TurboChef 3240 User manual

Accelerating the World of CookingTM
Service Manual
FOR THE TURBOCHEF 3240 HIGH HCONVEYOR OVEN

For further information, call
800.90TURBO
or
+1 214.379.6000

The information contained in this manual is important for the proper installation, use, mainte-
nance, 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
Table of Contents
Safety Instructions
Important Safety Information - Please Read First i
General Safety Information i
Preventing Oven Damage i
Reducing Fire Risk ii
Grounding Instructions ii
Power Cord Replacement ii
Specifications and Startup
Oven Overview 1
Certifications 2
Dimensions 2
Oven Construction 2
Theory of Operation 2
Power Specifications 2
Ventilation Requirements 2
Gas Derating 2
Gas Setup 3
Reading the Incoming Gas Pressure (Static) 3
Reading the Gas Pressure at 100% Flame 3
Reading the Gas Pressure at Minimum Flame 4
Reading the Operating Gas Pressure 4
Confirming Proper Closure of all Taps 4
Cleaning
Cleaning the Oven 5
Supplies and Equipment 5
Daily Cleaning Procedures 5
Deep Cleaning Procedures 6-8
Standard Oven Operation
Oven Controls 9
Cooking a Product 10
Editing a Cooking Profile 12
Changing a Cooking Profile’s Name 12
Adjusting the Belt Speed 13
Adjusting the Temperature 13
Adjusting the Top and Bottom Air 13

TABLE OF CONTENTS
Oven Modes
Config Mode 15
Smart Card Screen 15
Updating the Firmware 15
Accessing the Fault Count Screen 16
Accessing the Setup Mode 16
Accessing the Test Mode 16
Setup Mode 16
Changing the Display Temperature 16
Edit Option Screen 16
Changing the Display Language 17
Info Screen 17
Test Mode 17
Accessing the Burner 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 all Oven Settings 20
Clearing the Fault Counts 20
Viewing the Serial Number 20
Oven Systems
The Control System 21
Control Board 21
Display 21
EMI Filter 21
Fuses 21
High-Limit Thermostat 21
Idle Button 21
Keypad 21
Power Supply - 24VDC (Domestic) 21
Power Supply - 24VDC (International) 22
K3 Relay - Gas 22
K4 Relay - Ignition 22
RTD 23
Smart Card Reader 23
Speaker 23
Thermostat - 120F (Close on Rise) 23
Wire Harness 23
The Conveyor System 23
Gear Drive (Conveyor Motor) 23
Gear Drive (Conveyor Motor) Speed Controller (CMSC) 24

TABLE OF CONTENTS
The Blower System 25
Blower Motor 25
Blower Motor Speed Controller (BMSC) 25
The Burner System 26
Air Pressure Switch 26
Burner Transformer 26
Combustion Blower 27
Modulating Gas Valve 27
Ignition Module 27
Troubleshooting
Overview of Troubleshooting 29
Fault Code Descriptions 29
Fault Code Troubleshooting 31
F1: Blower Fault 31
F2: Low Cook Temp 32
F3: No Flame 34
F5: CC Over Temp 36
F6: EC Over Temp 37
F7: RTD Fault 38
F8: High Limit Tripped 38
F9: Belt Fault 39
F10: Air Pressure Switch Fault 40
Non-Fault Code Troubleshooting 41
Cooling System Issue 41
Food Not Cooking Properly 42
No Display 43
No Keypad Input 43
Schematics
Schematic 45
Pin-out 46
Controller Codes 47
Appendix A - Replacing Oven Components
Comprehensive Part List A-1 - A-4
Replacing Items - No Panel Removal Required A-6
Replacing Items - Right End Bell A-8
Replacing Items - Left End Bell A-12
Replacing Items - Burner Compartment Cover A-14

iSAFETY INSTRUCTIONS
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:
- Damage to the oven
- Damage to property near the oven
- Personal injury
- Burns
- Fire
- Electric shock
General Safety Information
aUse this appliance only for its intended uses as described in this manual.
aOnly qualified service personnel should service this appliance. Contact the nearest authorized service
facility for examination, repair, or adjustment.
aAlways ensure the oven is disconnected from the power supply before servicing, repairing, or adjust-
ing any components or parts.
X DO NOT place the cord near heated surfaces.
X DO NOT store or use flammable vapors or liquids (e.g., gasoline) in the vicinity of this appliance.
X DO NOT allow children to use this appliance.
X DO NOT place corrosive chemicals or vapors in this appliance. It is not designed for industrial or
laboratory use.
X DO NOToperate this appliance if it:
-Has a damaged cord, plug, or gas hose
-Is not working properly
-Has been damaged or dropped
X DO NOTcover or block any openings on this appliance.
X DO NOTstore this appliance outdoors.
X DO NOTuse this appliance near water.
X DO NOTimmerse this appliance or any of its components (e.g., cord, plug, etc.) in water.
X DO NOTlet the cord hang over the edge of a table or counter.
X DO NOTwork near the appliance with long hair, loose clothing, or dangling jewelry.
Preventing Oven Damage
aWhen 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.
aClean the oven daily (page 5).
aClean the oven only with TurboChef approved cleaner.
X DO NOTclean with a water jet.
X DO NOTslam or mishandle the oven window.
X DO NOTfrequently open and close the window to check the cook status of the food.
X DO NOTallow cleaning solution or water to remain in the cook cavity longer than necessary.

SAFETY INSTRUCTIONS
ii
Reducing Fire Risk
If materials inside the oven ignite or if smoke is observed,
1.Keep the oven window closed.
2.Turn off the oven.
3.Disconnect the power cord or shut off power at the fuse/circuit breaker panel.
aCarefully attend the oven if paper, plastic, or other combustible materials are placed inside the oven
to facilitate cooking.
X DO NOTleave items in the cook cavity when the oven is not in use.
X DO NOTcook items wrapped in cling wrap or plastic film.
X DO NOT overcook food.
X DO NOTstore (or use) gasoline or any other flammable vapors or liquids near this appliance.
If a gas leak is noticed,
X DO NOTattempt to light or operate any appliance.
X DO NOToperate any electronic device.
aImmediately use an exterior phone to contact your gas supplier.
aIf you cannot contact your gas supplier, contact your local fire department.
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.
X DO 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.

iii SAFETY INSTRUCTIONS
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