ph Mod Truss Hd, Cres 101682 (1 per)

5 Bracket, Solid State Relay ENC-1102 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 2)

6 Catalytic Converter ENC-1147 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 4)

7 Clip, BMSC Bracket (x2) HHB-8269 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 2 each)

8 Gasket, Heater, Top NGC-1043 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 10)

9 Heater, Bottom ENC-3002

10 Heater, Top NGC-3011 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 10)

11 Jetplate, Bottom ENC-1066 None None

12 Relay, Solid State (K4/K5 - Heaters) 101286 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 2)

13 RTD, Cook Cavity, 3” (x2) HHC-6517-2 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 2 / heater)

14 Thermostat, High-Limit, 300°C 102075 Screw, M4 x 0.7 x 8, PPHD, Int Tooth, SS 101672 (qty 2)

Item Description Item Part Number Fastener Description Fastener Part Number

Retaining Ring, .750” ID, SS, Series SH Washer, Shim, .752” x 1.12” x .033”

101312 (qty 2) 102449 (qty 2)

To remove the catalytic converter:

1. Ensure the oven cavity is completely cool.

2. Remove the screws marked “A” and the catalytic converter will drop beneath the holder.

3. Maneuver the catalytic converter beneath the bottom heater.

4. Lift the bottom heater and remove the catalytic converter.

ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Page 96

A-6 ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Microwave System

DANGER: Lethal voltage is present while the microwave circuit is on. Before servicing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

NOTE: For clarity, some components have been removed from the illustrations below.

Item 16: Waveguide to Cook Cavity Wall Detail

Cook Cavity Wall

Acorn Nut (#8-32)

Waveguide

Page 97

A-7

Figure Reference #

1 Bracket, Capacitor (x2) 100134 Screw, #6-32 x 3/8, Int Tooth, PPH, SS 102911 (qty 1 each)

2 Bracket, HV Components, Right ENC-1161 Nut, #10-32, Keps, Ext Tooth, SS 102963 (qty 2)

3 Bracket, HV Components, Left ENC-1167 Nut, #10-32, Keps, Ext Tooth, SS 102963 (qty 2)

4 Capacitor, .91 uf, 2500 VAC (x2) 100232 Bracket, Capacitor See Item 1

5 Diode, High Voltage (x2) 100481 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 2 each)

6 Duct, Cooling, Magnetron, Out (x2) ENC-1036 None None

7 Duct, Cooling Fan, Left ENC-1037 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 4)

8 Duct, Cooling Fan, Right ENC-1033 Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 6)

9 Fan, Cooling, Magnetron (x2) TC3-0433 Screw, #10-32 x 1/2, Hex Wshr Hd, Type 23 101408 (qty 2 each)

10 Finger Guard, Cooling Fans (x2) 100086 Screw, #10-32 x 1/2, Hex Wshr Hd, Type 23 101408 (qty 2 each)

Not Shown Jumper, Capacitor (Intl only) (x2) i5-9378 None None

11 Magnetron (x2) NGC-3015 Nut, #10-32, Serr Hex Flange, Zinc 100913 (qty 4 each)

12 Pad, Insulator, Mag Thermostat (x2) NGC-1163 Screw, #6 x 3/8, PPHD, Drill Point, Zinc 101684 (qty 2 each)

See page A14 Relay (K1 - Filament) 101273 Nut, #6-32, Keps Hex, Ext Tooth, Cres 102961 (qty 2)

See page A14 Relay (K2 - Anode) 101273 Nut, #6-32, Keps Hex, Ext Tooth, Cres 102961 (qty 2)

Item Description Item Part Number Fastener Description Fastener Part Number

See page A14 Relay (K7 - Magnetron Cooling Fan) 101274 Nut, #6-32, Keps Hex, Ext Tooth, Cres 102961 (qty 2)

13 Thermostat, Magnetron (x2) 104228 Screw, #6 x 3/8, PPHD, Drill Point, Zinc 101684 (qty 2 each)

16 Waveguide Kit (x2)* ENC-3008 Included Included

17 Waveguide Cover (x2) i1-9462 None None

18 Waveguide Gasket (x2)* i1-9331 Nut, #10-32, Serr Hex Flange, Zinc 100913 (qty 9 each)

19 Waveguide Seal (x2)* i1-9486 None None

Not Shown Harness, Wiring, HV, MW Circuit 1 ENC-1208-1 None None

Not Shown Harness, Wiring, HV, MW Circuit 2 ENC-1208-2 None None

Transformer, Filament, 60 Hz (x2) Transformer, Filament, 50 Hz (x2)

Transformer, HV, 60 Hz (x2) Transformer, HV, 50 Hz (x2)

NGC-3061-1 NGC-3061-2

NGC-3062-1 NGC-3062-2

Screw, #8 x 1/2, Serr Ph Truss Hd, Sheet Mtl 101688 (qty 4 each)

* Items 17-19 are also included with item 16.

ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Page 98

A-8 ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Oven Door and Related Parts

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

NOTE: For clarity, some components have been removed from the illustrations below.

5 6

* When replacing the primary switch: a.) Discard one of the switches supplied with kit NGC-3033 b.) Use the shorter screws (see Figure below) c.) Follow all instructions in the provided field service bulletins FSB-10057 and FSB-10094 d.) Discard FSB-10055

Spring, Door Latch, Primary Switch

Toggle, Latch, Primary Switch

Plate, Door Switch, Primary

Pin, Clevis, 3/16 Dia x 1”, P Switch

Use shorter screws*

Bracket, Latch, Primary Switch

Stop, Paddle, Door Switch, Primary

Interlock Switch (Primary)*

Page 99

A-9

Figure Reference #

See page A2 Badge, Logo, Encore/Encore 2 ENC-1192 Nut, Push, 1/8 101293 (qty 2)

10 Kit, Door Switch, Primary* NGC-3033* Included with Kit Included with Kit

11 Kit, Shunt Plate ENC-3007 Included with Kit Included with Kit

13 Plate, Door Switch, S/M (x2) NGC-1126

See page A14 Relay (K3 - Monitor) 101273 Nut, #6-32, Keps Hex, Ext Tooth, Cres 102961 (qty 2)

Item Description Item Part Number Fastener Description Fastener Part Number

1 Catch, Latch ENC-1131 Screw, #8 x 3/8, Security, Torx Hd 102748 (qty 2)

2 Cover, Door, Gray ENC-1121-T001 Screw, #8 x 5/8, Ph Mod Truss Hd, Cres 101376 (qty 11)

3 Door, Entire Assembly ENC-3003 Screw, #10-32 x 1/2, Hex, Serr, Zinc 101373 (qty 4)

4 Handle, Door, Black ENC-1122-9005 Screw, #8 x 5/8, Ph Mod Truss Hd, Cres 101376 (qty 7)

5 Hinge, Left i1-3220-1 Screw, #8-32 x 5/8, PFH, 100 Deg, SS 102811 (qty 3)

6 Hinge, Right i1-3220-2 Screw, #8-32 x 5/8, PFH, 100 Deg, SS 102811 (qty 3)

7 Hole Plug, Black, 5/8” Dia (x4) 101195 None None

8 Interlock Switch (Monitor) 102013 Screw, #4-40 x 3/4, Sems, PPHD, SS 102904 (qty 2)

9 Interlock Switch (Secondary) 102013 Screw, #4-40 x 3/4, Sems, PPHD, SS 102904 (qty 2)

Kit, Switch Offset, Shim and Replacement Tab (x2)

i1-3207 Screw, #4-40 x 3/4, Sems, PPHD, SS 102904 (qty 2)

Screw, #4-40 x 3/4, Sems, PPHD, SS Screw, #8-32 x 3/8, PPHD, Int Sems, SS

102904 (qty 2 each) 102921 (qty 1 each)

14 Screw, Door, Buttonhead (x2) ENC-1220 None None

15 Stop, Paddle, Door Switch, S/M (x2) NGC-1324 Screw, #4-40 x 3/4, Sems, PPHD, SS 102904 (qty 2 each)

ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Page 100

A-10 ENCORE APPENDIX  REPLACING OVEN COMPONENTS

Control System

DANGER: Before removing any oven part, be sure the oven has completed “cooling down” (see “Step 9” on page 11) and is removed from the power source.

NOTE: For clarity, some components have been removed from the illustrations below.

TurboChef ENCORE 2 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual