Groen HY-6G HYPERSTEAM Operator's Manual
OPERATOR MANUAL
IMPORTANT INFORMATION, KEEP FOR OPERATOR
This manual provides information for:
MODEL HY-6G
HYPERSTEAM™
ATMOSPHERIC
CONVECTION STEAMER
· Self Contained
· Gas
· Capacity: 6 Steamer Pans (12” x 20” x 2-1/2”)
THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE.
READ, UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND
WARNINGS CONTAINED IN THIS MANUAL.
WARNING / FOR YOUR SAFETY
Do not store or use gasoline or other ammable 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 o 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.
NOTIFY CARRIER OF DAMAGE AT ONCE
It is the responsibility of the consignee to inspect the container upon receipt of
same and to determine the possibility of any damage, including concealed dam-
age. Unied Brands suggests that if you are suspicious of damage to make a
notation on the delivery receipt. It will be the responsibility of the consignee to le
a claim with the carrier. We recommend that you do so at once.
Manufacture Service/Questions 888-994-7636.
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.
PART NUMBER 141601 REV F (07/14)
1055 Mendell Davis Drive
Jackson, MS 39272
888-994-7636, fax 888-864-7636
unifiedbrands.net
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.
WARNING: BEFORE REMOVING ANY PARTITION OR PANEL, TURN OFF THE ELECTRICAL POWER AND ALLOW
THE FAN TO STOP ROTATING. BEFORE WORKING ON ANY ELECTRICAL COMPONENT DISCONNECT
THE POWER SOURCE FROM THE UNIT.
NOTICE: 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.
NOTICE: LEVEL THE UNIT FRONT TO BACK, OR PITCH IT SLIGHTLY TO THE REAR, TO AVOID DRAINAGE
PROBLEMS.
CAUTION: MAKING ANY ELECTRICAL OR MECHANICAL CHANGE IN THE UNIT WITHOUT PRIOR APPROVAL
FROM GROEN FOOD SERVICE ENGINEERING WILL VOID ALL WARRANTIES.
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 STEAM GENERATOR OR CAVITY DRAIN SCREEN MAY BE HAZARDOUS.
IMPORTANT: IMPROPER DRAIN CONNECTION WILL VOID WARRANTY.
WARNING: WHEN YOU OPEN THE DOOR, STAY AWAY FROM STEAM COMING OUT OF THE UNIT. STEAM CAN
CAUSE BURNS.
WARNING: ALL POTENTIAL USERS OF THE EQUIPMENT SHOULD BE TRAINED IN SAFE AND CORRECT
OPERATING PROCEDURES.
WARNING: NO ATTEMPT SHOULD BE MADE TO OPERATE THIS EQUIPMENT DURING A POWER FAILURE.
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 CHAMBERS 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) IN THE STEAM GENERATOR
OR ON THE COOKING CHAMBER WALLS.
WARNING: DO NOT PUT HANDS OR TOOLS INTO THE COOKING CHAMBER UNTIL THE FAN HAS STOPPED
TURNING.
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IMPORTANT - READ FIRST - IMPORTANT
WARNING: DO NOT OPERATE THE UNIT UNLESS THE REMOVABLE RIGHT SIDE PANELS HAVE BEEN RETURNED
TO THEIR PROPER LOCATIONS.
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: USE NO 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 CAUSE BODILY INJURY TO THE
OPERATOR AND DAMAGE THE EQUIPMENT. SERVICE PERFORMED BY OTHER THAN FACTORYAUTHORIZED PERSONNEL WILL VOID ALL WARRANTIES.
OM-HY/6G 3
Table of Contents
Important Operator Warnings ....................................................page 2-3
References.................................................................................... page 4
Equipment Description.................................................................. page 5
Water Quality and Treatment .......................................................... page 6
Inspection and Unpacking ............................................................ page 7
Installation .................................................................................. page 8-9
Initial Start-Up............................................................................... page 10
Operation ................................................................................ page 11-12
Cleaning.................................................................................. page 13-14
Maintenance................................................................................. page 15
Troubleshooting............................................................................ page 16
Electrical Schematic .................................................................. page 23
Service Log ................................................................................. page 24
References
ZEP MANUFACTURING CO.
1310-T Seaboard Industrial Blvd.
Atlanta, Georgia 30318
NATIONAL FIRE PROTECTION ASSOCIATION
60 Batterymarch Park
Quincy, Massachusetts 02269
NFPA/70 The National Electrical Code
NFPA/54 Installation of Gas Appliances & Piping
NSF INTERNATIONAL
789 N. Dixboro Rd.
P.O. Box 130140
Ann Arbor, Michigan 48113
CSA INTERNATIONAL
8501 Ease Pleasant Valley Road
Cleveland, Ohio 44131
AMERICAN NATIONAL STANDARDS INSTITUTE
1403 Broadway, New York, New York 10018
4 OM-HY/6G
Z21.30 Installation of Gas Appliances & Piping
Z223.1-1984 National Fuel Gas Code
WARNING
BEFORE REMOVING ANY PARTITION OR
PANEL, TURN OFF THE ELECTRICAL POWER
AND LET THE FAN STOP ROTATING.
BEFORE WORKING ON ANY ELECTRICAL
COMPONENT, DISCONNECT THE POWER
SOURCE FROM THE UNIT.
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 IN ACCORDANCE WITH
APPLICABLE CODES.
Your Groen HY-6G HyPerSteam Convection Steamer is designed to give years of
service. It has two stainless steel cavities (cooking chambers) which are served by
twin, independent atmospheric steam generators which are gas-heated. A powerful
blower circulates the steam in each cavity, to increase heating efficiency.
Each cavity holds up to three steam table pans (12”x 20” x 2½”). A 16 gauge stainless
steel cabinet encloses the cavities, the steam generators and the control compartment
that houses electrical components. Door hinges are reversible (the doors may be set to
open from the left or right). Operating Controls are on the front panel.
Newer model HY-6G steamers (manufactured since July 1999) are equipped with
fully electronic controls and a button-activated, pre-programmed CLEAN cycle. These
units are readily identified by their unique control panels. The On-Off switch on older
models has been replaced by touch pad controls, and the distinctive symbol for steam
is integrated into the panel design. The new model also has fewer panel louvers on the
right side.
The drain system includes a spray condenser, which reduces condensate temperature
and helps keep steam from escaping through the drain.
BURNER FIRING RATES
INPUT RATES, BTU/HOUR
NATURAL GAS
at 3.7” W.C.
LP GAS
at 10.5” W.C.
The HY-6G has two independent cavities, each
with its own base-mounted steam generator.
Individual Steam Generator 45,000 45,000
Total, Both Cavities 90,000 90,000
Voltage: 108-126 VAC Single Phase 50/60 Hz
Current: 2.5 AMPs ± 10%
OM-HY/6G 5
Treated
Water
Water Quality & Treatment
It is essential to supply the steam generator with water that will not form scale or cause
corrosion. Even though the steam generator is engineered to minimize scale formation
and the effects of corrosion, their development depends on the quality of your water and
the number of hours per day you operate the equipment.
Most water supplies are full of minerals and chemicals which are not suitable for use in
a steam generator.
Gas
Connection
REAR VIEW
Untreated
Water
Drain
Water quality varies from state to state and city to city. It is necessary that you know
and understand the quality of the water you are using. Your water utility can tell you
about the minerals and chemicals in your water. The water going to the steam generator
should be within these guidelines
Water Pressure 30-60 psi
PH 7 to 9
Hardness less than 60 ppm
TDS 30 to 60 ppm
Chlorine and Chloramine less than 0.1 ppm
Total Chloride less than 30 ppm
Silica less than 12 ppm
Undissolved Solids less than 5 microns
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 - 60 ppm TDS).
2. If your water contains scale-forming minerals, as most water does, use a wellmaintained water softener. Whether an exchangeable softener cartridge or a
regenerating 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
or regenerate the softener. Using a water softener will provide longer generator life,
higher steam capacity, and reduce maintenance requirements.
6 OM-HY/6G
4. 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
Inspection & Unpacking
CAUTION
SHIPPING STRAPS ARE UNDER TENSION
AND CAN SNAP BACK WHEN CUT.
CAUTION
THIS UNIT WEIGHS 550 POUNDS. GET HELP
AS NEEDED AND USE MATERIAL HANDLING
EQUIPMENT TO MOVE IT.
Your HY-6G HyPerSteam will be delivered completely assembled in a heavy shipping
carton and attached to a skid. On receipt, inspect the carton carefully for exterior
damage.
Carefully cut the straps around the carton and detach the sides of the carton from the
skid. Be careful to avoid personal injury. Strap edges may be very sharp, particularly
where cut.
Write down the model number, serial number and installation date. Space for these
entries is provided in the Service Log at the back of this manual. Keep the manual near
the equipment for reference and update as needed.
When installing, use material handling equipment to lift the unit straight up from the skid.
Check packing materials for any loose parts.
OM-HY/6G 7
Installation
WARNING
THE UNIT MUST BE INSTALLED BY
PERSONNEL WHO ARE QUALIFIED TO WORK
WITH GAS, 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. THE UNIT MUST BE
INSTALLED BY A LICENSED PLUMBER OR
GAS FITTER WHEN INSTALLED WITHIN THE
COMMONWEALTH OF MASSACHUSETTS.
CAUTION
DO NOT INSTALL THE UNIT WITH THE RIGHT
SIDE VENTS BLOCKED OR WITHIN 12 INCHES
OF A HEAT SOURCE (LIKE A BRAISING PAN,
DEEP FRYER, CHAR BROILER, OR KETTLE).
TO AVOID DRAIN PROBLEMS, LEVEL THE
UNIT FRONT TO BACK, OR PITCH IT
SLIGHTLY TO THE REAR.
UNIT
REAR
UNIT
FRONT
The HY-6G steamer is suitable for installation on or near both combustible and
noncombustible surfaces. Minimum installation clearances are:
Right Side 2 inches
Left Side 0 inches
Rear 6 inches
However, for easy service at least 12 inches clearance is required for the right side of
the unit, and it may not be installed within 12 inches of a heat source, as stated in the
Caution above.
The unit must be installed in a well-ventilated room with an adequate air supply. The
steamer must be installed beneath a ventilation hood, since gas combustion products
exit the appliance.
Any item which might obstruct or restrict the flow of air for combustion and ventilation
must be removed. Do not obstruct the flue cover or any front, side, rear, or top vents
after installation.
The area directly around the appliance must be cleared of all combustible material.
The installation must conform with local codes or, in the absence of local codes, with
the National Fuel Gas Code, ANSI Z223.1, latest edition, including the following:
The unit and its individual shutoff valve must be disconnected from the gas supply
system during any pressure testing of that system at test pressures in excess of 1/2
PSI (3.45 kPa). It must be isolated from the gas supply piping system by closing its
individual manual shutoff valve during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 PSI (3.45 kPa).
Flue
Control
Box
Electrical
Conduit
The knockout hole is sized for a one inch
conduit fitting. Pass the wire up the back
through this knockout hole to the front. Make
the connections from the front.
1. Electrical Supply Connection
Provide 115 VAC, 60 HZ, 1 PH, 15 AMP service. Bring conduit in through open
frame on the under-side of cabinet. 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. Maximum load is 2
AMPs. In Canada, provide electrical service in accordance with the Canadian
Electrical Code, CSA C22.1 Part 1 and/or local codes.
2. Gas Supply Connection
Connection to the gas supply can be completed with 1/2” NPT pipe or approved
equivalent. Although the immediate connection to the appliance is “ NPT, gas
supply piping must be large enough to provide 90,000 BTU/hr. Supply pressure
must be at least 4.5” 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. After the unit has been connected to the gas
supply, all gas joints must be checked for leaks.
No flame should be used when checking for leaks. A thick soap solution or other
suitable leak detector should be used.
8 OM-HY/6G
Installation
For a unit on casters, complete connection to the gas supply with connectors
that comply with the standard for connectors for moveable gas appliances, ANSI
Z21.69 — latest edition. Restrain movement of the unit by attaching a cable or
chain to the eyelet (provided at the back of the frame) and anchoring the cable or
chain to 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. Water Connection
A back siphonage device (check valve) must be installed in both incoming cold
water lines according to local plumbing code. The water line pressure should be
between 30 and 60 PSI. A pressure regulator is required above 60 PSI. A ¾ inch
NH (garden hose type) connector is required to connect the water supply to the
water inlet valves. The minimum diameter of the water feed line is ½ inch. Use
one washer (or, if necessary, two washers) in the hose connection. Do not allow
the connection to have any leak, regardless of how small.
4. Untreated Water Second Connection
As discussed previously, the flow of water used for steam suppression in
the drain is much greater than the amount of water used to generate steam.
The second connection on steamers (see illustration under “Water Quality &
Treatment” section) permits the installer to supply treated water to the steam
generator and untreated water to the drain. With “split water” feature, the initial
fill requirement for treated water is 3.5 U.S. gallons (19 L) within 2.5 minutes.
The requirement for treated makeup water is 0.12 gallon (0.45 L) per minute per
cavity. A field retrofit kit is available for single water connection if required.
5. Drain Connection
The HY-6G Steamer must be leveled front to back. A 1½ inch (38mm) ID hose
may be attached to the drain pipe (supplied) by means of a hose. DO NOT
CONNECT THE HOSE 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 drain. There must also be no other elbows or
other restrictions between the unit drain and the free air gap.
Do NOT use plastic pipe. The drain must withstand boiling water.
Install the drain line with a constant downward pitch. 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.
OM-HY/6G 9
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