Alto-Shaam 750-TH/III Operation And Care Manual

Brand: Alto-Shaam

Model: 750-TH/III

Category: Print & Scan

Type: Operation And Care Manual

This manual is also suitable for

#8311 • 8/01

PRINTED IN U.S .A .

OPERATION and CARE MANUAL

COOK/HOLD/SERVE SYSTEMS

W164 N9221 Water Street

●

P.O. Box 450

●

Menomonee Falls, Wisconsin 53052-0450 U.S.A.

PHONE: 262.251.3800 FAX: 262.251.7067 • 800.329.8744 U.S.A. ONLY WEBSITE:

800.558.8744 U.S.A./CANADA 262.251.1907 INTERNATIONAL www.alto-shaam.com

LOW TEMPERATURE OVENS

ELECTRONIC COOKING AND HOLDING

MODELS:

500-TH/III 750-TH/III

1000-TH/III 1200-TH/III

O&C MANUAL #8311 • TH/III FAMILY

INDEX

Section 1 — Installation

Unpacking and Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1200-TH/III Installation Requirements . . . . . . . . . . . . . . . . . . . . . 2

Oven Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Section 2 — Care and Cleaning

Clean the Oven Daily. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Clean the Probes Daily . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Check the Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Check Overall Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Section 3 — Control

Control Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Audible Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . 6

Cook by Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Cook by Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preset Menu Key Programming . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Cook Using Preset Menu Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Section 4 — Printer Option

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connecting the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Section 5 — User Options

Beeper Volume Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Fahrenheit/Celsius Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Language Choices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Printing Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

On-line Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

On-line Printing Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Preset Keys Lock/Unlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Control Panel Lock/Unlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Section 6 — Service

Determining Unit Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Voltage Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Unit Option Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Drip Tray Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Cord Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Service View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Service View Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Cable Heating Service Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Service View - Electronic Components . . . . . . . . . . . . . . . . . . . . 22

Service View Parts List - Electronic Components . . . . . . . . . . . . . 24

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Transportation Damage and Claims. . . . . . . . . . . . . . . . . . . . . . . . . 29

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

INDEX

O&C MANUAL #8311 • TH/III FAMILY

PG. 1

SECTION 1 INSTALLATION SECTION 1

Unpacking and Setup

The Alto-Shaam Cook

and Hold oven has been

thoroughly tested, checked

for calibration, and inspect-

ed to insure only the highest

quality cabinet is provided.

When you receive your cabinet, check for any possi-

ble shipping damage and report it at once to the

delivering carrier. See Transportation Damage & Claims section.

The cabinet, complete with unattached items and

accessories, may be delivered in one or more packages.

Save all the information and instructions packed

inside the cabinet. Complete and return the warran-

ty card to the factory as soon as possible to insure

prompt service in the event of a warranty parts and

labor claim.

Casters or legs, whether standard or optional,

must be installed on the oven before use. For the

best service, the oven should be installed level. The

oven should not be installed in any area where it

may be affected by steam, grease, dripping water,

high temperatures or any other severely adverse

conditions.

Single compartment electronic cook and hold

ovens can be stacked with an identical oven. The

750-TH/III can also be stacked with a 767-SK/III

smoker. In order to maintain parameters set for

Demko Certification, the full perimeter bumper must

be ordered and installed on the lower oven.

NOTE: Any claims for warranty must

include the full model number

and serial number of the cabinet.

Electrical Installation

An identification tag is permanently mounted on

the cabinet. Make certain the model number and

marked electrical ratings match your order. Note

the serial number for your records.

If necessary, a proper receptacle or outlet config-

uration, as required for the individual equipment

model, must be installed by a licensed electrician in

accordance with applicable, local electrical codes.

The oven must be grounded in accordance with

requirement of the National Electrical Code or

applicable local codes.

The oven must be set to the line voltage provided by

your electric power supplier. The oven defaults to

240V. To change the voltage, refer to Section 6

- Service located in this manual.

The main power switch is located at the back of

the oven. After wiring and power connection has

been completed, turn the main power switch to the

“

ON” position. This switch can be left “ON” for daily

use, but should be turned “OFF” when cleaning,

performing maintenance or repairs to the unit.

Remember to position the oven so that the

power supply cord is easily accessible in case of an

emergency.

EXAMPLE

SERIAL NUMBER AND WARRANTY CODE

MAXIMUM RATED

WATTAGE

IDENTIFICATION MODEL NUMBER

MAXIMUM RATED VOLTAGE MAXIMUM RATED FREQUENCY

MODEL

SERIAL NO. WATTS

1 PH

VOLTS

xxx-xx

xxxx-xx xxxx

HZxxx

ALTO-SHAAM INC. MILW. WI. PAT. NO. 3521030

INSTALLATION REQUIREMENT!

FOR CORRECT OPERATION,

CONTROL MUST BE SET TO

MATCH THE POWER SUPPLY LINE.

Beeper

Port

Printer

Port

Main

Power

Switch

Cord

Inlet

Cord Replacement

Information Label

Hi-Limit

Reset

Software

ID Tag

Sample

Rating and

Certification

ID Tag

Single Cavity Oven

Back View

OFF

O&C MANUAL #8311 • TH/III FAMILY

PG. 2

SECTION 1 INSTALLATION SECTION 1

1200-TH/III Installation Requirements:

Permanent wiring for this model series

must be installed by a licensed electrician

in accordance with applicable, local

electrical codes.

Tether Attachment for Permanent Wiring:

A) A permanently connected appliance, with casters

attached, must be tethered to the building structure,

in two places, to limit movement of the appliance

without depending on or transmitting stress to the

electrical conduit.

B) A hole on each side of the rear center grill, lower

flange, is provided for attaching two tether cables.

The other end of each should be anchored to the wall

structure with hardware sufficient to withstand 200

pound pull. (1/16" aircraft cable and 1/4" x 2" lag

bolts are recommended.)

C) The appliance shall be installed using flexible conduit,

with system meeting requirements of National Electric

Code for appliance rating. International units should

meet national or country code.

Beeper

Ports

Upper

Lower

Printer

Ports

Upper

Lower

Power

Switch

Power

Inlet

Upper Cavity

Hi-Limit Reset

Upper Cavity

Software ID

Tag

Sample

Lower Cavity

Software ID

Tag

Rating and

Certification

ID Tag

Double Cavity Oven

Top Back View

Double Cavity Oven

Mid-Section Back View

Ambient

Chamber Fan

Holes for Lanyard Tether

Cord Attachment

Lower Cavity

Hi-Limit Reset

Cord Connection for Semi-Permanent Installation:

A) Use UL listed (or appropriate for country of

installation) grounding type plug with integral

cord grip that is rated for 250 Volts, 30

Amperes, Single Phase, and 10 gauge cord with

insulation system meeting codes for installation.

B) Conductors of supply cord must be connected to

terminal block marked L1 and L2 with greater

length for ground lead to center terminal

marked GND.

O&C MANUAL #8311 • TH/III FAMILY

PG. 3

SECTION 1 INSTALLATION SECTION 1

Oven Characteristics

The cabinet is equipped with a special, low-heat-density, heating cable. Through

the Halo Heat concept, the heating cable is mounted against the walls of the cooking

and holding compartment to provide an evenly applied heat source, controlled by an

oven sensor. The design and operational characteristics of the unit eliminates the need

for a moisture pan or a heat circulating fan. Through even heat application, the food

product is cooked evenly and capable of being held for longer time periods.

Printing

The electronic cook and hold oven is equipped with a serial data port for connec-

tion to a serial printer or PC terminal. This will provide temperature recording data

(HACCP protocol) as well as setup and diagnostic information. Refer to the section on

printing for additional details.

Start-Up

1. Before operating the oven, clean both the interior and exterior of the unit

with a damp cloth and any good alkaline or alkaline chlorinated based

commercial detergent at the recommended strength. Rinse surfaces by

wiping with a sponge and clean warm water to remove all deter-

gent residue. Wipe dry with a clean cloth or air dry.

2. Wipe door gaskets and control panel dry with a soft cloth.

3. Clean and install the oven side racks, oven shelves, and external

drip tray. Shelves are installed with curved edge toward the back

of the oven. Insert the drip pan on the

interior bottom surface of the oven.

4. Before operating the unit with product, become familiar with the

operation of the controls. Read the following "Control

Description" and "Operation" section of this

manual and operate the various control functions.

At no time should

the oven interior or exterior

be steam cleaned, hosed

down, or flooded with water

or liquid solution. Do not

use water jet to clean.

Severe damage or electrical

hazard could result voiding

the warranty.

Bumper, rubber, full perimeter w/casters

— 1000-TH/III . . . . . . . . . . . . . . . . . . . .44091

— 750-TH/III . . . . . . . . . . . . . . . . . . . . .44090

— 500-TH/III . . . . . . . . . . . . . . . . . . . . .44089

Carving Holders

— Prime Rib Holder . . . . . . . . . . . .HL-2635

— Ship Round Holder w/pan . . . . . . .4459

Casters, 3" (76mm) . . . . . . . . . . . . . . . .14227

Casters, 5" ( 127mm) . . . . . . . . . . . . . . . .4007

Drip Pan, Standard, w/drain and screen

— 1000, 1200-TH/III . . . . . . . . . . . . . . .14824

— 750-TH-III . . . . . . . . . . . . . . . . . . . . .14831

— 500-TH-III . . . . . . . . . . . . . . . . . . . . .14813

Drip Pan, Extra Deep

— 750, 1000, 1200-TH/III . . . . . . . . . . . .1115

Drip Pan, Extra Deep with Drain

— 1000, 1200-TH/III . . . . . . . . . . . . . . . .4932

Key Lock for Handle . . . . . . . . . . .LK-22567

Legs, 6" (152mm)

— 500, 750, 1000-TH-III . . . . . . . . . . . . .5205

Leg Kit Option, 1200-TH-III ONLY . . . .44093

Pocket Thermometer, °F . . . . . . . . .TH-3300

Pocket Thermometer, °C . . . . . . . . .TH-3412

Serial Printer & Cable Pkg

— 208-240V . . . . . . . . . . . . . . . . . . . . . .14218

— 230V . . . . . . . . . . . . . . . . . . . . . . . . . .14679

Serial Printer Paper . . . . . . . . . . . .PO-33397

Shelves, S/S Rib Rack

— 1000, 1200-TH/III . . . . . . . . . . . .SH-2773

— 750-TH/III . . . . . . . . . . . . . . . . . .SH-2743

Shelves, S/S Flat Wire

— 1000, 1200-TH-III . . . . . . . . . . . .SH-2325

— 750-TH-III . . . . . . . . . . . . . . . . . .SH-2324

— 500-TH-III . . . . . . . . . . . . . . . . . .SH-2326

Wire pan grid

— 1200, 1000, 750-TH-III . . . . . . . .PN-2115

➥18" X 26" (457mm x 660mm) Insert

OPTIONS and ACCESSORIES

This wall-friendly full perimeter bumper is

now offered as standard on the

1200-TH-III cook/hold oven.

It is offered as an option for the

Models 500, 750, and 1000-TH-III

cook/hold ovens.

O&C MANUAL #8311 • TH/III FAMILY

PG. 4

SECTION 2 CARE AND CLEANING SECTION 2

Under normal operating conditions, this oven will provide you with long and trouble-free

service. There is no preventative maintenance required, however, the following guidelines will

maximize the potential life and trouble-free operation of this oven.

Clean the Oven Daily

The cleanliness and appearance of this equipment will contribute considerably to

operating efficiency and savory, appetizing food. Good equipment that is kept clean

works better and lasts longer.

1. Turn power switch located at the back of the oven to the "OFF" position. Let unit cool.

2. Remove all detachable items such as wire shelves, side racks, and drip pan. Clean

these items separately.

3. Wipe the interior metal surfaces of the oven with a paper towel to remove loose

food debris.

4. Clean interior with a damp cloth or sponge and any good alkaline or alkaline

chlorinated based commercial detergent at the recommended strength.

5. Spray heavily soiled areas with a water soluble degreaser and let stand for

10 minutes, then remove soil with a plastic scouring pad.

NOTE: Avoid the use of abrasive cleaning compounds, chloride based cleaners,

or cleaners containing quaternary salts. Never use hydrochloric acid

(muriatic acid) on stainless steel.

6. Wipe control panel, door vents, door handles, and door gaskets thoroughly

since these areas harbor food debris.

7. Rinse surfaces by wiping with sponge and clean warm water.

8. Remove excess water with sponge and wipe dry with a clean cloth or air dry.

Leave doors open until interior is completely dry. Replace side racks and shelves.

9. Wipe door gaskets and control panel dry with a clean, soft cloth.

10. Interior can be wiped with a sanitizing solution after cleaning and rinsing.

This solution must be approved for use on stainless steel food contact surfaces.

11. To help maintain the protective film coating on polished stainless steel, clean the

exterior of the cabinet with a cleaner recommended for stainless steel surfaces.

Spray the cleaning agent on the cloth and wipe with the grain of the stainless steel.

12. Clean any glass with a window cleaner.

Always follow appropriate state or local health (hygiene) regulations regarding all

applicable cleaning and sanitation requirements for equipment.

Clean the Probes Daily

Remove all food soil from probes. Wipe entire probe and cable assembly with warm

detergent solution and a clean cloth. Remove detergent by wiping each probe and

cable with clean rinse water and a cloth. Wipe probes and probe brackets with

disposable alcohol pad or sanitizing solution recommended for food contact

surfaces. Allow probe and cable to air dry in probe holding bracket.

Check the Cooling Fan in the Oven Control Area

While the oven is warm, check that the cooling fan in the oven control area

is functioning. The fan is located at the back of the unit, toward the top.

Model 1200-TH/III has an additional ambient chamber fan located in the back,

centered between the top and bottom cavity. Both fans must be functioning

in order for the oven to work properly.

Check Overall Condition of the Oven Once a Month

Check for physical damage and loose screws. Correct any problems before

they begin to interfere with the operation of the oven.

MAKE CERTAIN

THE UNIT IS

DISCONNECTED

FROM THE

POWER

SOURCE BEFORE

CLEANING

O&C MANUAL #8311 • TH/III FAMILY

PG. 5

SECTION 3 CONTROL SECTION 3

1. On/Off Key

The ON/OFF control system key operates the

functions of the control panel. If there is any

power loss during operation, the

ON/OFF indicator

light will flash. To clear, push key and release.

2. Cook Key — Temperature range 200° to 325°F (93° to 162°C)

Used to select cooking mode and to review the

cook temperature setting.

3. Time Key — Maximum time 24 hours

Used to select cook time and to review set time.

4. Probe Key — Temperature range 50° to 195°F (10° to 91°C)

Used to select internal product probe temperature

mode and to review probe temperature setting.

5. Hold Key — Temperature range 60° to 205°F (15° to 96°C)

Used to select food holding mode and to review set

holding temperature.

6. Lock Indicator

When illuminated, this symbol indicates settings

used in the cooking sequence are locked and can-

not be changed.

7. Halo Heat Indicator

When the oven is preheating, the Halo Heat indi-

cator will illuminate during preheating and

remain steady until the oven reaches the set

cooking temperature. When the temperature has

stabilized, the indicator will illuminate periodi-

cally as the oven calls for heat.

8. Oven Preheat Light

Illuminates until the oven is preheated.

9. LED Display

Indicates interior oven air temperature, internal

product probe temperature, time or, when used

in conjunction with other keys, will review origi-

nal cooking, holding and probe temperature set-

tings. The display will also indicate various pro-

gramming and diagnostic information.

10. Ready Indicator Light

Illuminates when the oven has finished preheating.

11. UP and DOWN Arrows

Used to increase or decrease set time, including

cooking, holding and probe temperature settings.

12. Start Key

Used to initiate a selected mode sequence when

pressed and released. You may stop any mode of

operation by pressing and holding the Start Key

until you hear a beep.

13. Green Indicator Lights

Located within each function key, the green

light functions as an operator prompt indicating

additional operator action is required and also

identifies current mode of operation.

14. Amber Indicator Lights

Located below the Cook, Time, Probe and Hold

Keys, these indicators will illuminate to identify

the current mode of operation and allows the

operator to identify the information currently

shown in the LED display.

15. Preset Program Keys

Provides memory storage and operation of up to

eight operator set cooking programs for specific

products (A thru H). I enables locking abilities.

16. Cancel Key

Used to erase a program from memory storage.

PRESETS

ABCDEFGHI CANCEL

      



   







CONTROL FEATURES

Do not use the oven if the controls are not properly functioning. Refer to the Trouble

Shooting Guide located in this manual or call an authorized service technician.

IMPORTANT



O&C MANUAL #8311 • TH/III FAMILY

PG. 6

SECTION 3 CONTROL FEATURES SECTION 3

OVEN BEEPING is used to indicate a yes or no response to operator input.

Beeps also indicate mode changes and error conditions.

One brief beep indicates a yes (enabled) response to the information entered into the control.

Two brief beeps indicate a no (disabled) response to the information entered into the control.

A beep that lasts for one second indicates an oven mode transition. Example: Preheat to Ready-Start.

Three brief beeps indicate the oven is in the ready mode for product loading and start-up.

Four brief beeps indicate an existing fault condition. Refer to the Trouble Shooting section of this manual.

Beeper volume can be changed. With the oven in the

off mode, press and hold the Up Arrow Key and the Preset Menu "C"

Key at the same time for a minimum of four seconds. The oven will begin to beep in varying tones. Release both keys when

the desired volume is reached.

AUDIBLE SIGNALS

Turn the Oven Control Panel Off:

Press and hold the ON/OFF Key for three seconds. Oven will

beep. The

ON/OFF indicator light will go out.

Stop an Operation:

Press and hold the Start Key for several seconds until the control

beeps, indicating the operation has been cancelled. The oven will

remain in a power-on state.

Arrow Keys:

Cook, Hold and Probe Temperature set points can be adjusted by

1° when pressing the Arrow Keys. To change a set point more

rapidly,

press and hold the Arrow Key along with the key for the

temperature function, and the temperature changes in steps of

10°F or 5°C.

The

Time setting is adjusted in increments of one minute by press-

ing the Arrow Keys. To make adjustment in steps of ten minutes,

press and hold the Time Key and Arrow Key at the same time.

Probe Usage:

When the probe is left in the probe bracket, the LED temperature

display will indicate the ambient air temperature inside the oven.

To use the probe for cooking remove it from the bracket and wipe

the full length of the metal probe with a disposable alcohol pad to

clean and sanitize before using.

Only the tip of the probe senses the internal product temperature,

therefore, it is important the tip be placed correctly in the product

for internal temperature accuracy. Push the probe tip halfway into

the product, positioning the tip at the center of the food mass.

When inserting the probe into solid foods such as meat roast or

poultry breasts, push the probe in from a straight downward posi-

tion or in from the side to the center position. If placing into a

semi-liquid or liquid product, the probe cable must be secured to

keep the probe positioned properly. Do not let the probe tip touch

the edges, bottom or side of a container. Tape the probe cable to

the lip or edge of the container.

Display High/Low Probe Temperatures:

To observe the recorded maximum or minimum probe tem-

perature during a cooking program press the following keys:

Highest Temperature: Press Probe Key and Up Arrow Key

at same time.

Lowest Temperature: Press Probe Key and Down Arrow

Key at same time.

Halo Heat Indicator:

When the oven is preheating the Halo Heat indicator light

will remain illuminated until it reaches the set cook tempera-

ture. Once the temperature has stabilized, this indicator will

illuminate periodically as the oven calls for heat.

Green and Amber Indicators:

Each program key includes a green light which indicates a

requirement for additional programming by the operator or

the current operational state of the oven.

The Cook, Time, Probe, and Hold keys include an amber

indicator light to identify the information being displayed.

Green

Amber

Power Fail Detect:

If the power were to fail for any reason while heating, the

control will retain, in memory, the programmed operating

conditions. When power is restored, the control will resume

operating from the point where it was interrupted and the

ON/OFF indicator light will flash, indicating that such an

event did occur. The operator can turn off the flashing light

by pressing the

ON/OFF key. It is strongly recommended

that if such an event has occurred, ensure that the food is

safe for consumption according to local health regulations.

OPERATING FEATURES & FUNCTIONS

TIME

●

O&C MANUAL #8311 • TH/III FAMILY

PG. 7

SECTION 3 CONTROL OPERATION SECTION 3

Cook by Time:

Press and release control ON/OFF key.

• The green indicator light on the ON/OFF key will illuminate.

• The oven will beep for one second.

• The oven will begin operating in the hold mode.

• The amber hold indicator will illuminate.

• The previously set hold temperature will be displayed.

Press the Hold Key.

➥To change the hold temperature, press the Up or Down Arrow Keys.

Note: If the oven is being used for hot food holding only, adjust the

set holding temperature. Do not press the Cook, Time, or Probe keys.

Press Cook Key to preheat.

• The green indicator light on the COOK Key will illuminate.

• Last set cooking temperature will be displayed.

➥To change the cook temperature, press the Up or Down Arrow Keys.

• The green indicator light on the Time Key and on the Probe Key alternately flash.

Press Time Key.

• The green indicator light on the TIME Key will illuminate.

• Last set time is displayed.

➥To change the cook time, press the Up or Down Arrow Keys.

• The green indicator light on the Time Key will illuminate.

• Halo Heat and Pre-Heat indicator will illuminate.

➥The oven is automatically programmed to preheat to the cook temperature.

• The oven will beep when preheated and the preheat indicator light will go out.

• Both the Ready and Start indicator lights will flash.

➥The set cook temperature will be maintained by the oven and appear in the display

while in the ready/start mode.

Load the food inside oven and close the oven door.

Note: The oven will beep 3 times every 25 seconds until the oven is loaded and the

Start Key pressed.

Press and release Start key.

• The oven will beep.

• The green indicators for power, cook, time, and start will illuminate.

• The display will alternate between showing the set cook temperature and the

remaining time.

COOK

• The oven will beep at the end of the timed cooking cycle.

• The green indicator for cook will remain illuminated.

• The display will alternate between showing the set hold temperature and the

amount of time the product has remained in the holding mode.

HOLD

• The Ready indicator light will illuminate after 2 hours in the hold mode.

Note: The ready indicator does not necessarily indicate a product-ready state. For best

results, the product must remain in the oven at the set holding temperature for

the minimum number of hours indicated in the individual cooking instructions.

• The oven will remain operating in the hold mode until the control

ON/OFF Key is pressed.

ON/OFF

START

HELPFUL HINT

To avoid prolonged

preheat times between

loads, leave the oven

in the hold mode.

Cold food for rethermalization

or reheating must never be

added to the oven

while hot food is being held.

O&C MANUAL #8311 • TH/III FAMILY

PG. 8

SECTION 3 CONTROL OPERATION SECTION 3

ON/OFF

START

Cook by Probe:

Press and release control ON/OFF key.

• The green indicator light on the ON/OFF key will illuminate.

• The oven will beep for one second.

• The oven will begin operating in the hold mode.

• The amber hold indicator will illuminate.

• The previously set hold temperature will be displayed.

Press the Hold Key.

➥To change the hold temperature, press the Up or Down Arrow Keys.

Note: If the oven is being used for hot food holding only, adjust the set holding

temperature. Do not press the Cook, Time, or Probe keys.

Press Cook Key to preheat.

• The green indicator light on the COOK Key will illuminate.

• Last set cooking temperature will be displayed.

➥To change the cook temperature, press the Up or Down Arrow Keys.

• The green indicator light on the Time Key and on the Probe Key

alternately flash.

Press Probe Key.

• The green indicator light on the PROBE Key will illuminate.

• Last set internal product temperature is displayed.

➥To change the internal product temperature, press the Up or Down Arrow Keys.

• The green indicator light on the Probe Key will illuminate.

• Halo Heat and Pre-Heat indicator will illuminate.

➥The oven is automatically programmed to preheat to the cook temperature.

• The oven will beep when preheated and the preheat indicator extinguished.

• Both the Ready and Start indicator lights will flash.

➥The set cook temperature will be maintained by the oven and appear in the display

while in the ready/start mode.

Load the food inside oven. Remove probe from its bracket, wipe the probe tip with a disposable

alcohol pad and insert probe properly into the product. Close the oven door.

Note: Oven will beep 3 times every 25 seconds until oven is loaded and Start Key pressed.

Press and release Start key.

• The oven will beep.

• The green indicators for power, cook, probe, and start will illuminate.

• The display will alternate between showing the set cook temperature and the

elapsed time.

COOK

• The oven will beep when the set probe temperature has been reached.

• The green indicator for cook will remain illuminated.

• The display will alternate between showing the set hold temperature and the

amount of time the product has remained in the holding mode.

HOLD

• Ready indicator light will illuminate after 2 hours in the hold mode.

Note: The ready indicator does not necessarily indicate a product-ready state. For best

results, the product must remain in the oven at the set holding temperature for

the minimum number of hours indicated in the individual cooking instructions.

• The oven will remain operating in the hold mode until the control ON/OFF Key is pressed.

Cold food for

rethermaliza-

tion or reheat-

ing must never

be added to the

oven

while hot food

is being held.

O&C MANUAL #8311 • TH/III FAMILY

PG. 9

SECTION 3 CONTROL OPERATION SECTION 3

Preset Menu Keys:

Alto-Shaam Cook and Hold ovens allow the operator to set up to eight cooking programs. Each cooking pro-

gram can be preset in any program mode to cook by time or internal product temperature. Cooking programs

are recalled and stored using the Preset Keys labeled "A through H." These keys, along with the key labeled "I"

share additional functions described in the "User Options" section of this manual.

Programming a Cooking Program

Select the product to be programmed and begin programming with the oven control power off.

Press and release control ON/OFF key. The oven will beep for one second and power to the unit

will be indicated by an illuminated green indicator light located in the upper left corner of the

ON/OFF key. The oven will begin operating in the hold mode. The amber hold indicator will

be illuminated and the last set hold temperature will be displayed.

Press Hold Key. To change the hold temperature, press the Up or Down

Arrow Keys.

Press Cook Key. Oven preheat indicator will illuminate and the last set cooking tempera-

ture is displayed. To change the cook temperature, press the Up or Down Arrow Keys.

To cook by time — press the Time Key. Last set cooking time is displayed.

To change the set time, press the Up or Down Arrow Keys. The green Time indicator

will illuminate.

To cook by probe — press the Probe Key. Last set internal product temperature is displayed.

To change the set temperature, press the Up or Down Arrow Keys. The green Probe indicator

will illuminate.

The oven preheat indicator will illuminate. Oven is now in the preheat mode and is

automatically programmed to preheat to the cook temperature.

Select a letter code for the product programmed by the previous steps. Press and hold the

selected Preset key until you hear a brief, four second beep. The letter key program indicator

light will illuminate and the product programmed is now stored in memory for the specific

letter key pressed. Additional programs can be stored in the remaining Preset Keys if not

previously programmed.

Note: The last Preset Key used will be the oven cooking run sequence for the next product to

be programmed. Settings can be manually changed for the next product and an alternate pre-

programmed letter key selected.

Erasing a Cooking Program

To erase a program you no longer use or revise a previously programmed Preset Key the oven must be in

either the power-up hold mode or in the preheat mode. The oven cannot be running a Preset Menu program.

When the oven is in the power-up hold mode or in the preheat mode, press and hold both the Cancel Key and

the appropriate letter Preset Key to be erased. The oven will beep in approximately four seconds and the pro-

gram's indicator light will go out to indicate the program has been erased.

ON/OFF

— or —

PRESETS

After programming a specific product into memory in a programmable preset

key, it is very important to make a written permanent record of the product and

the program letter assigned. Menu card (PE-23384) is provided for this purpose.

IMPORTANT

O&C MANUAL #8311 • TH/III FAMILY

PG. 10

SECTION 3 CONTROL OPERATION SECTION 3

Cook Using Preset Menu Keys:

Press and release control ON/OFF key.

• The green indicator light on the ON/OFF key will illuminate.

• The oven will beep for one second.

• The oven will begin operating in the hold mode.

• The amber hold indicator will illuminate.

• The previously set hold temperature will be displayed.

• Preset Keys with stored cooking programs will have green indicator illuminated.

Press Desired Preset Key (A through H)

• Halo Heat and Pre-Heat indicator will illuminate.

➥The oven is automatically programmed to preheat to the cook temperature programmed.

• The oven will beep when preheated and the preheat indicator will go out.

• Both the Ready and Start indicator lights will flash.

➥ The set cook temperature will be maintained by the oven and appear in the display

while in the ready/start mode.

Load the food inside oven. If cooking by probe, remove probe from its bracket, wipe the probe

tip with a disposable alcohol pad and insert probe properly into product. Close the oven door.

Note: The oven will beep 3 times every 25 seconds until the oven is loaded and the Start

key pressed.

Press and release Start Key.

• The oven will beep.

• The green indicators for power, cook, probe or time, and start will illuminate.

• If programmed to cook by time, the display will alternate between showing the set cook

temperature and the time remaining.

• If programmed to cook by probe, the display will alternate between showing the set cook

temperature and the elapsed time.

COOK

• The oven will beep when the set probe temperature has been reached or set time has elapsed.

• The green indicator for cook will remain illuminated.

• The display will alternate between showing the set hold temperature and the

amount of time the product has remained in the holding mode.

HOLD

• The Ready indicator light will illuminate after 2 hours in the hold mode.

Note: The ready indicator does not necessary indicate a product-ready state. For best

results, the product must remain in the oven at the set holding temperature for

the minimum number of hours indicated in the individual cooking instructions.

• The oven will remain operating in the hold mode until the control ON/OFF Key is pressed.

ON/OFF

PRESETS

START

O&C MANUAL #8311 • TH/III FAMILY

PG. 11

SECTION 4 PRINTER OPTION SECTION 4

Connecting the Printer to the Oven

1. On the printer, using your printer operation manu-

al, locate the dip switch panel on the lower left

side. Remove the panel cover and set all switches

to the up (on) position. The printer should be

shipped with all switches in the up position. Set

the second switch from the right to the down (off)

position. Set the fifth switch from the left to the

down (off) position. If printing in a language other

than English, consult Table A for appropriate

switch settings.

2. Locate the serial data port on the rear panel of the

oven, just to the left of the cooling fan inlet. Attach

the serial data cable to this port. Using the printers

operation manual, locate its serial data port and

connect the serial data cable.

3. The printer's power switch is located on the bottom

right side. Turn on the printer. Ensure that the

printer's green power and on-line indicators are

illuminated. Refer to Chapter Three of the printer

operation manual if these are not illuminated.

4. Turn on the cook and hold oven and you will see a

print out of some of the oven's basic configuration.

The electronic cook and hold oven is equipped with a serial data port for connection to

an optional serial printer in order to obtain a printed report of temperature recording data

(HACCP protocol) as well as setup and diagnostic information. The control has enough

memory to store 120-150 temperature samples as a total for all reports combined. Temperature

samples are read through the product probe. Only the tip of the product probe senses the inter-

nal product temperature, therefore, it is important the tip be placed correctly in the product for

accuracy. These reports can be printed in English, French, German or Spanish.

A 9-pin serial data port is located at the back of the oven near the cooling fan. This port can

be used to connect the serial data printer to the oven in order to take advantage of the data

reporting capabilities.

In order to ensure the proper cable and the correct printer switch settings, we recommend

purchasing your printer from Alto-Shaam:

Serial Printer & Cable Package — 125/208-240V . . . . . . . . Part # 14218

230 V . . . . . . . . . . . . . . Part # 14679

Serial Printer Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . Part # PO-33397

The printers are shipped with a users manual. It is recommended that you read the first

four chapters in order to understand how to operate and service the printer. This is necessary

in order to load the paper, change the printer ribbon, and understand it's operation. To begin

printer set up, you must first load the paper, print ribbon and connect the power supply. Place

the printer in a convenient spot near the oven.

Do NOT place the printer on top of the oven on the left side. The paper

may block the air inlet fan and cause overheating of the electronic controls.

IMPORTANT

Switch Position Comment

1-1 Up

1-2 Down

1-3 Up

1-4 Up

1-5 Down Flow Control:

X-ON / X-OFF

1-6 Up

1-7 Up

1-8 Up

2-1 Up Up: English

Down: French

German

Spanish

2-2 Up Up: English

French

Spanish

Down: German

2-3 Up

2-4 Up

Table A

O&C MANUAL #8311 • TH/III FAMILY

PG. 12

SECTION 5 USER OPTIONS SECTION 5

D. Fahrenheit or Celsius Selection

With the control in the off mode, press and

hold the Up Arrow Key along with the

Preset "D" Key for two seconds. Oven will

beep. The display will indicate the

temperature scale selected.

E. Language Choices

To change the language that the oven uses for print-

ing to a printer or PC terminal, with the control in

the off mode, press and hold the Up Arrow Key

along with the Preset "E" Key for two seconds. Each

time you press this key combination you will hear a

brief beep and the oven will print the next available

language. Continue pressing this key combination

until you have reached the language you desire.

The languages available are English, French, German

and Spanish.

F. Printing Reports

To print summaries of previous cooking programs

to a printer or PC terminal, press and hold the Up

Arrow Key, along with the Preset "F" Key for two

seconds. You will hear a brief beep and the oven

will print summaries of the last seven cooking

sequences. You cannot print report summaries if the

oven is currently in on-line printing during a cook-

ing sequence.

G. On-line Printing

On-line printing allows you to print a running

record of time, probe temperature and mode during

oven operation to a printer or PC terminal. With the

control in the off mode, toggle between on-line and

off-line status by pressing and holding the Up

Arrow Key along with the Preset "G" Key for two

seconds. One brief beep indicates that you are now

in the on-line printing state. Two beeps indicates

the off-line printing state. A status message will be

printed indicating the change to on-line printing.

"On-line 1" indicates that samples will be taken at

one minute intervals. "On-line 5" indicates a five

minute interval between samples.

H. On-line Printing Intervals

You are able to control the time interval at which

the on-line data is recorded. You can set the inter-

vals at one minute or at five minutes. Regardless of

the interval you select, the oven will always print at

ten minute intervals while in Preheat, Ready Start

mode and after 121 minutes in the Hold mode. With

the oven in the off mode, toggle between the one

minute or five minute interval choice by pressing

and holding the Up Arrow Key along with the

Preset "H" Key for two seconds. One brief beep

indicates that samples will be printed in one minute

intervals. Two beeps indicates printing in five

minute intervals.

C. Beeper Volume Selection

With the control in the off mode,

press and hold the Up Arrow Key along

with the Preset "C" Key for a minimum of four

seconds. Oven will begin to beep in varying tones.

Release both keys when the desired volume is reached.

PRESETS

ABCDEFGHI CANCEL

Beeper

Volume

°C/°F

Selection

Reports

Sample

Rate Interval

Language

Choices

Online

Preset

Lock

O&C MANUAL #8311 • TH/III FAMILY

PG. 13

SECTION 5 USER OPTIONS SECTION 5

I. Preset Keys Lock and Unlock

Preset Keys A through H can be locked in order to

prevent storing, altering or erasing a program.

To lock the preset keys, press and hold the "I" Key

for four seconds. Oven will beep. Release the “I”

key. The green indicator on the "I" key will illuminate.

Oven Preset Keys A through H are now locked.

Note: Only the oven Preset keys A through H are

affected by this lock-out in order to also allow

the oven to be used with the unprogrammed

Cook, Probe, or Hold modes.

To unlock the preset keys, press and hold the Cancel

Key along with the "I" Key for four seconds. You

will hear a brief beep. Release all keys. The green

indicator on the "I" key will extinguish. The oven

preset keys are now unlocked.

Control Panel Lock and Unlock

The control panel can be locked at any time in order

to prevent inadvertent or accidental setting changes.

To lock the control panel, press and hold the Up

Arrow Key and then press the ON/OFF Key. You will

hear a brief beep and the panel lock indicator will

illuminate. Release all keys. The oven's

control panel is now locked.

Note: The control panel is now fully locked with the

exception of the ON/OFF Key and Arrow keys.

You will be unable to turn the oven control off

at this point.

To unlock the control panel, press and hold the

Down Arrow Key and then press the ON/OFF Key.

You will hear two brief beeps and the panel lock

indicator will extinguish. Release all keys. The

panel is now unlocked and ready for normal use.

Lock

Indicator

PRESETS

ABCDEFGHI CANCEL

Preset

Lock

Cold food for rethermalization or reheating

must never be added to the oven

while hot food is being held.

O&C MANUAL #8311 • TH/III FAMILY

PG. 14

SECTION 6 SERVICE SETUP SECTION 6

Determine Correct Voltage and Unit Setup

1. Verify voltage at outlet or junction box. Make

sure that the voltage is checked between L1 and L2

and from each leg to ground. Each reading should

be within 5% of each other.

2. Verify unit setup by beginning in the

off mode.

Hold the Cook Key and the Down Arrow Key at

the same time until you hear a brief beep. If you

hear two brief beeps, the oven is not in the off mode.

The oven will display it's setup information.

Option Code Indicates oven model

programming (see Table B)

Line Voltage Indicates set voltage

Software Phase Alph, Beta or Prod

Software Version Operating software version

example: 2.10

Printer / Lock State Indicates current status

Left digit: On-line printing 1 = on

0 = off

Third digit: On-line Interval 1 = 5"

0 = 1"

Second digit: Panel Lock 1 = on

0 = off

Right digit: Preset Lock 1 = on

0 = off

Example: 1101 = on-line printing,

5 minute printing interval, panel

lock off, preset lock on

Option Model Max. Temp

Code Number °F°=°C

12 500-TH/III - 120V 325=163

13 500-TH/III - 120V 250=121

16 CH-50/III - 120V 325=163

18 500-TH/III 325=163

19 500-TH/III 250=121

22 CH-50/III 325=163

34 750-TH/III 325=163

35 750-TH/III 250=121

38 CH-75/III 325=163

58 767-SK/III 325=163

59 767-SK/III 250=121

66 1000-TH/III 325=163

67 1000-TH/III 250=121

70 CH-100/III 325=163

82 1200-TH/III UPPER 325=163

83 1200-TH/III UPPER 250=121

86 CH-120/III UPPER 325=163

98 1200-TH/III LOWER 325=163

99 1200-TH/III LOWER 250=121

102 CH-120/III LOWER 325=163

Table B

Table C

INSTALLATION REQUIREMENT!

FOR CORRECT OPERATION,

CONTROL MUST BE SET TO

MATCH THE POWER SUPPLY LINE.

Changing the Voltage Setting:

Password 3838

With the oven in the off mode, push and hold

the Up and Down Arrow Key at the same time.

After 4 seconds, the display will show a zero

along with 3 dashes. Using the Up Arrow Key,

toggle up until the display shows a 3, then

push the Start Key. Using the Down Arrow

Key, toggle down until the display shows a 8

and push the Start Key. Using the Up Arrow

Key, toggle up until the display shows a 3 and

push the Start Key. Using the Down Arrow

Key, toggle down until the display shows an 8

and push the Start Key. The current set volt-

age will display.

If the setting needs to be changed, use the Up

or Down Arrow Key to select the proper volt-

age as measured at the outlet and then push

the Start Key. The voltage is now set for the

supplied voltage.

The control defaults to 240V on all models except

the 500-TH/III, 125V model. The default for this

unit is 120V. The oven control must be set to the

line voltage provided by your electric power sup-

plier in order to perform correctly. As an added

benefit, the unit will operate economically with an

average wattage draw much lower than those stat-

ed on the rating tag as shown below in Table C.

Voltage Model Average Power

Setting Number Draw (Watts)

200 500-TH/III 1880

750-TH/III 2710

1000-TH/III 2710

1200-TH/III 5420

208 500-TH/III 2030

750-TH/III 2930

1000-TH/III 2930

1200-TH/III 5860

230 500-TH/III 2075

750-TH/III 2860

1000-TH/III 2860

1200-TH/III 5720

240 500-TH/III 2030

750-TH/III 2930

1000-TH/III 2930

1200-TH/III 5860

O&C MANUAL #8311 • TH/III FAMILY

PG. 15

SECTION 6 SERVICE SECTION 6

Unit Setup

Once you've verified the unit option code using the

directions listed on the previous page, and you've

found that the option code does not correspond

with the actual model number stated in Table B,

you will need to change the unit option code.

Initializing the Control

Password 1818

If the control appears to be operating correctly but

there is no 3.5 - 5 VDC at the solid state relay across

4- and 3+, attempt to reinitialize the control before

replacing it. Perform this procedure the same as

you would to set the voltage or option code.

Instead enter 1818 and then hit start. The display

will go blank. Proceed to program the correct volt-

age and option code and test for power. If there is

still no power to the solid-state relay, check to verify

the wiring is correct. If everything checks out, the

control may be defective.

SERVICING INTERNAL ELECTRICAL COMPONENTS

This section is provided for the assistance of

qualified technicians only and is not intended

for use by untrained or unauthorized service

personnel.

If your Alto-Shaam® unit is not operating proper-

ly, check the following before calling your

Authorized Alto-Shaam® Service Agent:

☛ Check the power flow to the unit.

Plug in outlet? Fuse OK?

Circuit breaker switch at back of unit turned on?

Do not attempt to repair or service the

Cook and Hold unit beyond this point.

Contact Alto-Shaam® for the nearest

authorized service agent. Repairs made

by any other service agents without prior

authorization by Alto-Shaam® will void the

warranty on the unit.

Changing the Unit Option Code:

Password 2828

With the oven in the off mode, push and hold

the Up and Down Arrow Key at the same time.

After 4 seconds, the display will show a zero

along with 3 dashes. Using the Up Arrow Key,

toggle up until the display shows a 2, then

push the Start Key. Using the Down Arrow

Key, toggle down until the display shows a 8

and push the Start Key. Using the Up Arrow

Key, toggle up until the display shows a 2 and

push the Start Key. Using the Down Arrow

Key, toggle down until the display shows an 8

and push the Start Key. The current config-

ured option code will display.

Use the Up or Down Arrow Keys to select the

proper option code from Table B and then

push the Start Key.

Option Model Max. Temp

Code Number °F°=°C

12 500-TH/III - 120V 325=163

13 500-TH/III - 120V 250=121

16 CH-50/III - 120V 325=163

18 500-TH/III 325=163

19 500-TH/III 250=121

22 CH-50/III 325=163

34 750-TH/III 325=163

35 750-TH/III 250=121

38 CH-75/III 325=163

58 767-SK/III 325=163

59 767-SK/III 250=121

66 1000-TH/III 325=163

67 1000-TH/III 250=121

70 CH-100/III 325=163

82 1200-TH/III UPPER 325=163

83 1200-TH/III UPPER 250=121

86 CH-120/III UPPER 325=163

98 1200-TH/III LOWER 325=163

99 1200-TH/III LOWER 250=121

102 CH-120/III LOWER 325=163

Table B

ILLUSTRATION B.

FRONT VIEW

BACK VIEW

ILLUSTRATION C.

R.T.V. SEAL

SCREW LOCATIONS

CIRCUIT BREAKER

SWITCH

ILLUSTRATION A.

SIDE VIEW

SCREW LOCATIONS

I.D. TAG

PROVIDED SOFTWARE UPGRADE

I.D. TAG (TO BE PLACED HERE)

BONNET POSITION

IN TIP CLIPS

O&C MANUAL #8311 • TH/III FAMILY

PG. 16

SECTION 6 SERVICE SECTION 6

A. No power. Display will not light.

1. Verify that power is available at the outlet or junction box.

2. Verify that the circuit breaker switch on the back of the

unit is turned on.

3. Verify that the power cord is not open. Check continuity

with a VOM meter.

4. If the above steps check out okay, you'll need to

remove the top bonnet assembly. Disconnect electrical

power to the unit by turning off the circuit in the main

supply panel. Remove the screws described in

Illustrations A. through C. After screws have been

removed, gently lift bonnet, paying close attention not to

pull on wiring connections. Turn bonnet onto its left side

(when viewed from the front) as shown in Illustration B.

Slide the edge of the bonnet under the 2 security clips.

Reconnect electrical power to the unit.

a) Test for power at the load side of the circuit breaker.

See Figure 1. If ok, proceed to step b. If there is no

power, replace the defective circuit breaker.

b) Test for power at the load side

of the two filters. See Figure 2.

If ok, proceed to step c. If there

is no power, replace the defective

filter.

TROUBLE SHOOTING INTERNAL ELECTRICAL COMPONENTS

Load Side

Figure 1

Figure 2

This section is provided for

the assistance of qualified

technicians only and is not

intended for use by

untrained or unauthorized

service personnel.

Do not replace any elec-

trical components with-

out first disconnecting

electrical power to the

unit by

turning off the circuit breaker in the

main supply panel. A warning sign

should be posted on the panel indicating

the oven is being serviced and that the

O&C MANUAL #8311 • TH/III FAMILY

PG. 17

SECTION 6 SERVICE SECTION 6

4. c) Check for power at the secondary side of the

transformer. The voltage reading should be

approximately 20 VAC at points 67 and 72

indicated on Figure 3. If the correct voltage

is not present, the transformer is defective.

d) Disconnect electrical power to the unit by turn-

ing off the circuit in the main supply panel.

Check the two inline fuse assemblies. Using a

VOM meter, remove one end of the fuse assembly

and check for continuity. See Figure 3. If the fuse

shows that it is open, then replace the bad fuse

assembly. If all the above tests (1-4) check out

okay, a defective control is the probable cause.

B. Display is lit and unit calls for heat, but unit

is not heating; or Error Code E30

1. Check to verify that the high limit switch located at

the rear of the bonnet, next to the cord inlet has not

been tripped. If it has been tripped, reset by either

pressing in the red button or by flipping up the green

tab. After resetting, the cause of the high limit trip

must be corrected. If the high limit switch will not

reset, the high limit switch is defective and must be

replaced. This is a safety device and must not

be jumped out or removed from the circuit.

2. Disconnect electrical power to the unit by turning

off the circuit in the main supply panel. Locate the

cable connections in either the front left corner or the

right rear corner of the unit and test each cable to

ground, using a VOM meter. Any resistance reading

to ground will indicate a shorted or open cable to

ground and the cable will need to be replaced. If this

checks out okay, proceed to step 3.

3. Reconnect electrical power to the unit. Check the

solid state relay mounted on the metal heat sink.

With the unit circuit breaker switch on

and the

control in the off mode

, using a VOM meter set to the

AC volt scale, check across the closure terminals #1

and #2. See Figure 4. There should be line voltage

(200-240 VAC) present. With the VOM meter set on

the DC volt scale, check across the trigger terminals #3

and #4, taking care to observe polarity. There should

be less than 1 volt DC current present. If not, the

solid state relay is defective.

4. On the same solid state relay, with the unit in the

preheat mode and using a VOM meter set to the DC

volt scale, check across the trigger terminal #3 and #4,

taking care to observe polarity. See Figure 5. There

should be a reading of between 3.5 and 5 volt DC

present. With the VOM meter on the AC volt scale

and checking across the closure terminal #1 and #2,

there should be less that 1 volt AC current present.

If not, the solid state relay is defective.

TROUBLE SHOOTING INTERNAL ELECTRICAL COMPONENTS CONTINUED

Figure 3

Figure 4

Secondary

Side

Line Voltage: 200-240 VAC

Figure 5

3.5 to 5 VDC

O&C MANUAL #8311 • TH/III FAMILY

PG. 18

SECTION 6 SERVICE SECTION 6

DISPLAY ERROR CODES

1. "E10"

Oven Fault under

temperature.

2. "E11"

Oven Fault over

temperature.

3. "E21"

Food probe fault over

temperature.

4. "E30"

Slow heating rate.

5. "E31"

Slow cooling rate.

POSSIBLE CAUSE

A. Frozen food product placed in

oven.

B. Air temperature sensor defective.

C. Voltage option incorrect.

A. Heating cable shorted to ground.

B. Air temperature sensor defective.

C. Failed solid state relay.

A. Food probe defective.

A. Oven door open.

B. Door gasket defective or

door out of adjustment.

C. Oven preheat was skipped.

D. Line voltage incorrect, voltage

option on control not pro-

grammed properly.

E. Defective air sensor or product

probe.

F. Defective solid state relay.

G. Bad wire connections or

open heating cable.

A. Failed solid state relay.

B. Defective air temperature sensor.

C. Shorted or grounded

heating cable.

REMEDY

Thaw food prior to placing in oven.

Test air sensor by placing sensor in ice

water bath and using an ohmmeter set on

the ohm scale. The reading should be

approximately 100 ohms resistance. If the

sensor tests out and there are bullet connec-

tors on the leads, cut off bullet connectors,

strip back the insulation 1/2", slide a piece

of heat shrink tubing over the wire, twist the

wires together and solder. Slide the heat

shrink tubing over the soldered connection

and heat in order to shrink material.

Change the voltage setting, referring to the

instructions in Section 6, Service Setup.

Replace heating cable.

Test air sensor using remedy instructions

above for 1B.

Replace solid state relay.

Test food probe by placing in ice water bath

and using an ohmmeter set on the ohm

scale. The reading should be approximate-

ly 100 ohms resistance. If the product

probe tests out and there are bullet connec-

tors on the leads, cut off bullet connectors,

strip back the insulation 1/2", slide a piece

of heat shrink tubing over the wire, twist the

wires together and solder. Slide the heat

shrink tubing over the soldered connection

and heat in order to shrink material.

Close door.

Replace door gasket, adjust door placement,

or replace door.

Return to power-up preheat mode.

Change the voltage setting, referring to the

instructions in Section 6, Service Setup.

Test air sensor using remedy instructions

above for 1B. Test product probe using

remedy instructions above for 3A.

Replace solid state relay.

Check wire connections.

Replace heating cable.

Replace solid state relay.

Test air sensor using remedy instructions

above for 1B.

Replace heating cable.

TROUBLE SHOOTING

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Alto-Shaam 750-TH/III Operation And Care Manual

Brand: Alto-Shaam

Model: 750-TH/III

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Type: Operation And Care Manual

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Alto-Shaam 750-TH/III Operation And Care Manual

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