TurboChef 2020 HIGH h User manual

Accelerating the World of CookingTM
Service Manual
FOR THE TURBOCHEF 2020 HIGH hCONVEYOR OVEN
© 2008 TurboChef Technologies, Inc.

For further information, call
800.90TURBO
or
+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.

Table of Contents
Safety Information
Important Safety Information – Please Read First i
General Safety Information i
Reducing Fire Risk i
Preventing Oven Damage ii
Grounding Instructions ii
Power Cord Replacement ii
Specifications and installation
Dimensions 1
Electrical Specifications 1
Packaging 2
Certifications 2
Oven Construction 2
Installation Instructions 2
Delivery and Initial Inspection 2
Lifting the Oven 2
Oven Location and Placement 2
Stacking Ovens 3
Installation Near Open Heat Source 4
Ventilation Requirements 4
Cleaning - Daily and Weekly
Daily Cleaning Instructions 5
Weekly Cleaning Instructions 6-8
Standard Oven Operation
Oven Controls 9
Cooking a Product 10
Editing a Cooking Profile 12
Changing a Cooking Profile Name 12
Adjusting the Belt Speed 13
Adjusting the Temperature13
Adjusting the Top and Bottom Air 13
Oven Modes
Config Mode 15
Smart Card Screen (Loading a Menu) 15
Accessing the Fault Count Screen 15
Accessing the Setup Mode 15
Setup Mode 15
Changing the Display Temperature16
Edit Modes Select Screen 16
Changing the Display Language 16
Info Screen 16
Updating the Firmware16
Test Mode 17
Accessing the Heat Control Screen 17
Accessing the Belt Control Screen 18
Manipulating the Top and Bottom Blowers 18
Viewing the Status Indicators 18
Entering a New Serial Number 19

Initiating a Burn-In Test 20
Erasing Oven Settings 20
Viewing the Serial Number 20
Oven Systems
The Control System 21
Control Board21
Display 21
EMI Filter 21
Fuses 21
High-Limit Thermostat 21
Keypad 21
Power Supply - 24VDC 21
Relays, K6 (Heaters) and K7 (Conveyor Direction) 21
Relay, Solid State - K5/K4 Heaters 22
RTD 22
Smart Card Reader 22
Speaker 22
Thermostats - 120ºF (Close on Rise) 22
Wire Harness 22
The Conveyor System 23
Gear Drive (Conveyor Motor) 23
Gear Drive (Conveyor Motor) Speed Controller (CMSC) 23
The Convection System 24
Blower Motor 24
Blower Motor Speed Controller (BMSC) 24
Heaters 24
Troubleshooting
Overview of Troubleshooting 25
Fault Code Descriptions 25
Fault Code T
roubleshooting - F1:BLOWER FAULT27-28
Fault Code Troubleshooting - F2: LOW COOK TEMP 29
Fault Code T
roubleshooting - F5: CC OVER TEMP 30
Fault Code Troubleshooting - F6: EC OVER TEMP 31
Fault Code T
roubleshooting - F7: RTD FAULT32
Fault Code Troubleshooting - F8: HIGH LIMIT TRIPPED 32
Fault Code Troubleshooting - F9: BELT FAULT (Total Belt Run Failure) 33
Non-Fault Code Troubleshooting - Cooling System Issue 34
Non-Fault Code Troubleshooting - Food Not Cooking Properly 35
Non-Fault Code Troubleshooting - No Display - Screen is Blank 36
Non-Fault Code Troubleshooting - No Keypad Input 36
Schematics
Oven Schematic (Delta 4-Pin Plug Configuration) 37
Oven Schematic (Wye 5-Pin Plug Configuration) 38
Pin-out 39
CMSC Parameters 40
Appendix A - Replacing Oven Components
Comprehensive Part List A-1
Replacing Items - Outside of End Bells A-4
Replacing Items - Left End Bell A-6
Replacing Items - Right End Bell A-8

SAFETY INFORMATION
Important Safety Information – Please Read First
Improper installation, adjustment, alteration, service, or maintenance of this equipment can cause property
damage, injury, or death. Thoroughly read the installation, operating, and maintenance instructions before
installing or servicing this equipment. Strictly adhere to the following safety information to reduce the
risk of:
oDamage to the oven
oDamage to property near the oven
oPersonal injury
oBurns
oFire
oElectric shock
General Safety Information
oUse this appliance only for its intended uses as described in this manual.
oOnly qualified service personnel should service this appliance. Contact the nearest authorized service
facility for examination, repair, or adjustment.
oAlways ensure the oven is disconnected from the power supply before servicing, repairing, or adjusting
any components or parts.
o
xDO NOT place the cord near heated surfaces.
o
xDO NOT store or use flammable vapors or liquids (e.g., gasoline) in the vicinity of this appliance.
o
xDO NOT allow children to use this appliance.
o
xDO NOT place corrosive chemicals or vapors in this appliance. It is not designed for industrial or
laboratory use.
o
xDO NOToperate this appliance if it:
Has a damaged cord or plug
Is not working properly
Has been damaged or dropped
o
xDO NOTcover or block any openings on this appliance.
o
xDO NOTstore this appliance outdoors.
o
xDO NOTuse this appliance near water.
o
xDO NOTimmerse this appliance or any of its components (e.g., cord, plug, etc.) in water.
o
xDO NOTlet the cord hang over the edge of a table or counter.
Reducing Fire Risk
If materials inside the oven ignite or if smoke is observed,
1. Turn off the oven.
2. Disconnect the power cord or shut off power at the fuse/circuit breaker panel.
oCarefully attend the oven if paper, plastic, or other combustible materials are placed inside the oven
to facilitate cooking.
o
xDO NOTleave items in the cook cavity when the oven is not in use.
o
xDO NOTcook items wrapped in cling wrap or plastic film.
o
xDO NOT overcook food.
i

ii SAFETY INFORMATION
Preventing Oven Damage
oWhen servicing this appliance, do not tear insulation to get to components. Rather, find the edge of
the insulation and remove the tape that holds it in place.
oClean the oven daily.
oClean the oven only with TurboChef Oven Cleaner.
o
xDO NOTclean with a water jet.
o
xDO NOTallow cleaning solution or water to remain in the cook cavity longer than necessary.
Grounding Instructions
WARNING: Improper grounding increases the risk of electric shock.
This appliance must be grounded. The cord is equipped with a grounding wire and plug, which in the
event of an electrical short circuit, reduce the risk of electric shock by providing an escape wire for the
electric current. The wire must be plugged into an outlet that is properly installed and grounded.
Consult a qualified electrician or serviceman to determine whether or not the appliance is properly
grounded.
o
xDO NOTuse an extension cord. If the power supply cord is too short, request a qualified electrician
or serviceman to install an outlet near the appliance.
Power Cord Replacement
To avoid potential hazards, only the manufacturer, its service agent, or a similarly-qualified person should
replace a damaged power cord.

Specifications and Installation