Alto-Shaam ML Series Owner's manual

#6001 • 05/06
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 U.S.A. ONLY
WEBSITE: www.alto-shaam.com
PRINTED IN U.S.A.
Electric ML Series
• INSTALLATION
• OPERATION
• MAINTENANCE
Combination
Oven / Steamer

®
COMBITHERM
ELECTRIC
INSTALLATION
Delivery & Unpacking . . . . . . . . . . . . . .1
Safety Procedures & Precautions . . . . . .2
Basic Installation Site Requirements . . . . . .3
Ventilation Requirements . . . . . . . . . . .3
Positioning On Site . . . . . . . . . . . . . . . .4
Installation Requirements . . . . . . . . . . .5
Water Supply . . . . . . . . . . . . . . . . . . . .7
Water Drainage . . . . . . . . . . . . . . . . . . .8
Stacking Installation . . . . . . . . . . . . . . .9
Restraint Requirements - Mobile . . . . . .9
Electrical Installation . . . . . . . . . . . . .10
Additional Technical Data . . . . . . . . . .11
Instructions to be Provided
to Owner/Operator . . . . . . . . . . . . .12
INSTALLATION CHECK LIST . . . . . .13
IMPORTANT SAFETY PRECAUTIONS . .14
CONTROL PANEL IDENTIFICATION
• Standard and Deluxe . . . . . . . . . . . . . .16
•S Control . . . . . . . . . . . . . . . . . . . . . . .18
CLEANING & MAINTENANCE
Preventive Maintenance . . . . . . . . . . . .19
Routine Cleaning Requirements . . . . . .19
Steam Generator Flush
•Standard and Deluxe . . . . . . . . . . . .20
Oven Cleaner Requirements . . . . . . . . .21
Daily Oven Cleaning
•S Control . . . . . . . . . . . . . . . . . . . . .23
•Standard and Deluxe . . . . . . . . . . . .24
Decalcification
•S Control . . . . . . . . . . . . . . . . . . . . .26
•Standard and Deluxe . . . . . . . . . . . .28
Roll-In Cart/Food Trolley Cleaning . . . . .30
Daily Gasket Cleaning . . . . . . . . . . . . .30
EMERGENCY OPERATION . . . . . . . . . . .31
CONTROL RESET . . . . . . . . . . . . . . . . . .32
TROUBLESHOOTING . . . . . . . . . . . . . . .32
SERVICE SECTION
SERVICE VIEW•OVEN INTERIOR . . . . . . .34
Models 6•10, 7•14, 10•10, 10•18, 12•20
SERVICE VIEW•SIDE PANEL ACCESS . . . .35
Models 6•10, 7•14, 10•10, 10•18, 12•20
SERVICE VIEW•OVEN EXTERIOR . . . . . . .36
Model 20•20 SHOWN WITH OPTIONAL PLATE CART
SERVICE VIEW•OVEN INTERIOR . . . . . . .37
Model 20•20
SERVICE VIEW•SIDE PANEL ACCESS . . . .38
Model 20•20
SERVICE VIEW•SIDE PANEL ACCESS . . . .39
Model 20•20
TOP MOTOR AND WIRING TREE ASSEMBLY
BOTTOM MOTOR AND WIRING TREE ASSEMBLY
PARTS LIST
DOOR AND EXTERIOR PARTS . . . . . . . . . . . . . . .40
ELECTRICAL AND ELECTRONIC PARTS . . . . . . . . .41
MECHANICAL PARTS . . . . . . . . . . . . . . . . . . . .43
PLUMBING PARTS . . . . . . . . . . . . . . . . . . . . . .44
TROLLEY PARTS . . . . . . . . . . . . . . . . . . . . . . .44
S CONTROL PARTS . . . . . . . . . . . . . . . . . . . . .45
WIRING SCHEMATICS
6•10ML, 10•10ml, 10•18ml, 20•20ml . . .46-49
WIRING DIAGRAMS
Standard & Deluxe Control (ALL MODELS). . . .50-66
S Control (ALL MODELS). . . . . . . . . . . . . . . . .67
Transportation & Damage Claims . . . . . . .68
Limited Warranty . . . . . . . . . . . . . . . . . . . .68
TABLE OF CONTENTS

COMBITHERM®INSTALLATION
#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 1
®
DELIVERY
This Alto-Shaam appliance has been
thoroughly tested and inspected to insure only the
highest quality unit is provided. Upon receipt,
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.
This appliance, complete with unattached
items and accessories, may have been delivered in
one or more packages. Check to ensure that all
standard items and options have been received
with each model as ordered.
Save all the information and instructions
packed with the appliance. Complete and return
the warranty card to the factory as soon as
possible to assure prompt service in the event of a
warranty parts and labor claim.
This manual must be read and understood by
all people using or installing the equipment
model. Contact the Alto-Shaam service
department if you have any questions concerning
installation, operation, or maintenance.
NOTE: All claims for warranty must include the
full model number and serial number of
the unit.
UNPACKING
1. Carefully remove the appliance from the
carton or crate.
NOTE: Do not discard the carton and other
packaging material until you have
inspected the unit for hidden damage
and tested it for proper operation.
2. The oven must remain on the pallet
while being moved to the installation
site by fork lift or pallet lift truck.
Note dimensions required for doorways and aisles
for access of the oven and pallet to the
installation site. Transport the oven in an upright
and level position only. Do not tilt the oven.
With the oven on the original pallet, remove the
carton and all packaging materials. Open the
oven door and remove all documents and other
materials from the oven interior. Remove the
roll-in cart if so equipped.
3. Read all instructions in this manual carefully
before initiating the installation of this appliance.
DO NOT DISCARD THIS MANUAL.
This manual is considered to be part of the
appliance and is to be provided to the owner
or manager of the business or to the person
responsible for training operators. Additional
manuals are available from the Alto-Shaam
service department.
4. Remove all protective plastic film, packaging
materials, and accessories from the appliance
before connecting electrical power. Store any
accessories in a convenient place for future use.

#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 2
SAFETY PROCEDURES
AND PRECAUTIONS
Knowledge of proper procedures is essential to the
safe operation of electrically and/or gas energized
equipment. In accordance with generally accepted
product safety labeling guidelines for potential
hazards, the following signal words and symbols
may be used throughout this manual.
Used to indicate the
presence of a hazard that
will cause severe personal
injury, death, or substantial
property damage if the
warning included with this
symbol is ignored.
Used to indicate the
presence of a hazard that
can cause personal injury,
possible death, or major
property damage if the
warning included with this
symbol is ignored.
Used to indicate the
presence of a hazard that
can or will cause minor or
moderate personal injury
or property damage if the
warning included with this
symbol is ignored.
Used to indicate the
presence of a hazard that
can or will cause minor
personal injury, property
damage, or a potential
unsafe practice if the
warning included with this
symbol is ignored.
Used to notify personnel of
installation, operation, or
maintenance information that is
important but not hazard related.
1. This appliance is intended to cook, hold or
process foods for the purpose of human
consumption. No other use for this
appliance is authorized or recommended.
2. This appliance is intended for use in
commercial establishments where all
operators are familiar with the purpose,
limitations, and associated hazards of this
appliance. Operating instructions and
warnings must be read and understood by
all operators and users.
3. Any troubleshooting guides, component
views, and parts lists included in this manual
are for general reference only and are intended
for use by qualified technical personnel.
4. This manual should be considered a
permanent part of this appliance. This
manual and all supplied instructions,
diagrams, schematics, parts lists, notices, and
labels must remain with the appliance if the
item is sold or moved to another location.
NOTE:

#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 3
BASIC INSTALLATION SITE REQUIREMENTS
HOOD INSTALLATION IS REQUIRED
•Installation surface must be level.
•Do not install adjacent to flammable surfaces.
•Deep fat fryers or similar heat producing
equipment must not be installed in the
immediate vicinity of the hand shower.
The oven must remain on the pallet while being moved
to the installation site with fork lift or pallet lift truck.
Do not tilt the oven.
VENTILATION REQUIREMENTS
A steam ventilation hood is mandatory for the operation of the oven. The ventilation hood must be installed
in accordance with local building codes for steam exhaust and must protrude 12-inches to 20-inches
(300mm to 500mm) over the front side of the oven. A grease filter must be located in the protruding area of
the hood. Grease filters should be thoroughly cleaned on a regular basis following manufacturer's
instructions. Ventilation hoods must ensure an adequate amount of incoming air during operation and must
be operated whenever the combination oven/steamer is used in order to avoid the accumulation of
condensation in the hood area.
Where automatically operated appliances are vented through a ventilating hood or exhaust
system equipped with a damper or with a power means of exhaust, provisions shall be made
to allow the equipment to operate only when the damper is open to a position to properly
vent the appliance and when the power means of exhaust is in operation.
IN ACCORDANCE WITH NFPA 54 COMMONWEALTH OF MASSACHUSETTS ONLY.
If a ventless hood is to be installed, we
recommend the Combitherm Ventless Hood for the
appropriate model oven. Ventless hoods are
available for the Combitherm models
6•10, 7•14, 10•10, and 10•18 (VHML-10) electric.
MODEL VHML-10
Air Movement 1200 CFM
Drain Connection 3/4" (19,1mm) NPT
Electrical 208-240 V.A.C. —50/60 Hz, 1 ph
240 watts, 1.0 amps
Ship Weight 126 lb (57 kg)
Replacement
Filters
GREASE FI-23062
CHARCOAL FI-24102
COMBITHERM®INSTALLATION
N
O
T
E
DO NOT store or use any flammable
liquids or allow flammable vapors
in the vicinity of any appliance.

#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 4
POSITIONING ON SITE
Before removing the oven from the pallet for positioning on
site, it is important to remove the drip tray to prevent
damage to the tray caused by the lifting forks. The drip tray
is fastened to the bottom of the oven with three sheet metal
screws as illustrated. This requirement pertains to the
following models.
This step does not
pertain to models
12•20ML and 20•20ML.
Lift the oven from the pallet with a fork lift or
pallet lift truck positioned at the front of the
oven. To avoid damage, position the lift forks to
the left of the condenser as indicated in one of
the two diagrams shown below. For additional
damage protection, the use of two wooden
boards, placed between the bottom of the oven
and the lifting forks, is strongly recommended.
After the oven is correctly positioned on site,
reattach the drip tray.
MODEL
6•10
10•10
7•14
10•18
12•20
20•20
NET WEIGHT
285 lb (129 kg)
385 lb (175 kg)
405 lb (184 kg)
514 lb (233 kg)
665 lb (302 kg)
958 lb (435 kg)
15"
(381mm)
MODELS
6•10
10•10
7•14
10•18
CONDENSER
10" (254mm)
3"
(76mm)
8" (203mm)
CONDENSER
MODELS
12•20
20•20
MODELS 6•10ML
10•10ML
7•14ML
10•18ML
COMBITHERM®INSTALLATION
➤
OBSERVE ATTENTION LABEL ON OVEN FOR
AREA TO AVOID WITH LIFTING FORK.
TO PREVENT PERSONAL INJURY,
USE CAUTION WHEN MOVING OR
LEVELING THIS APPLIANCE.
MODEL
6•10
10•10
7•14
10•18
12•20
20•20
WIDTH
37" (940mm)
35" (889mm)
51" (1259mm)
51" (1259mm)
58" (1473mm)
54" (1372mm)
DEPTH
47" (1194mm)
45" (1143mm)
44" (1118mm)
44" (1118mm)
53" (1346mm)
53" (1346mm)
HEIGHT W/PALLET
69" (1753mm)
78" (1981mm)
79" (2007mm)
74" (1880mm)
61" (1549mm)
83" (2108mm)
WEIGHT W/PALLET
415 lb (188kg)
495 lb (225kg)
535 lb (243kg)
754 lb (342kg)
878 lb (398kg)
1364 lb (619kg)
PALLETIZED DIMENSIONS AND WEIGHT

#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 5
INSTALLATION REQUIREMENTS
■■
■■Do not install oven adjacent to flammable
surfaces. Strictly observe all local fire
safety regulations.
■■
■■In order to ensure proper ventilation, a
minimum distance of at least 6-inches
(152mm) must be kept from the control
panel side [LEFT] of the oven and any
adjoining surfaces.
NOTE: In addition to ventilation
requirements, additional clearance
is needed for service access. A
minimum distance of 18-inches
(457mm) is strongly recommended.
■■
■■Allow a minimum of 4-inches (102mm) 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. If
the oven is furnished with the retractable
door option, allow a minimum clearance of
6-1/2-inches (16cm).
■■
■■Allow a minimum clearance of 4-inches
(102mm) from the back of the oven for
plumbing connections.
■■
■■Allow a 20-inch (50cm) clearance at the top of
the oven for free air movement and for the
steam vent(s) located at the top [RIGHT-REAR].
■■
■■Do not install the oven adjacent to heat
producing equipment such as fryers,
broilers, etc. Minimum clearance
recommended: 20-inches (50cm).
Place the Combitherm oven on a stable, LEVEL
horizontal surface. For counter-top models, the
oven stand must be level. In addition, the overall
height of the oven should be positioned so the
operating controls and shelves may be
conveniently reached from the front.
ALL INSTALLATION INSTRUCTIONS
AND REQUIREMENTS MUST BE
STRICTLY OBSERVED.
IMPROPER CONNECTION
OF THIS APPLIANCE
NULLIFIES ALL WARRANTIES.
18"
(46cm)
4"
(102mm)
4" (102mm)
RETRACTABLE
DOOR OPTION:
6-1/2" (165mm)
20"
(50cm)
MINIMUM
20"
(50cm)

#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 6
COMBITHERM®INSTALLATION
ASSEMBLY REQUIREMENTS
HAND SHOWER HOLDER
Fasten the hand shower holder in the holes
provided on the oven using the three (3) screws
packaged with the holder.
DRIP TRAY
Fasten the drip tray to the bottom of the oven
using the three (3) screws as illustrated.
This step does not pertain to models
12•20ML and 20•20ML.
FAILURE TO PROPERLY INSTALL
THE DRIP TRAY CAN OR WILL
CAUSE MAJOR EQUIPMENT
DAMAGE AND WILL RESULT IN A
LEAKAGE HAZARD THAT CAN
CAUSE PERSONAL INJURY.

#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 7
WATER SUPPLY
CONNECT TO POTABLE (DRINKABLE) COLD WATER ONLY
WATER PRESSURE REQUIREMENTS:MINIMUM 30 PSI (2 BAR)
MAXIMUM 90 PSI (6 BAR)
Flush the water line at the installation site before connecting the oven to the water supply. A shut-off valve and
approved back-flow preventer must be installed when connecting the oven to the cold water intake. The water
supply line must be a minimum of 3/4-inch (NPT) (19mm). A hose connector is supplied for flexible hose
connection to the COLD water source. Connected water should test at hardness level of 5 to 9 grains per gallon
(85 to 154 ppm). A water filtration system is recommended if the water supply is between 5 and 9 gpg of
hardness. If water tests over 18 gpg of hardness (344 ppm), the
installation of a water softener to maintain oven function is strongly
recommended.
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.
The hand shower spray hose is installed adjacent
to the cold water intake connection. A ball valve
is installed on the oven for hose connection to the
COLD water source. Assemble the washer and
the flexible hose on the ball valve and hang the
spray handle on the holder previously installed
on the oven.
Alto-Shaam now offers an improved water filtration system for
Combitherm®. The CombiGuard™triple-guard water filtration
system filters dirt, sediment, and other debris as small as 1/2
micron. This system also significantly reduces chlorine content to
protect against corrosive chlorine compounds. CombiGuard
improves equipment efficiency, reduces service requirements and
extends the life of the Combitherm. Filtration system includes one
filter cartridge. Additional cartridges (FI-26356) can be
purchased separately.
COMBITHERM®INSTALLATION
ELBOW
WATER
COLD WATER —DRINKING QUALITY
INDIRECT WASTE PIPE WITH AIR GAP:1-1/2" NPT
INLET:3/4" NPT LINE PRESSURE:30 to 90 psi
2 to 6 bar
CHLORINE:less than 0.8 ppm CHLORIDE:less than 70 ppm
HARDNESS:5 to 9 gpg PH RANGE:7.0 to 9.0
85 to 154 ppm
WATER SOFTENER SHOULD BE UTILIZED
IN HARD WATER AREAS.
ITEM FI-23014

#6001 COMBITHERM ELECTRIC INSTALLATION AND MAINTENANCE MANUAL
PG. 8
COMBITHERM®INSTALLATION
WATER DRAINAGE
The oven must discharge through an
indirect waste pipe by means of an air gap.
The drain thread is 1-1/4-inch (32mm) NPT.
A union is required. Install a 1-1/4-inch
(32mm) diameter drain line. The drain line
must always be a positive gradient away
from the Combitherm oven and not more than
12-inches (305mm) before an air gap.
NOTE: 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].
If several units are to be connected to one
drain pipe, the dimensions of the pipe must
be sufficient to allow an unobstructed water
drain system.
AVERAGE DRAIN WATER TEMPERATURE
149°F (65°C)
1-1/4" (32mm) diameter NPT
WASTE PIPE
1-1/2" to 2" minimum diameter
(c. 38mm to 51mm)
2" (51mm)
Air Gap