Turbo Chef Technologies HHB-8136 Color Code Line Voltage, Color Code Low/Control Voltage

HIGH H BATCH SCHEMATIC 63

H H B OVEN SCHEMATIC

Figure 61. Inside of fold-out page. Rev 2 Board, VFD Display, Single Phase, 280/240 VAC, 60 Hz

NOTE: Schematic shows the oven with door open and without power applied.

Color Code (Line Voltage)

BL – Blue = Line V (208/240)

BR – Brown = Line V (208/240)

OR – Orange = 240 Line Input for Tap 3 on all Transformers

BK – Black = Hi-Temp 240 VAC Wire

Color Code (Low/Control Voltage)

BK – Black = 24 VDC Common

OR – Orange = Status Input

WH – White = Control Input

RD – Red = +24 VDC

Line Voltage Components

Blower Motor

Blower Motor Controller

Cooling Fans

Fuses

Heater Element

Power Supply, +24VDC

Rack Oscillator Motor

Relay

Solid State Relay

Thermostat – Cooling Fan

Thermostat – Hi-Limit

Voltage Sensor Module

Wiring Harness – Line Voltage

Low Voltage Components

Cable – Smart Card Connector

Display, VFD

Door Switch

I/O Control Board

Keypad

Ribbon Connector – Display

Smart Card Reader

Thermocouple – CC

Thermocouple – EC

Wiring Harness – Low Voltage

I/O CONTROL BOARD COMPONENT IDENTIFICATION

AND TEST POINT LOCATIONS

Figure 62, page 64

J2	40-Pin Connector for LV Harness
J3	3-Pin Connector for VFD Display
J4	14-Pin Connector for Keypad
J5	26-Pin Connector for Display Data
J6	RS-232 Connector
	(for computer hookup, if necessary)
RJ11	Connector for Smart Card Cable
U15	EPROM Socket
P1	Voltage Reference 0-5 VDC
P3	Blower Controller Pin Configuration
SKP1	Beeper
R51	Beeper Volume Adjustment