Voltage Sensor; Control System Troubleshooting; Filtering System; Catalytic Converter - TurboChef i3 Service Manual

34 OVEN SYSTEMS

Voltage Sensor

For North America oven models, the oven will detect
208 or 240 incoming voltage.
The initial voltage selection is typically completed
before the oven is used by the customer. However, if
incoming voltage for the store is different than the pre-
set 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.

Control System Troubleshooting

Potentially, any fault may occur in relation to the
control system. See section "Fault Code
Troubleshooting," pages 37-42.
Potentially, any one of the issues diagnosed in the
section "Non-Fault Code Troubleshooting" may
occur in relation to the control system. See section
"Non-Fault Code Troubleshooting," pages 43-48.

Filtering System

This section contains information about the
following components:

- Catalytic converter

- Drain pan

- Air filter

- Vent catalyst

Catalytic Converter
The catalytic converter, a VOC type catalyst, is located
behind the rear 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 CO
through the catalytic converter. The catalyst will oper-
ate most efficiently at temperatures above 475 º F
(246 º C).
and H O as it passes
2 2
The catalytic converter is self-cleaning. Under normal
conditions, it does not need to be cleaned and is not
considered to be a component that requires scheduled
maintenance. Furthermore, the catalyst material is very
sensitive to certain chemical compounds. Irreversible
damage can occur if the catalyst is exposed to cleaning
chemicals containing phosphates, NaOH, silicates, Na
and Potassium Salts. These chemicals are found in most
commercial degreasers and cleaners; therefore, use only
TurboChef ® Oven Cleaner when cleaning the oven.
Drain Pan
The drain pan collects debris as it is flushed through
the bottom of the cook cavity.
Air Filter
The filter is located on the back of the oven. It helps
prevent debris from getting into the electrical
compartment. This component 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 8, step 13 for detailed instructions.
Vent Catalyst
In addition to the main catalytic converter, the i3 oven
contains a catalyst in the vent tube path. This catalyst
further assists in the breakdown of grease and particu-
late matter before the excess air enters the atmosphere.

Filtering System 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 42)
- Fire in the cook cavity (if catalytic converter is
clogged due to oven not being cleaned regularly).
- Electrical component failure (if filter is not
present or is clogged).
- Undesirable flavor transfer.
- Undesirable odor emissions.