Groen CC-E Operation Manual

IMPORTANT INFORMATION KEEP FOR OPERATOR IMPORTANT INFORMATION

OPERATOR MANUAL	OM-CC-E
Part Number 121015 Rev. A	DOMESTIC
MODEL: CC-E
CONVECTION COMBO™
Combination Steamer-Oven

CC10-E

CC20-EF

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.

Information contained in this document is known to be current and accurate at the time of printing/creation. Unified Brands recommends referencing our product line websites, unifiedbrands.net, for the most updated product information and specifications.

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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, DEEP FRYER,
	CHAR BROILER OR KETTLE.
CAUTION:	LEVEL THE UNIT FRONT TO BACK, OR PITCH 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: WHEN YOU 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 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 FACTORYAUTHORIZED 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.

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Table of Contents

OPERATOR WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 EQUIPMENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 INSPECTION AND UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 WATER CONDITIONING/REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 INSTALLATION AND START-UP INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 SERVICE LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 WARRANTY PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

References

UNDERWRITERS LABORATORIES, INC.	NATIONAL FIRE PROTECTION
333 Pfingsten Road	ASSOCIATION
Northbrook, Illinois 60062	60 Battery March Park
	Quincy, Massachusetts 02269
KLENZADE SALES CENTER	NFPA/70 The National Electrical Code
ECOLAB, Inc.
370 Wabasha	NATIONAL SANITATION FOUNDATION
St. Paul, Minnesota 55102	3475 Plymouth Road
800 328-3663 or 612 293-2233	Ann Arbor, Michigan 48106

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Equipment Description

Your Groen Convection Combo™ has a stainless steel cooking chamber, an air heating compartment with electric heating elements and fan, a steam generator with electric heating elements, and a control compartment which houses other electrical components.

All major components of the Convection Combo™ are encased in a 16 gauge stainless steel cabinet. Glass fiber insulation, lines the cabinet at a thickness of 1½ to 2 inches (4 to 5 cm). A removable drip tray is located beneath the door.

Door hinges are reversible so that doors may open from the left or right side. Operator controls are located on the right side of the front panel.

Standard controls let you to operate the Convection Combo in any one of three cooking modes:

1.As a convection oven

2.As a self-contained, pressureless steamer

3.As a combination oven-steamer

Models CC10-E and CC20-E differ in cooking chamber size and capacity:

CC10-E: 4 steam table pans (12x20x2½”), or 7 half-size (13x18") US baking pans

CC20-E: 10 steam table pans (12x20x2½”), or 9 full-size (18x26") US baking pans

The smaller Convection Combo™ is available as a table-top unit (the single CC10-E). These units are also supplied on a stainless steel stand as models CC10-EF and (2)CC10-EF. The larger Convection Combo™ is always supplied with a stand as the single CC20-EF or the double-stacked (2)CC20-EF.

The Convection Combo™ Family: 1. Model (2)CC20-EF (Full-sized double-stacked unit on rigid stand), 2. Model CC-20-EF (Full-sized single unit on a convenient stand), 3. Model (2)CC10-EF (Double-stacked, stand-mounted, half-pan Combo, 4. Model CC10-EL single four inch leg-mounted. (Also available in tabletop (CC10-E) and stand-mounted (CC10-EF) versions.

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Inspection and Unpacking

Your Convection Combo™ will be completely assembled in a heavy shipping carton or wooden crate, and attached to a skid. 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 staples which might be left in the carton walls.

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 in the back of this manual.

CAUTION

THIS UNIT IS VERY HEAVY. YOU SHOULD GET HELP AS NEEDED TO LIFT THIS WEIGHT SAFELY.

When starting installation, lift the unit straight up off the skid. Check packing materials to make sure loose parts are not discarded with the material.

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 low enough 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 (acidity rating) of 7.0 to 9.0. Please follow these 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 way to prevent scale is to supply the 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 a regenerating system is chosen, a regular exchange schedule is essential.

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 or regenerate the softener. Using a water

softener will provide longer generator life, higher steam capacity, and reduce maintenance requirements.

3.If you notice a slowdown in steam production, have the unit checked for scale build-up. Heavy scale reduces the unit’s ability to boil water, and can even cause heating elements in the steam generator to overheat and burn out.

MINIMIZE SCALE PROBLEMS, BY USING AND MAINTAINING A SOFTENER, AND BY CLEANING THE STEAM GENERATOR REGULARLY.

Groen Convection Combo™ 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.

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Installation and Start-Up

WARNING

THE UNIT MUST BE INSTALLED BY PERSONNEL WHO ARE QUALIFIED TO WORK WITH ELECTRICITY AND PLUM BING. IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO THE EQUIPMENT. THE UNIT MUST BE INSTALLED IN ACCORDANCE 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.

A.MODEL CC10-E

1. Mounting

If you wish to install a Convection Combo™ on top of another, you should obtain a double stacked unit from the factory.

If the unit does not have a factory-installed stand, the installer must provide a table, stand or counter which is strong enough to support the unit. Use of casters is not recommended.

To avoid drainage problems, level the unit front to rear, or provide a slight pitch to the rear.

Bolt the unit to the table, stand or counter top, using the mounting holes in its base.

2.Electrical Supply Connections

a.Panel Removal

The right side panel must be removed to gain access to the wiring and control compartment. Remove the two screws at the bottom of the panel. Slide the panel toward the front of the unit, lift it and set it aside.

b.Supply Voltage

The CC10-E must operate at the rated nameplate voltage, plus or minus 10%.

c.Phase Select Plug (Units manufactured before 1996)

Locate the phase select plug assembly on the wiring harness from the relay board. This assembly is black, blue and red. Refer to the labels located below the motor and above the distribution block for the correct phase connection.

d.Terminal block

The terminal block for incoming power is

located at the back of the control compartment.

WARNING

WHEN CONNECT ING FOR SINGLE PHASE OPERATION, DO NOT CONNECT ANY WIRE TO LINE 3 (THE TERMINAL FARTHEST LEFT). THIS WILL CAUSE A SHORT CIRCUIT.

The ground terminal is found on the relay bracket below the terminal block. The Convection Combo™ must have a separate ground wire for safe operation. The ground wire must be at least 10 AWG (2.6 mm).

e.Supply Wire

The type of wire needed is determined by finding the operating voltage and phase from the unit’s back data plate and (on pre-1996 models) phase select connector. 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 comply with Underwriters Laboratories and National Electric Code requirements.

The knockout hole is sized for a ¾ inch (19 mm) conduit fitting.

CC10-E ELECTRICAL SUPPLY CONNECTION

(All wires copper only. Reference: National Electrical Code)

Voltage	Phase	Wire Size	Insulation

208	1	6AWG (4.1mm)	75oC
208	1	8AWG (3.3mm)	90oC
208	3	8AWG (3.3mm)	75oC
240	1	8AWG (3.3mm)	75oC
240	3	8AWG (3.3mm)	75oC

f.Branch Circuit Protection

Groen strongly recommends that each Convection Combo™ have its own branch circuit protection. A double stacked unit should have separate protection for the upper and lower steamer-ovens.

CURRENT DEMAND

Voltage		Current		Power

	1 Phase		3 Ph., per Line

208	44.7 A		27.5 A	9.3 KW

240	38.8 A		24.1 A	9.3 KW

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

3. Water Supply Connection

A check valve (back siphonage device) must be installed in the incoming cold water line in keeping with local plumbing codes. Water line pressure should be between 30 and 60 PSI (210 and 410 kPa). A pressure regulator is required above 60 PSI (410 kPa).

A ¾ inch (19 mm) NH (garden hose type) connector is required to connect the water supply to the water inlet valve. The water feed line diameter may not be less that ½ inch (13 mm). Use a washer (or if necessary, two washers) in the hose connection. Do not allow the connection to have any leak, no matter how small.

If your CC10-E is equipped with the optional split water supply, the supply for each steam generator must be able to fill the generator with 1½ gallons (5.7 liters) or water in 1½ minutes. The make-up water rate 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).

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4. Drain Connection

a.CC10-E Without Drain Tank (tabletop model)

A 1½ inch (4 cm) hose may be attached to the provided drain elbow with a clamp. Do not use plastic pipe. The drain must withstand boiling water.

WARNING:

DO NOT CONNECT THE 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 air gap should be as close as possible to the unit’s drain. There must also be no other elbows or other restrictions between the unit drain and the two inch free air gap.

CAUTION

DO NOT USE PLASTIC PIPE. DRAIN MUST BE RATED FOR BOILING WATER.

WARNING

BLOCKING THE DRAIN IS HAZARDOUS.

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.CC10-E With Drain Tank

A 1½ inch (4 cm) ID hose may be attached to the supplied drain elbow with a clamp. The hose may be connected directly to a building drain since the drain tank has an air vent, which eliminates 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 in the drain line, because the drain must withstand boiling water.

Drain Tank	Tabletop Model

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Proper Drain Line Connections

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B.MODEL CC20-E

1.Mounting

If you wish to install one Convection Combo™ above another, obtain a double-stacked unit from the factory.

CAUTION

DO NOT INSTALL A CC20-E IN ANY LOCATION WHERE RIGHT SIDE VENTS ARE BLOCKED, OR WITHIN 12 INCHES OF A HEAT SOURCE SUCH AS A BRAISING PAN, DEEP FRYER, CHAR BROILER OR KETTLE.

DO NOT INSTALL THE UNIT TO THE LEFT OF ANY OPEN FLAME EQUIPMENT.

To avoid drainage problems, level the unit front- to-rear, or provide a slight pitch to the rear.

WARNING

T HE UNIT M UST BE INS T AL L E D B Y PERSONNEL QUALIFIED TO WORK WITH ELECTRICITY AND PLUMBING. IMPROPER INST ALLATION CAN CAUSE INJURY T O P E R S O N N E L A N D / O R D A M A G E T O EQUIPMENT.

CAUTION

INSTALLATION MUST BE IN ACCORDANCE WITH ALL APPLICABLE CODES.

2.Electrical Supply Connections

a.Panel Removal

The right side panel must be removed to gain access to the wiring and control compartment. Remove the screw at the back of the panel. Slide the panel toward

the front of the unit, lift it and set it aside.

b.Supply Voltage

The CC20-E must operate at the rated nameplate voltage, plus or minus 10%.

c.Terminal block

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

The ground terminal is found below the terminal block. The Convection Combo™ must have a separate ground wire for safe operation. The ground wire must be at least 8 AWG (3.3 mm) for a 100 amp circuit

breaker or 10 AWG (2.6 mm) for a 40 to 60 amp breaker.

d.Supply Wire

The type of wire needed is determined by finding the operating voltage and phase from the unit’s back data plate and phase select connector. 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 comply with Underwriters Laboratories and National Electric Code requirements.

The knockout hole is sized for a one inch (25.4 mm) conduit fitting.

CC20-E ELECTRICAL SUPPLY CONNECTION

(All wires copper only. Reference: National Electrical Code)

Voltage	Size for 75oC	Size for 90oC (THHN)
Voltage	(THWN)
	(THWN)

208	4 AWG (5.2 mm)	6 AWG (4.1 mm)

240	4 AWG (5.2 mm)	6 AWG (4.1 mm)

480	8 AWG (3.3 mm)	8 AWG (3.3 mm)

e.Branch Circuit Protection

Groen strongly recommends that each Convection Combo™ have its own branch circuit protection. A double stacked unit should have separate protection for the upper and lower steamer-ovens.

CURRENT DEMAND

Voltage	Current per line	Power
Voltage	(Three Phase)	Power
	(Three Phase)

208	65.4 A	21 KW

240	56.7 A	21 KW

480	28.3 A	21 KW

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

3.Water Supply Connection

A check valve (back siphonage device) must be installed in the incoming cold water line in keeping with local plumbing codes. Water line pressure should be between 30 and 60 PSI (210

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and 410 kPa). A pressure regulator is required above 60 PSI (410 kPa).

4.Drain Connection

CAUTION

DO NOT USE PLASTIC PIPE. DRAIN MUST BE RATED FOR BOILING WATER.

WARNING BLOCKING THE DRAIN IS HAZARDOUS.

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.

CC20-E With Drain Tank

A two inch (51 cm) ID hose may be attached to the supplied drain elbow with a clamp. The hose may be connected directly to a building drain since the drain tank has an air vent, which eliminates 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 or reduce its size.

Do NOT use plastic pipe in the drain line, because the drain must withstand boiling water.

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