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VC4E & VC6E Series Full Size

Electric Convection Ovens

VC4ES ML-126743

VC4ED ML-126744

VC4EC ML-126745

VC6ES ML-126746

VC6ED ML-126747

VC6EC ML-126748

- NOTICE -

This Manual is prepared for the use of trained Hobart Service

Technicians and should not be used by those not properly

qualified.

This manual is not intended to be all encompassing. If you have

not attended a Hobart Service School for this product, you should

read, in its entirety, the repair procedure you wish to perform to

determine if you have the necessary tools, instruments and skills

required to perform the procedure. Procedures for which you do

not have the necessary tools, instruments and skills should be

performed by a trained Hobart Service Technician.

The reproduction, transfer, sale or other use of this manual,

without the express written consent of Hobart, is prohibited.

This manual has been provided to you by ITW Food Equipment

Group LLC ("ITW FEG") without charge and remains the property

of ITW FEG, and by accepting this manual you agree that you will

return it to ITW FEG promptly upon its request for such return at

any time in the future.

SERVICE MANUAL

A product of Vulcan-Hart 3600 North Point Blvd Baltimore, MD 21222

F25105 Rev. D (0619)

TABLE OF CONTENTS

SERVICE UPDATES ....................................................................................... 4

SERVICE UPDATES - VC4E / VC6E .................................................................... 4

TIS DOCUMENT LIST - VC4E AND VC6E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

GENERAL .................................................................................................. 6

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

INSTALLATION ........................................................................................ 6

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CLEANING ............................................................................................. 6

LUBRICATION ......................................................................................... 6

TOOLS ................................................................................................. 7

SPECIFICATIONS ...................................................................................... 7

REMOVAL AND REPLACEMENT OF PARTS ............................................................... 8

COVERS AND PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

CONTROL PANEL COMPONENTS ..................................................................... 9

COMPONENT PANEL COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

TEMPERATURE PROBE (SOLID STATE CONTROL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

HEATING ELEMENTS ENDING AT SERIAL NUMBER 481916863 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

HEATING ELEMENTS STARTING AT SERIAL NUMBER 481916864 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

BLOWER AND MOTOR ENDING AT SERIAL NUMBER 481916863 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

BLOWER AND MOTOR STARTING AT SERIAL NUMBER 481916864 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

DOOR SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

DOOR WINDOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

OVEN DOORS AND BEARINGS (INDEPENDENT DOORS) ENDING AT SERIAL

NUMBER 481916782 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

OVEN DOORS (INDEPENDENT DOORS) STARTING AT SERIAL NUMBER 481916783 . . . . . . . . . . . . . . . 19

OVEN DOORS (SIMULTANEOUS DOORS) ENDING AT SERIAL NUMBER 481916783 . . . . . . . . . . . . . . . . 20

OVEN DOORS (SIMULTANEOUS DOORS) STARTING AT SERIAL NUMBER 481916783 . . . . . . . . . . . . . . 21

ROLLER LATCH ASSEMBLY (INDEPENDENT DOORS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

DOOR CATCH ROLLER ASSEMBLY (INDEPENDENT DOORS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

MECHANICAL (KX) THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

HIGH LIMIT THERMOSTAT ........................................................................... 23

INTERIOR LIGHTS (REAR MOUNTED, ROUND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

INTERIOR LIGHTS (SIDE MOUNTED, SQUARE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

COOLING FAN ........................................................................................ 26

SERVICE PROCEDURES AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SOLID STATE TEMPERATURE CONTROL CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

MECHANICAL (KX) THERMOSTAT CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

SOLID STATE TEMPERATURE CONTROL TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

TEMPERATURE PROBE TEST (SOLID STATE CONTROL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

HEATING ELEMENT TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

BLOWER ADJUSTMENT .............................................................................. 33

DOOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

DOOR STRIKE ADJUSTMENT (INDEPENDENT DOORS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

DOOR CATCH ROLLER ADJUSTMENT (INDEPENDENT DOORS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

DOOR SWITCH ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

DOOR CHAIN ADJUSTMENT (SIMULATANEOUS DOORS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

COMPUTER CONTROL ............................................................................... 37

COMPUTER CONTROL TEMPERATURE CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

COMPUTER CONTROL OPERATIONAL TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

SERVICE PROGRAMMING AND TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

ELECTRICAL OPERATION ................................................................................ 46

COMPONENT FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

COMPONENT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

VC4E & VC6E Series Full Size Electric Convection Ovens

F25105 Rev. D (0619) Page 2 of 79

SEQUENCE OF OPERATION - VC4ES, VC6ES WITH MECHANICAL KX THERMOSTAT . . . . . . . . . . . . . . 52

SEQUENCE OF OPERATION - VC4ED, VC6ED WITH SOLID STATE TEMPERATURE CONTROL . . . . . 52

SEQUENCE OF OPERATION - VC4EC, VC6EC (COMPUTER CONTROL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

SCHEMATICS AND WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

TROUBLESHOOTING ..................................................................................... 76

ALL MODELS ......................................................................................... 76

COMPUTER CONTROL MODELS ONLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

VC4E & VC6E Series Full Size Electric Convection Ovens

Page 3 of 79 F25105 Rev. D (0619)