Groen HY-3E, HY-3CE Operators Manual

OPERATOR MANUAL

IMPORTANT INFORMATION, KEEP FOR OPERATOR

This manual provides information for:

HY-3E(CE) & HY-5E(CE)
HYPERSTEAM™
ATMOSPHERIC CONVECTION
STEAMER

· Self Contained

· Electric Heated

· Capacity: 3 or 5 Steamer Pans (305 x 508 x 64mm)

THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE.
READ, UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND
WARNINGS CONTAINED IN THIS MANUAL.

INTERNATIONAL

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. Unied 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 128174, REV G (07/14)

1055 Mendell Davis Drive

Jackson, MS 39272

888-994-7636, fax [phone]

unifiedbrands.net

IMPORTANT - READ FIRST - IMPORTANT

THESE APPLIANCES MUST BE INSTALLED BY A COMPETENT PERSON IN CONFORMITY WITH THE INSTALLATION
AND SERVICING INSTRUCTIONS AND NATIONAL REGULATIONS IN FORCE AT THE TIME. PARTICULAR ATTENTION
MUST BE PAID TO THE FOLLOWING:

I. E. E. REGULATIONS FOR ELECTRICAL INSTALLATIONS
ELECTRICITY AT WORK REGULATIONS
HEALTH AND SAFETY AT WORK ACT
FIRE PRECAUTIONS ACT
LOCAL AND NATIONAL BUILDING REGULATIONS

USERS SHOULD BE CONVERSANT WITH THE APPROPRIATE PROVISIONS OF THE FIRE PRECAUTIONS ACT. IN
PARTICULAR THEY SHOULD BE AWARE OF THE NEED FOR REGULAR SERVICING BY A COMPETENT PERSON TO
ENSURE THE CONTINUED SAFE AND EFFICIENT PERFORMANCE OF THE APPLIANCE.

WARNING: TO PREVENT SHOCKS, ALL APPLIANCES WHETHER GAS OR ELECTRIC, MUST BE EARTHED.

UPON COMPLETION OF THE INSTALLATION, THE OWNERS MANUAL SHOULD BE HANDED TO THE
USERS AND THE INSTALLER SHOULD INSTRUCT THE RESPONSIBLE PERSON(S) IN THE CORRECT
OPERATION AND MAINTENANCE OF THE APPLIANCE.

THIS EQUIPMENT IS ONLY FOR PROFESSIONAL USE, AND SHALL BE OPERATED BY QUALIFIED PERSONS. IT
IS THE RESPONSIBILITY OF THE SUPERVISOR OR EQUIVALENT TO ENSURE THAT USERS WEAR SUITABLE
PROTECTIVE CLOTHING AND TO DRAW ATTENTION TO THE FACT THAT, SOME PARTS WILL, BY NECESSITY,
BECOME VERY HOT AND WILL CAUSE BURNS IF TOUCHED ACCIDENTALLY.

UNLESS OTHERWISE STATED, PARTS WHICH HAVE BEEN PROTECTED BY THE MANUFACTURER ARE NOT TO BE
ADJUSTED BY THE INSTALLER.

WARNING: AVOID ANY EXPOSURE TO THE STEAM COMING OUT WHEN OPENING THE DOOR. BEFORE

ATTEMPTING ANY SERVICING, ENSURE THAT THE ELECTRICAL SUPPLY IS DISCONNECTED.

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, CHARBROILER 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.

2 OM-HY/3E(CE) & HY/5E(CE)

IMPORTANT - READ FIRST - IMPORTANT

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 DE-LIMING
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 LEFT AND 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: 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-HY/3E(CE) & HY/5E(CE) 3

Table of Contents

Important Operator Warnings ....................................................page 2-3

References.................................................................................... page 4

Equipment Description.................................................................. page 5

Inspection and Unpacking ............................................................ page 5

Water Conditioning ....................................................................... page 6

Installation & Start-Up ................................................................ page 7-9

Operation ................................................................................ page 10-11

Cleaning.................................................................................. page 12-13

Maintenance................................................................................. page 14

Troubleshooting............................................................................ page 14

Electrical Schematic ............................................................. page 21-22

Service Procedures ............................................................. page 23-34

Service Log ................................................................................. page 35

References

UNDERWRITERS LABORATORIES, INC.

333 Pngsten Road

Northbrook, Illinois 60062

NATIONAL FIRE PROTECTION ASSOCIATION
60 Batterymarch Park
Quincy, Massachusetts 02269

NFPA/70 The National Electrical Code

NSF INTERNATIONAL
789 N. Dixboro Rd.
P.O. Box 130140
Ann Arbor, Michigan 48113

KLENZADE SALES CENTER
ECOLAB, Inc.
370 Wabasha
St. Paul, Minnesota 55102
800 328-3663 or 612 293-2233

4 OM-HY/3E(CE) & HY/5E(CE)

The HY-5E steamer holds five standard 305 mm

x 508 mm x 64 mm deep pans.

Equipment Description

Your Groen HY-3E or HY-5E HyPerSteam Convection Steamer is designed to give years
of service. It has a stainless steel cavity (cooking chamber) which is served by an
independent atmospheric steam generator which is electrically heated. A powerful
blower circulates the steam in the cavity to increase heating efficiency.

The cavity holds up to three (HY-3E) or five (HY-5E) standard steam table pans. A 1.5
mm thick stainless steel case encloses the cavity, the steam generator and the control
compartment that houses electrical components. Door hinges are reversible (the door
may be set to open from the left or right). Operating Controls are on the front panel.

Model HY-3E steamers and HY-5E steamers are equipped with fully electronic
controls and a button activated, pre-programmed CLEAN cycle. These units are readily
identified by their unique control panels, with touch pad controls, and the distinctive
symbol for steam is integrated into the panel.

Both units are distinguished by the addition of a “fuse box” which allows the operator
to change fuses without removing panels.

The drain system on all models includes a spray condenser, which helps keep steam
from escaping from the chamber and cools drain water.

The HY-3E steamer holds three standard 305

mm x 508 mm x 64 mm deep pans.

CAUTION
SHIPPING STRAPS ARE UNDER TENSION
AND CAN SNAP BACK WHEN CUT.

CAUTION
THIS UNIT WEIGHS 82 KG (HY-3E) OR 105 KG
(HY-5E). YOU SHOULD GET HELP AS NEEDED
TO LIFT THIS WEIGHT SAFELY.

Inspection & Unpacking

The HY-3E or HY- 5E will be delivered completely assembled in a heavy shipping carton
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. 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. Keep this information
for reference. Space for these entries is provided at the top of the Service Log in the
back of this manual.

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

OM-HY/3E(CE) & HY/5E(CE) 5

Water Conditioning

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.

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

A BSPT connection is provided
at the rear of the steamer.

The optional second water connection can
reduce treated water requirements.

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.

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.

6 OM-HY/3E(CE) & HY/5E(CE)

Installation & 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 IN ACCORDANCE WITH
APPLICABLE CODES.

CAUTION
DO NOT INSTALL THE UNIT WITH THE RIGHT
OR LEFT SIDE VENTS BLOCKED OR WITHIN
305 mm OF A HEAT SOURCE (SUCH AS A
BRAISING PAN, DEEP FRYER, CHAR BROILER
OR KETTLE). TO AVOID DRAINAGE PROBLEMS,
LEVEL THE UNIT FRONT TO BACK.

CAUTION
THE UNIT MUST HAVE A SEPARATE GROUND
WIRE FOR SAFE OPERATION.

WARNING
TO AVOID DAMAGE OR PERSONAL INJURY,
FOLLOW THE ELECTRICAL SCHEMATIC
EXACTLY WHEN CONNECTING THE UNIT.

ELECTRICAL SUPPLY CONNECTION

1. Panel Removal

Open the wiring and control panel by removing the screws on the right side panel.

Slide the panel forward, and set it aside.

2. Supply Voltage

The unit must be operated at the rated nameplate voltage.

3. Phase Selection

Refer to heater schematics (Pages 21 and 22) for wiring information.

4. Terminal Block

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

compartment. The ground terminal is located in the wiring compartment near the
terminal block.

5. Supply Wire

To determine the type of wire you need for the power supply, find the operating

voltage and phase on the unit data plate. Use the correct wire size to meet the
current demand as shown in the table, below and as required by regulations. The
knockout hole is sized for a 35 mm conduit fitting.

The HY-3E HyPerSteam™ and HY-5E model convection steamers operate at 400

Volts (Three Phase ‘delta” with Neutral) or 230 Volts (One Phase). Separate part
numbers are offered for 50 Hz and 60 Hz operation to supply the appropriate
electro-mechanical timer, since they synchronize with the Mains Power frequency.

HY-3E Electrical Connections

HY-5E Terminal Block

Model Voltage Max. Kw

HY-3E

HY-5E

400 - 3 Phase 8 13 Amps

230 - 1 Phase 8 33 Amps

400 - 3 Phase 15.5 23 Amps

230 - 1 Phase 15.5 63 Amps

Nominal

Current Demands

Connect appropriate wiring as described in the wiring diagram located on the

inside of the unit’s right side panel. Incoming power connections are shown at left.

OM-HY/3E(CE) & HY/5E(CE) 7

Installation & Start-Up

6. Equipotential Terminal

In accordance with national regulations, each unit are fitted with an equipotential

terminal.

7. Branch Circuit Protection

Each HY-3E Steamer should have its own branch circuit protection. Current and

power demands for the different units are as shown in the table on page seven.

The equipotential terminal is located
on the left rear of the units.

WARNING
DO NOT CONNECT THE DRAIN DIRECTLY TO A
BUILDING DRAIN. BLOCKING THE DRAIN IS
HAZARDOUS.

CAUTION
DO NOT USE PLASTIC PIPE. DRAIN MUST BE
RATED FOR VERY HOT WATER.

WATER CONNECTION(S)

Water pressure in the line should be between 30 and 60 PSIG (210 and 420 kPa) and
deliver a flow rate of 5.7 to 11.4 liters per minute. If pressure is above 60 PSIG (420
kPa), a pressure regulator will be needed.

A 3/4” BSPT connector is used to attach the water supply to the inlet valves. Minimum
water feed line diameter is 1/2” (13 mm). Use a washer in the hose connection. Do not
allow the connections to leak, no matter how slowly. Treated (softened) water goes to the
right (seen from the rear of the unit) and untreated water goes to the left. Connections
are made as shown on the previous pages.

On each water line, install a WRAS approved double-check valve or an equally
effective back flow preventative device in the incoming cold water lines at the point
of connections to the steamer and in compliance with all local plumbing codes. This
installation must be per WRAS-IRN R160 Schedule 2-15 (1).

Water Quality Requirements: For proper steam generator performance, Total Dissolved
Solids (TDS) should not exceed 30 parts per million (ppm), and the water pH should be

7.1 or higher.

DRAIN CONNECTION

Level the steamer front to back, or even pitch it slightly to the rear by adjusting the bullet
feet on the stand or cabinet base.

8 OM-HY/3E(CE) & HY/5E(CE)

A two inch (50mm) [HY-5E] or 1½ inch (38 mm) [HY-3E] ID hose should be attached to
the drain pipe and elbow supplied. It must be rated for 100ºC water.

There must be at least one-half inch 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 two
inch free air gap.

Install the drain line with a constant downward pitch. IMPORTANT: Do not allow water
traps in the line. A trap can cause pressure build-up in the cavity, which may cause the
door gasket to leak.

Installation & Start-Up

WARNING
DO NOT CONNECT THE UNIT DRAIN DIRECTLY
TO THE BUILDING DRAIN.

CAUTION
DO NOT USE PLASTIC PIPE. DRAIN MUST BE
RATED FOR VERY HOT WATER.

Rear view of (2) HY-5E. NOTE: Some drain parts
(elbow, clamps) for single models are packed
inside the steamer cavity. Stacked units are
factory assembled. Installation is the same for
stacked HY-5E and HY-3E units.

FACTORY STACKED UNITS

This section is applicable only if you are installing factory-stacked units. If you plan to
stack steamers yourself, whether purchasing a new one for stacking or a kit to stack
two units you already own, you will require OM-HY-3E(S), RETROFIT SUPPLEMENT (Part
Number 121014). These instructions are also valid for stacking HY-5E steamers.

Installing stacked steamers is similar to installing a single unit. The steamers are stacked
and assembled at the factory and delivered with the water connections and drain hoses
required for a single point connection.

1. Water Connection

The same water supply connection is used for both units. At the water level inlet

valve a 3/4” BSPT connector (garden hose type) is used for the water supply.
Treated water (softened) is connected to the right valve fitting (looking from the
rear of the unit) and untreated water to the left fitting.

2. Electrical Supply Connection

Separate, individual electrical connections will be required for each steamer in the

stack. Each Steamer must have its own branch circuit protection.

3. Water Connection

Steamers must be leveled front to back, or pitched to the rear (maximum 6 mm) by

adjusting the bullet feet on the cabinet or stand base.

For HY-3E a 38 mm (1½ inch) and for HY-5E or 50 mm (2 inch) ID hose may be

attached to the unit drain. It must be rated for 100ºC.

Ensure that there is a free air gap between the end of the unit drain and the

building drain. This gap should be as close as possible to the unit drain. Do not
allow elbows or restrictions between the unit and the free air gap.

Proper Drain Line Connection. Drain Line must
have a constant downward pitch of at least 6
mm (¼”) per foot. Connection is 38 mm (1½”)
for HY-3E, 50 mm (2”) for HY-5E. (3)HY-3E
shown.

COUNTER-MOUNTED UNITS

This section is applicable if the steamer will be mounted to a counter. All four edges of
the bottom of the steamer must be sealed with RTV to the counter if the 4 inch legs are
not used. Counter must be made of a noncombustible material such as metal or tile.

OM-HY/3E(CE) & HY/5E(CE) 9

Operation

WARNING
ANY POTENTIAL USER OF THE EQUIPMENT
SHOULD BE TRAINED IN SAFE AND CORRECT
OPERATING PROCEDURES.

WARNING
WHEN YOU OPEN THE DOOR, STAY AWAY
FROM THE STEAM COMING OUT OF THE
UNIT. THE STEAM CAN CAUSE BURNS.

CONTROLS

Operator controls are on the front right of the unit. The control panel has the following
touch pads and indicator lights. (Your controls may have either words or the symbols
shown below):

The ON/OFF touch pad gets the HyPerSteam ready for use, or shuts it off.

The READY indicator light shows that the steam generator is at standby
temperature and the cavity is hot enough to begin steaming.

The CLEANING indicator lights when the unit is operating in the cleaning
mode.

The SERVICE indicator light shows when the water level probes have
stopped working, and need to be cleaned (normally an indication of lime
deposits). When one probe is not working, the SERVICE light flashes briefly
every few seconds, but the unit continues to operate. De-lime the unit as
soon as possible. If the problem continues, both probes may fail. Then the
steamer stops working, the light will flash repeatedly and the beeper will
sound. At this point you must turn off the power and contact an Authorized
Groen Service Representative for repair.

The HI TEMP indicator light comes on when the steam generator is too hot.
The unit will automatically shut off, and cannot be turned on again until the
steam generator cools and the HI TEMP light goes out.

The TIMING indicator light stays on when the timer is running.

The CLEAN touch pad is used to start the automatic 50 minute cleaning
cycle.

The timer is used in three ways:

1. In the OFF position the steam generator stays at a low boil or “holding”
temperature.

2. When a cook time is set, the unit steams until the timer reaches OFF. The steaming
stops, a red light comes on and a beeper sounds.

3. With the timer turned to the ON position, the unit steams continuously. The green
light stays lit. The steamer will not time down.

10 OM-HY/3E(CE) & HY/5E(CE)

Operation

WARNING
WHEN YOU OPEN THE DOOR, STAY AWAY
FROM THE STEAM COMING OUT OF THE
UNIT. THE STEAM CAN CAUSE BURNS.

Done Light

Manual

Position/Light

Steamer Timer

Timing

Indicator Light

Power On/Off

Touch Pad

Power

Indicator Light

Ready

Indicator Light

Service

(“De-Lime Me”)

Indicator Light

Cleaning

Indicator Light

Clean Cycle

Touch Pad

High Temp

Indicator Light

OPERATING PROCEDURE

1. Press the ON switch/pad for the steamer. The steam generator will fill, and heat
until the READY light comes on. (About 10 minutes.)

2. Load food into pans in uniform layers. Pans should be filled to about the same
levels, and be even on top.

3. Open the door and slide the pans onto the supports. If you will only be steaming
one pan, put it in the middle position.

4. Close the door. With the READY indicator lit, take one of the following steps:

• If you want to steam the food for a certain length of time, set the timer for

that period. The timer will automatically run the steamer for the set time
and then turn it off. A red light will come on and a beeper will sound. Steam
production stops.

• To steam continuously, turn the timer to the manual ON position. A green light

will come on. The unit will continue steaming until you stop it by turning the
timer to OFF. When steaming continuously YOU MUST CONTROL STEAMING
TIME.

5. Open the door. Remove the pans from the steamer, using hot pads or oven mitts to
protect your hands from the hot pans.

6. To shut down the unit, press the ON/OFF touch pad to OFF. The steam generator
will automatically drain.

OM-HY/3E(CE) & HY/5E(CE) 11