Turbo Chef Technologies i5 service manual Control System

Control System

This section contains information about the following components:

-Control board

-Display

-Electrical compartment cooling fans

-Electrical compartment cooling fan thermostat

-Electrical compartment thermocouple

-EMI Filter

-Fuses

-High-limit thermostat

-Keypad

-Magnetron cooling fans

-Magnetron thermostats

-Power Supply

-Relay (K1 - Filament)

-Relay (K2 - Anode)

-Relay (K3 - Monitor)

-Relay (K6 - Voltage)

-Relay (K7 - Mag fan)

-Relay (K8 - Stirrer)

-RTD

-Smart card reader

-Solid state relay (K4/K5 - Heater)

-Speaker

-USB port

-Voltage sensor

-Wire harness

Control Board

The control board controls each electrical compo- nent of the oven. See page 51 for a schematic. 24 VDC can be measured at pin 2 of the J7 connector.

Display

The vacuum fluorescent display is the primary user interface.

Electrical Compartment Cooling Fans

The cooling fans (located in the rear of the oven) are actuated by the cooling fan thermostat when the temperature of the electrical compartment

Electrical Compartment Cooling Fan Thermostat

The cooling fan thermostat actuates the rear cooling fans when the electrical compartment temperature reaches 120ºF (49ºC).

Electrical Compartment Thermocouple

The electrical compartment thermocouple is a type “K” thermocouple, which measures the temperature of the electrical compartment. If the temperature of the electrical compartment is above 158ºF (70ºC), an F6: EC TEMP” fault will display. The control board checks the temperature of the electrical compartment once every 60 seconds.

EMI Filter

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

Fuses

All four fuses are 12-amp, class CC.

The F1 fuse (via blue wire) or F2 fuse (via brown wire) is designed to blow in case of an over-current situation relative to the following components:

-BMSC motor controller

-Electrical compartment cooling fans

-Filament transformers

-Magnetron cooling fans

-Power supply

-Stirrer motor

The F3 fuse is designed to blow in case of an over- current situation relative to the left microwave system (magnetron, high-voltage transformer, diode, capacitor).

The F4 fuse is designed to blow in case of an over- current situation relative to the right microwave system (magnetron, high-voltage transformer, diode, capacitor).

33

OVEN SYSTEMS

reaches 120ºF (49ºC).