Alto Shaam 20.20EC, 20-20 Installation Manual
20•20EC • 2001
PRINTED IN U.S .A .
W164 N9221 Water Street ●P.O. Box 450 ●Menomonee Falls, Wisconsin 53052-0450 ●U.S.A.
PHONE: (262)251-3800 (800)558-8744 U. S. A./CANADA●FAX : (262)251-7067 (800)329-8744 U. S. A. (262)251-1907 INTERNATIONAL
●
www.alto-shaam.com
COMBITHERM®
COMBINATION OVEN/STEAMER
INSTALLATION
and
MAINTENANCE
Model 20•20 ELECTRIC
ELECTRONIC CONTROL
®
Installation
Transportation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Sound Absorber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Water Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety and Operational Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Cleaning and Maintenance
Daily Gasket Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Probe Usage & Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Roll-In Cart/Food Trolley Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Oven Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Steam Generator Flush. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Decalcification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Trouble Shooting Checklist
Water Trouble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Steam Trouble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Motor Trouble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Condenser Trouble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Convection Trouble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
General Trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Service and Parts
Replacement Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wiring Schematic, 208-240V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring Diagram, 208-240V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Wiring Schematic, 440-480V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Wiring Diagram, 440-480V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Transportation Damage and Claims
Limited Warranty
20•20EC COMBITHERM INSTALLATION AND MAINTENANCE MANUAL
20•20EC COMBITHERM® TABLE OF CONTENTS
TRANSPORTATION
Upon receipt of the Combitherm Combination OvenSteamer, check the exterior of the shipping crate for any
physical damage that could result in damage to the
contents. If the oven was not received from the carrier in
an upright position, there is a stronger possibility of
concealed damage. Uncrate the unit carefully and inspect
for any transit damage. Immediately report any damage to
the delivering freight carrier.
The oven must remain on the pallet while being moved to
the installation site by fork-lift or pallet lift truck.
When removing the oven from the pallet to the
installation site, do not lift at the condenser
housing. Care should also be used to prevent
damage to the drip-tray hanger permanently
mounted at the bottom of the oven door.
INSTALLATION SITE
HOOD INSTALLATION IS REQUIRED
In order to ensure proper ventilation, a minimum distance
of at least 6” (152mm) must be kept from the control panel
side [left] of the oven and any adjoining surfaces. In order
to provide sufficient clearance for service, 20 inches (508mm)
must be allowed on the left-hand side of the unit. If this
clearance can not be provided, it will be necessary to
disconnect the gas, water and drain connection in order to
move the oven via a lift truck to gain access for servicing,
and this will not be covered by warranty.
Allow a minimum of 3-1/2” to 5” (89mm to 127mm) from
the right side of the oven to allow the door to open to at
least a 90° angle. Fully opened, the door will extend up to
a 225° angle.
Allow a minimum clearance of 5” (127mm) from the back
of the oven for plumbing connections.
Allow adequate clearance for the steam vent(s) located at
the top [right-rear] of the oven.
Do not install the oven adjacent to heat producing
equipment such as fryers, broilers, etc. Minimum
clearance recommended: 20” (50cm).
Adjust the Combitherm Oven to LEVEL on a stable,
horizontal surface by means of the height-adjustable legs.
ALL INSTALLATION INSTRUCTIONS AND
REQUIREMENTS MUST BE STRICTLY OBSERVED.
IMPROPER CONNECTION OF THIS APPLIANCE
NULLIFIES ALL WARRANTIES.
20•20EC COMBITHERM INSTALLATION AND MAINTENANCE MANUAL
PG. 1
COMBITHERM® INSTALLATION and SPECIFICATIONS
TRANSPORTATION
THIS S IDE UP
COMBITHERM
➞
➞
INSTALLATION SITE
6"
(152mm)
MINIMUM
ALLOW ADDITIONAL
ACCESS FOR SERVICE
20"
(50cm)
MINIMUM
COMBITHERM®
OFF
POWER
5"
(127mm)
ON
FOLLOWING ELECTRICAL CONNECTION,
THE FAN MUST ROTATE IN THE SAME
DIRECTION AS THE ARROW
LOCATED ON THE OVEN FAN
MOTOR.
THIS APPLIANCE WILL NOT FUNCTION
PROPERLY AND DAMAGE CAN OCCUR IF
THE MOTOR ROTATION IS NOT CORRECT.
COMBITHERM® INSTALLATION and SPECIFICATIONS
ELECTRICAL INSTALLATION
An electrical wiring diagram is located behind
the control panel on the left side of the oven.
The oven must be installed by a qualified
electrician. This appliance must be branch
circuit protected with proper ampacities, in
accordance with the wiring diagram located in
the electrical compartment of the oven. The
oven must be properly grounded in accordance
with the National Electrical Code and
applicable local codes.
CAUTION
ENSURE THE AVAILABLE
POWER SOURCE MATCHES
THE VOLTAGE STAMPED
ON THE NAMEPLATE OF
THE OVEN.
For supply connections, use the wire size
posted on the label located behind the left hand
side panel.
Each oven motor displays an arrow showing the
direction of the motor rotation.
TO CHANGE MOTOR DIRECTION, EXCHANGE
TWO OF THE INCOMING PHASES.
20•20EC COMBITHERM INSTALLATION AND MAINTENANCE MANUAL
PG. 2
ELECTRICAL INSTALLATION
ELECTRICAL
PANEL
ELECTRICAL
CONNECTION
ELECTRICAL
PANEL
TERMINAL
BLOCK
MOTOR
20•20EC COMBITHERM INSTALLATION AND MAINTENANCE MANUAL
PG. 3
COMBITHERM® INSTALLATION and SPECIFICATIONS
WATER DRAINAGE
The oven must discharge through an indirect waste
pipe by means of an air gap. The drain thread is
1-1/4" NPT.
A union is required. Install a 1-1/4" (32mm)
diameter drain line with a maximum length of 12”
(305mm) and a 3 to 5 percent gradient.
ATTENTION: In the U.S.A., this equipment is to be
installed to comply with the Basic Plumbing Code of
the Building Officials and Code Administrators
International, Inc. [BOCA], and the Food Service
Sanitation Manual of the Food & Drug
Administration [FDA]
WATER SUPPLY
CONNECT TO POTABLE ( DRINKABLE) COLD WATER ONLY
WATER PRESSURE REQUIREMENTS: MINIMUM 45 PSI (3 BAR)
MAXIMUM 75 PSI (5 BAR)
A shut-off valve and approved back-flow preventer must be installed when
connecting the oven to the cold water intake. Connecting pipe thread is
3/4” NPT.
A hose connector (HO-22116) is supplied for flexible hose connection to the
cold water source.
PIPE SEALING TAPE (TEFLON) MUST BE USED AT ALL
CONNECTION POINTS.
The use of a pipe sealing compound
is not recommended.
The shut-off valve must be in the OPEN position
when the oven is being used.
RESET BUTTON
TEMPERATURE
OVERIDE
THERMOSTAT
POWER
INTAKE
DRAIN OUTLET
1-1/4" (32mm) DIA.
SOUND
ABSORBER
A
WATER INTAKE
FILTER
OPTIONAL WATER FILTER
DRAIN LINE
1-1/4" (32mm) diameter
12" (305mm) maximum length
AIR GAP
3% TO 5%
GRADIENT
WASTE PIPE
1-1/2" to 2" minimum diameter
(c. 38mm to 51mm)
A
20•20EC COMBITHERM INSTALLATION AND MAINTENANCE MANUAL
PG. 4
COMBITHERM® INSTALLATION and SPECIFICATIONS
IMMEDIATELY FOLLOWING INSTALLATION:
BEFORE SWITCHING POWER SWITCH “ON”
✔ Make certain Power Switch is in the “OFF” position.
✔ Make certain all unnecessary articles are removed from the oven interior.
✔ Turn the water supply “ON” and make certain the connections do not leak.
✔ Flood the interior oven compartment floor with water from hand-held hose and check
to make certain the drain connections do not leak.
✔ Make certain the fan guard cover plate is in place and secure.
✔ Make certain the electrical connections are correct and sound.
IF ALL IS IN ORDER …
WITH DOOR CLOSED, TURN POWER SWITCH “ ON”
1. Press the STEAM program key to automatically fill the steam generator and heat the water to
stand-by mode temperature of 150°F (65° C).
●
The STEAM program LED light will illuminate.
• The LOW-WATER LED light will illuminate and flash until the steam generator has been filled.
• The STEAM LED light will illuminate and flash until the water temperature has reached the
stand-by mode temperature of 150°F (65°C).
●
When the STEAM LED light stops flashing, the oven is ready for immediate operation in the
STEAM mode or the selection of any other program mode.
2. Push SUPERHEATED STEAM AND CONVECTION program key. Press COOK TEMP
and use and to set the temperature to 250°F (120°C). Press and hold TIMER key for
continuous ON time until "–––" appears in the display .
Press START key to verify proper program operation.
●
The STEAM LED will illuminate periodically whenever the oven is producing steam.
●
The CONVECTION LED will illuminate periodically whenever the oven is producing convection heat.
●
The FAN LED will be illuminated throughout the entire cooking process.
Carefully open oven door, observing steam caution.
— Indicator lights for FAN and STEAM should go “OUT.”
Close the door and press STOP key to end program check.
3. Push CONVECTION program key. Press COOK TEMP and use and to set the
temperature to 250°F (120°C). Press and hold TIMER key for continuous ON time until
"–––" appears in the display .
Press START key to verify proper program operation.
●
The CONVECTION LED will illuminate periodically whenever the oven is producing heat.
●
The FAN LED will be illuminated throughout the entire cooking process.
Carefully open oven door, observing steam caution.
— Indicator lights for FAN and CONVECTION should go “OUT.”
Close the door and press STOP key to end program check.
4. TURN POWER “OFF.”
THE OVEN IS NOW READY FOR NORMAL OPERATION.
For safe release of the cooking compartment steam,
initially open the door approximately 2" (50mm) only.
Stand behind the door as the hot steam is released.
STEAM!
START-UP
CHECK
LIST
✔
✔
✔
START
STOP
START
STOP
START
STOP
START
STOP
20•20EC COMBITHERM INSTALLATION AND MAINTENANCE MANUAL
PG. 5
COMBITHERM® INSTALLATION and SPECIFICATIONS
Model 20•20
Installation Data
Type of unit Floor standing
Pan capacity 40 Full-size pans
*Additional wire shelves (20" x 12" x 2-1/2")
required for maximum capacity 20 Full-size sheet pans*
(18" x 26" x 1")
Side rack spacing 2-5/8" (67mm)
Oven chamber width 26-1/4" (667mm)
Oven chamber depth 32-11/16" (830mm)
Oven chamber height 60-1/4" (1530mm)
Net weight 958 lb (435 kg)
Electrical specs
208/240V — 50/60 Hz, 3 ph At 208V At 240V
Power connection 54.3 kW 72.4 kW
Current (Amps/phase) 150.9 174.4
Terminal Block connection 3 Wire Plus Ground
AWG 4 or larger
440/480V — 50/60 Hz, 3 ph At 440V At 480V
Power connection 60.8 kW 72.4 kW
Current (Amps/phase) 80.0 87.2
Terminal Block connection 3 Wire Plus Ground
AWG 2 or larger
Noise level 44 dB(A)
Construction Stainless Steel Type 304
Interior 20 gauge
Exterior 20 gauge
Insulation 1-5/8" (40mm) thick
Hose length 86-5/8" (2200mm)
hand shower
Cold water intake 3/4" NPT
Water pressure 45 to 75 psi (3 to 5 bar)
(Flowing pressure)
Drain connection 1-1/4" NPT
Accessories
Chicken Roasting Rack
— 6 chicken capacity
(fits full-size pan) . . . . . . . . . . . . SH-23000
— 8 chicken capacity
(fits full-size pan) . . . . . . . . . . . . SH-23619
— 10 chicken capacity (fits in side racks) . . . . . . . . . . . SH-22634
Grease Tray
WITH DRAIN (1-1/2" [38mm] DEEP) . . . . . . . . . . . . . 4758
Grease Tray WITH DRAIN (2-3/4" [70mm] DEEP) . . . . . . . . . . . . 14475
Oven Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CE-24750
Specially formulated for Combitherm Ovens
Twelve (12) containers/case, 1 quart (c. 1 liter) each
Preheat Sealing Strip
➥ FOR USE IN PLACE OF ROLL-IN CART WHILE PREHEATING . . . . . . . . . 14568
Roll-In Cart
➥ INTERCHANGEABLE WITH 20•20W & QC-100. . . . . . . . . . . . . . . . 5815
Shelves, Stainless Steel Wire . . . . . . . . . . . . . . . . . . . . SH-22473
Water Conditioner Kit (includes 1 filter cartridge) . . . . . FI-23014
Water Conditioner Cartridge . . . . . . . . . . . . . . . . . . . . . FI-23017
Safety and Operational
Precautions:
●
Before opening the oven door during
normal operation, always press the STOP key and wait
a few seconds to allow the fan to stop rotating.
●
Before using the hand sprayer, wait until the cooking
compartment has cooled down to at least 130°F (54°C).
●
When using the hand sprayer, make certain the power
switch is in the OFF position.
●
Never use the oven cleaner or the hand sprayer to clean
the outer surface of the oven.
●
Flush the steam generator, clean the oven and oven
gasket on a daily basis.
●
To avoid unnecessary heat loss and the possibility
of overheating the convection heating elements,
NEVER preheat the model 20•20 WITHOUT A ROLL-IN
CART
(TROLLEY) or a PREHEAT SEALING STRIP.
NEVER allow this model to remain in the stand-by
mode for prolonged periods WITHOUT A ROLL-IN CART
(TROLLEY) or a PREHEAT SEALING STRIP.
(100mm)
4"
9-13/16"
(250mm)
COMBITHERM®
MFG. BY ALTO-SHAAM® INC.
POWER
bio
R
COOK TEMP CORE TEMP TIMER
1
4
7
0
DRAIN
OPEN
34° - 210°F
COOL DOWN
43-7/16" (1100mm)
3-15/16"
(100mm)
COLD WATER INTAKE
4-5/16"
(125mm)
CONVECTION
SUPERHEATED STEAM
AND CONVECTION
CONVECTION
BIO-STEAM
1° - 99°C
START
STOP
PROGRAM
2
56
89
ENTER
OFF
FULL
SPEED
HALF
SPEED
WATER DRAIN
ELECTRICAL
CONNECTION
(BOTTOM)
STEAM
FAN
STEAM
RETHERM
3
41" (1041mm)
11-13/16"
(300mm)
TOP VENTS
4"
(102mm)
CLEARANCE
43" (1092mm)
45-7/16" (1153mm)
74-3/4" (1898mm)
4-3/8"
(111mm)
65-3/4" (1670mm)
74-13/16" (1900mm)
9-1/16"
(230mm)
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