Groen CONVECTION COMBO OM-CC-G Series User manual

IMPORTANT INFORMATION
IMPORTANT INFORMATIONIMPORTANT INFORMATION
IMPORTANT INFORMATION KEEP FOR OPERATOR
KEEP FOR OPERATORKEEP FOR OPERATOR
KEEP FOR OPERATOR IMPORTANT INFORMATION
IMPORTANT INFORMATIONIMPORTANT INFORMATION
IMPORTANT INFORMATION
G-CC-MOLAUNAMROTAREPO
Part Number 121020 - Rev. A DOMESTIC
MODEL: CC10-GF, (2)CC10-GF
CC20-GF, (2)CC20-GF
CONVECTION COMBO™
Combination Steamer-
Oven
THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE. READ, UNDERSTAND AND
FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED IN THIS MANUAL.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS
AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
POST IN A PROMINENT LOCATION
INSTRUCTIONS TO BE FOLLOWED IN THE EVENT USER SMELLS GAS.
THIS INFORMATION SHALL BE OBTAINED BY CONSULTING YOUR LOCAL
GAS SUPPLIER. AS A MINIMUM, TURN OFF THE GAS AND CALL YOUR
GAS COMPANY AND YOUR AUTHORIZED SERVICE AGENT. EVACUATE
ALL PERSONNEL FROM THE AREA.
WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION,
SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY
OR DEATH. READ THE INSTALLATION, OPERATING AND MAINTENANCE
INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS
EQUIPMENT.
Information contained in this document is
known to be current and accurate at the time
of printing/creation. Unified Brands recom-
mends referencing our product line websites,
unifiedbrands.net, for the most updated
product information and specifications.

OM-CC-G
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IMPORTANT — READ FIRST — IMPORTANT
WARNING: THE UNIT MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH ELECTRICITY
AND PLUMBING. IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR
DAMAGE TO THE EQUIPMENT. THE UNIT MUST BE INSTALLED IN ACCORDANCE WITH
APPLICABLE CODES.
CAUTION: SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN CUT.
CAUTION: DO NOT INSTALL THE UNIT IN ANY WAY WHICH WILL BLOCK THE RIGHT SIDE VENTS,
OR WITHIN 12 INCHES OF A HEAT SOURCE SUCH AS A BRAISING PAN, FRYER, CHAR
BROILER OR KETTLE.
CAUTION: LEVEL THE UNIT FRONT TO BACK, ORPITCH IT SLIGHTLY TO THE REAR, TO AVOID
DRAINAGE PROBLEMS.
WARNING: TO AVOID DAMAGE OR INJURY, FOLLOW THE WIRING DIAGRAM EXACTLY WHEN
CONNECTING A UNIT.
CAUTION: DO NOT USE PLASTIC PIPE. DRAIN MUST BE RATED FOR BOILING WATER.
WARNING: DO NOT CONNECT THE DRAIN DIRECTLY TO A BUILDING DRAIN.
WARNING: BLOCKING THE DRAIN IS HAZARDOUS.
IMPORTANT: Improper drain connection will void warranty.
IMPORTANT: Do not allow any water traps in the line. A trap can cause pressure to build up inside the
cavity during steaming, which will make the door gasket leak.
WARNING: WHENYOU OPEN THE DOOR, STAY AWAY FROM STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.
WARNING: BEFORE CLEANING THE OUTSIDE OF THE STEAMER, DISCONNECT THE ELECTRIC POWER
SUPPLY. KEEP WATER AND CLEANING SOLUTIONS OUT OF CONTROLS AND ELECTRICAL
COMPONENTS. NEVER HOSE OR STEAM CLEAN ANY PART OF THE UNIT.
WARNING: ALLOW COOKING CHAMBER TO COOL BEFORE CLEANING.
WARNING: CAREFULLY READ THE WARNINGS AND FOLLOW THE DIRECTIONS ON THE LABEL OF EACH
CLEANING AGENT. USE SAFETY GLASSES AND RUBBER GLOVES AS RECOMMENDED BY
DELIMING AGENT MANUFACTURER.
WARNING: DO NOT MIX DE-LIMING AGENTS (ACID) AND DE-GREASERS (ALKALI).
WARNING: DO NOT PUT HANDS OR TOOLS INTO THE COOKING CHAMBER UNTIL THE FAN HAS
STOPPED TURNING.
WARNING: DO NOT OPERATE THE UNIT UNLESS THE REMOVABLE RIGHT SIDE PANEL HAS BEEN
RETURNED TO ITS PROPER LOCATION.
NOTICE: DO NOT USE A CLEANING OR DE-LIMING AGENT THAT CONTAINS ANY SULFAMIC ACID
OR ANY CHLORIDE, INCLUDING HYDROCHLORIC ACID. IF THE CHLORIDE CONTENT OF
ANY PRODUCT IS UNCLEAR, CONSULT THE DISTRIBUTOR OR MANUFACTURER.
NOTICE: DO NOT USE ANY DE-GREASER THAT CONTAINS POTASSIUM HYDROXIDE OR SODIUM
HYDROXIDE OR THAT IS ALKALINE.
WARNING: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN OR THEIR
AUTHORIZED DISTRIBUTOR VOIDS ALL WARRANTIES AND CAN RESULT IN BODILY INJURY
TO THE OPERATOR AND DAMAGE THE EQUIPMENT. SERVICE BY OTHER THAN FACTORY-
AUTHORIZED PERSONNEL WILL VOID ALL WARRANTIES.
WARNING: HIGH VOLTAGE EXISTS INSIDE CONTROL COMPARTMENTS. DISCONNECT FROM BRANCH
BEFORE SERVICING. FAILURE TO DO SO CAN RESULT IN SERIOUS INJURY OR DEATH.

OM-CC-G
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Table of Contents
IMPORTANT OPERATOR SAFETY WARNINGS .................................2
EQUIPMENT DESCRIPTION ................................................4
INSPECTION AND UNPACKING .............................................5
WATER CONDITIONING/REQUIREMENTS .....................................6
INSTALLATION ......................................................... 7
INITIALSTART-UP.......................................................11
OPERATING INSTRUCTIONS ..............................................13
CLEANING ............................................................19
MAINTENANCE ........................................................26
TROUBLESHOOTING ....................................................26
DIAGRAMS AND SCHEMATICS .............................................28
REFERENCE...........................................................29
SERVICE LOG ..........................................................30
WARRANTYPROTECTION................................................31

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Equipment Description
Your Groen Convection Combo™ has a stainless
steel cooking chamber, anair heating compartment
with heat exchange tubes and fan, a steam
generator, and a control compartment which houses
electrical components.
All major components of the Convection Combo™
are encased ina 16 gauge stainless steel cabinet.
The cabinet is lined with 1½ to 2 inches (4 to 5 cm)
thick glass fiber insulation. A removable drip tray is
located beneaththe door.
Door hinges are reversible so that doors mayopen
from the left or right. Operator controls are located
on the right front of the unit, except for the pilot
control switch and manual gas shut-off valve, which
are behind the sliding access door on the right side.
Standard controls let you to operate the Convection
Combo in anyone of three cooking modes:
1. As aconvectionoven
2. As aself-contained pressureless steamer
3. As a combination oven-steamer
Models CC10-G and CC20-G differ incooking
chamber size and pan capacity:
CC10-G: 4 steam table pans (12x20x2½”),or
7 half-size (13x18")US baking pans
CC20-G: 10 steam table pans (12x20x2½”),or
9 full-size (18x26") US baking pans
Although some early model CC10-G units were
manufactured for counter-top installation, all units are
now supplied ona stainless steel stand. The smaller
ConvectionCombo™ is available as the single CC10-
GF orthe double stacked (2)CC10-GF. The larger
unit is available as the single CC20-GF or the double-
stacked (2)CC20-GF.
Controls and monitoring displays for cooking times,
operating mode and temperature selectionare onthe
control panel. The upper portionof the panel has a
digital cooking time readout and touch pads for
setting cook times. Below the timer section are lights
which indicate the status of the unit and touch pads
to select the mode of operation and to switchon
power.
A digital readout shows the selected temperature,
which is entered by turning a dial. Pilot burner status
is shown by a light on the pilot ignition switch.
An insulated, gas-fired steam generator is mounted
behind the oven. Steam enters the oventhrough a
connecting tube near the bottom left rear corner of
the oven.
Onsingle CC10-G units whichwere supplied without
stands, de-liming solution is added to the unitthrough
the portlocated ontop of the unit,directlyabove the
steam generator. Units supplied with stands have a
port on the stand just belowthe control panel. De-
liming solutiongoes through this port into afill tank,
from whichitis transferred to the steam generator
during the unique Groenautomatic cleaning cycle.
The air heating space which contains the heat
exchanger tubes is also separated from the cooking
chamber by removable left, right, top and bottom
partitions. The compartment which contains the unit’s
automatic controls and other electrical components is
onthe right side of the unit, and is accessed by
removing the right outside panel.
A drainis located in the removable bottom of the
cooking chamber. Fluids drainfrom this removable
bottom and from the permanent floor to the stainless
steel drain pipe outside the oven. The drainpipe
includes a spraycondensor,whichsuppresses any
steam escaping from the chamber. On Convection
Combo™ units manufactured after August 1, 1991,
the drain assembly also includes a drain box.
BURNER FIRING RATES
Input Rates, BTU/hour
CC10-G or per chamber for (2)CC10-G
Mode Natural Gas
at 3.7" W.C.* L.P. Gas at 10.5" W.C.*
Oven 45,000 45,000
Steam 48,000 48,000
Combo 54,600 54,600
Preheat (Max) 93,000 93,000
CC20-G or per chamber for (2)CC20-G
Mode Natural Gas
at 4.5" W.C.* L.P. Gas at 10.0" W.C.*
Oven 90,000 90,000
Steam 100,000 100,000
Combo 100,000 100,000
Preheat (Max) 186,000 186,000
*Manifold Pressure

OM-CC-G
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The unit will be delivered in either a heavy carton (CC10-G
and CC20-G) or a heavy wooden crate ((2)CC10-G and (2)
CC10-G), strapped to a wooden skid. (CC20-GF pictured)
Inspection and Unpacking
Your Convection Combo™ will be completely
assembled in a heavy shipping carton (CC10-G) or
wooden crate (CC20-G),and attached to askid. On
receipt, inspect the carton or crate carefully for
exterior damage.
CAUTION
SHIPPING STRAPS ARE UNDER TENSION AND
CAN SNAP BACK WHEN CUT.
Carefully cut the straps around the carton and detach
the sides of the carton from the skid. Pull the carton
up off the unit. Be careful to avoid personal injury or
equipment damage from nails and sharp pieces of
wood or staples whichmight be left incartonwalls.
Write down the model number, serial number and
installation date and keep this information for future
reference. Space for these entries is provided at the
top of the Service Log inthe backof this manual.
CAUTION
THIS UNIT IS VERY HEAVY. YOU SHOULD GET
HELP AS NEEDED AND USE MATERIAL
HANDLING EQUIPMENT TO REMOVE THE UNIT
FROM THE SKID AND MOVE IT TO ITS PLACE
OF INSTALLATION.
When starting installation, use material handling
equipment to lift the unit straight up off the skid.
Check packing materials to make sure loose parts
are not discarded withthe material.

OM-CC-G
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Optional separate water connections for
steam generator and drain spray condenser.
Water Conditioning
It is essential to supply the steam generator with
water that will not form scale. Even though the
steam generator is engineered to minimize scale
formation, scale development depends on the
hardness of your water and the number of hours you
operate the equipment.
In some areas, water is lowenough in mineral
content to avoid scale formation. But most water
supplies are full of minerals which form scale. It is
this scale which could lead to an early component
failure.
Your water utility can tell you about the minerals in
your water. The water going to the steam generator
should have between 30 and 40 parts per million
(ppm)total dissolved solids (TDS) and should have a
pH(acidityrating) of 7.0 to 9.0. Please followthese
simple precautions:
1. Do not rely on unproven water treatments
which are sold for scale prevention or scale
removal. They don’t always work. The best
wayto prevent scale is to supplythe purest
possible water (30-40 ppm TDS).
2. If your water contains scale-forming minerals, as
most water does, use a well-maintained water
softener. Whether an exchangeable softener
cartridge or aregenerating system is chosen, a
regular exchange schedule is essential.
3. Installing a water meter between the softener
and the steamer will provide an accurate gauge
of water use, and will help determine when to
exchange cartridges orregenerate the softener.
Using a water softener will provide longer
generator life, higher steam capacity, and reduce
maintenance requirements.
4. If younotice a slowdowninsteam production,
have the unitchecked for scale build-up. Heavy
scale reduces the unit’s ability to boil water.
MINIMIZE SCALE PROBLEMS, BY USING AND
MAINTAINING A SOFTENER, AND BY CLEANING
THE STEAM GENERATOR REGULARLY.
Groen ConvectionCombo™ ovens are also available
with an option for two separate water connections —
one for the steam generator(soft water),the other
for the spray condenser (untreated water). The
steam generator only uses 14 to 31% of a
combination oven’s water.
Since softener systems are typically sized by total
GPH (gallons per hour), the second connection could
reduce treatment requirements by up to 80%,
resulting in significant savings.

OM-CC-G
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Installation and Start-Up
WARNING
THE UNIT MUST BE INSTALLED BY PERSONNEL WHO ARE QUALIFIED TO WORK WITH ELECTRICITY AND
PLUMBING. IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE
EQUIPMENT. THE UNIT MUST BE INSTALLED INACCORDANCE WITH APPLICABLE CODES.
CAUTION
DO NOT INSTALL THE UNIT WITH THE RIGHT SIDE VENTS BLOCKED OR WITHIN 12 INCHES OF A HEAT
SOURCE (SUCH AS A BRAISING PAN, DEEP FRYER, CHAR BROILER OR KETTLE). DO NOT INSTALL TO
THE LEFT OF ANY OPEN-FLAME EQUIPMENT.
TO AVOID DRAINAGE PROBLEMS, LEVEL THE UNIT FRONT TO BACK.
Installation
1. Mounting
If you wishto install a Convection Combo™ on
top of another, youshould obtain a double
stacked unitfrom the factory.
The unit must be installed inan adequately
vented room with a provisionfor anample air
supply to the unit. The unit must be installed
completely under a ventilation hood, since flue
products exitthe appliance overits entire depth.
Anything which might restrict the flow of air for
ventilation and combustion must be removed. Do
not obstruct the flue cover or any front, side, top
or rear vents after installation. The area directly
around the ConvectionCombo™ mustbe cleared
of all combustible material.
Installation must comply with local codes, or in
the absence of local codes, conform to the
National Fuel Gas Code ANSI Z223.1 - latest
edition, including:
“The appliance and its individual shut-off valve
must be disconnected from the gas supply
piping system during anypressure testing of that
system at test pressures in excess of ½ psig
(3.45 kPa). The appliance must be isolated
from the gas supplyby closing its individual
manual shut-off valve during any pressure testing
of the gas supplypiping system at test pressures
equal to or less than ½ PSI (3.45 kPa).”
2. Gas Supply Connections
WARNING
THIS UNIT IS FOR COMMERCIAL USE. NEVER
USE HOME OR RESIDENTIAL GRADE GAS
CONNECTIONS. THEY DO NOT MEET GAS
CODES AND COULD BE HAZARDOUS.
Connect to the gas supply using ¾ NPT pipe or
an approved equivalent. Although the immediate
connection to the Convection Combo™ is ¾
NPT, the gas supplypiping must be large enough
to provide 93,000 BTU/hour for each CC10
cooking chamber or 186,000 BTU/hour for each
CC20 cooking chamber. Supplypressure must
be at least 5" W.C. (maximum 14" W.C.) for
natural gas or 12" W.C. (maximum 14" W.C.) for
LP gas. In Canada, the installation must
conform to the Canadian Gas Code, CAN 1-
B149, Installation Codes for Gas Burning
Appliances and Equipment, and/or local codes.
For units on casters,complete the gas supply
connection using only connectors that meet the
standards for movable gas appliances, ANSI
Z21.69 — latest edition. Restrainmovement of
the unit by attaching a cable or chain to the
eyelet(provided at the backof the frame) and
anchoring the cable orchainto the wall or floor.
Make the length and location of the cable such
that the unit cannot pull on the gas connection
while the cable is connected.
3. Electrical Supply Connection
For a single oven, or for each oven ina double
stacked unit, provide 115 VAC, 60 Hz, one
phase, 15 AMP service. Local codes and/orthe
National Electrical Code should be observed in
accordance with ANSI/NFPA 70-1987 (or latest
edition). AN ELECTRICAL GROUND IS
REQUIRED. The electrical schematic is located
in the service compartment and this manual.
Maximum load per oven is 5½ AMPs. In
Canada provide electrical service in accordance
with the Canadian Electrical Code, CSA C22.1
Part 1, and/or local codes.

OM-CC-G
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4. Water Supply Connection
A check valve (anti-siphonage device) mustbe
installed in the incoming cold water line in
keeping withlocal plumbing codes. Waterline
pressure should be between30 and 60 PSI (210
and 410 kPa). A pressure regulatoris required
above 60 PSI (410 kPa).
A ¾ inch (19 mm) NH connector is required to
connect the water supply to the water inlet valve.
The waterfeed line diametermay not be less
that ½ inch (13 mm). Use a washer (or if
necessary, two washers) inthe hose connection.
Do not allow the connection to have any leak, no
matter how small.
If youhave aCC10-G which is equipped withthe
optional split water supply, the steam generator
supply must be able to fill the generator with 3
gallons (11.4 liters) of water in 5 minutes. The
make-up waterrate is 0.06 gallons per minute
(0.2 liters per minute). Condensate spray water
rate is 0.34 gallons per minute (1.3 liters per
minute) at 30 PSI (210 kPa). These
requirements apply to each steam generator in
model (2)CC10-G.
If youhave aCC20-G which is equipped withthe
optional split water supply, the steam generator
water supply must be able to fill the generator
with 5 gallons (19 liters) of water in 5 minutes.
The make-up waterrate is 0.12 gallons per
minute (0.45 liters per minute). Condensate
spray water rate is 0.7 gallons per minute (2.6
liters per minute) at 30 PSI (210 kPa). These
requirements apply to each steam generator in
model (2)CC20-G.
4. Drain Connection
a. Unit Without Drain Tank
A 1½ inch (4 cm) ID (CC10-G) or 2 inch (5
cm)ID hose (CC20-G)may be attached to
the supplied drainoutlet witha clamp. Do
not use plastic pipe,because the drain must
withstand very hot water.
WARNING:
DO NOT CONNECT THE OVEN DRAIN DIRECTLY
TO A BUILDING DRAIN.
There must be a free air gap between the
end of the hose and the building drain. The
free airgap should be as close as possible
to the unit’s drain. There must also be no
other elbows or other restrictions between
the unit drainand the free airgap.
CAUTION
DO NOT USE PLASTIC PIPE. DRAIN MUST BE
RATED FOR VERY HOT WATER.
WARNING
BLOCKING THE DRAIN IS HAZARDOUS.
Ona double stacked unit,there mustbe a
minimum of two inches free air gap oneach
drain, as close to each oven as possible.
Double stacked units may only share a
common drain hose downstream of both
free air gaps.
Install the drain line with a constant
downward pitch.
IMPORTANT: Do not allow any water traps in the
line. A trap can cause pressure to build up
inside the cavity during steaming, which will
make the door gasket leak.
NOTE: Improper drain connection will void the
warranty.
b. Units With Drain Tank
A hose maybe attached to the supplied
drainelbowwitha clamp. Use 1½ inchID
hose for CC10-G or 2" ID hose for CC20-G.
The hose may be connected directlyto a
building drain since the drain tank has an air
vent, whicheliminates the need for a free air
gap at the building drain.
Do not block the air vent in any way. Do not
attach anything to the vent tube or reduce its
size.
Do NOT use plastic pipe inthe drainline,
because the drain must withstand very hot
water.

OM-CC-G
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Convection Combo™ Utility Connections
NOTE: Remove right side panel to make connections
at terminal block in rear of control compartment.

OM-CC-G
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Proper Drain Line Connections

OM-CC-G
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Initial Start-Up
WARNING
ANY POTENTIAL USER OF THE EQUIPMENT SHOULD BE TRAINED IN SAFE AND CORRECT OPERATING
PROCEDURES.
After the ConvectionCombo™ has been installed,
test it to ensure that it is operating correctly.
1. Remove all literature and packing materials from
the interior and exterior of the unit.
2. Check that the cold water supply line is open and
that the fittings are not leaking.
3. Make sure that the gas supplyline is open. On
newer units, turn the knob of the main gas valve
so that it is lined up with the pipe. On older units
turnthe maingas valve knob to the “On” position.
(See illustration at the bottom of this page)
4. Turnon electrical
service to the unit.
Because the unit will
not operate without
electrical power, no
attempt should be
made to operate the
unit in the event of a
power failure.
5. The control panel
will not operate until the
pilot burner has been
ignited. To light the pilot burner, activate the pilot
switch located next to the main gas valve. Once the
pilot ignitionsequence has been successfully
completed, a green light will glow, and power will be
supplied to the front panel.
6. The “trial for ignition” period is roughly 90
seconds. If the pilot burner does not light within
90 seconds of pilot switch activation, the ignition
system automatically stops the gas flowto the
pilot burner and cancels the ignition trial. If the
ignition trial is terminated, turn off the pilot switch
and repeatthe trial for ignition. During initial
start-up, the pilot may require several trials in
order to bleed airfrom the gas piping.
Subsequent start-up should onlyrequire about
five seconds to achieve ignition.
NOTE: See Automatic Operation of Pilot at the end
of this section.
7. Once the pilotburner flame has been established
(the green light at the pilot switch is on), all
operatorcommands are executed viathe front
control panel touch pads. See the Operation
section for details.
8. High Altitude Operation. At altitudes above
5,000 feet (1524m), the unit will not operate in
the Steameror Combo Modes unless the altitude
is set. You can program the altitude as follows:
a. If the unit is on, turn it off by pressing the ON
touch pad.
b. Press and hold the STEAM touch pad while
turning the unitonbypressing the ON touch
pad. The Timer Display will show the letters
AL and a number representing the altitude in
thousands of feet. If the altitude has not
been set for your unit, the display will be 0.
c. Enteran altitude value between0 and 15,
using the numbered touch pads. For
example, if the unit will be operating at 7,000
feet, enter 7.
d. Press the START touch pad.
Altitude Metric Conversion
Altitude Setting
Feet Meters
5000 1524 5
6000 1830 6
7000 2133 7
8000 2438 8
9000 2745 9
10000 3048 10
11000 3353 11
12000 3658 12
13000 3962 13
14000 4267 14
15000 4572 15
9. Select Fahrenheit or Celsius Temperatures.
The ConvectionCombo™ is delivered withthe
Fahrenheit scale as default. To change the
temperature scale, hold the 5 key in, and press
ON. The Timer Display will show dEG°F or
dEG°C. Press the 5 keyto change from one to
the other. Press START to accept the change.

OM-CC-G
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These controls are behind the sliding door on the right side panel, facing the unit.
10. To Test Steamer Mode Operation, turn on the
unit. (Foroperating procedure details, see the
Operation section of this manual.) Clear time
from the time display. Close the door and press
the STEAM touch pad. (If the HOT light is on,
see Fast Coolinthe Operationsection.)
The WAIT light will stay on while the steam
generator fills with and heats the water. It
should turn off within three minutes, and the
READY light should come on. This indicates that
the water is at its standby temperature. The
timeronlycontrols operations in the Steamer
Mode. Entera time and press START. (“Time”
is set in minutes and hours only. Seconds are
not displayed).
Examples: 2 minutes = 00:02
(Just press 2).
1 hour and 30 minutes =01:30
(Press 1, 3, and 0, or press 9,0 the
timer will change to 1:30)
The colon [:] between the numbers will blink and
the generator will beginto produce steam. Time
only counts down when the READY light is lit.
NOTE: You cannot change modes if the timer is
running.
WARNING
WHEN YOU OPEN THE DOOR, STAY AWAY
FROM STEAM COMING OUT OF THE UNIT.
THE STEAM CAN CAUSE BURNS.
8. To Test Combo Mode Operation, turn on the
p
o
w
e
r
a
nd clear any time from the timer display. Press the
COMBO touch pad. Set the COOK temperature to
350oF (175oC). The WAIT light will come on. It will
remain on while (1) the steam generator fills with
water and heats it to its standby temperature and (2)
the air heater raises the airtemperature to 350oF.
Bothactions should be completed in five to eight
minutes, starting with a cold unit. When the set
temperature is attained, the WAIT light will go off,
and the READY light will come on. NOTE: The timer
does not control the ovenineither the Combo or
Oven Modes.
10. To Test Oven Mode Operation, turn on the
power and clear the timer display. Press the
OVEN touch pad. Set the cook temperature to
350oF (175oC). The WAIT light will come on.
Within eight minutes of a cold start, the WAIT
light should go out and the READY light come on.
When that happens, turnthe COOK setting down
to 320oF (160oC). The HOT light will come on.
Heat-up times may vary slightly with voltage or
water pressure differences.
11. To shut down the unit, first clear the timer. Next,
press the mode pad for the mode inwhichthe
unit is operating. Finally, switchoff the power.
The pilot burner mayalso be turned off to
conserve energy.
12. If the Convection Combo™ works as described,
the unit is functioning correctly and is ready for
use.

OM-CC-G
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Operation
WARNING
ANY POTENTIAL USER OF THE EQUIPMENT SHOULD BE TRAINED IN SAFE AND CORRECT OPERATING
PROCEDURES.
DO NOT OPERATE THE UNIT AT ALL, UNLESS ALL FOUR REMOVABLE PARTITIONS HAVE BEEN
RETURNED TO THEIR PROPER LOCATION.
DO NOT OPERATE THIS EQUIPMENT WITHOUT ELECTRIC POWER.
NOTE: Before the control panel can be used, the pilotburner flame must be on. See “Initial Start-Up.”
A. Controls and Indicators
Operator controls are onthe right front side of the
unit. Theiruse is described below:
1. Time Section
In Ovenand Combo Modes, the timer functions
onlyas a “cooking time minute minder” and does
not turn the unit on or off. In the Steamer Mode,
however, it controls the steaming function.
a. Display Window — Shows operating time
remaining inthe Steamer, Ovenor Combo
Mode. The timer counts down.The
windowshows operating time in
“hours:minutes” format. For example,
entering 9 and 0 will result in a display of
01:30. (On some older units numbers higher
than 59 will not be accepted - in these
cases, convert the time to hours and
minutes. 90 minutes is entered 1,3, 0.
b. Time touch pads — used to entertime
values.
c. CLEAR — Pressing this touch pad once
stops the beeper and resets the timerto the
time that was last set. Pressing twice clears
it to 00:00. At the end of a cooking period,
opening the door is the same as pressing
CLEAR once.
d. START — Press this touch pad to start the
timer. If the unit is inSteamer Mode, it will
also cause steaming to begin.
2. Status Lights
a. HOT — Indicates chamber temperature is
more than 15oF (8oC) over the set
temperature. (See Paragraph5 inthis
section)
b. SERVICE — Indicates that there is a
problem whichmight require aservice call.
If there is such a problem the beeper will
sound and the SERVICE light will be on when
youswitchon the power. The unit may
continue to operate,depending onthe type
of problem. Refer to the Troubleshooting
sectionto determine the nature of the
problem.
c. WAIT — Indicates the unit is either heating
or cooling toward the set temperature. The
HOT and WAIT lights will both be on if the
chamber is more than 15oF (8oC) above the
set point.
d. READY — Indicates the unit is ready for use.
3. Cooking Mode Selection
These touch pads are used to select the mode of
operation. If a mode is off, pressing the pad for
that mode will turn it on. If the mode is on,
pressing its pad will turn it off. A light just above
each pad showwhichhas been selected.

OM-CC-G
14
Operation
Standard Operating Controls

OM-CC-G
15
a. STEAM — Selects steamer operation only.
b. COMBO — Selects superheated steam and
convectionovenoperation.
c. OVEN — Selects convection oven operation
only.
4. Power
The ON touch pad turns the unitonor off. When
power is on, the ON light just above the touch
pad is lit. Use of this pad does not reset the
controls. The unit will always come on in the
same mode it was in whenshut down.
5. Temperature (TEMP) Section
a. The Temperature Display Window shows the
selected temperature in either Ovenor
Combo Mode. It is blankinthe Steamer
Mode.
b. Turning the Temperature Control Knob
selects the cooking temperatures in5oF
increments. The control ranges are:
Oven Mode 200-575oF (95-300oC)
Combo Mode 220-575oF (105-300oC)
B. Operating Instructions
1. Steamer Mode
a. If the unit is off, switchon the electric power
by pressing the ON touch pad. (If the
SERVICE light comes on when you turn on
the power, see the Troubleshooting section).
b. If the poweris already on, and there is a
number in the time display window, press the
CLEAR touch pad one or more times to
reset the time to zero.
NOTE: You cannot change operating modes
while the timer is running
c. The unit will be in the mode of operationin
which it was last used. Because of this, the
indicator light for that mode will be lit. If the
unit is not already inthe Steamer Mode,
press the STEAM touch pad. The STEAM
light will come on and the Temperature
Window will go blank.
d. If the unit was recentlyused inOven or
Combo Mode, the HOT light may come on,
indicating that the cooking chamber is too hot
for use as a steamer. The unit can be
cooled quicklyto the steaming temperature
range by leaving the door open or following
the Fast Cool procedure described near the
end of this section (Paragraph 5). With the
door open, the generator can fill and heat the
water to 200oF (93oC), but it cannot produce
steam.
WARNING
WHEN YOU OPEN THE DOOR STAY AWAY
FROM ANY STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.
e. The WAIT light will be on until the water
reaches 200oF (93oC). It will then turn off
and the READY light will come on. You are
now ready to steam foods in your Convection
Combo™.
f. Load the food into pans inan even, uniform
layer.
g. Carefully open the doorand slide the pan or
pans onto the panracks inthe cooking
chamber. If youare onlyusing one pan,
place it inthe middle position. Close the
door.

OM-CC-G
16
h. Press the numbered touch pads to set the
cooking time. The time will appear inthe
Time Display Window. If you enter the
wrong number, press the CLEAR touch pad
to erase the time from the display, and enter
the time again.
i. When the correct cooking time has been
entered, press the START pad. The colonin
the display will blink and the time will count
down the cooking time. (The unit must be
READY before the timercancount down.
j. If youopenthe door during the cooking
period, steaming and the timer will stop (but
will not reset). When you close the door,
steaming and timing will continue.
WARNING
WHEN YOU OPEN THE DOOR STAY AWAY
FROM ANY STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.
k. When the timer reaches zero, it stops steam
generation and sounds a beeper. Water in
the steam generatorstays at its standby
temperature (200oF - 93oC). Onolder
models, the beeper will sound until the door
is opened or CLEAR is pressed.
l. Carefully openthe door. If the food is
cooked,remove the pans using hot pads or
oven mitts to protect your hands.
m. Afterthe display has counted down to zero
opening the door or pressing CLEAR once
will reset the display to the time that was last
used. Pressing START will repeat the cook
cycle. If the same cooking time will be used,
youonly need to press the number keys
when you first set that time.
n. Afterthe displayhas counted down to zero
you can reset the time to zero by either (1)
opening the door and pressing CLEAR or
pressing CLEAR twice. A newcooking time
may then be set by using the number keys.
2. Oven Mode
a. To use the Convection Combo™ as a
convectionoven, switch onthe electric power
by pushing the ON touch pad. (If the
SERVICE light comes on when you turn on
the power, see the Troubleshooting section).
If the dooris closed and the cooking
temperature is above 200oF (93oC) the fan
will beginto operate.
b. If the poweris already on, and there is a
number in the time display, press CLEAR
one or more times to reset the time to zero.
NOTE: You cannot change operating modes
while the timer is running
c. The unit will power up in the mode inwhichit
was last used. Because of this, the indicator
light for that mode will be lit. If the unit is not
already inthe Oven Mode, press the OVEN
touchpad. The OVEN light will come on and
the oven fan will operate.
d. Use the Temperature Control Knob to setthe
desired cooking temperature, whichwill
appear inthe temperature display. Unless
the cooking chamber is already at or above
the selected temperature, the unit will start
heating and the WAIT light will come on.
e. If the unit was recently used at a
temperature 15oF (8oC) or more over the
selected temperature, the HOT and WAIT
lights will come on. The unit can be cooled
quicklyto the desired cooking temperature
by leaving the dooropen or following the
Fast Coolprocedure described nearthe end
of this section (Paragraph 5).
f. The READY light will indicate when the oven
is atthe desired temperature.
g. Load the food into the pan or pans ina
uniform layer.

OM-CC-G
17
h. The Convection Combo™ will operate in
Oven Mode with the timer either on or off. If
you want to time cooking, press the
numbered pads inthe TIME portionof the
control panel to set the cooking time. The
time will appear in the Time Display . If you
enterthe wrong number, press CLEAR to
erase the time from the display, and reenter
the time. Remember that the timer does not
control the unit inthe Oven Mode.
i. Openthe door and slide the panor pans
onto the panracks inthe cooking chamber.
If youare onlyusing one pan, place itinthe
middle position. Close the door.
j. If the correct time has been set on the
timer, press the START pad. The colon [:]
between the numbers in the display will blink
and the time will count down the cooking
time. When the timer has counted down to
zero, it will sound a beeper. This sound will
continue until the door is opened or the
CLEAR pad is pressed.
k. To stop cooking, take the pans out of the
ovenusing hot pads or oven mitts to protect
your hands from the hot pans. The unit will
continue heating to keep the chamber at the
set temperature until the temperature control
is reset, or the power is shut off.
WARNING
PANS AND INTERNAL PARTS OF THE OVEN
WILL BE VERY HOT. AVOID CONTACT WITH
HOT SURFACES.
l. Opening the door during operation shuts off
power to the heaters and fan and stops the
timer, but it has no other effect on the
controls. When the door is closed, operation
continues. Note that cooking time will be
extended by the period the door was open.
3. Combo Mode
a. If the unit is off, switchon the electric power
by pressing the ON touch pad. (If the
SERVICE light comes on when you turn on
the power, see the Troubleshooting section).
If the dooris closed and the cooking
temperature is above 200oF (93oC) the fan
will beginto operate.
b. If the poweris already on, and there is a
number in the time display window, press the
CLEAR touch pad one or more times to
reset the time to zero.
NOTE: You cannot change operating modes
while the timer is running
c. The unit will power up in the mode of
operation in whichit was last used. Because
of this, the indicator light for that mode will
be lit. If the unit is not already in the Combo
Mode, press the COMBO touch pad. The
COMBO light will come on and if the steam
generator is not already full, water will flow
into it and beginheating.
d. Use the Temperature Control Knob to set the
desired oven temperature between220 and
575oF (105 to 300oC).The temperature will
appear inthe temperature display window.
e. If the unit was recently used at a
temperature more than 15oF (-8oC) higher
than the temperature selected, the HOT and
WAIT lights will turn on. The unit can be
cooled quicklybyleaving the door openor
following the Fast Cool procedure described
near the end of this section(Paragraph 5).
WARNING
WHEN YOU OPEN THE DOOR STAY AWAY
FROM ANY STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.
f. The WAIT light will be on until the water in
the steam generator reaches boiling and the
airin the cooking chamber reaches the set
temperature. It will then turn off and the
READY light will come on to indicate that the
ovenis at the desired temperature.
g. The unit will operate in Combo Mode withthe
timer either on or off. If you want to time the
cooking, press the numbered pads inthe
TIME portion of the control panel to set the
cooking time. The time will appear inthe
Time Display Window. If you enter the
wrong number, press the CLEAR touch pad

OM-CC-G
18
to erase the time from the display, and enter
the time again. The timer does not control
the unit in Combo Mode.
h. Load the food into the panor pans ina
uniform layer.
WARNING
WHEN YOU OPEN THE DOOR STAY AWAY
FROM ANY STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.
i. Openthe door and slide the panor pans
onto the panracks inthe cooking chamber.
If youare onlyusing one pan, place itinthe
middle position. Close the door.
j. If the timer has been set,press the START
pad. The colon [:] between the numbers in
the display will blink and the time will count
down the cooking time. Whenthe timerhas
counted down to zero, it will sound a beeper.
This beeping will continue until the door is
opened or the CLEAR pad is pressed.
k. To stop cooking, take the pans out of the
ovenusing hot pads or oven mitts to protect
your hands from the hot pans. The unit will
continue steaming and heating the oven at
the set temperature until the temperature
control is reset, or the power is shut off.
4. Fast Cool
a. Whenthe HOT indicator is lit and the timer is
cleared,the unitcanbe cooled quicklyby
opening the door and pressing START. The
fan will operate, and the TIME window will
display the word “COOL.” This is the only
time the fan operates with the door open.
WARNING
DO NOT PUT HANDS OR OTHER OBJECTS
INTO THE COOKING CHAMBER DURING THE
FAST COOL OPERATION. THE ROTATING FAN
CAN BE HAZARDOUS.
b. To stop the Fast Cool operation,press any
touch pad or close the door.
6. Shutting Down
a. Press the touch pad for the mode inwhich
the unit is operating.
b. Switch off the power by pressing the ON
touch pad.
Leave the door at least partially open, if local
sanitationregulations permit.

OM-CC-G
19
Cleaning
To keep your Convection Combo™ inproper operating conditionand to make the cleaning process easier, cleaning
should be a daily activity.
A. Suggested Tools and Cleaners
1. Mild detergent
2. Stainless steel exterior cleaner such as
Zepper®
3. Steam generator de-liming agent, such
as Groen Delimer Descaler, (P/N
114800) Lime-A-Way® or an equivalent.
A liquid de-liming agent will be easier to use
than crystals or powders. See the warning
about chlorides below.
4. De-greaser, such as EncompasS®,
Groen Degreaser, Malone 34®, Puritan
Puribrute®, or Con-Lie®
5. Cloth or sponge
6. Plastic wool or a brush with soft bristles
7. Spray bottle
8. Measuring cup
9. Nylon pad
10. Towels
11. Plastic disposable gloves
B. Procedure
1. Exterior Cleaning
a. Prepare awarm solution of the mild
detergent as instructed by the supplier.
Wet a cloth with this solution and wring it out.
Use the moist cloth to clean the outside of
the unit. Do not allow freely running liquid to
touch the controls, the control panel, any
electrical part, or any open louver.
b. To remove material which may be stuck to
the unit, use plastic wool, afiber brush, or a
plastic or rubber scraper witha detergent
solution.
c. Stainless steel surfaces maybe polished
with a recognized stainless steel cleaner
such as Zepper®.
C. Single CC10-G Units
NOTE: For instructions about cleaning the interior of
double-stacked CC10-G units or any CC20-G units,
go directly to Section D, below.
PRECAUTIONS
WARNING
DISCONNECT THE POWER SUPPLY
BEFORE CLEANING THE OUTSIDE OF
THE UNIT.
KEEP WATER AND CLEANING
SOLUTIONS OUT OF CONTROLS AND
ELECTRICAL COMPONENTS. NEVER
HOSE OR STEAM CLEAN ANY PART OF
THE UNIT.
BE CAREFUL CLEANING THE TOP FLUE
COVER AND THE OVEN TOP. BOTH
AREAS MAY BE VERY HOT.
DON’T MIX DE-LIMING AGENTS (ACID)
WITH DE-GREASERS (ALKALI)
ANYWHERE INTHE UNIT
AVOID CONTACT WITH ANY CLEANERS,
DE-LIMING AGENT OR DE-GREASER AS
RECOMMENDED BY THE SUPPLIER.
MANY ARE HARMFUL. READ THE
WARNINGS AND FOLLOW THE
DIRECTIONS!
EVEN WHEN THE UNIT HAS BEEN SHUT
OFF, DON’T PUT HANDS OR TOOLS INTO
THE COOKING CHAMBER UNTIL THE FAN
HAS STOPPED TURNING.
DON’T USE ANY CLEANING OR DE-
LIMING AGENT THAT CONTAINS ANY
SULFAMIC AGENT OR ANY CHLORIDE,
INCLUDING HYDROCHLORIC ACID (HCl).
TO CHECK FOR CHLORIDE CONTENT
SEE ANY MATERIAL SAFETY DATA
SHEETS PROVIDED BY THE CLEANING
AGENT MANUFACTURER.
UNIT MAY BE HOT. TAKE PRECAUTIONS
TO PREVENT CONTACT WITH HOT
SURFACES.
To clean the cooking chamber and/or de-lime the steam
generator of the CC10-G, aspecial sequence of
operations (the Clean Cycle) has been programmed into
the ConvectionCombo™ computer. To run this
automatic Clean Cycle for cleaning, de-liming or both
actions at the same time, follow the instructions outlined
in the following table.

OM-CC-G
20
This table refers to the paragraphs whichfollowit.
Clean Cooking
Chamber Only De-Lime Steam Generator Only Clean Chamber and De-Lime Generator
Omit steps 2 & 4 Omit steps 1 & 3 Perform all steps in
order
Before beginning this procedure, cool the over to
200ºF (90ºC) or lower. Close the door, put the unitin
the Oven Mode, and select 200ºF. If the HOT light is
on, use the Fast Cool Mode to cool the ovenuntil the
HOT light goes off. If the HOT light does not come
on, open the door immediately to shut off the
burners. Once the HOT light is off, you may proceed
safely.
WARNING
UNIT MAY BE HOT. DO NOT TOUCH HOT
SURFACES.
DO NOT PUT HANDS OR OTHER OBJECTS
INTO COOKING CHAMBER WHILE CONVECTION
COMBO™ IS OPERATING. THE ROTATING FAN
CAN BE HAZARDOUS.
a. Step 1 - Cooking Chamber
Cool/reduce the oven to the desired
temperature, as described above. Follow
the oven cleaner supplier’s instructions.
Take the unit out of OvenMode by clearing
the timer and pressing the OVEN touch pad.
Enter “99" into the timer. The timer window
will display “CC” or “CL.”
b. Step 2 - De-liming:
Take the unit out of all modes. (If it’s ina
cooking mode, stop the timerand press the
appropriate mode’s touch pad. Enter99 on
the timer. (The ovendoor may be openor
closed).
NOTE:You must wait at least two minutes, or until
the steam generator begins to fill, before you
add de-limer solution.
Remember, if the HOT light is on, use the
Fast Cool method to reduce the
temperature.
The timer display will show “CC” or “CL.”
c. Step 3 - Cooking Chamber
WARNING
BEFORE REACHING INTO THE OVEN TO
REMOVE PARTITIONS, EXIT THE FAST COOL
MODE BY PRESSING ANY BUTTON OR BY
CLOSING AND REOPENING THE DOOR. DO
NOT REACH IN THE OVEN UNTIL THE FAN HAS
STOPPED MOVING.
OVEN MAY BE HOT — WEAR GLOVES OR USE
OVEN MITTS TO AVOID BURNS.
DO NOT OPERATE THE UNIT IN ANY MODE
UNLESS ALL FOUR REMOVABLE PARTITIONS
HAVE BEEN RETURNED TO THEIR PROPER
LOCATIONS.
1) Remove the oven racks and the left, right,
top and bottom partitions inorder. Use a
glove if the ovenis hot. To remove
partitions:
Left — The left partitionincludes aback
plate and an air distribution baffle. Lift up to
disengage the four hooks from their support
posts and remove the partition from the
chamber.
Right — The right partitionincludes a large,
circular, flared opening that is centered in
front of the fan. Push upward to disengage
the four hooks from their support posts and
remove the partitionfrom the chamber.
Bottom — The bottom partition has a small
circular pattern of drain holes. Lift it directly
up and off from its four support posts.
Top — The top partition is flat and has no
holes. Remove it by pushing upward, then
pushing from left to right to disengage the
four hooks to their support posts.
2) Make sure to clean all food particles out
of the drain. Following the oven cleaner
supplier’s instructions, apply cleaner to the
ovenwalls and heat exchange tubes. Apply