Groen CC40-E Installation Manual

OPERATOR MANUAL
MODEL: CC40-E

Combo SuperSystem 40™
Combination Steamer-Oven

OM-CC40-E

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 THIS OF ANY OTHER
APPLIANCE.

Table of Contents

OPERATOR WARNINGS..........................................................................1

EQUIPMENT DESCRIPTION................................................................. 2, 3

WATER CONDITIONING...........................................................................4

INSTALLATION.............................................................................5, 6, 7, 8

INITIAL START-UP ...................................................................................9

OPERATION....................................... 10, 11, 12, 13, 14, 15, 16, 17, 18, 19

CLEANING & MAINTENANCE

CLEANING................................................................20, 21, 22, 23, 24

MAINTENANCE.............................................................................. 25

DIAGRAMS & SCHEMATICS ............................................................26, 27

TROUBLESHOOTING............................................................................. 28

TROUBLESHOOTING GUIDE................................................................. 29

REFERENCES....................................................................................... 30

SERVICE LOG ....................................................................................... 31

NOTES................................................................................................... 32

WARRANTY........................................................................................... 33

IMPORTANT READ FIRST IMPORTANT

WARNING: BE SURE ALL OPERATORS READ, UNDERSTAND, AND FOLLOW THE

DANGER: ELECTRICALLY GROUND THE UNIT AT THE TERMINAL PROVIDED. FAILURE TO

WARNING: THE UNIT MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH

TO PERSONNEL AND/OR DAMAGE TO THE EQUIPMENT. THE UNIT MUST BE

WARNING: STEAM CAN CAUSE BURNS. AVOID ESCAPING STEAM WHEN OPENING DOOR.
WARNING: STAY AWAY FROM HOT AIR THAT COMES OUT AS DOOR IS OPENED.

WARNING: DO NOT PUT HANDS OR OTHER OBJECTS INTO THE COOKING CHAMBER

WARNING: BEFORE CLEANING THE OUTSIDE OF THE UNIT OR REMOVING ANY PARTITION
OR PANEL, ALWAYS SWITCH OFF THE ELECTRIC POWER. BEFORE WORKING

WARNING: KEEP WATER AND SOLUTIONS OUT OF ALL CONTROLS AND ELECTRICAL
COMPONENTS. NEVER HOSE OR STEAM CLEAN ANY PART OF THE UNIT.

OPERATING INSTRUCTIONS, CAUTIONS, AND SAFETY INSTRUCTIONS
CONTAINED IN THIS MANUAL.

GROUND THE UNIT COULD RESULT IN ELECTROCUTION AND DEATH.

ELECTRICITY AND PLUMBING. IMPROPER INSTALLATION CAN CAUSE INJURY

INSTALLED IN ACCORDANCE WITH ALL APPLICABLE CODES.

DURING FAST COOL OPERATION. ROTATING FAN CAN BE HAZARDOUS.

ON ANY ELECTRICAL COMPONENT, DISCONNECT THE POWER SOURCE FROM
THE UNIT.

WARNING: DO NOT TRY TO CLEAN THE COOKING CHAMBER WHILE IT IS HOT FROM
OPERATION IN THE OVEN OR COMBO MODE. SEE THE FAST COOL

WARNING: DO NOT MIX DE-LIMING AGENT (ACID) AND DEGREASER (ALKALI) IN THE
STEAM GENERATOR OR ON THE COOKING CHAMBER WALLS. REFER TO

WARNING: BEFORE YOU REACH INTO THE OVEN TO REMOVE PARTITIONS, EXIT THE FAST

UNTIL THE FANS HAVE STOPPED MOVING.
WARNING: AVOID ALL DIRECT CONTACT WITH HOT EQUIPMENT SURFACES. DIRECT SKIN

CAUTION: TAKE PRECAUTIONS TO AVOID CONTACT WITH ANY CLEANER, DE-LIMING

CLOTHING. CAREFULLY READ THE WARNINGS AND FOLLOW THE DIRECTIONS

INSTRUCTIONS IN THE OPERATION SECTION OF THIS MANUAL.

MANUFACTURERS INSTRUCTIONS.

COOL MODE AND SWITCH OFF THE POWER. DO NOT REACH IN THE OVEN

CONTACT COULD RESULT IN SEVERE BURNS.

AGENT, OR DEGREASER, AS RECOMMENDED BY THE SUPPLIER. MANY
CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS MEMBRANES, AND

ON THE LABEL OF THE CLEANING AGENT.

1

Transport Cart

Electric Combo SuperSystem 40

Pan Rack

Transport Cart With Pan Rack Locked
In Place For Loading Etc.

Combo SuperSystem 40 With Cart And
Rack In Loading Position

2

Equipment Description

The Groen Convection Combo™ consists of a stainless steel cooking chamber, an air heating
compartment with electric heating elements and dual fans, a steam generator with electric heating
elements, and a control compartment housing electrical components.

All major components of the Convection Combo are encased in a 16 gauge stainless steel cabinet. Glass
fiber insulation, 1 to 2 inches thick, lines the cabinet.

The oven has a double door with two large, tempered glass windows in each door. Oven viewing lights are
mounted between the inner and outer doors. Separate hinges allow easy access to the space between the
doors for window cleaning and light fixture maintenance. A condensate collection tray at the bottom diverts
condensate to the oven drain. An optional solid door is available. The solid door does not provide viewing
lights.

All operator controls are on the front panel. Standard controls permit the Convection Combo to operate in
four modes:

1. As a convection oven

2. As a self-contained, pressureless steamer

3. As a combination oven-steamer

4. With the meat probe operating

Cooking chamber capacity:

28 Steam table pans (12 x 20 x 2-1/2"), or 20
Bake pans (18 x 26"), or 40 Gastronorm pans
(1/1)

All units are supplied on stainless steel legs.
Controls and monitoring displays for cooking time, operating mode, and temperature occupy the control

panel. The upper portion of the panel has a digital time readout and touch pads for setting the time. Below
the timer section are lights to indicate the status of the unit plus touch pads that select the mode of
operation and switch on the power. A digital readout shows the chosen temperature, which is selected with
a dial. Status of the pilot burners is indicated by the lights above the pilot ignition switch, located behind the
sliding door in the front of the unit.

An insulated steam generator is mounted next to the oven. Steam enters the cooking chamber through two
connecting tubes at the top and bottom on the right side of the cavity.

The air heating space, containing the heat exchanger tubes and fans, is separated from the cooking
chamber by removable right-hand and top partitions.

The compartment containing the automatic controls and other electrical components is on the right-hand
side of the unit and is entered by removing the right outside panel or by opening the hinged panel in the
front.

A drain is located in the floor of the cooking chamber. Fluids drain from the floor to the stainless steel drain
pipe outside the oven. This drain pipe includes a spray condenser, which suppresses any steam escaping
from the chamber. The drain assembly includes a built in vent with overflow protection.

The roll-in loading and unloading equipment for Combo SuperSystem 40 consists of the Model CCS "Smart
Cart" and the separate Model CRS rack. When the rack is engaged with the cart, a hand crank raises the
rack for transportation and lowers the rack to position it in the oven. The cart is disengaged from the rack and
removed before the oven door is closed. Design of the system allows the rack to be easily held in and
transferred between reach-in or walk-in refrigerators and freezers, blast chillers, and holding cabinets.

3

Water Conditioning

It is desirable to supply the steamer with water that will not form scale. Scale formation depends on the hardness of
the water and the hours of operation. In a few areas of the United States, the water supply is sufficiently free of
minerals to avoid scale formation. However, most water supplies carry heavy loads of minerals, which will form scale
and possibly cause premature failure of components.

Your local water utility can provide a statement on the scale forming qualities of the water supply. Water
supplied to the boiler should contain not more than 30 parts per million total dissolved solids (TDS) and
should have a pH of 7.0 or higher.

Please follow these simple precautions:

1. Do not rely on "water treaters" commonly sold as scale preventers and scale removers. They do not
work. The only proven way to prevent scale build-up is to feed in water practically free of scale-forming
minerals.

2. If your water supply carries scale-forming minerals, as most water supplies do, run the water through a
properly maintained softener. Exchangeable softener cartridges or a regeneratable softener can be
used. In either case, establish a regular program of exchanging the cartridges or regenerating the
softener. Installing a water meter on the inlet line between the softener and the steamer will give an
accurate check of water consumption and a way of determining when to change the cartridge or
regenerate the softener. By using a softener and operating within the softener's capacity to exchange
minerals, the user will optimize performance and minimize maintenance of the steamer.

3. If you notice a slowing of steam production, have your authorized Groen service representative check
the unit for build-up of scale. Heavy scale will reduce the unit's ability to boil water and can cause a fire
tube in the steam generator to overheat and burn out.

TO MINIMIZE SCALE PROBLEMS, USE AND PROPERLY MAINTAIN A SOFTENER, AND CLEAN
THE STEAM GENERATOR PERIODICALLY OR AS NEEDED.

4

A. Mounting

WARNING:

THE UNIT MUST BE INSTALLED

INSTALLATION CAN CAUSE

INJURY

TO PERSONNEL AND/OR

THE UNIT MUST BE INSTALLED IN

DANGER:

ELECTRICALLY GROUND THE UNIT AT THE TERMINAL PROVIDED.

Installation

NOTICE:

Do not install a unit in these locations:

• Where the right side vents are blocked or within 6 inches (15 cm) of any
combustible material or within 12 inches (31 cm) of a heat source, like a
braising pan, deep fryer, char broiler, or kettle.

• To the left of any open-flame equipment.

• With less than 7 inches (18 cm) of clearance at the rear.

To avoid drainage problems, level the unit front-to-rear, or provide a slight pitch to the rear. Maintain a
minimum 8-1/2 inch (22 cm) clearance between the cabinet and the floor (Figure 2), to permit proper
operation of the cart.

BY PERSONNEL QUALIFIED TO
WORK WITH ELECTRICITY AND
PLUMBING. IMPROPER

DAMAGE TO THE EQUIPMENT.

ACCORDANCE WITH ALL
APPLICABLE CODES.

B. Electrical Supply Connection

Local codes and/or the 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 in this manual. In Canada, provide electrical service in
accordance with the Canadian Electrical Code, CSA C22.1
Part 1, and/or local codes.

FAILURE TO GROUND THE UNIT COULD RESULT IN ELECTROCUTION
AND DEATH.

1. Panel Removal
The wiring and the control compartment are accessed by removing the right side panel. Remove

one screw at the back of the panel, then slide the panel toward the front of the unit. Set the panel
aside.

2. Supply Voltage
The CC40-E must operate at the rated nameplate voltage ±10%.

3. Terminal Block
The terminal block for incoming power is located at the back of the control compartment. The

ground terminal is located below the terminal block. The unit must have a separate ground wire
for safe operation. Minimum size of the ground wire is 6 AWG (4.5 mm) for a 200 Amp circuit or 8
AWG (3.5 mm) for a 100 Amp breaker.

5

Installation (cont'd)

(3

Phase)

4. Supply Wire
To determine the type of wire needed for the power supply, find the operating voltage from the

back data plate. Refer to the "Electrical Supply Connection" label on the back of the unit for
correct wire size and insulation temperature rating.
The specified wire must be used to meet Underwriters Laboratories and National Electrical Code
requirements.
The knockout hole (Figure 3) is sized for a 2 inch (51 mm) conduit fitting.

CC40-E ELECTRICAL SUPPLY CONNECTION

(All wires are copper only. Reference:

National Electrical Code.)

Voltage Size for 75°C (THWN) Size for 90°C (THHN)

208
240
480 #3 AWG (6 mm) #4 AWG (6 mm)

5. Branch Circuit Protection

It is strongly recommended that each Convection Combo have its own branch circuit protection.

N/A
N/A

2/0 AWG (10 mm)

1/0 AWG (9 mm)

CC40-E CURRENT DEMAND

Voltage Maximum Current per Line

208 155 A 56 KW
240 135 A 56 KW
480 67 A 56 KW

Maximum Power

Each current-carrying conductor must have overcurrent protection. Refer to the label on the rear
of the unit for proper wire size and type. Watertight connections to the unit are required.

6

Convection Combo Utility Connections

7

Installation (cont'd)

C. Water Supply Connection

Two water connections are required. One supplies water to the steam generator (treated water), and the
other is for the condensate spray (untreated water). A back siphonage device (check valve) must be
installed in each incoming cold water line according to local plumbing code. The water line pressure
should be between 30 and 60 PSIG (210 and 410 kPa). A pressure regulator is required above 60 PSIG
(410 kPa). Two 3/4 inch NH (garden hose type) connectors are required to connect the water supply to
the water inlet valves. The minimum diameter of each water feed line is 1/2 inch (13 mm). Use a washer
(or, if necessary, two washers) in the hose connection. Do not allow the connection to have any leak,
regardless of how small.

D. Drain Connection

A hose may be attached to the outlet of the drain by means of a clamp. Use 3" ID hose for CC40-E. The
hose may be connected directly to an atmospherically vented building drain.
The drain has a 2 inch (5 cm) air vent, which eliminates the need for a free air gap at the connection to the
building drain, unless such a gap (Figure 4) is required by local code. Do not block the air vent in any way.
Do not attach anything to the vent tube or reduce the size of the vent tube.
Do NOT use plastic pipe in the drain line, because the drain must withstand boiling water. Install the drain

line with a constant downward pitch. Do NOT create any water trap (Figure 5) in the line.

Proper Drain Line Connection

Figure 4

Improper Drain Line Connection

Figure 5

8