Alto-Shaam AS-250 User Manual

#812 • 12/2005

PRINTED IN U. S .A .

INSTALLATION

OPERATION

AND

MAINTENANCE

MANUAL

Oven

Low Temperature

Cooking and Holding

Electronic

MODEL:

AS-250

A

B

C

D

E

F

AS-250AS-250

W164 N9221 Water Street • P.O. Box 450 • Menomonee Falls, Wisconsin 53052-0450 USA

PHONE: [phone] • 800.558-8744 USA/CANADA Fax: [phone] • 800.329.8744 USA/CANADA

WEB SITE: www.alto-shaam.com

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • INDEX

Installation

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

Heating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 1

Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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

Outside Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Options & Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 2

Control

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Audible Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operating Features & Functions . . . . . . . . . . . . . . . . . . . 4

Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

General Holding Guidelines . . . . . . . . . . . . . . . . . . . . . . 9

Care and Cleaning

Cleaning and Preventive Maintenance . . . . . . . . . . . . . . 10

Clean the Oven Daily . . . . . . . . . . . . . . . . . . . . . . . . . 11

Clean the Door Vents . . . . . . . . . . . . . . . . . . . . . . . . . 11

Do Not Use Oven if Controls are not Properly Functioning . . 11

Check Overall Condition . . . . . . . . . . . . . . . . . . . . . . . 11

Sanitation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 12

Service

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Troubleshooting Internal Electrical Components . . . . . . . 14

Service View Parts List . . . . . . . . . . . . . . . . . . . . . . . . 15

Service View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Transportation Damage and Claims

Warranty

INDEX

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 1

The Alto-Shaam Electronic Cooking
and Holding Oven has been thoroughly
tested, checked for calibration and
inspected to insure only the highest quality
oven is provided. When you receive your
oven, check for any possible shipping
damage and report it at once to the
delivering carrier. See Transportation
Damage and Claims section located in this
manual.

The oven may be delivered in one or
more packages. Check to insure that all the following
items have been received with each unit:

Drip Pan (1) Guide to Low Temperature Cooking(1)
Wire Shelf (1) Oven Side Racks (2) Base Support Bars (1)

PLUS: Any options or accessories which may have been ordered

with the equipment.

Save all the information and instructions packed
inside the unit. Complete and return the warranty card
to the factory as soon as possible to insure prompt
service in the event of a warranty parts/labor claim.

Alto-Shaam cook and hold ovens are designed for the
purpose of maintaining hot food at a temperature for
safe consumption. The unit must be installed in a
location that will permit the equipment to function for its
intended purpose and allow adequate access for proper
cleaning and maintenance.

Installation minimum clearance recommendations are
3-inches (76mm) at the back, 2-inches (51mm) at the top,
and 1-inch (25mm) at both sides

The unit must not be installed in any area where it
will be affected by steam, grease, dripping water, high
temperatures, or any other severely adverse conditions.

The oven is equipped with a special, high-heat­density, heating cable. Through the Halo Heat concept,
the heating cable is mounted against the walls of the
cooking cavity to provide an evenly applied,
thermostatically controlled, heat input. The design and
operational characteristics of the unit eliminate the need
for a moisture pan and/or heat circulating fan. Because
of the even heat application, the quality of a food
product is maintained for long periods of time. The
actual time depends on the type and quantity of product.

The computer control maintains an exceptionally
close temperature tolerance and automatic control of the
cooking cycle by either internal product temperature or
timed cooking. Holding temperatures are maintained
with reduced oven power consumption in the automatic,
HOLD mode.

Before using the oven, become familiar with the
operation of the control. Read the following "Operation"
section of this manual and operate the various function
modes of the computer control. For reference during
actual operation, the basic operational procedures are
printed on the control panel.

Clean both the interior and exterior of the oven
with a mild soap solution and a damp cloth rinse
before operating.

1. Ensure that the voltage stamped on the nameplate
matches the available power source.

SAMPLE

2. This unit must be grounded in accordance with
requirements of the National Electrical Code or
applicable local codes.

125 V.A.C. — 60 Hz, 1Ph • 1300 Watts • 10.4 Amps
230 V.A.C. — 50/60 Hz, 1 Ph • 1200 Watts (max.)

• 5.5 Amps (max.)

3. If necessary a proper outlet configuration, or
permanent wiring for this oven must be installed by
a licensed electrician in accordance with applicable,
local electrical codes.

4. Plug the unit into a properly grounded receptacle

only, positioning the appliance so that the
power supply cord is easily accessible in case of
an emergency.

For 230V units:

To prevent an electrical shock hazard
between the appliance and other appliances or metal
parts in close vicinity, an equalization-bonding stud is
provided. An equalization bonding lead must be
connected to this stud and the other appliances / metal
parts to provide sufficient protection against
potential difference. The terminal is marked with the
following symbol.

HEATING CHARACTERISTICS

®

®

ELECTRICAL INSTALLATION

UNPACKING and SET-UP

START UP

AT NO TIME SHOULD THE INTERIOR
OR EXTERIOR BE STEAM CLEANED,
HOSED DOWN, OR FLOODED WITH
WATER OR LIQUID SOLUTION OF
ANY KIND.

DO NOT USE WATER JET TO CLEAN.

SEVERE DAMAGE OR ELECTRICAL
HAZARD COULD RESULT.

WARRANTY BECOMES VOID IF
APPLIANCE IS FLOODED.

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 2

33-9/16" (853mm)

5-1/2" (140mm)

17-1/4" (438mm)

16-3/4" (425mm)

40-1/8" (1019mm)

Electrical
Connection
7" (178mm)
from top

A

B

C

D

E

F

INSTALLATION

OPTIONS AND ACCESSORIES

OUTSIDE DIMENSIONS

Shelf, Stainless Steel Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SH-2786

Stacking Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4928

Carving Holder, Prime Rib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HL-2635

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 3

A

B

C

D

E

F

AS-250AS-250

START BUTTON

After all required

settings have been entered,

START begins the cooking-

holding sequence.

PROBE BUTTON

Used for setting probe cut-off

temperature or recalling and

checking previously set probe

cut-off temperature.

POWER ON BUTTON

Used to start control set-up

sequence from the

reset mode.

HOLD BUTTON

Used for setting HOLD

temperature or recalling and

checking previously set

holding temperature.

CONTROL PANEL • AS-250

CONTROL OPERATION

PRESETS PROGRAM KEYS

Provides memory storage
and operation of operator

set cooking programs for

specific products.

PROGRAM MENU
IDENTIFICATION

CARD SLOT

LOCK INDICATOR

When illuminated, this symbol

indicates settings used in the

cooking sequence are locked

and cannot be changed.

PRE-HEAT INDICATOR

Illuminates until the oven is

preheated.

COOK INDICATOR

Illuminates when oven

is cooking.

READY INDICATOR

Illuminates when the oven has

finished preheating.

PRE-SET PROGRAM

CANCEL BUTTON

Used to erase a program from

memory storage

PRESET LOCK

Enables locking abilities.

DIGITAL DISPLAY

Indicates appropriate time or

temperature and displays
control in °F or °C mode.

COOK BUTTON

Used for setting COOK

temperature or recalling and

checking previously set

cooking temperature.

TIME BUTTON

Used for setting cooking time

or recalling and checking

previously set time.

(3 digits - Minimum)

UP/DOWN ARROWS
Used to increase or decrease
set time, including cooking,

holding and probe

temperature settings.

MINUTES INDICATOR

Illuminates when minutes are

displayed on the
Digital Display.

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 4

CONTROL OPERATION

OVEN BEEPING is used to indicate a YES or NO response to operator input.
Beeps also indicate mode C

HANGES 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 control in the O

FF mode, press and hold the DOWN ARROW Key. After 4 seconds,

the display will exhibit one of the 4 volume levels (0 being O

FF or the lowest, and 3 being the highest). After each change, the

button must be released and the display must clear before the procedure can be repeated to select a different volume level.

AUDIBLE SIGNALS

Turn the Oven Control Panel Off:

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

N/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 A

RROW 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

pressing the A

RROW 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.

SPECIAL ATTENTION:

When preheating, the temperature of the product probe
reaches the air temperature inside the oven. Always
allow the product probe temperature to decrease to the
internal temperature of the raw product by inserting the
probe and waiting one full minute before pressing the
start button. A false reading of the internal temperature
of the product may cause the oven to default to a
holding temperature.

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 position 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
temperature 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 temperature. 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 C

OOK, TIME, PROBE, and HOLD keys include an amber

indicator light to identify the information being displayed.

Amber

OPERATING FEATURES & FUNCTIONS

Green

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 5

CONTROL OPERATION

Cook by Time: IS THE MAIN ELECTRICAL POWER SWITCH ON?

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.

COOK

• 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.

HOLD

• 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.

• 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.

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.

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 6

CONTROL OPERATION

Cook by Probe: IS THE MAIN ELECTRICAL POWER SWITCH ON?

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.

COOK

• The oven will beep.

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

• The display will alternate between showing the probe temperature and the elapsed time.

HOLD

• 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.

• 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 O

N/OFF Key is pressed.

Cold food for

rethermalization

or reheating

must never be

added to the

oven while
hot food is
being held.

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 7

CONTROL OPERATION

Preset Menu Keys:

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

Prior to this procedure, make sure the oven is “OFF”. Select the food product to be
programmed. 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
temperature 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, 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 program's indicator light will go out to indicate the program has been erased.

— or —

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

PRESETS

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 8

CONTROL OPERATION

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 F)

• 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.

COOK

• 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.

HOLD

• 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.

• 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.

PRESETS

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 9

GENERAL HOLDING GUIDELINES

Chefs, cooks and other specialized food service
personnel employ varied methods of cooking. Proper
holding temperatures for a specific food product must
be based on the moisture content of the product,
product density, volume, and proper serving
temperatures. Safe holding temperatures must also be
correlated with palatability in determining the length
of holding time for a specific product.

Halo Heat maintains the maximum amount of product
moisture content without the addition of water, water
vapor, or steam. Maintaining maximum natural
product moisture preserves the natural flavor of the
product and provides a more genuine taste. In
addition to product moisture retention, the gentle
properties of Halo Heat maintain a consistent
temperature throughout the cabinet without the
necessity of a heat distribution fan, thereby
preventing further moisture loss due to evaporation
or dehydration.

When product is removed from a high temperature
cooking environment for immediate transfer into
equipment with the lower temperature required for
hot food holding, condensation can form on the
outside of the product and on the inside of plastic
containers used in self-service applications. Allowing
the product to release the initial steam and heat
produced by high temperature cooking can alleviate
this condition. To preserve the safety and quality of
freshly cooked foods, however, a maximum of 1 to 2
minutes must be the only time period allowed for the
initial heat to be released from the product.

Most Halo Heat Holding Equipment is provided with
a thermostat control between 60° and 200°F
(16° to 93°C). If the unit is equipped with vents, close
the vents for moist holding and open the vents for
crisp holding.

If the unit is equipped with a thermostat indicating a
range of between 1 and 10, use a metal-stemmed
indicating thermometer to measure the internal
temperature of the product(s) being held. Adjust the
thermostat setting to achieve the best overall setting
based on internal product temperature.

HOLDING TEMPERATURE RANGE

MEAT FAHRENHEIT CELSIUS

BEEF ROAST — Rare 140°F60°C

BEEF ROAST — Med/Well Done 160°F71°C

BEEF BRISKET 160°— 175°F71°— 79° C

CORN BEEF 160°— 175°F71°— 79° C

PASTRAMI 160°— 175°F71°— 79° C

PRIME RIB — Rare 140°F60°C

STEAKS — Broiled/Fried 140°— 160°F60°— 71° C

RIBS — Beef or Pork 160°F71°C

VEAL 160°— 175°F71°— 79° C

HAM 160°— 175°F71°— 79° C

PORK 160°— 175°F71°— 79°C

LAMB 160°— 175°F71°— 79° C

POULTRY

CHICKEN — Fried/Baked 160°— 175°F71°— 79° C

DUCK 160°— 175°F71°— 79° C

TURKEY 160°— 175°F71°— 79° C

GENERAL 160°— 175°F71°— 79° C

FISH/SEAFOOD

FISH — Baked/Fried 160°— 175°F71°— 79° C

LOBSTER 160°— 175°F71°— 79° C

SHRIMP — Fried 160°— 175°F71°— 79°C

BAKED GOODS

BREADS/ROLLS 120°— 140°F49°— 60°C

MISCELLANEOUS

CASSEROLES 160°— 175°F71°— 79° C

DOUGH — Proofing 80°— 100°F27°— 38° C

EGGS —Fried 150°— 160°F66°— 71°C

FROZEN ENTREES 160°— 175°F71°— 79° C

HORS D'OEUVRES 160°— 180°F71°— 82°C

PASTA 160°— 180°F71°— 82° C

PIZZA 160°— 180°F71°— 82° C

POTATOES 180°F82°C

PLATED MEALS 180°F82°C

SAUCES 140°— 200°F60°— 93° C

SOUP 140°— 200° F60°— 93°C

VEGETABLES 160°— 175°F71°— 79°C

The holding temperatures listed are suggested guidelines only.

OPERATION

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 10

CARE AND CLEANING

PROTECTING STAINLESS STEEL SURFACES

It is important to guard against

corrosion in the care of stainless

steel surfaces. Harsh,

corrosive, or inappropriate

chemicals can completely

destroy the protective surface

layer of stainless steel. Abrasive pads, steel wool,

or metal implements will abrade surfaces causing

damage to this protective coating and will

eventually result in areas of corrosion. Even water,

particularly hard water that contains high to

moderate concentrations of chloride, will cause

oxidation and pitting that result in rust and

corrosion. In addition, many acidic foods spilled

and left to remain on metal surfaces are

contributing factors that will corrode surfaces.

Proper cleaning agents, materials, and methods

are vital to maintaining the appearance and life of

this appliance. Spilled foods should be removed

and the area wiped as soon as possible but at the

very least, a minimum of once a day. Always

thoroughly rinse surfaces after using a cleaning

agent and wipe standing water as quickly as

possible after rinsing.

CLEANING AGENTS

Use non-abrasive cleaning products designed for use

on stainless steel surfaces. Cleaning agents must be

chloride-free compounds and must not contain

quaternary salts. Never use hydrochloric acid

(muriatic acid) on stainless steel surfaces. Always

use the proper cleaning agent at the manufacturer's

recommended strength. Contact your local cleaning

supplier for product recommendations.

CLEANING MATERIALS

The cleaning function can

usually be accomplished

with the proper cleaning

agent and a soft, clean

cloth. When more aggressive

methods must be employed, use a

non-abrasive scouring pad on

difficult areas and make certain to

scrub with the visible grain of surface metal to

avoid surface scratches. Never use wire brushes,

metal scouring pads, or scrapers to remove food

residue.

CLEANING AND PREVENTIVE MAINTENANCE

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 11

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.

CLEAN DAILY

1. Disconnect unit from power source, and let cool.

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

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

4. Clean the interior metal surfaces of the cabinet
with a damp clean cloth or sponge and any good
commercial detergent.

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.

5. Spray heavily soiled areas with a water soluble
degreaser and let stand for 10 minutes, then
remove soil with a plastic scouring pad.

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 a
clean 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 DOOR VENTS

Door vents need to be inspected and cleaned
as required.

DO NOT USE OVEN IF CONTROLS ARE NOT
PROPERLY FUNCTIONING

Refer to the Trouble Shooting Guide located in this
manual or call an authorized service technician.

CHECK OVERALL CONDITION OF OVEN ONCE
A MONTH

Check the oven once a month for physical damage
and loose screws. Correct any problems before they
begin to interfere with the operation of the oven.

CARE AND CLEANING

AT NO TIME SHOULD THE INTERIOR
OR EXTERIOR BE STEAM CLEANED,
HOSED DOWN, OR FLOODED WITH
WATER OR LIQUID SOLUTION OF
ANY KIND.

DO NOT USE WATER JET TO CLEAN.

SEVERE DAMAGE OR ELECTRICAL
HAZARD COULD RESULT.

WARRANTY BECOMES VOID IF
APPLIANCE IS FLOODED.

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 12

SANITATION GUIDELINES

Food flavor and aroma are usually so closely related
that it is difficult, if not impossible, to separate them.
There is also an important, inseparable relationship
between cleanliness and food flavor. Cleanliness, top
operating efficiency, and appearance of equipment
contribute considerably to savory, appetizing foods.
Good equipment that is kept clean, works better and
lasts longer.

Most food imparts its own particular aroma and
many foods also absorb existing odors.
Unfortunately, during this absorption, there is no
distinction between GOOD and BAD odors. The
majority of objectionable flavors and odors troubling
food service operations are caused by bacteria
growth. Sourness, rancidity, mustiness, stale or
other OFF flavors are usually the result of germ
activity.

The easiest way to insure full, natural food flavor is
through comprehensive cleanliness. This means
good control of both visible soil (dirt) and invisible
soil (germs). A thorough approach to sanitation will
provide essential cleanliness. It will assure an
attractive appearance of equipment, along with
maximum efficiency and utility. More importantly, a
good sanitation program provides one of the key
elements in the prevention of food-borne illnesses.

A controlled holding environment for prepared foods
is just one of the important factors involved in the
prevention of food-borne illnesses. Temperature
monitoring and control during receiving, storage,
preparation, and the service of foods are of
equal importance.

The most accurate method of measuring safe
temperatures of both hot and cold foods is by
internal product temperature. A quality
thermometer is an effective tool for this purpose, and
should be routinely used on all products that require
holding at a specific temperature.

A comprehensive sanitation program should focus on
the training of staff in basic sanitation procedures.
This includes personal hygiene, proper handling of
raw foods, cooking to a safe internal product
temperature, and the routine monitoring of internal
temperatures from receiving through service.

Most food-borne illnesses can be prevented through
proper temperature control and a comprehensive
program of sanitation. Both these factors are
important to build quality service as the foundation
of customer satisfaction. Safe food handling
practices to prevent food-borne illness is of critical
importance to the health and safety of your
customers. HACCP, an acronym for Hazard Analysis
(at) Critical Control Points, is a quality control
program of operating procedures to assure food
integrity, quality, and safety. Taking steps necessary
to augment food safety practices are both cost
effective and relatively simple. While HACCP
guidelines go far beyond the scope of this manual,
additional information is available by contacting

Center for Food Safety and Applied Nutrition

Food and Drug Administration

1-888-SAFEFOOD

INTERNAL FOOD PRODUCT TEMPERATURES

HOT FOODS

DANGER ZONE 40° TO 140° F(4° TO 60°C)

CRITICAL ZONE 70° TO 120° F (21° TO 49° C)

SAFE ZONE 140° TO 165° F (60° TO 74° C)

COLD FOODS

DANGER ZONE ABOVE 40°F (ABOVE 4° C)

SAFE ZONE 36°F TO 40°F(2°C TO 4°C)

FROZEN FOODS

DANGER ZONE ABOVE 32°F (ABOVE 0° C)

CRITICAL ZONE 0° TO 32° F (-18° TO 0° C)

SAFE ZONE 0°F OR BELOW (-18° C OR BELOW)

CARE AND CLEANING

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 13

SERVICE

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 electrical components without first disconnecting electrical
power to the unit by switching off the electrical power at the rear of the oven.

A warning sign should be posted on the panel indicating the oven is being

serviced and that the power must remain off.

TROUBLE SHOOTING

Error Possible Cause
Code Description/Results Service Required

E-10 Air Sensor Fault (shorted)

Inoperative Oven

Air sensor defective? See following page for air sensor test.

E-11 Air Sensor Fault (open)

Inoperative Oven

E-20 Product Probe Fault (shorted)

Oven will cook in time only

Probe defective? See following page for probe sensor test.

E-21 Product Probe Fault (open)

Oven will cook in time only

E-30 Under temperature Oven door closed? Door gasket need replacement? Preheat skipped?

Oven will shut down Oven overloaded or has frozen product? Defective air sensor or probe?

Defective solid state relay? Bad wire connections or open heating
cable? Is the high limit switch tripped? If none of the above,
call service.

E-31 Over temperature Shorted cable? Defective solid state relay? Defective air sensor?

Oven will shut down If none of the above, call service.

E-70 Configuration connector error Check control connections for loose wires. If none, control

Inoperative Oven must be replaced.

E-78 Voltage low If 125 VAC unit, incoming voltage is below 90 VAC. Correct.

Inoperative Oven If 208-240 VAC unit, incoming voltage is below 190 VAC. Correct.

E-79 Voltage high If 125 VAC unit, incoming voltage is over 130 VAC. Correct.

Inoperative Oven If 208-240 VAC unit, incoming voltage is over 250 VAC. Correct.

E-80 EEPROM - Function data error Replace control.

Inoperative Oven

E-82 EEPROM - Calibration data error Replace control.

Inoperative Oven

E-84 EEPROM - Unit ID error Replace control.

Inoperative Oven

E-86 EEPROM - Preset data error Replace control.

Inoperative Oven

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 14

SERVICE

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 none of the above steps help, call a qualified service technician or refer to the Service Manual for
this particular oven.

B. Display is lit and unit calls for heat, but unit is not heating;

Error Code E30

Check to verify that the high limit switch located at the rear of the unit top has not been
tripped. If it has been tripped, reset by pressing in the hit limit reset button at the rear
of the oven.

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.

C. To test air sensor:

Test air sensor by placing sensor in ice water bath and using an ohmmeter set on the ohm scale. The
reading should be 100 ohms resistance. If it is more than 2 ohms higher or lower, sensor needs to
be replaced.

D. To test probe sensor:

Test food probe by placing in ice water bath and using an ohmmeter set on the ohm scale. The reading
should be 100 ohms resistance.

TROUBLE SHOOTING 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

properly, check the following before calling your Authorized Alto-Shaam

®

Service Agent:

☛ Check the power flow to the unit. Plug in outlet? 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.

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 15

1. TOP 1 1820

2. TOP MOUNTING SCREWS 5 SC-2425

3. TUBE ASSB. MTG. SCREWS 3 SC-2425

6. CONTROL ASSEMBLY
125V

CELSIUS 1 5003883

125V

FAHRENHEIT 1 5003881

230V, E-INT

CELSIUS 1 5003884

230V, E-INT

FAHRENHEIT 1 5003882

230V, G-INT

CELSIUS 1 5003880

7. CASING ASSEMBLY 1 4812

8. INSULATION BOTTOM 1 1827

9. INSULATION CORNER 2 1837

10. INSULATION 1 IN-2381
.5 IN-22364

11. CABLE CONNECTION HARDWARE

12. HEATING CABLE:

Length 70' (21336mm) 1 CB-3045

13. POWER SWITCH 1 SW-3563

14. FAN (125V) 1 FA-3599

FAN (230V) 1 FA-3568
FAN GUARD 1 GD-2396
FAN GUARD MTG. SCREWS 4 SC-2661

15. FAN BI-METAL THERMOSTAT 1 TT-3562

MOUNTING SCREWS 2 SC-2459

THERMOSTAT, MANUAL RESET 2 TT-3859

16. CORD SET, 125V, 9' 1 CD-3232

CORD SET, 230V, 9' 1 CD-3922

17. SENSOR PLATE 1 11324

18. SENSOR PLATE MOUNTING SCREWS 4 SC-2459

19. OVEN SENSOR (

NOT SHOWN) 1 SN-3560

MOUNTING SCREWS 2 SC-2472

SENSOR SUPPORT BRACKET 1 BK-2758

MOUNTING SCREWS 1 SC-2064

SENSOR GUARD 1 GD-2751

20. MEAT PROBE ASSEMBLY 1 5081

MOUNTING SCREWS 2 SC-2254

PROBE CABLE HOLDER 1 HL-2771

21. DOOR, RIGHT-HAND 1 5542

22. HINGE SET (1 Pair of 2 Hinges) 1 HG-2014
HINGE TO DOOR MTG. SCREWS 6 SC-2072
HINGE TO UNIT MTG. SCREWS 6 SC-2073

23. DOOR HANDLE 1 HD-2566
DOOR HANDLE MTG. SCREWS 4 SC-2073
DOOR CATCH MTG. SCREWS 2 SC-2162

24. DOOR GASKET:

Length 6.1' (1859mm) 1 GS-2398

25. SIDE RACK 2 SR-2781

26. SHELF 1 SH-2786

27. PAN 1 PN-2122

28. LEGS 2 11547
LEG MOUNTING SCREWS 4 SC-2464

29. COOKING GUIDELINES OVERLAY
ENGLISH 1 PE-26540
GERMAN 1 PE-26783

30. RELAY (

NOT SHOWN) 1 RL-33829

31. T-BLOCK (

NOT SHOWN) 1 BK-33546

32. POWER SUPPLY BOARD (

NOT SHOWN) 1 BA-33554

33. CIRCUIT BOARD ASSB. (

NOT SHOWN) BA-33900

34. BEEPER (

NOT SHOWN) 1 BP-3567

35. CONTROL PANEL OVERLAY 1 PE-26344

UNIT ALTO-SHAAM

PART DESCRIPTION QTY PART NO.

UNIT ALTO-SHAAM

PART DESCRIPTION QTY PART NO.

AS-250

11/05

Cable Heating Service Kit . . . . . . . . . . . . . . . . . 4878

Includes:

CB-3045 Cable Heating Element . . . . . . . . . 72 feet

CR-3226 Ring Connector . . . . . . . . . . . . . . . . . . . . 4

IN-3488 Insulation Corner . . . . . . . . . . . . . . 1 foot

BU-3105 Shoulder Bushing . . . . . . . . . . . . . . . . . . 4

BU-3106 Cup Bushing . . . . . . . . . . . . . . . . . . . . . . 4

SL-3063 Insulating Sleeve. . . . . . . . . . . . . . . . . . . 4

TA-3540 Electrical Tape . . . . . . . . . . . . . . . . . 1 roll

ST-2439 Stud, 10/32 . . . . . . . . . . . . . . . . . . . . . . . 4

NU-2215 Hex Nut . . . . . . . . . . . . . . . . . . . . . . . . . . 8

SERVICE VIEW PARTS LIST - See following page.

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 16

ABC

D

E

F

AS-250AS-250

1820

SC-2425

SC-2425

5003883 - 125V CELSIUS

5003881 - 125V FAHRENHEIT

5003884 - 230V, E-INT CELSIUS

5003882 - 230V, E-INT FAHRENHEIT

5003880 - 230V, G-INT CELSIUS

5542

1827

HG-2014

PE-26540 -

ENGLISH

PE-26783 - GERMAN

SN-3560

11547

CD-3232 (125V)

CD-3922 (220V)

SC-2459

SW-3563

FA-3599 (125V)

FA-3568 (220V)

11324

CB-3045

4812

IN-2381 (1)

IN-22364 (.5)

5081

TT-3562

Cable Connection

Hardware

1837

SR-2781

SH-2786

PN-2122

HD-2566

GS-2398

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 17

#812 • INSTALLATION/OPERATION/SERVICE MANUAL • 18