TurboChef 2020 HIGH h Service Manual

Accelerating the World of Cooking

TM

Service Manual

FOR THE TURBOCHEF 2020 HIGH h CONVEY OR OVEN

© 2008 TurboChef Technologies, Inc.

For further information, call

800.90TURBO
or

+1 214.379.6000

The information contained in this manual is important for the proper installation, use, maintenance,

epair of this o

and r
results and years of trouble-free service.

rrors – descriptive, typographic, or pictorial – are subject to correction. Specifications are subject to

E
change without notice.

lease carefully read this manual and retain it for future reference.

P

ven. Follow these procedures and instructions to help ensure satisfactory baking

Table of Contents

Safety Information

mportant Safety Information – Please Read First i

I

eneral Safety Information i

G

educing Fire Risk i

R
Preventing Oven Damage ii
Grounding Instructions ii
Power Cord Replacement ii

Specifications and installation

imensions

D

lectrical S

E

ackaging

P
Cer
Oven Construction 2

nstallation I

I
Delivery and Initial Inspection 2
Lifting the Ov
Oven Location and Placement 2

tacking Ov

S
Installation Near Open Heat Source 4

entilation Requirements 4

V

pecifications 1

tifications

nstructions 2

en

ens 3

1

2
2

2

Cleaning - Daily and Weekly

D
Weekly Cleaning Instructions 6-8

tandar

S

Oven Controls 9
Cooking a P
Editing a Cooking Profile 12

ven Modes

O

Config M

S

Updating the Firmware 16
T

aily Cleaning I

d Oven Operation

Changing a Cooking P
Adjusting the Belt Speed 13
A
Adjusting the Top and Bottom Air 13

S
Accessing the Fault Count Screen 15
Accessing the Setup Mode 15

etup Mode 15

Changing the D
E
Changing the D
Info Screen 16

est Mode 17

A
Accessing the Belt Control Screen 18
M
Viewing the Status Indicators 18
Entering a New Serial Number 19

nstructions 5

oduct

r

djusting the Temperature 13

ode 15

mart Card Screen (Loading a Menu) 15

dit Modes Select Screen 16

ccessing the Heat Control Screen 17

anipulating the Top and Bottom Blowers 18

10

ame

ofile N

r

isplay Temperature 16

isplay Language 16

12

Oven Systems

The Control System 21

The Conv

The Convection System 24

Initiating a Burn-In Test 20

rasing Oven Settings 20

E
Viewing the Serial Number 20

Control Board 21

isplay

D

ilter

EMI F

uses

F

igh-Limit

H

eypad

K

ower Supply - 24VDC 21

P

elays, K6 (Heaters) and K7 (Conveyor Direction) 21

R

elay, Solid State - K5/K4 Heaters 22

R

TD

R

mar

S
Speaker 22
Thermostats - 120ºF (Close on Rise)
Wire Harness 22

eyor System 23

Gear Drive (Conveyor Motor) 23

ear Drive (Conveyor Motor) Speed Controller (CMSC) 23

G

wer Motor 24

lo

B
Blower Motor Speed Controller (BMSC) 24

eaters 24

H

Thermostat 21

t Card Reader 22

21
21
21

21

22

22

Troubleshooting

Troubleshooting 25

w of

vie

er

Ov
Fault Code Descriptions 25

roubleshooting - F1:BLOWER FAULT 27-28

ault Code

F
Fault Code Troubleshooting - F2: LOW COOK TEMP 29

ault Code

F
Fault Code Troubleshooting - F6: EC OVER TEMP 31

ault Code

F
Fault Code Troubleshooting - F8: HIGH LIMIT TRIPPED 32

ault Code Troubleshooting - F9: BELT FAULT (Total Belt Run Failure) 33

F
Non-Fault Code Troubleshooting - Cooling System Issue 34

on-Fault Code Troubleshooting - Food Not Cooking Properly 35

N

on-Fault Code Troubleshooting - No Display - Screen is Blank 36

N
Non-Fault Code Troubleshooting - No Keypad Input 36

T

roubleshooting - F5: CC OVER TEMP 30

T

roubleshooting - F7: RTD FAULT 32

T

Schematics

Oven Schematic (Delta 4-Pin Plug Configuration) 37

en Schematic (Wye 5-Pin Plug Configuration) 38

Ov

in-out 39

P
CMSC P

arameters 40

Appendix A - Replacing Oven Components

Compr
R
R
R

ehensive Part List A-1
eplacing Items - Outside of End Bells A-4
eplacing Items - Left End Bell A-6
eplacing Items - Right End Bell A-8

SAFET Y INFORMATION

Important Safety Information – Please Read First

I

mproper installation, adjustment, alteration, service, or maintenance of this equipment can cause property

damage, injur

y, or death. Thoroughly read the installation, operating, and maintenance instructions before

installing or ser

vicing this equipment. S

trictly adhere to the following safety information to reduce the

risk of:

o

Damage to the oven

o

Damage to property near the oven

o

P

ersonal injury

o

B

urns

o

F

ire

o

E

lectric shock

General Safety Information

o

Use this appliance only for its intended uses as described in this manual.

o

Only qualified service personnel should service this appliance. Contact the nearest authorized service
facility for examination, repair, or adjustment.

o

Always ensure the oven is disconnected from the power supply before servicing, repairing, or adjusting
any components or parts.

o

x

DO NOT place the cord near heated surfaces.

o

x

DO NOT store or use flammable vapors or liquids (e.g., gasoline) in the vicinity of this appliance.

o

x

DO NO

T allow children to use this appliance.

o

x

DO NO

T place corrosive chemicals or vapors in this appliance. It is not designed for industrial or

laborator

y use.

o

x

DO NO

T

operate this appliance if it:

H

as a damaged cor

d or plug

I

s not wor

king pr

operly

H

as been damaged or dr

opped

o

x

DO NOT cover or block any openings on this appliance.

o

x

DO NOT store this appliance outdoors.

o

x

DO NOT use this appliance near water.

o

x

DO NOT immerse this appliance or any of its components (e.g., cord, plug, etc.) in water.

o

x

DO NO

T let the cord hang over the edge of a table or counter.

Reducing Fire Risk

I

f materials inside the oven ignite or if smoke is observed,

1. Turn off the oven.

2.

Disconnect the power cord or shut off power at the fuse/circuit breaker panel.

o

Carefully attend the oven if paper, plastic, or other combustible materials are placed inside the oven
to facilitate cooking.

o

x

DO NOT leave items in the cook cavity when the oven is not in use.

o

x

DO NOT cook items wrapped in cling wrap or plastic film.

o

x

DO NO

T overcook food.

i

ii SAFET Y INFORMATION

Preventing Oven Damage

o

When ser
the insulation and r

o

Clean the o

o

Clean the oven only with TurboChef Oven Cleaner.

x

o

DO NOT clean with a water jet.

x

o

DO NOT allow cleaning solution or water to remain in the cook cavity longer than necessary.

vicing this appliance, do not tear insulation to get to components. Rather, find the edge of

emove the tape that holds it in place.

en daily.

v

Grounding Instructions

ARNING:

W

This appliance must be gr

ent of an electrical shor

ev

Improper grounding increases the risk of electric shock.

ounded.

cuit, r

t cir

The cor

d is equipped with a grounding wire and plug, which in the

educe the risk of electric shock by providing an escape wire for the

electric current. The wire must be plugged into an outlet that is properly installed and grounded.

Consult a qualified electrician or serviceman to determine whether or not the appliance is properly
grounded.

x

o

DO NOT use an extension cord. If the power supply cord is too short, request a qualified electrician
or serviceman to install an outlet near the appliance.

Power Cord Replacement

oid potential hazards, only the manufacturer, its service agent, or a similarly-qualified person should

o av

T

eplace a damaged po

r

wer cord.

Specifications and Installation

SPECIFICATIONS AND INSTALLATION

1

Dimensions

Exterior

Height 13.0” (330 mm)

--with legs 17.0” (432 mm)

Width 48.3” (1227 mm)

--with extensions 60.1” (1527 mm)

D

epth 35.7” (907 mm)

Conveyor

Length 48.3” (1227 mm)

Width (Single) 20.0” (508 mm)
Width (50/50) 9.5” / 9.5” (241 mm / 241 mm)
Width (70/30) 15” / 4” (381 mm / 102 mm)

Electrical Specifications

North America

3 Phase
208/240 VAC
50/60 Hz
40 amp curr

ent draw

4-wir

e supply

NEMA 15-50P plug (4-pin IEC60309 av

ailable b

y

special or

der)

50-amp max cir

cuit br

eaker pr

otection

E

urope/Asia (220-240 VAC)

3 Phase
220-240

VAC
50/60 Hz
40 amp current draw
4-wir

e supply
IEC60309 4-pin plug
64-amp max cir

cuit breaker protection

E

urope/Asia (380-415 VAC)

3 Phase
380-415 VAC
50/60 Hz
20 amp current draw
5-wir

e supply
IEC60309 5-pin plug
32-amp max circuit breaker protection

35.7” (907 mm)

8.5”

(216 mm)

48.3” (1227 mm)

13.0”

(330 mm)

17.0”

(432 mm)

4.0” (102 mm)

60.1” (1527 mm) with extensions

43.0”

(1092 mm)

13.0”

(330 mm)

13.0”

(330 mm)

13.0”

(330 mm)

30.0”

(762 mm)

13.0”

(330 mm)

13.0”

(330 mm)

F

igur

e 1: Oven Dimensions - Side

Figure 2: Oven Dimensions - Top

F

igure 3: Oven Dimensions - Front (Single)

Figure 4: Oven Dimensions - Front (Double)

F

igure 5: Oven Dimensions - Front (Triple)

2 SPECIFICATIONS AND INSTALLATION

Packaging

All o

vens are packaged in a double-wall corrugated

bo

x with integrated wooden skids. All international

o

v

ens shipped via Air or Less than Container Loads

are packaged in wooden crates.

C

er

tifications

O

v

en C

onstruc

tion

-

430 stainless steel fr

ont, top

, sides, and back

-

Cool to touch co

v

ers and panels

- Stainless steel interior

- 20-inch-wide cook chamber

Installation Instructions

The

T

urboChef HhC 2020 Conv

ey

or Oven is
designed and certified for safe operation when
installed in accordance with local and/or national
codes. It is the owner and/or installer's responsibility
to comply with any codes that may exist. Install this
oven according to the policies and procedures
outlined below and throughout this manual.

W

ARNING: Death, injury, and equipment
damage can result from improper installation, or
installation of a unit damaged during shipment
or storage.

WARNING: Do not install an oven suspected
of damage. I

mproper installation or the
installation of a unit damaged during shipment
or storage may void the Limited Warranty.

D

elivery and Initial Inspection

All

TurboChef ovens are shipped so as to prevent

damage.

Upon delivery, inspect the shipping container for
external damage. Any evidence of damage should be
noted on the delivery receipt, which must be signed
b

y the driver.

Upon removing the oven from its shipping carton,
check for any possible damage. Make note of any
damage and contact the shipping company to file a
claim. Carriers will accept claims for concealed
damage if notified within fifteen days of the deliv

er

y
and if the shipping container is retained for
inspection.

T

urboChef does not assume responsibility for any
loss or damage suffered in transit. The carrier
assumes full responsibility for delivery in good order
when the shipment is accepted. However, when
necessar

y

,

TurboChef can assist in filing a claim.

Lifting the Oven

W

ARNING: The oven weighs approximately

195 lbs (88.5 kg).

T

wo or more people are

r

equir

ed to lift it.

Position one or more persons on either side of the
oven. Lift from the bottom. The countertop must be
at least 30” (762 mm) deep and capable of
supporting 200 lbs (90.7 kg) per oven.

Once properly positioned on the counter, plug the
o

ven into a wall mounted electrical receptacle. See
E

lectrical S

pecifications on page 1.

O

ven Location and Placement

WARNING: Death, injury and equipment
damage may r

esult from improper positioning.

WARNING: DO NOT stack ovens more than
thr

ee high.

I

t is the operator's responsibility to ensure the oven
is properly positioned on countertop. TurboChef will
not warrant any damage or injur

y to ovens that fall

off countertops due to improper placement.

P

r

oper placement of the oven will enhance
long-term operator convenience and satisfactory
per

formance. B

e sure to place the oven in an area

accessible for pr

oper operation and servicing.

PENDING

PENDING

SPECIFICATIONS AND INSTALLATION

3

The sur

face on which the oven is placed must be at

least 30” (762 mm) deep and capable of suppor

ting

200 lbs. (90.7 kg) per o

ven. The manufacturer shall
not assume liability for damage or injury resulting
from the improper installation of this equipment,
including temporary or unstable work stations or
countertops.

The o

v

en must be installed level front to back and

side to side. F

or additional stability

, the oven legs

may be bolted to the countertop if desired.

W

ARNING: DO NO

T use this appliance with

out the legs installed.

When stacking, the legs

must be installed on the bottom oven only.

Stacking Ovens

WARNING: Make sure all HhC 2020 ovens
ar

e unplugged before stacking.

W

ARNING: DO NO

T stack ovens more than

3 high.

W

ARNING: DO NOT attempt to lift the

o

ven with fewer than 2 people.

1. Remove the legs from the oven(s) that are going
to be stacked on top.

2. Stack the top oven on the bottom oven. If
stacking three ovens, stack only the middle oven
at this point.

3.

R

emove the 4 screws marked A in Figure 6,

belo

w

.

4. Align each bracket with the holes in the bottom
oven and reinstall the screws marked A in
Figure 6, below.

5.

Remove the 2 screws marked B in Figure 6,
belo

w

.

6.

Align each bracket with the holes in the top
o

v

en and reinstall the screws marked B in

F

igur

e 6, belo

w.

7.

I

f stacking thr

ee o

vens, repeat steps 2-6 above to

stack the top o

v

en to the middle o

v

en.

8. Ensure each stacked oven is secured to the oven
beneath it via two stacking brackets – one on
each side.

A

A

B

A

A

B

F

igure 6: Stacked Ovens

A

A

A

A

B

B

Br

acket

Br

acket

4 SPECIFICATIONS AND INSTALLATION

Grill

Partition

Above Counter Top:
Single Oven = 17.0” (432 mm)
Double Stack = 30.0” (762 mm)
Triple Stack = 43.0” (1092 mm)

6”
(152 mm)
Minimum

12”
(305 mm)
Minimum

Deep Fryer

Counter Top / Table

Partition

Above Counter Top:
Single Oven = 17.0” (432 mm)
Double Stack = 30.0” (762 mm)
Triple Stack = 43.0” (1092 mm)

F

igure 7: Installation Near Open Heat Source

Installation Near Open Heat Source

ee Figure 7. When placing a TurboChef oven near

S
an open heat source, strictly adhere to the following:

f the oven is being placed near a grill or stove,

I

­a divider must exist betw
open heat sour

ce, with a minimum of 6” (152

een the o

mm) between the oven and the divider.

If the oven is being placed near a fryer, a divider

­must exist betw

een the oven and fryer, with a
minimum of 12” (305 mm) between the oven
and the divider

.

- The height of the divider must be greater than
or equal to the height of the oven(s) - page 1.

- Verify oven location has a minimum 10” (254
mm) clearance on top and minimum 2” (51
mm) of clearance on each side.

ven and the

Ventilation Requirements

The HhC2020 should be operated underneath a
ventilation hood, except where local laws or codes
allow for use without a ventilation hood. For more
information or to or

TURBO, [phone], or your local

800.90
distributor

.

NOTE: In no event shall the manufacturer assume
any liability for damages or injuries resulting from
installations that are not in compliance with local
and national codes, and with the instr

eviously listed.

pr

der a ventilation hood, contact

uctions

Cleaning - Daily and Weekly

CLEANING

5

= Wash, rinse, sanitize. (Use only TurboChef-

approved cleaner, part number 103180).

= Completely dry with clean towel.

IDLE

BACK

OFF

E

M

E

R

G

E

N

C

Y

S

T

O

P

High h Conveyor

by TurboChef

TM

IDLE

BACK

OFF

E

M

E

R

G

E

N

C

Y

S

T

O

P

High h Conveyor

by TurboChef

TM

IDLE

BACK

OFF

E

M

E

R

G

E

N
C
Y

S

T

O

P

High h Conveyor

by TurboChef

TM

COOKING

BELT
10:00

BREAKFAST

TOP AIR 80%

BTM AIR 80%

SET

475F

COOLING DOWN

LUNCH

BREAKFAST PIZZA

WINGS

OVEN OFF

LUNCH

BREAKFAST PIZZA

WINGS

1

Daily Cleaning Instructions

2

3

4

5

6

7

8

WARNING: Always disconnect power before cleaning or servicing the oven.

WARNING: DO NOT attempt to clean the oven until it has cooled (screen reads “Oven Off”).

W

ARNING: DO NOT use a water jet when cleaning the oven.

6 CLEANING

WARNING: Always disconnect power before cleaning or servicing the oven.

IDLE

BACK

OFF

E

M

E

R

G

E

N
C

Y

S

T

O

P

High h Conveyor

by TurboChef

TM

IDLE

BACK

OFF

E

M

E

R

G

E

N

C
Y

S

T

O

P

High h Conveyor

by TurboChef

TM

IDLE

BACK

OFF

E

M

E

R

G

E

N

C

Y

S

T

O

P

High h Conveyor

by TurboChef

TM

COOKING

BELT
10:00

BREAKFAST

TOP AIR 80%

BTM AIR 80%

SET

475F

COOLING DOWN

LUNCH

BREAKFAST PIZZA

WINGS

OVEN OFF

LUNCH

BREAKFAST PIZZA

WINGS

1.

2.

Step 1: Turn the Oven Off

2.

1.

3.

5.

4.

Step 2: Remove Outer Oven

Components

WARNING: DO NOT attempt to clean the oven until it has cooled (screen reads “Oven Off”).

WARNING: DO NOT use a water jet when cleaning the oven.

Weekly Cleaning Instructions

=

W

ash, rinse, sanitize. (Use only
TurboChef-approved cleaner, part
number 103180).

= Completely dry with clean towel.

*

Note: The front hatch of a stacked oven will contact the oven beneath it, preventing it from opening
all the way

. To access interior components of a stacked oven, the hatch must be entirely removed.

*

CLEANING

7

1.

2.

3.

4.

5.

Step 3: Remove Inner Oven

Components

1

2

2

1

1

2

11

2.

4.

Step 4: Clean Oven Components

1.

3.

5.

6.

Replace filters if damaged or torn.

8

1.

2.

3.

4.

Step 5: Replace Oven Components

1

22

1

2

6.

7.

8.

9.

5.

Latch

Step 7: Ready the Oven for Use

1.

2.

Step 6: Verify Chain Tension

Acceptable - Chain (A) is tight and
easily clears crumb tray holder (B)

A

B

Call service to have link removed - Chain (A) is
loose and risks contact with crumb tray holder (B)

A

B

See detail below.

Step 5: Reinstall Oven Components

CLEANING

Standard Oven Operation

STANDARD OVEN OPERATION

9

O

v

en C

ontrols

F

igur

e 8.

1. Displa

y

The display sho

ws curr

ent oven operation and/or

user pr

ogramming information.

2. S

oft Keys

S

ix soft keys are on the oven controls, three on the

left (L1, L2, L3, wher

e L1 = top) and three on the

right (R1, R2, R3, wher

e R1 = top). P

ress a soft key

to select the option/command that is adjacent to it.

S

oft keys are labeled in this manual for
identification; however, they are not labeled on the
actual oven keypad.

3. Up and D

o

wn Keys

When the oven is in the OVEN OFF MODE, use the
up key to access the

CONFIG MODE (page 15). Use

the down key to access cooking profiles 5-8.

Also, pr

ess the up and down keys to adjust various

oven settings (see pages 13-20).

O

v

en C

ontrols

F

igure 19

4. Back/Off Key

Depending on the mode the oven is in, the back/off
key will return the oven to the previous screen or
turn the o

ven off (page 10).

5. Idle Key

The idle key activates the IDLE MODE (page 11).

6. Emer

genc

y S

top Key

The emergency stop key shuts do

wn the conveyor

and heaters and returns the oven to the OVEN OFF

MODE (page 10).

NO

TE: Depending on the temperature within the
oven, the cooling fans will remain on to prevent
damage to critical oven components.

CAUTION: DO NOT use the emergency stop
key as a general on/off switch. D

oing so can

damage the o

ven and shorten its life span.

IDLE

BACK

OFF

E

M

E

R

G

E

N

C

Y

S

T

O

P

High h Conveyor

by TurboC hef

TM

2

2

3

4

5

6

1

Figure 8: Oven Controls

C

ook

ing a Product

This section explains ho

w to cook a food product by
describing the “standard operation” modes through
which the o

ven progresses (Figure 9).

-MODE 1: Oven Off

-

MODE 2: Belt Speed Select

-MODE 3: Warming

-

MODE 4: Soaking

-MODE 5: Cooking

-MODE 6: Cooling Down

-MODE 7: Idle

NOTE: MODE 7 is not part of a “standard” cooking
cy

cle. I

t only occurs when the user intervenes as

described on page 11.

Mode 1: Oven Off

M

ode during which all cooking components are off
and the oven temperature has receded below 150°F
(66°C), but the display and keypad remain on. The
user can access cooking pr

ofiles 1-4 on this scr

een (1)

or pr

ess the down key to access cooking profiles 5-8.

Happens When...

-P

ower is supplied to the oven.

-The oven completes MODE 6.

-The user pr

esses the do

wn key while accessing
the CONFIG MODE (refer to page 15 for more
information).

G

oes

To...

-MODE 2 when the user selects a cooking profile
(soft keys L1, L3, R1, or R3).

-CONFIG MODE when the user presses the up key.

Mode 2: Belt Speed Select

Mode during which the user selects the desired belt
speed.

NOTE: If a different key is pressed, the oven will ask
if you wish to continue or return to the belt speed
select screen. If you select continue, the oven will not
save the belt speed.

Happens When...

-The user selects a cooking pr

ofile from MODE

1 or 6.

G

oes To...

-MODE 3.

BREAKFAST

LUNCH

DINNER

OVEN OFF

DESSERT

BREAKFAST
5:00

3:00
LUNCH

DINNER

2:00

3:20

4:00

BELT SPEED

2:45

2:00 2:30

DESSERT

BREAKFAST

BELT F
5:00

BELT R
3:20

TOP AIR 80 %

SET

COOKING

475F

BTM AIR 100 %

BREAKFAST

BELT F
5:00

BELT R
3:20

TOP AIR 80 %

SET

SOAKING

TIME LEFT = 5:00

475F

BTM AIR 100 %

1

2

5

4

BREAKFAST

BELT F
5:00

BELT R
3:20

TOP AIR 30%

SET

OVEN IDLE

PRESS ANY KEY

475F

BTM AIR 30%

BREAKFAST

LUNCH

DINNER

COOLING DOWN

OVEN TCC = 425F

DESSERT

7

BREAKFAST

BELT F
5:00

BELT R
3:20

TOP AIR 60 %

SET

WARMUP

OVEN TCC = 275F

475F

BTM AIR 60 %

3

6

F

igur

e 9: C

ooking Modes

10 STANDARD OVEN OPERATION

STANDARD OVEN OPERATION

11

M

ode 3: Warming

M

ode during which the oven warms to the preset
cooking temperature defined by the cooking profile
that was selected.

Happens When...

- A selection is made from MODE 2, and the oven’s

temperature at the beginning of warmup was not
within (less than) 25°F (14°C) of the oven’s set
temperature.

Goes To...

- MODE 4 once the oven has reached the temperature

defined b

y the selected cooking pr

ofile.

- MODE 6 when the user presses the back/off key

and the o

v

en temperatur

e is above 150°F (66°C), or

MODE 1 if the oven temperature is below 150°F

(66°C).

Mode 4: Soaking

M

ode during which the o

v

en has completed
warming up and automatically allows an additional
fiv

e minutes for the o

v

en cavity sur

faces to warm.

H

appens

When...

- MODE 3 completes (within 5°F [3°C] of set point)

Goes To...

-

MODE

5 when soaking completes.

- MODE 6 when the user presses the back/off key.

M

ode 5: Cooking

Mode during which the oven is ready to cook. The
user can place food on the conv

eyor to cook, or edit
cook settings if the full edit or flex option is enabled.
See page 12 for more information on full edit and
flex options.

Happens When...

-

MODE 4 completes.

-

The user presses the idle key, up key, down
key, or any soft key during MODE 7.

G

oes To...

-

MODE 6 when the user presses the back/off key.

- MODE 7 when the user presses the idle key.

-

MODE 3 if the temperature drops 25°F (14°C)

or more below the set point.

M

ode 6: Cooling Down

M

ode during which the heater shuts off to allow the

oven to cool.

Happens When...

- The user presses the back/off key from MODE 3
(and the oven temperature is above 150°F [66°C]),
or from MODES 4, 5, or 7.

Goes To...

- MODE 1 when the oven temperature has receded
below 150°F (66°C).

- MODE 2 when the user selects a cooking profile.

M

ode 7: Idle

Mode during which both blowers are reduced to
30% and the belt speed r

educes to 20 minutes to
save power. All other oven components remain the
same.

H

appens

When...

-The user presses the idle key from MODE 5.

Goes To...

-

MODE

5 when the user pr

esses the idle key

, up

key, down key, or any soft key.

-

MODE

6 when the user pr

esses the back/off key.

12 STANDARD OVEN OPERATION

PROFILE 1

BELT F
5:00

BELT R
3:20

TOP AIR 80 %

SET

COOKING

475F

BTM AIR 100 %

INS

CANCEL

DEL

<--- --->

SAVE

[PROFILE 1 ]

F

igure 10: Cooking Screen

Figure 11: Name Change Screen

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

Editing a Cooking Profile

To edit a cooking profile, the oven must be in the

COOKING MODE, and the full edit or flex option

must be enabled for each option y

or more information on selecting between full edit,

F
rigid, and flex options for each editable setting, see
Edit Modes Select Screen on page 16.

When the rigid option is enabled for a given setting,
the soft key adjacent to that setting (Figure 10) is
disabled and no menu editing is allo

ou want to edit.

wed.

ing a Cooking Profile Name

Chang

1. From the cooking screen (Figure 10), press
L1 to access the name change scr

igure 11).

(F

Change the name of the cooking pr

2.

The up key moves forward through the

-

ailable characters. e.g. A,B,C…

av

een

ofile.

- The down key moves backward through the

available characters e.g. A,+,-, ,9,8…

When the full edit option is enabled for a given
setting, that setting is fully customizable and
changes are saved once the oven returns to the OVEN

OFF or COOLING DOWN MODE.

When the flex option is enabled for a giv

en setting,
that setting is customizable within flex option
limitations (as described in the follo
and changes will r

or COOLING DOWN MODE. NOTE: The

OFF

VEN

O

eset when the o

flex option does not apply to editing a pr

wing sections),

ven returns to the

ofile name.

This section assumes that the full edit option is
enabled (except where otherwise noted) and that a
cooking profile and belt speed have been selected.

- INS (L1) inserts a space.

- DEL (R1) deletes the selected character.

es the cursor to the right.

- ---> (R2) mo

- <--- (L2) mo

v

es the cursor to the left.

v

3. Press save (R3) to save the changes or cancel
(L3) to cancel any changes.

STANDARD OVEN OPERATION

13

BEL

T R

10:00

T

OP AIR 80 %

<--- --->

PROFILE 1

A

djusting the Belt Speed

The H

igh h Conveyor Oven can accommodate
either one or two conveyor belts. The oven will
automatically detect the number of conveyor belts
installed and display the option to change the speed
of each conv

ey

or belt independently.

1. From Figure 10, press the soft key adjacent

to the conveyor belt you wish to adjust
(pr

ess L2 for the front belt [Belt F] or L3

for the r

ear belt [Belt R]).

2.

A

djust the time it takes for the conveyor

belt to completely cy

cle thr

ough the oven.

-

The up key incr

eases bake time in

5-second incr

ements up to 20 minutes.

+ Flex option enabled: the user can only

increase the time up to an additional
15 seconds.

- The down key decreases bake time in
5-second increments.
+ Flex option enabled: the user cannot

decrease the time by more than 15
seconds.

3.

P

r

ess the soft key adjacent to the belt that

was adjusted to exit the belt speed contr

ols.

Adjusting the Temperature

1. Press R2 (Figure 10) to access the temperature
contr

ols.

2. Adjust the temperature (range is 300-550°F
[149-288°C]).

- P

ress the up key to increase the
temperature in 5°F/5°C increments.
+ Flex option enabled: the user can only

incr

ease the temperature up to an

additional 10°F/5°C.

- Press the down key to decrease the
temperatur

e in 5°F/°5C increments.

+ Flex option enabled: the user cannot

decr

ease the temperature by more than

10°F/5°C.

3. Press R2 again to exit temperature controls.

A

djusting the Top and Bottom Air

1.

Press R1 (Figure 10) to access the top air
controls, or R3 to access the bottom air controls.

2.

Adjust the air speed.

- P

ress the up key to increase the air speed in 5%

incr

ements up to 100%.

+Flex option enabled: the user can only

increase the air speed by up to an
additional 15%.

- P

ress the down key to decrease the air

speed in 5% incr

ements do

wn to 30%.

+F

lex option enabled: the user cannot

decr

ease the air speed b

y more than

15%.

- P

r

ess the soft key again to exit the air

controls.

14 STANDARD OVEN OPERATION

This page intentionally

t blank

lef

.

Oven Modes

OVEN MODES

Config Mode

The

CONFIG

MODE (Figure 12) serves four main

purposes:

1. To access the smart card screen.

2. To access the fault count screen.

3.

To access the SETUP MODE.

4.

T

o access the TEST MODE (service use only).

To access the CONFIG MODE, press the up key from
the OVEN OFF MODE.

Smar

t C

ar

d Screen (Loading a Menu)

The smar

t car

d screen allows the user to

-Load a menu fr

om smar

t car

d to oven.

-S

av

e a menu fr

om o

ven to smart card.

To load or save a menu,

1. Press L3 (Figure 12) to access the smart card
screen (Figure 13).

2. Insert a smart card into the smart card slot
(Figures 14 and 15), with the gold chip
facing the front of the oven.

3. Load or save a menu.

- Press R1 to load a menu from the smart

card to the oven (Figure 13).

- Press R2 to save a menu from the oven to

the smart card (Figure 13).

Accessing the Fault Count Screen

F

rom the CONFIG MODE (Figure 12), press R1 to
access the fault counts screen (Figure 16, page 16).
The oven will display the number of faults that have
occurred.

Accessing the Setup Mode

From the CONFIG MODE (Figure 12), press L1 to
access the SETUP MODE. The SETUP MODE allows the
user to customize several oven settings - see below
for mor

e details.

Setup Mode

Figure 17, page 16.

The SETUP MODE serves four main purposes:

1. To change the display temperature.

2. To access the edit option screen.

3. To change the display language.

4. To access the info screen.

T

o access SETUP MODE, press the up key from the

O

VEN OFF or COOLING DOWN MODE (to access the

CONFIG

MODE

), and then pr

ess L1.

INSERT SMART CARD

PRESS [BACK] TO EXIT

SMARTCARD

FAULTS

CONFIG MENU

SETUP

TEST MODE

Figure 12: Config Mode

LOAD FROM CARD

SMARTCARD

SAVE TO CARD

Figure 13: Smart Card Screen

Figure 15: Insert Smart Card Screen

15

Figure 14: Loading a Smart Card

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

16

DEGS F

EDIT/RIGID/FLEX

ENGLISH

SETUP MENU

INFO

Figure 17: Setup Mode

Changing the Display Temperature

The o

ven can display the temperature in either

Celsius or F

ahrenheit units. To change the display

temperature, press L1 in SETUP MODE (Figure 17).

E

dit M

odes Select Screen

The edit modes select screen (Figure 19) allows the
user to switch between full edit, rigid, and flex for
profile name, belt speed, temperature, and % air.
For more information on the different edit options,
see E

diting a Cooking Profile

on page 11.

T

o access the edit modes select scr

een,

1.

P

r

ess L3 (Figure 17) to access the password

scr

een (F

igur

e 18).

2.

I

nput the password

6 6 3 3 by pressing the

soft keys adjacent to the numbers.

T

o change the edit option (F

igure 19),

-

P

ress L1 to select full edit or rigid for the profile

name.

-

P

r

ess L3 to select full edit, rigid, or flex for the

belt speed.

-

P

r

ess R1 to select full edit, rigid, or flex for the

profile cook temperature setting.

- Press R3 to select full edit, rigid, or flex for the
% air setting.

Changing the Display Language

NO

TE: Feature is not available on all oven models.

From the setup menu screen (Figure 17), press R1
to set the language to E

nglish, French, German, or

S

panish.

Info Screen

The info scr

een (Figure 20) is used to display the

follo

wing information in an easy to access place:

- Serial number

- Electrical compartment temperature

- Voltage

-

Total time the oven has been on

-

Total time the oven has been idle

- F

irmware version

T

o access the info screen, press R3 within the SETUP

MODE

(Figure 17).

Upda

ting the F

irmware

F

rom the oven off screen,

1.

I

nser

t the gray smart card (see Figure 14, page

15) with the gold chip facing the fr

ont of the
oven. If multiple smart cards are required, they
will be labeled in sequence - ensure the correct
sequence is followed.

2.

F

r

om the

COOLING DOWN or OVEN OFF MODE,

press and hold the idle key until the oven resets
(approximately 5 seconds). The display will go
blank until the upload is complete.

3. When the oven beeps one long high tone, the
load was successful. If a second card was
provided, insert it.

4.

When the oven restarts and the display turns
on, the update is complete. R

emove the smart

card from the oven.

F1: 0
F2: 0
F3: 0
F4: 0
F5: 0

F6: 0
F7: 0
F8: 0
F9: 0

F10: 0

FAULT COUNTS

Figure 16: Fault Counts Screen

1

2

3

4

5

<6633>

6

ENTER PASSWORD

Figure 18: Password Screen

NAME: FULL

BELT: RIGID

EDIT MODES

SELECT

TEMP: FLEX

AIR: FLEX

Figure 19: Edit Option Screen

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

OVEN MODES

NOTE: If the update is unsuccessful, the display
will r

emain off and the oven will beep one long,
low tone. If this occurs, repeat the above
procedure. If the update fails multiple times, a
smar

t card may be damaged.

Please note that the

o

v

en will be inoperable until a successful update is

per

formed.

As such, TurboChef reinforces proper

handling of smar

t car

ds to help prevent static
damage, and recommends that each service
technician keep a backup copy.

T

est M

ode

The TEST MODE serves the following purposes:

-

To test individual oven components.

-

To view oven information.

-

T

o reset oven parameters.

-

T

o input a new serial number.

To access the TEST MODE,

1. Press the up key from the OVEN OFF or

COOLING DOWN MODE to access the
CONFIG MODE.

2. Press the R3 soft key (Figure 12, page 15).

3. Input the password

2 4 3 3 (Figure 23).

The

TEST

MODE consists of two screens (Figures 21

and 22). U

se the up and do

wn keys to navigate

betw

een them.

F

rom screen 1 of the TEST MODE, the user can:

-Access the heat control screen.

-A

ccess the belt control screen.

-M

anipulate the top and bottom blowers.

-View the status indicators.

From screen 2 of the TEST MODE, the user can:

-

Input a new serial number

- Initiate a burn-in test

- Erase oven settings and fault counts

-

Change the maximum temperature from
550

º

F to 600ºF

, or vice v

ersa.

NOTE: DO NOT change this setting unless
instr

ucted by TurboChef.

-

E

nable/disable maintenance mode*

*

The maintenance mode will show
temperature, heater operation, and other
diagnostics while the oven is running.

Accessing the Heat Control Screen

From screen 1 of the TEST MODE (Figure 21), press
L1 to access the heat control screen (Figure 24).

NOTE: This mode is intended for setting gas
pressures on other TurboChef conveyor ovens. Even
though the HhC 2020 is electric, this mode can be
used to energiz

e the heaters to v

erify proper

operation and r

eadings.

-

P

ress L1 to turn the heaters on.

-

P

r

ess R1 to turn the heaters off.

HEAT CTRL

BELT CTRL

TOP AIR

TEST PAGE 1

BOT AIR

D EC27 45% 100% 23.9V 0.0V450F

R 1 2 _ H _ _ _ _ – – – – – _ _ _ O _ _ T B T B – F – – – –

1

2

3

4

5

<2433>

6

ENTER PASSWORD

INPUT SN

BURN-IN

ERASE/CLEAR

MAX TEMP 550

TEST PAGE 2

MAINT ON

17

OVEN MODES

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

Figure 22: Test Mode Screen 2

Figure 21: Test Mode Screen 1

F

igure 23: Password Screen

EC=82F 208V

RUN: 65432 HR
IDLE: 12345 HR

INFO

SERIAL_NUMBER

FIRMWARE VERSION

Figure 20: Info Screen

L1

L2

L3

R1

R2

R3

BURN FULL (LIGHT)

BURN LOW

BURN OFF

HEAT CTRL

TCC = 475F

D EC27 45% 100% 23.9V 0.0V450F
R 1 2 _ H _ _ _ _ – – – – – _ _ _ O _ _ T B T B – F – – – –

Figure 24: Heat Control Screen

L1

L2

L3

R1

R2

R3

18 OVEN MODES

BELTS OFF

10:25 1920 36%

BELT F

BELT CTRL

BELT R
12:30 1343 31%

F

igure 25: Belt Control Screen

L1

L2

L3

R1

R2

R3

D EC27 100% 23.9V450F
R 1 2 _ _ _ _ _ – – – – – C L _ O _ _ T B T B – F – – – –

a b c d e

1 2 3 654 7 8 910 11

F

igure 26: Status Indicator Explanation

INS

CANCEL

DEL

<--- --->

SAVE

[ ]

F

igure 27: Enter New Serial Number Screen

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

Accessing the Belt Control Screen

rom TEST MODE screen 1 (Figure 21, page 17),

F
press L2 to access the belt control screen (Figure

25). Use this mode to verify the belts work
ectly. The number after the belt speed

corr

ws the pulses read by the HES. The

sho

centage is the amount of driv

per
of the CMSC (100% = 10V).

To change the belt’s setting,

-Press L1 to turn the belts off.

ess L2 to access the belt F contr

r

-P

ess L3 to access the belt R contr

r

-P

Manipulating the Top and Bottom
Blowers

Figure 21, page 17.

The user can change the speed of the top and
bottom blowers independently. To change the
speed of the blowers,

e being asked

ols.

ols.

op Display Line

T

The top display line sho

ws values relating to
oven components. The letters a-c and e below,
and on Figure 26, indicate the different top
display line status indicators, which are
explained belo

w.

a Shows which key is currently pressed.

-U = up key
= down key

-D
= L1

-a
= L2

-b

-c = L3

-f = R1

-g = R2

-h = R3
= back/off key

-P
= idle key

-I
= emergency stop key

-S

b Shows the temperature within the electrical

compartment (temperature displayed in
Celsius only).

1. From screen 1 of the TEST MODE, press R1
to access the top blower or R2 to access the
bottom blower.

2. Press the up or down keys to change the
speed of the selected blower in 5%
increments. The percentage of air cannot go

w 30% or above 100%.

belo

Viewing the Status Indicators

Figure 26

The status indicators ar
of TEST MODE screen 1 and the heat control

een. The status indicators are split into two

scr
display lines.

e located at the bottom

hows the temperature within the cook

S

c

chamber

.

d Not applicable to this oven.

Shows the voltage of the power supply.

e

OVEN MODES

19

B

ottom Display Line

The bottom display line sho

ws enabled inputs
and outputs on the control board. The numbers
1-10 indicate the different bottom display line,
which are explained below.

NO

TE: A “-” or “_” display

ed on the bottom
display line denotes values that are in the off
mode or closed.

1

“R” r

epresents the real time clock pulse

used b

y the contr

ol board to time oven
functions. The “R” will blink once per
second.

2 The “1” shows that the rear belt’s conveyor

motor

’s Hall Effect Sensor (HES) is sending

a pulse to the contr

ol boar

d.

3

The “2” sho

ws that the fr

ont belt’s

conv

ey

or motor

’s HES is sending a pulse to

the contr

ol boar

d.

4

The “C” will only appear if the v

oltage is

below 220.

5 The “L” signifies that this is an electric

oven.

6 The “O” will only be missing during an F8:

High Limit Tripped fault.

7

The first “T” is displayed while the top air
BMSC reports an ok status to the control
boar

d.

8 The first “B” is displayed while the bottom

air BMSC reports an ok status to the
contr

ol board.

9 The second “T” is displayed while the top

air BMSC is enabled and r

eceiving a

command.

10

The second “B” is displayed while the
bottom air BMSC is enabled and r

eceiving

a command.

11 If the “F” is displayed, the belts are traveling

right to left. I

f the “F” is not display

ed, the

belts are traveling left to right.

Entering a New Serial Number

F

igure 27

1.

P

ress L1 (Figure 22, page 17) on screen 2 of
the TEST MODE to access the serial number
input screen.

2.

E

nter the new serial number.

-

The up key mo

ves up through the

-available characters. i.e. A,B,C…

-

The do

wn key moves down through the

-available characters i.e. A,+,-, ,9,8,…

- INS (L1) inserts a space.

- DEL (R1) deletes the selected character.

- ---> (R2) moves the cursor to the right.

- <--- (L2) moves the cursor to the left.

3.

P

r

ess R3 to save the changes or L3 to cancel.

20

Continue?

CLEAR FAULTS?

Figure 31: Confirm Clear Fault Counts Screen

BREAKFAST

BELT F
5:00

BELT R
3:20 100%

TOP AIR 80 %

SET

COOKING

OVEN TCC = 475F

475F

BTM AIR 100 %

Burn-In in Progress

Time Left = 42:37

F

igure 28: Burn-In Test Screen

ERASE MENUS/BELTS/CONFIGS

CLEAR FAULTS

CLEAR HOURS

Figure 30: Erase Screen

BURN-IN COMPLETE

OVEN TCC = 475F

PRESS ANY KEY TO CONTINUE

Figure 29: Burn-In Complete Screen

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

L1

L2

L3

R1

R2

R3

OVEN MODES

Initiating a Burn-In Test

NOTE: Burn-in tests are for manufacturing use

NOT initiate a burn-in test unless

. DO

only
expressly instructed by TurboChef.

o initiate a burn-in test, Press L2 (Figure 22,

T
page 17) on scr

een 2 of the TEST MODE.

The burn-in test (Figure 28) runs the oven for 45
minutes to ensure correct oven operation. When
the burn-in test completes, the burn-in complete

igure 29) will appear. Press any key to

een (F

scr

en to the COOLING DOWN MODE. If

DO

v

OVEN OFF MODE.

or

WN

or code

en will return to the COOL-

v

send the o
the burn-in test fails, the applicable err
will appear and the o

ING

Erasing Oven Settings

To erase oven settings, press L3 (Figure 22, page

17) on screen 2 of the TEST MODE to access the
erase screen (Figure 30). From the erase screen,

Viewing the Serial Number

The serial number is located at the bottom of
screen 2 of the TEST MODE (Figure 22, page 17).

UTION:

CA

e r

befor
Replacing the I/O control board will erase
this number from the oven’s memory.

f replacing a control board, see page 19 for re-

I
entering the serial number

Write this number down

eplacing the I/O control board.

.

- Press L1 to erase all menu, belt, and
configuration settings.

ress L2 to clear the fault counters.

P

-

ress L3 to clear the operational hours.

P

-

en will ask y

v

The o

e 31 sho

igur

(F

ess R3 to confirm or the back/off key to cancel.

pr

UTION: Settings, fault counts, and hours

CA

ou to confirm the action

ws the confirm clear faults scr

cannot be retrieved once the erase option is
confirmed.

een);

Oven Systems

21

OVEN SYSTEMS

The Control System

This section contains information about the
following components:

- Control Board

-

Display

-

EMI Filter

-

F

uses

- High-limit Thermostat

- Keypad

- Power Supply, 24VDC

- Relay (K6 - Heaters)

- Relay (K7 - Conveyor Direction)

- Relay, Solid State

- RTD

- Smart Card Reader

- Speaker

- Thermostats - 120ºF (Close on Rise)

- Wire Harness

This section also contains testing pr

ocedur

es for

the follo

wing components:

-

P

o

wer Supply - 24VDC

-

R

elay (K6 - H

eaters)

- Relay (K7 - Conveyor Direction)

- RTD

C

on

tr

ol Board

The contr

ol boar

d is po

wered by the 24 VDC

po

w

er supply

, and sends contr

ol voltage to each
relay. See schematics (pages 37-40). 24 VDC can
be measur

ed at the J9 connector, pins 19 and 8.

Displa

y

The v

acuum fluor

escent display is the primary
user interface, and is powered by the control
boar

d using 5

VDC. Its input voltage can be test-

ed at J7, pins 1 and 3 (page 39).

EMI Filter

The EMI filter helps suppr

ess the amount of RF
“noise” emitted by the oven, also filtering noise
fr

om entering the controls.

F

uses

The contr

ol circuit is ultimately protected by two
20-amp class CC fuses, which are in the line­voltage circuit (incoming voltage). The fuses are
designed to blow in case of an over-current situa­tion.

High-Limit Thermostat

The high limit thermostat is a 3-pole, manual
reset thermostat with a trip point of 572ºF
(300ºC). The thermostat interrupts power to the
heater elements.

Keypad

The keypad is an 11-key membrane switch.

P

ower Supply - 24VDC

The power supply converts line voltage to 24
VDC. Line voltage is connected to terminals L &
N. The output (24 VDC) is on terminals
“-V” and “+V”.

Testing Procedure

1. Check for line voltage at terminals L & N.

2.

If correct voltage is present, check output
(-V & +V

) for 24 VDC (with output wires

disconnected).

3. If voltage is present with output wires

disconnected and not pr

esent when the
wires are connected, inspect the wire
harness for damage or shorts (pages 37-40 for
schematics).

4. If wire harness is intact and undamaged,
the power supply is damaged or defective and
must be r

eplaced (page A-8).

Relays, K6 (Heaters) and K7 (Conveyor Direction)

The K6 and K7 relays are double pole, double
throw relays with a 24 VDC coil. The coil resist­ance is 585 W and the contact rating is 30A at
240 VAC. When 24 VDC is applied to the coil,
the normally open contacts (7 & 4 or C & NO)
close, applying line v

oltage to energize the heaters

(K6) or reverse the conveyor direction (K7).

22 OVEN SYSTEMS

Testing Procedure

1. Disconnect line voltage to the unit.

Take a resistance reading of the coil.

2.

3. If coil resistance is correct (585

W):

a) Apply line voltage to the unit.

b) Check for 24 VDC at the coil of the

relay when the unit is calling for heat.

c) Check the state of the contacts.

-If the normally open contacts (7 & 4

-or C & NO) are closed when coil

oltage is applied, the relay is

v

-

functioning normally

-

f the normally open contacts (7 & 4

-I

or C & NO ar

-

oltage is applied, the r

v

-

eplaced (page A-7 and A-8).

r

.

e not closed when coil

elay must be

4. If the coil resistance is incorrect, replace the
relay.

Relay, Solid State - K5/K4 Heaters

The solid state relay is a 240 VAC, dual 40-amp
relay, and switches power to the heaters.

RTD

The RTD is a resistance temperature detector
used to detect the cavity temperature.

Testing Procedure

1. Disconnect the RTD from the I/O control

d.

boar

Place the RTD in a bowl of ice water for 2

2.
minutes.

ake a resistance reading of the RTD.

T

3.

4. If RTD resistance is not 100

W, RTD is

defective and must be replaced.

NOTE: Use Figure 32 to determine resistance

eadings at temperatures other than freezing.

r

Smart Card Reader

The smar

t card reader allows the oven operator
to load a menu/firmware update from a smart
card. A menu that already exists in the oven can
also be saved to a smart card. For instructions,
see page 15.

Speaker

The speaker is separate from the control board,
and provides audible feedback to the oven oper­ator whenever a key is pressed or a fault occurs.

Thermostats - 120ºF (Close on Rise)

The cooling fan thermostats actuate the cooling
fans when the temperature in either end bell
reaches or exceeds 120ºF (49ºC).

Wire Harness

The wire harness distributes power to the oven’s
electrical components. S

ee pages 37-40 for

schematics.

ºF 0º +20º +40º +60º +80º +100º +120º +140º +160º +180º +200º

90.03W 97.39W 101.74W 106.07W 110.38W 114.68W 118.97W 123.24W 127.50W 131.74W 135.97W

0º

+200º

+400º

+600º

+100º

+200º

+300º

Figure 32: Temperature/Resistance Relationship Class B. Resistance @ 0ºC = 100.0, Alpha = 0.003850

135.97W 140.18W 144.38W 148.57W 152.74W 159.90W 161.04W 165.17W 169.29W 173.39W 177.47W

177.47W 181.54W 185.60W 189.64W 193.67W 197.69W 201.69W 205.67W 209.64W 213.60W 217.54W

217.54W 221.47W 225.38W 229.28W 233.17W 237.04W 240.90W 244.74W 248.57W 252.38W 256.18W

ºC 0º +10º +20º +30º +40º +50º +60º +70º +80º +90º +100º

100.00W 103.90W 107.79W 111.67W 115.54W 119.40W 123.24W 127.07W 130.89W 134.70W 138.50W

0º

138.50W 142.29W 146.06W 149.82W 153.58W 157.31W 161.04W 164.76W 168.46W 172.16W 175.84W

175.84W 175.91W 183.17W 186.82W 190.45W 194.07W 197.69W 201.29W 204.88W 208.45W 212.02W

212.02W 215.57W 219.12W 222.65W 226.17W 229.67W 233.17W 236.65W 240.13W 243.59W 247.04W

23

OVEN SYSTEMS

The Conveyor System

This section contains information about the
following components, as well as testing
procedures:

- G

ear Drive (Conveyor Motor)

- G

ear Drive (Conveyor Motor) Speed

Contr

oller (CMSC)

G

ear Drive (Conveyor Motor)

The conveyor motor is a 1610 RPM, 3-phase
motor with a built-in H

all E

ffect Sensor. The

speed of the conv

ey

or motor is controlled by the

v

oltage fr

equency applied to the windings from

the CMSC.

The H

all Effect Sensor sends a DC

pulse back to the contr

ol boar

d to v

erify motor

speed.

The contr

ol boar

d uses these pulses to

determine the output DC v

oltage to the

CMSC.

Single-belt HhC 2020 ovens contain one gear
drive. Dual-belt ovens contains two gear drives.

T

esting Procedure

1.

Disconnect line voltage from the unit.

2.

T

ake a resistance reading of the motor

windings and use F

igur

e 33 to v

erify that

the r

esistance r

eadings ar

e correct.

3.

I

f the r

esistance r

eadings are correct,

r

econnect the motor wiring and then apply

line v

oltage to the unit and check for

voltage applied to the motor windings.

4.

If no voltage is present, ensure the CMSC is
operating pr

operly (see below).

5. If CMSC is operating properly, inspect the
wir

e harness for damage or shorts.

6.

If the wire harness is intact and undamaged,
and the CMSC is operating pr

operly, the
gear drive is damaged or defective and must
be r

eplaced.

G

ear Dr

ive (Conveyor Motor) Speed

C

on

troller (CMSC)

The CMSC converts single-phase line voltage to
a thr

ee-phase output, and contr

ols the speed of

the gear driv

e via fr

equency output. The CMSC

r

eceiv

es an input voltage (0-10 VDC) from the
control board and adjusts the frequency output
to the gear drive.

Testing Procedure

WARNING: Capacitors within the CMSC
can retain charge after power is removed.
Exercise extreme caution when handling the
terminals.

WARNING: DO NOT connect incoming
AC power to output terminals U, V, or W.
This will seriously damage the Conv

eyor

M

otor S

peed Controller.

1.

E

nsur

e that no faults appear on the display

of the CMSC during o

v

en operation.

The
control will display the frequency output if
the system is operating correctly.

2. Check the input voltage on terminals L1 &
L2 (200-240

VAC) and the DC voltage

input on terminals 0V & AI (0.1-10

VDC).

3.

I

f no input voltage is present, inspect the
wire harness for damage or shorts (pages
37-38).

4. If DC control voltage is not present, check
v

oltage output at I/O board. If no voltage is

pr

esent at the I/O board, replace the board.
J10-A13 to J9-C6 = front belt
J10-A14 to J10-A6 = r

ear belt.

5. Check ohms of motor (Figure 33).

6.

If wire harness is intact and undamaged,
the CMSC is damaged or defective and
must be replaced.

To From Description Expected Resistance

White G

reyWinding (A-B)

215-217 W

White Black Winding (A-C)

215-217 W

Grey Black Winding (B-C)

215-217 W

White, Grey, or
Black

G

reen

Windings to
chassis

O

pen

Figure 33: Conveyor Motor Ohm Chart

24 OVEN SYSTEMS

A

ccessing Parameters

W

ARNING: DO NOT perform this
procedure unless instructed by TurboChef.
Changing the parameters to other than
those preset by TurboChef can damage
critical o

ven components.

NO

TE: “M

otor Rated Speed” (07) is RPM of

motor before gearbox, not after.

1.

Open the right end bell (page A-8).

2.

Locate the CMSC (page A-8).

3.

P

ress the

M key

.

4. Use the and keys to navigate the
parameters. S

ee page 40.

5. Press the M key to access the parameter
shown on the CMSC display.

6. Use the and keys to manipulate the
parameter.

7. Press the M key to return to the parameter
selection.

8. Repeat steps 4-7 to manipulate other
parameters as needed.

T

he Convection System

This section contains information about and
testing procedures for the following
components:

- Blower Motor

-

Blower Motor Speed Controller (BMSC)

-

Heaters

Blower Motor

The convection motor is a brushless AC
switch

r

eluctance type. Its top speed is 7100

RPM at 1 HP

. The motor is controlled by a

proprietary controller.

Testing Procedure

1. Disconnect line voltage from the unit.

2.

Make sure the motor spins freely.

3. Take a resistance reading of the motor
windings and use F

igur

e 34 to verify the

resistance readings are correct.

4. If the resistance readings are correct,
r

econnect motor wiring and then apply

line v

oltage to the unit and check for

v

oltage applied to the motor windings.

5. If no voltage is present, ensure the BMSC is
operating properly (see below).

6. If BMSC is operating properly, inspect the
wire harness for damage or shorts (pages
37-38).

7.

I

f wir

e harness is intact and undamaged and
the BMSC is operating properly, the blower
motor is damaged or defective and must be
replaced (page A-7 = lower, A-8 = upper).

Blower Motor Speed Controller (BMSC)

The motor controller is proprietary and will
only operate the convection motor described
above. The motor controller is controlled on
command from the I/O control board and a
0-10VDC speed command from the I/O
control board. See pages 27-28 for
tr

oubleshooting.

Heaters

The back and fr

ont convection heaters are
rated at 6750 watts at 208 VAC with a resist­ance of 14.4 O

hms. The heaters are controlled
by the K4/K5 solid state relay and can be
tested in

TEST MODE (see page 17).

T

o

F

romDescription

Expec

ted Resistance

Black Brown Winding (A-B)

2.3-2.8 W

Black White Winding (A-C)

2.3-2.8 W

R

ed

White W

inding (B-C)

2.3-2.8 W

N/A Green

W

indings to

chassis

Open

F

igure 34: Blower Motor Ohm Chart (Motor Windings)

Troubleshooting

25

TROUBLESHOOTING

Overview of Troubleshooting

This section contains information on the
follo

wing:

- F

ault code descriptions

- Fault code troubleshooting

- Non-fault code troubleshooting

F

ault C

ode Descriptions

F

ault codes are logged in a fault counter (page

15) for tr

oubleshooting. Upon completing the

ser

vice call and r

estoring successful operation of

the o

v

en, the technician should clear all faults

(see page 20).

F1: Blower Failure

This fault is display

ed if for thr

ee consecutiv

e
times the control board does not receive the
“status OK” signal from the BMSC.

The fault is cleared from the display if the
blowers successfully restart upon starting a cook
cy

cle or in TEST MODE.

F2: Low Temp During Cook

The o

v

en will emit a beeping noise and display

this fault if the cook cavity temperatur

e falls
25°F (14°C) below the current cooking profile’s
set temperature, and the fault will be logged in
the fault counter.

The fault is clear

ed fr

om the fault display if the
cook cavity temperature returns to within 25°F
(14°C) of the set cooking temperatur

e during

cooking or in

TEST MODE.

F4: Emergency Stop

This fault is displayed when the emergency stop
key is pr

essed.

This fault acts as a counter that logs ho

w many
times the emergency stop key (page 9) has been
pr

essed.

The fault is cleared from the display once the
o

ven is restarted.

F5: C

C Over Temp

This fault is display

ed if the cook cavity’s tem-

perature reaches or exceeds 625°F (329.4°C).

The fault is clear

ed from the display once the

o

v

en is restarted and the temperature recedes

belo

w 625°F (329.4°C).

F6: EC Over Temp

This fault is displayed if the temperature within
the electrical compar

tment reaches 149°F
(65°C); however, the oven will not shut down
and the fault will not be logged in the fault
count log unless it reaches 158°F (70°C).

The fault is cleared from the display when the
electrical compartment temperature recedes
belo

w 149°F (65°C).

F7: RTD Failure

This fault is display

ed if the R

TD cir

cuit is
open, shorted, reads above 645°F (340.5°C), or
reads below -40°F (-40°C).

The fault is cleared from the display if the RTD
circuit is closed, or the temperature reads within
645°F (340.5°C) and -40°F (-40°C)

F8: H

igh Limit

Tripped

This fault is display

ed if the high limit switch

trips.

The switch trips when the high limit

probe reads approximately 600°F (315.5°C).

The fault is cleared from the display when the
high limit switch is manually r

eset.

F9: Belt Fault

This fault occurs if the conveyor belt fails to
star

t or the conveyor is dragging.

The fault is cleared from the display if the
conv

eyor belt starts when initiating cooking.

26

TROUBLESHOOTING

Fault Code and Description When Active Refer to...

Warming Idle Cooking Test

F1: Blower Failure

ow Temp During Cook

F2: L

F4: Emergency Stop

ver Temp

C O

F5: C

F6: EC O

F7: R

F8: High Limit Tripped

F9: Belt Fault

Figure 35: Fault Code Table

NO

ver Temp

e

ailur

TD F

TE: All fault codes ex

a a a a

a

a a a a

a a a

a

a

a a a

a a a

a a a

a a a

cept F2 and F9 will terminate cooking upon disco

occurs will be logged in the in the fault count log (page 15), except F6.

Pages 27-28

age 29

P

N/A

age 30

P

age 31

P

age 32

P

Page 32

Page 33

very. Any fault that

27

TROUBLESHOOTING

Fault Code Troubleshooting

F

rom TEST MODE, you can test separate oven components to help diagnose an issue. To access TEST

MODE, see page 17.

Troubleshooting:

F1:BLOWER FAULT

Access the TEST MODE.
(page 17)
Ar

e the status indicators at

location 7 and 8 pr

esent

(page 18)?

NO

YES

7

8

Open Left End
Bell.

I

s a fault code

pr

esent on the

BMSC?

O

pen the Right

End Bell.

Is a fault code
present on the
BMSC?

See page 28.

YES

YES

NONO

Is the wiring connected properly?

Check the BMSC, blo

wer motor,

and I/O control board (see page

28).

Corr

ect wiring

or r

eplace I/O
control board,
BMSC, or
blower motor
if damaged
(page A-6 =
lower, A-8 =
upper).

Check the I/O control
boar

d, BMSC, and blower

motor wiring (pages 37-38).

I

s the blo

wer motor

spinning fr

eely?

NO

R

emo

v

e obstr

uction or, if

necessar

y

, r

eplace blo

wer

motor (page A-6 = lo

w

er

,

A-8 = upper).

YES

Do resistance measurements
between windings and
chassis agree with values on
motor windings resistance
table (Figure 36)?

YES

See page 28.

NO

R

eplace the

blo

w

er motor
(page A-6 =
lo

w

er

, A-8 =

upper).

To From Description Expected Resistance

B

lack

R

ed

W

inding (A-B)

2.3-2.8 W

B

lack

White W

inding (A-C)

2.3-2.8 W

Red White Winding (B-C)

2.3-2.8 W

N/A Green Windings to chassis Open

F

igure 36: Motor Windings Resistance Table

NO

YES

28 TROUBLESHOOTING

wer Motor Troubleshooting

Blo

NOTE: Continued from page 27.

erify motor spins freely.

V

1.
otor seized: Unplug oven and correct obstruction or replace motor.

M

-

- Motor spins freely: Verify motor windings (see Figure 36, page 27).

2. Verify motor windings are OK. Measure the resistance between windings and chassis.

Unplug oven and replace motor if resistances do not agree with the values in the table on
page 27. I

tatus indicators TBTB should be visible when motors are on in TEST MODE. If any of these

S

3.

indicators ar

f motor is OK, proceed to step 3, below.

e not pr

a. Disconnect control wiring.

esent (for example, TB_B):

ound the “S

r

. G

b

connector) to chassis (r

tatus OK” wire of the motor controller that is being tested (pin 5 on the J2

er motor controllers on

ence wiring schematic of the blo

efer

w

pages 37-40).

eeping the wir

c. K

oltage (reference drawing of Control Pinouts, page 39) while incrementing

ol v

contr

er speed in

w

blo

17 for an illustration of

e grounded, check terminals on the control wiring plug for 0-10 VDC

TEST MODE (see

MODE

TEST

anipulating

M

).

op and Bottom Blowers

T

, page 18, and page

d. If DC voltage is present throughout all speed settings in TEST MODE (see Manipulating

op and Bottom Blowers

T

. If not, check harness and/or replace I/O board.

motor contr

oller

, page 18, and page 17 for an illustration of

TEST MODE), replace

TROUBLESHOOTING

29

Troubleshooting:

F2: L

OW COOK TEMP

R

estar

t the oven, access the TEST MODE, and turn on

both the top and bottom blo

w

ers. Are the status indi-

cators at location 6, 7, 8, and 9 pr

esent (pages 18-19)?

Open the right end bell.

NO

F

ix wiring/connections.

I

s wir

e harness properly

connected?

NO

Fix connection.

Test the RTD (page 22
for resistance/
temperatur

e chart).

I

s the RTD damaged

or defective (page 22)?

NO

R

eplace the I/O control

board (page A-8).

YES

T

r

oubleshoot the

blo

w

ers (pages

27-28).

NO

YES

YES

Is the RTD properly connect­ed to the I/O control board
(page 37-40)?

YES

Are the nozzles and plenums
corr

ectly installed?

NO

Correctly reinstall the
nozzles and plenums.

YES

NO

R

eplace element(s).

Are all elements heating
(ensure amp draw is correct ­page 24)?

YES

30 TROUBLESHOOTING

Troubleshooting:

C OVER TEMP

F5: C

Is an F1 fault

esent?

pr

YES

Troubleshoot F1
fault (pages
27-28).

s anything obstr

I

egular air

r

NO

cook chamber?

NO

TEST

en in

lace the o

P

MODE and test the heaters

v

(page 17). Do measure­ments show the heaters are
ok (page 24)?

YES

s the solid state

I

elay functioning

r

NO

properly?

YES

TD damaged

s the R

I
or defectiv

e (page 22)?

YES

ucting

flow into the

YES

eplace the

R

NO

defectiv
heater(s).

eplace the SSR (page

R
A-7).

Replace the I/O control

NO

d (page A-8).

boar

emove the

R
obstr

e

uction.

est the RTD

T
(page 22 for r

esistance/

temperature chart).

31

TROUBLESHOOTING

Troubleshooting:

F6: EC

OVER TEMP

Ar

e the air filters on the back of

the o

v

en clean?

NO

Clean the air
filter(s) (page 7).

YES

I

s the o

ven hot?

NO

YES

A

ccess

TEST

MODE

(page

17). I

s the sta

­tus indicator at
position “b

”
(page 18) less
than 65?

NO

R

eplace the I/O

contr

ol boar

d

(page A-8).

Open the left and right
end bells. Are the
cooling fans running?

YES

Check for

-Dirt or debris in the cooling fan blades.

-A heat source near the filter.

YES

NO

Are the cooling
fans receiving
correct voltage
(page 37-40)?

YES

R

eplace the
cooling fans
(page A-5).

Is the cooling fan
thermostat closed?

NO

NO

Replace the
thermostat
(page A-6
and A-8).

YES

Check the
wiring (pages
37-40).

32 TROUBLESHOOTING

Replace the RTD
(page A-8).

Troubleshooting:

TD FAULT

F7: R

pen the right end bell.

O

YES

Is the RTD damaged or
defective (page 22)?

NO

Is the RTD
connected

operly to the

pr
I/O contr
boar

ol

d

(pages 37-40)?

NO

Is the RTD open? Using an ohmmeter,
measure at the control board (pages 37-

YES

40). RTD should measure
approximately 100 W at 32°F (0°C) See
page 22 for ohm/temperature chart.

YES

eset and determine why it

R
tripped - over temp, blower

e, etc.

failur

Check if the high limit probe

TD is damaged or defec-

or R
tive, replace if needed (page
A-8).

Troubleshooting:

F8: HIGH LIMIT

TRIPPED

Is the high limit thermostat
tripped (page 21)?

s the wiring

I

ect (pages

corr

YES

37-40)?

eplace the I/O

R
control board
(page A-8).

NO

YES

eplace the I/O

R
control board

NO

(page A-8).

Are all the contacts
closed on the high

NO

limit thermostat?

YES

ect wiring

Corr
(pages 37-40).

NO

eplace the high

R
limit thermostat
(page A-6).

Correct wiring
(pages 37-40).

33

TROUBLESHOOTING

Troubleshooting:

F9: BEL

T FAULT (Total Belt Run Failure)

Ar

e ther

e any obstructions that

ar

e blocking the conv

eyor’s

mo

v

ement or is the conveyor

belt damaged?

Remove obstruction or
replace/repair the conveyor and
restart the oven. Is the F9 fault
code still pr

esent?

YES

Remove the chain guard
(page A-4).
Is the chain damaged or
obstructed in any way?

NO

YES

R

emo

ve obstruction

or

, if necessar

y

,

r

eplace the chain.

YES

NO

Open the right end bell (also open the
left end bell if split belt conveyor). Is the
wiring correct from the conveyor motor
to the conv

eyor motor controller to the

contr

ol boar

d correct (pages 37-40)?

NO

Corr

ect wiring (pages

37-40).

Is the conveyor motor, CMSC, or
I/O control board damaged or
defective? (See Figure 37 for
motor winding r

esistance.)

YES

To From Description Expected Resistance

White G

ray

W

inding (A-B)

215-217 W

White Black Winding (A-C)

215-217 W

Gray Black Winding (B-C)

215-217 W

White, G

ray

, or Black

Chassis W

indings to chassisOpen

F

igure 37: Motor Ohm Chart (Motor Windings, not Hall Effect Sensor)

NO

Check that the CMSC
settings corr

ectly

corr

espond with

T

urboChef settings

(page 24 and 40).

YES

R

eplace par

ts as

r

equir

ed (see

appendix).

34 TROUBLESHOOTING

Non-F

ault Code Troubleshooting

This section pr

vides troubleshooting tips for issues that may occur independently of an oven fault.

o

Troubleshooting:

ooling S

C

ystem Issue

Is the oven in an area of moderate
temperature (120ºF [49ºC] or cooler)?

NO

oes the o

D

oom to v

r

YES

ven have

entilate

Relocate oven to
cooler area.

(not tightly enclosed

y other appliances

b
or fixtur

es)?

NO

Move oven to open area
or remove items that are
in close proximity.

YES

Is the air filter dirty and/or
the vent obstructed?

NO

YES

Clean or replace air
filter and/or r

uction.

obstr

emove the

Replace the cooling

s the cooling fan

I
thermostat closed?

YES

Is line voltage
applied (208-240
VAC) to the
cooling fan?

TE: There are two thermostats per unit. They are wired so that if either thermostat closes,

NO

NO

NO

YES

fan thermostat (page
A-6 and A-8).

Check wiring for pr

oblems

(pages 37-40).

Replace the cooling fans
(page A-5).

power is applied to both cooling fans.

TROUBLESHOOTING

35

Troubleshooting:

F

ood Not Cooking Properly

Does the problem occur for all
pr

ogrammed r

ecipes? For

example, ar

e all r

ecipes under-

cooked/o

v

ercooked/etc.?

I

s the food item in the

corr

ect starting state

(e.g., fr

ozen, fresh, etc.)?

I

s the correct
amount of food
(por

tion) being

cooked?

Ensure the
food item is
being pr

oper

­ly stored/pre­pared before
cooking.

Ensure that the correct
amount is being
cooked - not more or
less than the recipe
specifies.

I

s the food item being pr

epar

ed correctly
and consistently? For example, confirm
meat is sliced at corr

ect thickness, pizza

dough is correct consistency, etc.

E

nsure that the
food item is
properly prepared.

Troubleshoot the
fault(s) using the
steps on pages
27-33.

Are there any fault
codes pr

esent

(page 25)?

Replace the I/O
contr

ol boar

d

(page A-8).

D

oes the pr

oblem

occur E

VERY time the

food item is cooked?

YES

NO

YES

YES

NO

YES

NO

YES

NO

NO

NO

Correctly reinstall
plenums and nozzle
plates.

YES

Ar

e the conv

ey

or motors, CMSCs,
blowers, BMSCs, and heaters
working correctly (pages 23-24)? Is
the wire harness properly connected
(pages 37-40)?

Replace/correct the
operation of the
conveyor motors
and/or CMSCs,
blower and/or
BMSCs, heaters,
and/or wiring
harness. (pages 23­24, 37-40).

NO

YES

YES

Are the plenums and
nozzle plates corr

ectly

installed?

NO

36 TROUBLESHOOTING

Troubleshooting:

No Displa

y - Screen is Blank

YES

Is wiring from the
control board to
the display
(including the
ribbon cable) OK?

YES

Is 5 VDC present on pin 1 of
the J3 connector? (page 39)

YES

eplace the display and

R
ribbon cable.
(page A-8)

Does the keypad beep when a
key is pressed?

Replace the fuses (page A-7).

ect wiring.

Corr

f cable is damaged,

NO

I

eplace it.

r

eplace the power

R
supply (page A-8).

NO

Replace the I/O con­trol board (page A-8).

Check wiring from the
power supply to the control

d. Correct wiring if

boar
necessar

y (pages 37-40).

NO

NO

NO

Is the 24 VDC power
supply receiving

wer?

po

Is the power supply
output 24 VDC?

s the contr

I

eceiving corr

r
(pages 37-40)?

NO

Verify 5 VDC is present
on pin 1 of the J3
connector (page 39). I
not, replace the control

d (page A-8).

boar

YES

YES

ol board

ect VDC

YES

f

oubleshooting:

r

T
No Keypad I

YES

eplace the keypad (page A-8).

R

Is the keypad cable properly connected
to the contr

ol boar

If the problem persists, or if beeps occur when
buttons ar
ter on the display

e pressed but commands do not regis-

, replace the control board

(page A-8).

d?

nput

NO

Corr

ect wiring.

Schematics

SCHEMATICS

37

(CON-7002)

(NGC-3023)

(HHC-4120)

(HHC-6517-2)

(HHC-6630-2)

(TC3-0433)

(HHC-4120)

(HHC-6630-2)

(102075)

(NGC-3005)

FRONT

HCT-4162

208 VAC

BACK

HCT-4161

208 VAC

8 7 6 5 4

DASH

NO

A

KEYPAD

14

2

1

P4

21

P6

-

-

21

J6

---

-

14

14

-

-

-

-

-

- -

-

-

PRODUCTION

3

USED ONNEXT ASSY

APPLICATION

QA

2

CODE IDENT NO

NONE

D

SIZE

SCALE

DRAWING NO

KEY

1

3

SCHEMATIC, HHC-2020

VFD DISPLAY,

3PH, WYE, 380-415 VAC, 60 HZ/50

DATESIGNATURE

ENGINEER

DRAWN

CHECKED

TITLE

A

R

B

C

D

B

C

D

NOTES:

8 5

4

REVISIONS

LTR

DESCRIPTION

3

DWG NO

SH

1

DATE

APPROVED

1

F1: 20 AMPS CLASS CC (100599)
F2: 20 AMPS CLASS CC (100599)

A

RD - RED = +24VDC

OR - ORANGE = STATUS INPUT
WH - WHITE = CONTROL OUTPUT

BL - BLUE = LINE V (208/240)

BK - BLACK = 24 VDC COMMON

BR - BROWN = LINE V (208/240)

COLOR CODE (LINE VOLTAGE)

COLOR CODE (LOW/CONTROL VOLTAGE)

JKP

HCT-4131

HCT41311

HCT-4131

HCTGENERAL

PRODUCTION RELEASE

JKPIII

6/4/08

800-908-8726

TURBOCHEF TECHNICAL SUPPORT

WHITE

BLACK

WHITE

RED

21 22

12

11

C

NC

MANUAL RESET

32

31

C

NC

C

NC

OT1

C6 (RED)

A - ANALOG

C - STD I/O

B - ADV I/O

1

1

1

- ----26-25

- -P51 2

VFD DISPLAY

64 X 128 DOTS

-

P2

1 2

CN3

-

1 2

----

--

--

- ---

-

2625

-

25 26

CN2

2

1 3

J2-DISPLAY

CABLE, SMART CARD

(103023)

SMART CARD CONNECTOR

(100506)

2

F2

1

2

F1

1

OT 1 - 120°F

(102086)

SUPPLY

V-

V+

POWER

G

N

24VDC

L

YELLOW

FRONT CONVEYOR MOTOR
AND CONTROL (LEFT)

A-13 (BLK)

RTD

A-9

A-7

A-8

GRAY

C-8 (BLK)

C-19 (RED)

A-16 (RED)

B-22 (ORG

B-7 (BLK)

M

OV

D3 (REV)

VU W

A0

AI

10V

D1 (RUN)

24+

PE

RL1

RL2

L2

L1

COMMANDER SL

REAR CONVEYOR MOTOR

YELLOW

WHITE

BLACK

GRAY

WHITE

AND CONTROL (RIGHT)

RED

A-6 (BLK)

A-14 (RED)

L1

24+

A0

B-23 (ORG

B-8 (BLK)

OV

10V

AI

RL1

L2

U V

PE

W

D2 (FDW)

D1

RL2

COMMANDER SL

A-16 (RED)

M

Analog Speed 0-10V

ENABLE

STATUS OK

I/O COM

I/O COMMON

I/O COMMON

MTR

(CCW)

BTM

BLWR

M1RED

GREEN

M3 WHITE

M2 BLACK

3 PHASE

240 VAC

2

4

3

OUT

J5

1

6

B-10 (ORANGE)

B-2 (WHITE)

B-6 (BLACK)

A-17 (RED)

2
3

5

4

GND

J2

1

A1

B2

B1

A2

C-22 (WHT)

B

K5

- -

+

A

K4

+

C18 (RED)

1

2

2

1

L2-L1

L3-L2

L1-L3

B

A

B-17 (RED)

C-21 (WHT)

K6

8

6

7

4

2

3

B31

B32

B21

B11

B22
B12

A12

A22

A32

A21
A31

A11

VAC IN

180-240

1

3

2

6

STATUS OK

I/O COMMON

I/O COMMON

I/O COM

ENABLE

Analog Speed 0-10V

GREEN

MTR

(CCW)

TOP

BLWR

M1RED

M3 WHITE

M2 BLACK

BMSC

4

VAC IN

180-240

2
3

1

3 PHASE

240 VAC

J5

2
3

1

OUT

A-18 (RED)
A-5 (BLACK)
B-1 (WHITE)

C-1 (ORANGE)

2

4

5

3

GND

J2

1

OT 1 - 120°F

(102086)

C

NO

(101211)

(100443)

(100443)

BMSC

(LEFT) COOLING FANS (RIGHT)

(HCT-4205)

(HCT-4205)

D3 (REV)

D2 (FDW)

4

C-13 (WHT)

B-18 (RED)

0

8

6

7

2

K7

1

3

(101279)

(101279)

6kW

6kW

NO

C-22 (WHT)

BR BL

C7

C20

SPEAKER

(104155)

PINOUT

1

RELAY

0

4

6

7

2

3

8

EMI FILTER

6VSK1

EMI FILTER

6VSK1

(100539)

(100539)

HHC-1234

(100184)

(100193)

N N L3N L1L2

B11 (ELEMENT #, TERMINAL#)
B1_ = ELEMENT 1
B_1 = TERMINAL 1

A11A21A31

B32 B22 B12

B31

A32

A22 A12

B11B21

E

5 PIN, IEC60309, 32 AMP, VDE RATED
(ASSY, CORD P/N HCT-4116-3)

N

L3

L2

L1

(CON-7002)

(NGC-3023)

(HHC-4120)

(HHC-6517-2)

(HHC-6630-2)

(TC3-0433)

(HHC-4120)

(HHC-6630-2)

(102075)

(NGC-3005)

FRONT

HCT-4162

208 VAC

BACK

HCT-4161

208 VAC

38

SCHEMATICS

SCHEMATICS

39

CMSC PARAMETERS

40

SCHEMATICS

Appendix - Replacing
Oven Components

A-1

APPENDIX - REPLACING OVEN COMPONENTS

Replacing Oven Components

W

ARNING: Before removing or replacing any oven component, thoroughly read the safety

instr

uctions found at the front of this manual and Oven Systems

(pages 21-24). A

dhere to

all pr

ecautions and warnings outlined in these sections, as failure to do so could result in

serious injury or death.

Part Details...

L

ocate the Part Here...

Item Part Number Qty. Per Oven

O

utside of
End Bells
(Page A-4)

L

ef

t End Bell

(Page A-6)

R

igh

t End Bell

(Page A-8)

Air Filter HCT-4067 2

a

Back P

anel

HC

T-4105

2

a

Blower Motor Assembly HCT-4205 2

a a

Blower Motor Controller 100443 2

a a

Blo

w

er

Wheel

104107 2

a a

C

able

, Display, Power, 2-Pin

100193 1

a

C

able, Display, Ribbon

100184 1

a

Cable, Smart Card Reader 100182 1

a

Chain, Conveyor HCT-4143 1

Chainguar

d

, L

eft (Split-belt config only)

HC

T

-4038

1

a

Chainguar

d

, Right

HC

T

-4041

1

a

Channel HCT-4076 1

a

Control Board CON-7002 1

a

Conveyor Controller HHC-6630-2 2

a a

C

on

v

eyor Motor

HC

T

-4120

2*

a a

C

on

veyor (Single Belt)

HC

T

-4140

1

a

Conveyor (Split Belt 50/50) HCT-4096 1

a

Conveyor (Split Belt 70/30) HCT-4115 1

a

C

ooling F

an

T

C3-0433

2

a

Crumb Tray HCT-4045 2

a

Display, VFD NGC-3023 1

a

Distr

ibution Block

HC

T-4141

1

a

EMI Filter 100539 2

a a

Eyelid HCT-4028 2

a

F

inger Guard

100086 2

a

Fuse, 20 Amp, Class CC 100599 2

a

Fuse Block 103548 1

a

G

ear M

otor Cover (Single-belt config only)

HC

T

-4142

1

a

Hanger HC

T-4148

1

a

Hatch HCT-4209 1

a

Ha

tch Latch

100777 2

a

Heat Slinger 102708 2

a a

Heater, Back HCT-4161 1

a

Heater, Front HCT-4162 1

a

* Q

uantities will differ depending on conveyor type.

A-2

APPENDIX - REPLACING OVEN COMPONENTS

Part Details...

em

t

I

er Cover

t

Hea

Jetplate HCT-4099 2

Keypad HHC-1234 1

eg

L

Plenum HCT-4020 2

wer Cord

o

P

er Cord Retainer

w

o

P

Power Supply 101211 1

Power Supply Bracket HCT-4103 1

, Mechanical, K6

y

ela

R

Relay, Mechanical, K7 101279 1

Relay, Solid State, K4/K5 NGC-3005 1

TD

R

Shelf Tray (Crumb Tray Extension) HCT-4050 2

t Card Reader

Smar

Speaker 104155 1

Support, Top Plenum HCT-4169 1

hermostat, Cooling Fan

T

, High Limit

t

mosta

her

T

Voltage Sensor 100783 1

Wire Harness, EMI to Fan Control, Conveyor
Control

Wire Harness, EMI to Fan Control, Power
Supply, Conveyor Control

ire Harness, Fuse Block to EMI

W

ire Harness, Fuse Block to High Limit

W

Wire Harness, Fuse Block to SSR, 4" LG HCT-4086-9 1

Wire Harness, Fuse Block to SSR, 4.25" LG HCT-4086-8 1

Wire Harness, High Limit to Distribution
Block

e Harness, High Voltage, Main

ir

W

Wire Harness, LOV HCT-4163-1 1

ire Harness, SSR to Distribution Block

W

t Number

ar

P

-4032

T

HC

100785 4

HCT-4116-3 (NEMA
15-50P) or
HCT-4116-2
(IEC60309)

I5-9211 2

101279 1

HHC-6517-2 1

100506 1

102086 2

102075 1

T-4086-7

HC

HCT-4086-5 1

T-4086-6

HC

T-4086-3

HC

HCT-4086-4 1

-4086-1

T

HC

T-4086-2

HC

y. Per Oven

t

Q

Locate the Part Here...

utside of

O
End B

ells

eft End Bell

L

-6)

age A

(P

ight End Bell

R

-8)

age A

(P

(Page A-4)

1

a

a

a

a

a

1

a

a

a

a

a

a

a

a

a

a

a

a

a a

a

a

1

1

1

1

1

A-3

APPENDIX - REPLACING OVEN COMPONENTS

T

his page int

entionally

lef

t blank

.

A-4 APPENDIX - REPLACING OVEN COMPONENTS

Shelf Tray

Shelf Tray

Chain (behind guar

d)

and Chainguard, Right

C

on

veyor

C

rumb

Tray

Crumb Tray

Chainguard, Left

(not sho

wn)

G

ear M

ot

or C

over

Hatch

Ha

tch Latch

E

y

elid

Hea

ter

Channel

Plenums

Jetplates

Ha

tch

Support, Top Plenum

Hanger

Replacing Items - Outside of End Bells

WARNING: Before removing or replacing any oven component, thoroughly read the safety
instructions found at the front of this manual and Oven Systems (pages 21-24). Adhere to
all precautions and warnings outlined in these sections, as failure to do so could result in
serious injury or death.

CAUTION: Before removing/installing any component, make sure it is disconnected from

the wire harness (where applicable).

NOTE: Only single-belt ovens will have the Gear Motor Cover. Dual-belt ovens will have the

Chainguar

d, Left

.

Figure A-2: Inner Oven Components

Figure A-1: Front Oven Components

Keypad

Leg

APPENDIX - REPLACING OVEN COMPONENTS

I

tem

P

art Number

Har

dware Description

Har

dware Part

Number(s)

Air Filter HCT-4067 None None

Back Panel HCT-4105 Screw, #10-32 x .5, PPH, INT Tooth, SS 101460 (x2)

Chain, C

on

veyor

HC

T

-4143

None None

Chainguar

d

, Left

HC

T

-4038

None None

Chainguar

d, Right

HC

T-4041

None None

Channel HCT-4076 Screw, SH MTL, #8 x 1/2 Serrated PHTRH 101688 (x4)

Conveyor, Single HCT-4140 Chain, #35, 52 Links, With Master Link, Endless HCT-4143

C

on

v

eyor, Split Belt 50/50

HC

T

-4096

Chain, #35, 52 Links

,

W

ith Master Link, Endless

HC

T

-4143 (x2)

Conveyor, Split Belt 70/30 HCT-4115 Chain, #35, 52 Links, With Master Link, Endless HCT-4143 (x2)

C

ooling F

an

T

C3-0433

Nut, KEPS Hex, #6-32, EXT Tooth, CRES
Screw, SH MTL, #8 x 1/2 Serrated PHTRH

102961 (x4)
101688 (x4)

C

rumb

Tray

HC

T

-4045

None None

E

yelid

HC

T-4028

S

crew, Thumb w/W HD, #1/4-20x1/2”, SS

101752 (x2)

F

inger Guar

d

100086 None None

G

ear M

ot

or Cover

HC

T

-4142

Nut

, #10-32, SERR HEX FLNG, SS

100903 (x4)

Hanger HC

T

-4148

S

cr

ew

, SH MTL, #8 x 1/2 Serrated PHTRH

101688 (x4)

Ha

t

ch

HC

T

-4209

S

cr

ew

,

Thumb w/W HD, #1/4-20x1/2”, SS

101752 (x2)

Hatch Latch 100777 Screw, SH MTL, #8 x 1/2 Serrated PHTRH 101688 (x3)

Hea

t

er

, Back

HC

T

-4161

S

cr

ew

, SH M

TL, #8 x 1/2 Serrated PHTRH

101688 (x22)

Heater, Front HCT-4162 Screw, SH MTL, #8 x 1/2 Serrated PHTRH 101688 (x22)

Heater Cover HCT-4032 Screw, SH MTL, #8 x 1/2 Serrated PHTRH 101688 (x14)

Jetplate HCT-4099 None None

Keypad HHC-1234 None None

L

eg

100785 None None

Plenum HCT-4020 None None

Power Cord Retainer I5-9211 Screw, SH MTL, #8 x 1/2 Serrated PHTRH 101688 (x2)

Shelf Tray HCT-4050 None None

Sup

port, Top Plenum

HC

T-4169

S

crew, SH MTL, #8 x 1/2 Serrated PHTRH

101688 (x4)

Cooling Fan

Back Panel

Finger Guard

Back P

anel

Back Panel

Hea

ter Cover

A

ir Filter

A

ir Filter

P

ower Cord Retainers

Figure A-3: Rear Oven Components

A-5

A-6 APPENDIX - REPLACING OVEN COMPONENTS

Replacing Items - Left End Bell

WARNING: Before removing or replacing any oven component, thoroughly read the safety
instructions found at the front of this manual and Oven Systems (pages 21-24). Adhere to
all precautions and warnings outlined in these sections, as failure to do so could result in
serious injury or death.

CAUTION: Before removing/installing any component, make sure it is disconnected from

the wire harness (where applicable).

NOTE: Single belt ovens will not have a Conveyor Motor in this location. Instead, the Gear

M

otor Co

ver

will be installed (see page A-4).

Conveyor Controller

Conveyor Motor

Distribution Block

EMI F

ilter

Thermostat, High Limit

Blo

w

er Assembly

Figure A-5: Blower Motor Assembly Detail

Blower Wheel

Hea

t Slinger

F

igure A-4: Left End Bell Components, Left End Bell Open

Thermostat

A-7

APPENDIX - REPLACING OVEN COMPONENTS

Blower Motor Controller

Relay, Solid State, K4/K5

R

elay, Mechanical, K6

Fuse Block

20 A

mp Fuse, Class CC

F

igur

e A-6: Left End Bell Components, Back Panel Removed

I

tem

P

art Number

Har

dware Description

Har

dware Part

Number(s)

Blo

w

er Motor Assembly

HC

T

-4205

Nut, 1/4-20, Serrated HEX Flange, Plated Steel
Screw, #10-32 x 5/8, SKT HD, PLT
S

tandoff

, #10-32 x I, F/F, 3/8 HEX, PLT

Spac

er, #10 (.192) x 3/8 OD X 7/16, AL

Screw, #10-32 x 1”, PHTRHD, SS

100906 (x4)
104104 (x4)
104105 (x4)
104111 (x4)
102941 (x4)

Blo

wer Motor Controller

100443 Nut

, KEPS HEX, #6-32, EXT Tooth, CRES

102961 (x4)

Blower Wheel 104107 None None

Conveyor Controller HHC-6630-2 Nut, KEPS HEX, #6-32, EXT Tooth, CRES 102961 (x4)

C

on

v

eyor Motor

HC

T

-4120

Nut P

la

t

e

, 1/4-20

S

cr

ew

, 1/4-20 x 3/4 HEX Washer HD Serrated, CRES

Spr

ocket

, Chain 035 .5”

Bore 10 T

HC

T

-4107 (x2)
101396 (x4)
103562

Distribution Block HCT-4141 Nut, #10-32, SERR HEX FLNG, SS 100903 (x2)

EMI Filter 100539 Nut, KEPS HEX, #6-32, EXT Tooth, CRES 102961 (x2)

F

use, 20 Amp, Class CC

100599 None None

F

use Block

103548 Nut

, #8-32, HEX, SS

101000

Heat Slinger 102708 None None

R

ela

y

, M

echanical, K6

101279 Nut

, KEPS HEX, #6-32, EX

T

T

ooth, CRES

102961 (x2)

R

ela

y

, Solid State, K4/K5

NGC-3005 S

cr

ew

, #8 x 3/8 PH MOD TRUSS CRES

101682 (x2)

T

her

mosta

t

, Cooling Fan

102086 S

cr

ew

, #6 x 1/2, PPHD

, DRL-PT, SS

101687 (x2)

Thermostat, High Limit 102075 Screw, M4X 0.7 x 8, PPHD, INT Tooth, SS 101672 (x2)

Power Cord

HCT-4116-3 or
HC

T

-4116-2

None None

Power Cord

A-8

P

ower Supply and Bracket

Display, VFD

Card Reader

Control Board

Speaker

EMI F

ilter

F

igure A-8: Right End Bell Components, Back Panel Removed

APPENDIX - REPLACING OVEN COMPONENTS

Replacing Items - Right End Bell

WARNING: Before removing or replacing any oven component, thoroughly read the safety
instructions found at the front of this manual and Oven Systems (pages 21-24). Adhere to
all precautions and warnings outlined in these sections, as failure to do so could result in
serious injury or death.

CAUTION: Before removing/installing any component, make sure it is disconnected from

the wire harness (where applicable).

Blo

w

er Motor

Assembly

RTD

Conveyor Motor

Voltage Sensor

Relay, Mechanical, K7

C

on

veyor Controller

Blower Motor Controller

Figure A-7: Right End Bell Components, Right End Bell Open

Thermostat

A-9

APPENDIX - REPLACING OVEN COMPONENTS

I

tem

P

art Number

Har

dware Description

Har

dware Part

Number(s)

Blo

w

er Motor Assembly

HC

T

-4205

Nut, 1/4-20, Serrated HEX Flange, Plated Steel
S

cr

ew, #10-32 x 5/8, SKT HD, PLT

S

tandoff

, #10-32 x I, F/F, 3/8 HEX, PLT

Spac

er, #10 (.192) x 3/8 OD X 7/16, AL

Screw, #10-32 x 1”, PHTRHD, SS

100906 (x4)
104104 (x4)
104105 (x4)
104111 (x4)
102941 (x4)

Blo

wer Motor Controller

100443 Nut

, KEPS HEX, #6-32, EXT Tooth, CRES

102961 (x4)

Cable, Display, Power, 2-Pin 100193 None None

Cable, Display, Ribbon 100184 None None

C

able

, Smar

t Card Reader

100182 None None

C

on

trol Board

C

ON-7002

Nut, KEPS HEX, #6-32, EXT Tooth, CRES
Standoff, #6 x 1/2 long, Thru Round

102961 (x4)
101869 (x4)

Conveyor Controller 103581 Nut, KEPS HEX, #6-32, EXT Tooth, CRES 102961 (x4)

C

on

v

eyor Motor

HC

T

-4120

Nut P

la

t

e, 1/4-20

S

cr

ew

, 1/4-20 x 3/4 HEX Washer HD Serrated, CRES

Spr

ocket

, Chain 035 .5” Bore 10 T

HC

T

-4107 (x2)
101396 (x4)
103562

Displa

y, VFD

NGC-3023

Nut, KEPS HEX, #4-40 EXT Tooth
S

tandoff

, R

ound

, .12 ID, .25 OD x .50 long

102960 (x4)
101954 (x4)

EMI F

ilter

100539 Nut

, KEPS HEX, #6-32, EXT Tooth, CRES

102961 (x2)

Power Supply 101211 Screw, M3 x 8mm long, PPHD, SS 101688 (x3)

Power Supply Bracket HCT-4103 Nut, KEPS HEX, #6-32, EXT Tooth, CRES 102961 (x2)

Relay, Mechanical, K7 101279 Nut, KEPS HEX, #6-32, EXT Tooth, CRES 102961 (x2)

RTD HHC-6517-2 Screw, SH MTL, #8 x 1/2 Serrated PHTRH 101668

Smar

t C

ar

d R

eader

100506

Nut, #6-32, Serrated Hex Flange
S

cr

ew

, 6-32 x .38, PFH, 100DEG, SS

S

tandoff

, #6-32 x 1/2, M/F

, Hex, Zinc

100902 (x3)
101430 (x3)
101941 (x3)

Speaker 104155

Clip

, Speaker M

oun

ting

S

cr

ew

, #8 x 3/8 PH MOD

TRUSS CRES

HC

T

-4104
101682 (x2)

T

hermostat

102086 S

crew, #6 x 1/2, PPHD, DRL-PT, SS

101687 (x2)

Voltage Sensor 100783 Nut, KEPS HEX, #6-32, EXT Tooth, CRES 102961

vice or information:

Accelerating the World of Cooking

TM

Corporate Headquarters

S

ix Concourse Pkwy, Suite 1900

A

tlanta, Georgia 30328 USA

+1 678.987.1700

PHONE

+1 678.987.1750

FAX

S

ales & Marketing:866.90TURBO

Global Operations

4240

International Pkwy, Suite 105

Carr

ollton, Texas 75007 USA

+1 214.379.6000

PHONE

+1 214.379.6073

FAX

C

ustomer Service:800.90TURBO

+1 214.379.6000

turbochef

.com

or ser

F

AMERICA CALL

TH

WITHIN

NOR

Customer Service at 800.90TURBO or

OUTSIDE NORTH AMERICA CALL

[phone] or Your Authorized Distributor

Part Number: HCT-4202/Revision B/July 2008

y Code: NA/EU

Countr