Control System; Cooling Fans; Display, Tft (For Non-Touch Enabled Ovens); Display (Touch) And Ui Control Board (Phoenix) - TurboChef sota Service Manual

Control System

This section contains information about the
following components:

- Cooling fans

- Display, TFT (For Non-Touch Enabled Ovens)

- Display (Touch) and UI Control Board (Phoenix)

- Electrical compartment cooling fan thermostat

- Electrical compartment thermocouple

- EMI filter

- Ethernet extension cable

- Fuses
- High-limit thermostat
- I/O Control board (SAGE)
- Keypad (For Non-Touch Enabled Ovens)
- LED Light Ring (So ˇ ta only)
- Magnetron thermostats
- Power supply, 24 VDC
- Relay (K1 - Filament)
- Relay (K2 - Magnetron cooling fans)
- Relay (K3 - Stirrer)
- Relay (K6 - Voltage)
- Relay (K7 - Monitor)
- Relay (K8 - Anode)
- RTD, 3.0"
- Solid state relay (K4/K5 - Heater)
- Speaker
- USB/Smart card reader
- Voltage sensor
- Wire harness
Cooling Fans
There are seven total cooling fans. The three fans
across the top of the back panel are inlet fans and
the other four are outlet fans.
The four electrical compartment cooling fans on
the back panel and the one underneath the oven
are actuated by the cooling fan thermostat when
the temperature of the electrical compartment
reaches 120 º F (49 º C). The two magnetron cooling
fans (located on each side of the oven) are actuated
by the K2 relay when the magnetrons are in opera-
tion, and remain on for four minutes and fifteen
seconds after the magnetrons turn off. They oper-
ate at:
- 208/240 VAC (60 Hz with voltage sensing)
- 220 VAC (60 Hz with no voltage sensing)
- 230 VAC (50 Hz installations)
Display, TFT (For Non-Touch Enabled Ovens)
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.
Display (Touch) and UI Control Board (Phoenix)
On touch-enabled ovens, the touch display is the
primary user interface. It is a 7 in. capacative touch
screen with a tempered protective glass cover.
Included with the display is the UI control board
(Phoenix). The Phoenix control board handles all
UI-related tasks, including graphics, menu and data
storage, and programing/data transfer, such as USB,
smart card, and Wi-Fi.
Electrical Compartment Cooling Fan
Thermostat
The cooling fan thermostat actuates the five rear
cooling fans when the electrical compartment
temperature reaches 120 º F (49 º C).
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 158 º F
(70 º C), 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.
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.
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