Groen HY-3E(CE) Service Manual

IMPORTANT INFORMATION - KEEP FOR OPERATOR - IMPORTANT INFORMATIONIMPORTANT INFORMATION - KEEP FOR OPERATOR - IMPORTANT INFORMATION

OPERATOR AND SERVICE MANUAL OM/SM-HY-3E(CE)

Part Number 128174 OM/SM-HY-5E(CE)

INTERNATIONAL

MODELS: HY-3E(CE), HY-5E(CE)

HyPerSteam™
Atmospheric Convection Steamer - CE

Self-Contained
Electric Heated
Capacity: 3 or 5 Steamer Pans

(12" x 20" x 2½”)

(305 mm x 508 mm x 64 mm)

HY-3E(CE)

HY-5E(CE)

KEEP THIS MANUAL WITH STEAMER DOCUMENTS. OPERATORS AND
TECHNICIANS SHOULD READ, UNDERSTAND AND FOLLOW INSTRUCTIONS
AND WARNINGS CONTAINED IN THIS MANUAL.

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.

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

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 EQUIVALET 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.

2

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

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 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.

3

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

Table of Contents

OPERATOR WARNINGS .....................................................2

REFERENCES .............................................................3

EQUIPMENT DESCRIPTION ..................................................4

INSPECTION AND UNPACKING ...............................................4

WATER CONDITIONING/REQUIREMENTS ......................................4

INSTALLATION AND START-UP INSTRUCTIONS .................................6

OPERATING INSTRUCTIONS ................................................10

CLEANING ...............................................................12

MAINTENANCE AND TROUBLESHOOTING ....................................14

PARTS LIST ..............................................................15

SCHEMATICS HY-3E .......................................................21

SCHEMATICS HY-5E .......................................................22

SERVICE PROCEDURES ...................................................23

SERVICE LOG ............................................................33

WARRANTY PROTECTION .................................................34

References

UNDERWRITERS LABORATORIES, INC.
333 Pfingsten Road
Northbrook, Illinois 60062

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

NATIONAL FIRE PROTECTION
ASSOCIATION
60 Battery March Park
Quincy, Massachusetts 02269

NFPA/70 The National Electrical Code

NATIONAL SANITATION FOUNDATION
3475 Plymouth Road
Ann Arbor, Michigan 48106

4

Equipment Description

Your Groen HY-3E and HY-5E HyPerSteam
Convection Steamers are 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 electrically­heated. 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.

Newer model HY-3E steamers and all 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.

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

The HY-5E steamer holds five standard 305 mm
x 508 mm x 64 mm deep pans.

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.

Inspection and 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.

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.

The HY-3E steamer holds three standard 305
mm x 508 mm x 64 mm deep pans.

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

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.

5

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

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 per
day 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 10 and 30 parts per million
(ppm) total dissolved solids (TDS) and should have a
pH (acidity rating) of 7.0 or higher. 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 (10 - 20 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.

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.

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

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

6

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

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 IN ACCORDANCE WITH APPLICABLE CODES.

CAUTION
DO NOT INSTALL THE UNIT WITH THE RIGHT OR LEFT SIDE VENTS BLOCKED OR WITHIN 12 INCHES
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.

1. Electrical Supply Connection

A. Panel Removal

Open the wiring and control panel by removing
two screws (three on new model) on the right
side panel. Slide the panel forward, and set it
aside.

B. Supply Voltage

The unit must be operated at the rated
nameplate voltage, plus or minus 10 percent.

C. Phase Selection

Refer to heater schematics (Pages 17 thru 20)
for wiring information.

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

D. 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. Minimum
size for the ground wire is 10 AWG.

E. 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. Refer to the table
below for correct wire size and temperature
rating. The “Electrical Supply Connection” label
on back right side of the unit gives directions for
proper connection of the terminal block jumpers.
The specified wire must be used, or the unit will
not meet Underwriters Laboratories and National
Electric Code requirements. The knockout hole
is sized for a 35 mm conduit fitting.

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

The HY-3E HyPerSteam™ and HY-5E model convenction steamers operate at 400 Volts (Three Phase) or 230
Volts (One Phase)

ELECTRICAL SUPPLY CONNECTIONS

Model Voltage Maximum Kw Field Wiring Current Demands
HY-3E

HY-5E

400 - 3 Phase 8 14 AWG 13 Amps
230 - 1 Pahse 8 8 AWG 33 Amps
400 - 3 Phase 15.5 12 AWG 23 Amps
230 - 1 Phase 15.5 6 AWG 63 Amps

7

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

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
below.

HY-3E Electrical Connections

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

F. EQUIPOTENTIAL TERMINAL

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

G. 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.

2. Water Connection(s)

Install a check valve to prevent back flow in the
incoming cold water line, as required by local
plumbing codes. Water pressure in the line
should be between 30 and 60 PSIG (210 and
420 kPa). If pressure is above 60 PSIG (420
kPa), a pressure regulator will be needed.

7.5 LITER STEAM GENERATOR VOLUME MUST
BE FILLED WITHIN THREE MINUTES AND 30
SECONDS.

HY-5E Terminal Block

A ¾ inch BSPT connector is used to attach the
water supply to the inlet valve. Minimum water
feed line diameter is ½ inch (13mm). Use a
washer in the hose connection. Do not allow the
connection to leak, no matter how slowly.

8

3. 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.

A two inch (50mm) ID hose should be attached
to the drain pipe and elbow supplied.

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

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.

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

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

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.

9

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

Operation

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

A. 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. When both probes fail,
the light will flash continuously and
the beeper will sound.

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 it
has been serviced.

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

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.

B. 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. The maximum allowable weight of
food is 9.8 Kilograms (21.6 lbs.) Per pan.

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.

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.

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

10

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

5. Ope
n 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 switch/pad
to OFF. The steam generator will automatically
drain.

11

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

Cleaning

To keep your HY-3E or HY-5E Steamer in proper working condition, use the following procedure to clean the unit.
This regular cleaning will reduce the effort required to clean the steam generator and cavity.

A. Suggested Tools

1. Mild detergent

2. Stainless steel exterior cleaner such as
Zepper®

3. Steam generator de-liming agent, such as
Groen Delimer Descaler, Lime-Away® 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®, 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

12. Funnel

B. Procedure

1. Exterior Cleaning

a. Prepare a warm 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.

WARNING
DISCONNECT THE POWER SUPPLY
BEFORE CLEANING THE OUTSIDE OF
THE STEAMER.
KEEP WATER AND CLEANING
SOLUTIONS OUT OF CONTROLS AND
ELECTRICAL COMPONENTS. NEVER
HOSE OR STEAM CLEAN ANY PART OF
THE UNIT.

DON’T MIX DE-LIMING AGENTS (ACID)
WITH DE-GREASERS (ALKALI)
ANYWHERE IN THE UNIT

AVOID CONTACT WITH ANY
CLEANERS, DE-LIMING AGENT OR DE­GREASER 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 OPERATE THE UNIT UNLESS
THE REMOVABLE PARTITION HAS
BEEN PUT BACK IN ITS PROPER
LOCATION.

b. To remove material which may be stuck to the

unit, use plastic wool, a fiber brush, or a plastic
or rubber scraper with a detergent solution.

c. Stainless steel surfaces may be polished with a

recognized stainless steel cleaner such as
Zepper®.

IMPORTANT
DO NOT USE ANY METAL MATERIAL (SUCH AS METAL SPONGES) OR METAL IMPLEMENTS (SUCH AS
A SPOON, SCRAPER OR WIRE BRUSH) THAT MIGHT SCRATCH ANY STAINLESS STEEL SURFACE.
SCRATCHES MAKE THE SURFACE HARD TO CLEAN AND PROVIDE PLACES FOR BACTERIA TO GROW.
DO NOT USE STEEL WOOL, WHICH MAY LEAVE PARTICLES IMBEDDED IN THE SURFACE WHICH COULD
EVENTUALLY CAUSE CORROSION AND PITTING.

DON’T USE ANY CLEANING OR DE­LIMING 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.

12

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

Steam Generator and Cooking Chamber

The steamer cavity and steam generator may be
cleaned separately. When cleaning is scheduled, or
if the SERVICE light is on, follow these simple de­liming instructions. REMEMBER: DON’T ALLOW

DE-LIMING AGENTS TO MIX WITH DE­GREASERS.

a. Set the timer to OFF position.

b. Turn off the steamer for five

minutes.

c. Open the door and allow the

cavity to cool.

d. After the cavity has cooled five minutes, make

sure that the fan has stopped and remove the
fan baffle partition by lifting it up and toward the
center of the cavity.

e. Wipe out the cavity. Make sure the drain

holes at the back of the cavity are clear of
debris.

When the READY light comes on, the steamer
is ready for normal operation.

If the SERVICE light stays on after Steam
Generator Cleaning:

a. Check that the water supply is on and that the

supply hose is not kinked. With the problem
corrected, turn the steamer off for 10 seconds
and then re-start.

b. Repeat steam generator cleaning procedures.

f. Hold down the CLEAN button while turning the

steamer on. Continue holding the CLEAN
button until the CLEANING indicator
light comes on. Then release the
button. After five minutes, the
beeper will begin to beep rapidly.
This is the signal to add Groen
Delimer Descaler (P/N 114800),
Lime-A-Way® or equivalent.

g. Replace fan baffle partition and

close door.

h. The cleaning cycle consists of a

boiling clean stage, a soak stage,
and a rinse stage. The full cycle

takes about 50 minutes to
complete.

i. WEAR PROTECTIVE GLOVES AND EYE

PROTECTION FOR THIS STEP. When the
steamer beeper sounds, turn off the steamer
and open the door. After the fan has stopped,
remove the fan baffle partition and rinse it well in
a sink. Wipe out the cavity completely. If
necessary, use a damp nylon pad.

Once the cavity has cooled, reach in and
remove the fan baffle partition by lifting it
upward and drawing it toward the center of
the cavity.

j. Reinstall the fan baffle partition.

k. If the steamer will no longer be used, leave it off.

Otherwise, wait 10 minutes and turn it back on.

Pour two cups of Groen de-liming solution or
Lime-Away into the de-liming port.

13

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

Maintenance

HY-3E and HY-5E Steamers are designed for
minimum maintenance, and no user adjustments
should be necessary. Certain parts may need
replacement after prolonged use. If there is a need
for service, only Groen personnel or authorized
Groen representatives should perform the work.

Always supply water with a low mineral count that
meets the standards outlined in the Water
Conditioning section of this manual.

If steam or condensate is seen leaking from around
the door, take the following steps:

1. Check the door gasket. Replace if it is cracked
or split.

2. Inspect the cooking chamber drain to be sure it
is not blocked.

3. Adjust the latch pin to allow for changes that
might occur as the gasket ages.

a. Loosen the lock nut at the base of the latch

pin, then turn the latch pin ¼ turn clockwise,
and tighten the lock nut.

b. After adjustment, run the unit to test for

further steam leakage.

c. If there is still leakage, repeat the

adjustment.

d. Continue adjusting the pin clockwise until

the door fits tightly enough to prevent
leakage.

Troubleshooting

This Groen Steamer is designed to operate smoothly and efficiently if properly maintained. However, the
following is a list of checks to make in the event of a problem. Wiring diagrams are furnished inside the service
panel. If an item on the check list is marked with (X), it means that the work should be done by a factory­authorized service representative.

SYMPTOM WHO WHAT TO CHECK

Steam generator does not fill with
water.

No steam. User a. Is the ON switch depressed?

SERVICE light comes on after four
minutes.

Excessive steam escaping from
rear of unit

High Limit Indicator Light is “ON.” Auth Service

User a. Is the ON switch depressed?

b. Is the water supply connected?
c. Is the water turned on?
d. Check for low water pressure (less than 30 PSI or

210 kPa).
e. Is the screen at the water connection clogged?
f. Has the steam generator been delimed?

b. Is the water supply connected?
c. Is the water turned on?
d. Are steamer doors open?
e. Is the steam generator limed up?

User a. Is the water supply connected?

b. Is the water turned on?
c. Has the unit been delimed? (Refer to Cleaning

Section)

User a. Is the water spray hose kinked or obstructed?
Auth Service

Rep Only

Rep Only

b. Is the water spray solenoid connected?(X)
c. Is the drain properly vented? (X)

a. Reset the high limit thermostat after checking the

cause of high temperature and correcting it. (X)

(See Item M, Service Section, Page 29)

14

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

Parts List - Model HY-3E

To order parts, contact your authorized Groen Service Agency. Supply the model designation, part description,
part number, quantity, and when applicable, voltage and phase.

Key Description Part No. Key Description Part No.

1 Right Side Panel 123134 18 Top Panel 123133

1a Left Side Panel 123135 19 Fuse Box

2 Door Assy, Complete 094150 19a Cover, Fuse Box 119846
3 Door Handle 070123 20 Back Panel 125752
4 Door Gasket 094147 22 Drip Tray 094151
5 Left Pan Rack 094148 23 Timer Fastener Nut 101145
6 Blower Cover/Rack 096788 25 Diverter & Vent Assy 123115
7 Door Locking Pin 078914 26 Water Valve - Two Way 071235

8 Door Pin Lock Nut 003823 % Heat Shield 118127
11 Cavity Fan 096790 % Optional Legs 041121
12 Timer 100983 % P. C. Board Cover 119806
13 Timer Knob 123100 % Equipotential Terminal 122021

17a Mylar Overlay Plate (English) 123126 % Drain Kit 127393
17b Mylar Overlay Plate (Univ. Symbols) 128215 % Water Inlet Adapter Assy 122144

* Part Not Shown

15

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

Parts List-Model HY-3E (Continued)

To order parts, contact your authorized Groen Service Agency. Supply the model designation, part description,
part number, quantity, and when applicable, voltage and phase.

Key Description Part No. Key Description Part No.

1 Heater Element, 240 /400V 123102 9 Fuse, 3 Amp x

2 Heater Element Gasket 042366 10 Fuse, 6 Amp 119823

3 Hi Limit Thermostat 094161 10 Fuse, 20 Amp x

% Thermostat Clamp 093482 % PC Board Light & Timer 119817

5 Water Level Probe 070178 % PC Board, Steamer Control 119801

6 Water Valve-2 Way 071235 11 Transformer 75VA 208/240/480V 106234

7 Water Level Board x Primary/ 24V Secondary

8 Control Board x % High Heat Contactor 119811

*Part Not Shown in Photograph

16

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

Parts List - HY-3E

To order parts, contact your authorized Groen Service Agency. Supply the model designation, part description, part number,
quantity, and when applicable, voltage and phase.

Key Description Part No. Key Description Part No.

4 Timer 100983 22 Fuse Block 096809
8 Door Switch 096857 23 Terminal Block 088214

11 Steam Port 118103 24 Inlet Water - 2 Way* 071235

11a Steam Port Gasket 099250 — Brackets 094189

12 Fan Motor 096740 25 Drain Valve* 071234

12a Motor Seal 096868 — Brackets 099991

13 Upper Steam Hose 123867 26 Drain Hose,* Stm Gen 096806
14 Lower Clean Hose 100926 27 Spray Nozzle* 078933
15 Hose Clamp 1-3/8" 010873 28 Spray Hose* 096807
16 Electric Heater Gasket 042366 29 Water Inlet Hose* 096773
17 Transformer 208/220/240 106234 30 Motor Capacitor* 096813
18 Water Level Probe 070178 31 Drain Hose, Cavity* 122873
19 Electric Heater, 240/400 Volt 128224 32 Ready Thermostat 088865
20 High Limit Thermostat, Manual Reset 122009 33 6 Amp Fuses 119823
21 Steam Generator 125707 36 High Heat Contactor 122008

21a Insulation Steam Generator 100922 37* Harnesses*-Call Groen Authorized Service Agent

17

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

Parts List - Model HY-5E

Key Description Part No. Key Description Part No.

1 Left Pan Rack 125901 Mylar Overlay Plate (Symbols) 128215

2 Door Assembly, Complet 125922 14 Water Valve, Two Way 071235

3 Door Gasket 094147 Water Valve Brackets 094189

4 Door Handle 070123 % Water Inlet Adapter Assembly 122144

5 Drip Tray 094151 15 Back Panel 125981

6 Top Panel 123133 16 Left Side Panel 125931

7 Blower Cover/Right Pan Rack 125902 17 Diverter & Vent Assembly 125918

8 Timer 100983 Drain Valve 071234

9 Timer Knob 123100 Brackets 099991
10 Right Side Panel 125930 Drain Hose, Steam Generator 125998
11 Door Locking Pin 078914 % Equipotential Terminal Assembly 122021
12 Door Pin Lock Nut 003823 % Drain Kit 128237
13 Mylar Overlay Plate (English) 123127

18

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

Parts List - Model HY-5E

19

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

Parts List - Model HY-5E

To order parts, contact your authorized Groen Service Agency. Supply the model designation, part description, part number, quantity, and when applicable,
voltage and phase.

Key Description Part Key Description Part Key Description Part

1 Platform Assembly 125967 11 Timer, Steamer, 50 Hz 100983 28 Heating Element, 240/400 V 123102
2 Motor Assembly 096740 12 Knob, Timer 123100 x Heater Element Gasket 042366
x Motor Seal 096868 13 Steamer Control Bd PC Bd Assy 119801 29 Plug, Pipe ¼ NPT 304 SS 004145
3 Chassis Assembly, HY-5E 119852 14 Light & Timer PC Board Assembly 119817 30 Hose 1½ ID x 20" 088846
4 Fuse Block Assembly 119848 15 Standoff, Hex M-F 6-32 x ¾ 119826 31 Clamp, Constant Tension 126011
5 Cover, Fuse Box 119846 16 Standoff, Hex M-F 6-32 x 1¼ 119827 32 Clamp, Constant Tension 127524
x Fuse Holder 096809 17 Harness, Timer Motor 123120 33 Hose, Steam Unit, 18" 125954
x Fuse, Six Amp 119823 18 Jumper, Ctrl Bd to Display Bd 123122 x Transformer 208/240/480 V 106234
6 Heating Assy w/Tstat 240/400V 128224 19 Cover, Control Panel 119806 x High Heat Contactor 119811

6a Heating Elem w/o Tstat 240/400V 123102 20 Nut, Keps, 6-32 071289 x Toroid Transformer 480 V 119856

7 Line Connection Assembly 119851 21 Nut, Keps 10-32 071256 x Transformer 20 VPP 119815
8 Universal Thermostat 088865 22 Nut, Lock Nylon Insert 6-32 119855 x Relay, 24 V 119814
x Steam Port 118103 23 Screw, Rd Hd Self-tapping 6-32xd 012398 x Relay, 12 V 119813
x Steam Port Gasket 099250 24 Screw Slot Hex Washer 8-32 x ¼ 074242 x Terminal Block 088214
x Door Switch 096857 25 Screw Slot Hex Washer 8-32 x d 069773 x Spray Hose 096807
9 Plastisol Boot 101143 26 Phase, Wire 094155 x Water Inlet Hose 125993

10 Valve, Water Inlet Assy, Double 088816 27 Nut, Rotary Shaft Seal 101145 x Motor Capacitor 096813

x PC Board Light & Timer 119817 x PC Board Cover 119806 x Boiler with Insulation 125930
x PC Board, Steamer Control 119801

x - Item not depicted/called out in drawing or photographs

20

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

Electrical Schematics- HY-3E

21

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

Electrical Schematics - HY-5E

22

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

Service Procedures

[FOR PROFESSIONAL TECHNICAL SERVICE PERSONNEL ONLY]

General Information:

The following procedures are based upon having
access to the steamer on all four sides. If the
steamer is installed between other appliances and
there is not enough room on the sides for access,
the steamer must then be pulled out from its position
to gain proper access.

Care should be taken in moving the steamer so as
not to stress or pull on the electrical or water
connections.

WARNING
THERE IS HIGH VOLTAGE INSIDE CONTROL
COMPARTMENTS. DISCONNECT UNIT
BEFORE SERVICING. FAILURE TO DO SO
CAN RESULT IN SERIOUS INJURY OR DEATH.

NOTICE: Refer to the Electrical Schematic Diagram

and the Interconnect Diagram to identify and/or
confirm terminal designations or wire colors.

A. Side Panel - Removal

P/N 123134 - Right Panel
P/N 123135 - Left Panel

1. With a flat blade screw
driver remove two 10-32
screws on the lower
edge and one on the top
edge of the panel. The
panel is retained to the
steamer by spring-like
clips at the rear edge.

2. Once the screws are
removed SLIDE the
panel towards the front.
Do not attempt to PRY
the panel. Once the
panel is free of the rear
clips, it may be lifted off
the top track.

Assembly Tip. When replacing the panel, press the
rear edge inward so that all three clips will be
retained by the back flange. Make sure that the holes
in the panel are in alignment with the tapped holes in

the steamer so that the replacement of the three
screws will be easy and not damaging.

B. Top Panel - Removal

P/N 096777

In order to replace the water drain valve, the
condensate spray nozzle, alternate door switch
location, or the steam generator, the top and left side
of the steamer external cabinet must be removed.
The following procedures are to be used:

1. First, remove the side panel as described in
Section A.

2. Remove the retaining bracket which
prevents the top from sliding forward.

3. The top and side assembly may then be slid
forward and once clear of the retaining clips,
may be lifted off.

Assembly Tip. In replacing the top panel assembly,
make sure that the retaining clip is replaced and
screwed down tight.

C. Support Table (Optional)

P/N 100913

1. The steamer is
supported on a
stainless steel
table. The
steamer is
attached to the
table by four 1/2"
bolts fastened
from below.

2. To remove the
steamer from
table, disconnect
electric, water
and drain lines
from the
steamer. Then
remove the four
bolts.

3. Each leg is
provided with a screw type support post.
These may be extended or retracted by
turning them with a wrench or ChannelLock.
Make sure that all four legs are in tight

23

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

contact with the floor for proper steamer
support.

4. If damaged, these posts may be replaced by
tapping out (on opposites sides of the leg)
the threaded fitting which is friction held in
each stainless steel leg. The stainless steel
leg Optional Support Table and the threaded
fitting are one assembly.

The following parts, devices and assemblies may
be inspected, tested and/or replaced with only
the removal of the right side cover panel:

7. Align the flat of the knob hole with the flat on
the timer shaft. Press the knob firmly onto
the timer shaft.

8. Plug in the wires identified above and
connect the two black wires from the motor
leads.

D. Timer Assembly Timer Fastener Nut

P/N 100983 P/N 101145

1. Shut off power to the
steamer. Remove the
knob from the timer.
Under the knob is a
hexagonal nut which
holds the timer
mechanism to the
steamer. Note that there

Timer Assembly

2. From the left side, unplug the five terminals/
wires (violet, gray, black, tan and white) from
the timer mechanism and unplug the two
black timer motor leads.

3. With a 1/2" open ended wrench, remove the
hex nut holding the timer in place. The timer
may then be removed from inside the
compartment.

is a flat on the timer
shaft which corresponds
to a frictional mounting
hole on the knob.

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

E. Steam Generator Ready Thermostat

P/N 099947

Thermostat is attached to the
steam port by two 6-32
screws.

1. Turn off power to the
steamer.

2. Unplug the two wires
from the thermostat
from the wiring
harness.

3. Using a flat blade screwdriver, remove the
two 6-32 screws holding the thermostat to
the steam port.

To Install

Steam Port and
Ready Thermostat

4. NOTE: Right below the timer shaft, the timer

has a small plastic disk molded into the
case. There is a corresponding hole
punched into the front panel. This hole may
be seen from the inside of the compartment
only when the timer is removed.

To Install:

5. Fit the timer in place making sure that it is
properly placed so that the disc on the timer
fits into the punched hole in the front panel.

6. Once the timer is properly located, tighten
the hex nut so that the timer does not slip or
rotate. Do not over tighten the nut.

4. To install a new thermostat, use a small
amount of heat sink compound (1 drop),
applied to bottom of thermostat. Seat the
thermostat on the steam port and fasten with
the two screws (as above). Apply heat sink
compound to the threads of 6/32 screws to
prevent leaks.

5. Plug the thermostat into the wiring harness.

F. Steam Port Gasket

P/N 118103 (HY-3E) P/N 099250
P/N 125988 (HY-5E)

1. Turn off the power to the steamer.

24

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

2. Remove the large steam hose by loosening
the hose clamp with a 5/16 inch nutdriver
and then removing the hose from the steam
port collar.

3. Remove the 3/4 inch clean hose by
loosening its hose clamp with a 5/16 inch
nutdriver and then removing the hose from
the steam port collar.

4. With a flat blade screwdriver, remove the
two 6-32 screws which hold the thermostat
to the steam port.

5. With a sharp knife or scissor, cut the foil
thermal blanket. Then fold back the foil
blanket to reveal the two 1/4-20 kep nuts,
which hold the steam port to the cavity wall.

6. With a 7/16 inch nutdriver remove the two
kep nuts.

7. Remove the steam port from the threaded
studs.

To Install:

G. Cavity Hose Assembly

Steam Hose (HY-3E) P/N 123867
Steam Hose (HY-5E) P/N 126008
Clean Hose (HY-3E) P/N 101641
Clean Hose (HY-5E) P/N 125954

There is one steam hose installed over the motor
connecting the steam generator to the cavity. There
is a clean hose installed under the motor which
connects the steam generator with the cavity. Either
hose may be replaced using the following method:

8. Apply RTV Clear Silicone Sealant to the
groove of the steam port (or use gasket P/N

099250), then insert the steam port on the
two threaded studs and fasten the two kep
nuts with a 7/16 inch nutdriver. Wipe away
excess sealant from the cavity.

9. Mend the foil thermal blanket, where cut,
with aluminum foil duct tape.

10. Fasten the thermostat with two 6-32 screws.
Apply heat sink compound to the bottom of
thermostat and to the threads of the screws
to prevent leaks. See Section E.

11. Install the 3/4 inch clean hose on the steam
port and fasten with hose clamp.

12. Install large steam hose to steam port and
fasten with hose clamp.

Steam Hose is Mounted Above the Fan Motor,
Clean Hose is Mounted Below

1. Shut off power to the steamer.

2. Using a 5/16 inch nutdriver, loosen the hose
clamp where the hose is attached to the
steam port. Turn and pull the hose to
remove it from the hose collar.

3. Using a 5/16 inch nutdriver, loosen the hose
clamp where the hose is connected to the
steam generator. Turn and pull the hose to
remove it from the hose collar.

4. The hose may be removed.

IMPORTANT. Make sure that the correct part
(and part number) is being used. The hoses are
similar in appearance but are not the same!

Install steam hose over the motor. The clean
hose must be installed under the motor to allow
cleaning liquids to enter the generator.

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

To Install:

25

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

5. Slide the two hose clamps onto the hose and
position the hose adjacent to the steam port
and steam generator.

6. Slide the hose onto the hose collar on the
steam port and at the other end, onto the
steam generator collar. Make sure the hose
is on all the way so that the end of the hose
is against the face of the collars.

7. Slide the hose clamps down so that they are
about 1/8 inch from the end of the hose (at
both ends) and using a 5/16 inch nutdriver,
tighten the hose clamps.

NOTE: Over tightening of hose clamps may cut
the hoses.

H. Fan

P/N 096790

IMPORTANT. Make sure fan has come to a
complete stop before working on it.

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

EVEN WHEN THE UNIT HAS BEEN
DISCONNECTED, DO NOT PUT HANDS OR
TOOLS INTO THE COOKING CHAMBER UNTIL
THE HAN HAS COMPLETELY STOPPED
TURNING.

I. Fan Motor Assembly Motor Insulator

P/N 096740 P/N 094135

Motor Shaft Seal Oil Slinger Washer

1. To remove the fan from the cavity, open the
door and remove the pan support wire rack
from in front of the fan.

2. With a 1/8 inch Allen wrench, loosen the set
screw which holds the fan to the motor shaft.

3. Hold onto the fan, and with a slight rocking
motion pull the fan off the motor shaft.

To Install:

4. Note that the motor shaft has a flat surface.
Position the fan hub on the motor shaft so
that the 1/8 inch Allen set screw is opposite
the flat portion of the motor shaft.

5. Slide the fan onto the motor shaft far enough
so that the motor shaft is at the end of the
fan hub.

6. With a 1/8 inch Allen wrench, tighten the set
screw on the fan.

NOTICE: Advise customer to clean the fan blades
periodically of deposited food grade grease coming
from the foods being cooked. The deposit of such
grease over time could cause the fan blades to
vibrate.

Cavity Fan

P/N 096868 P/N 096831

1. Shut off electrical power to the steamer.

2. From inside the cavity, remove fan using a
1/8 inch Allen wrench as shown in Section H

3. Using a 7/16 inch nutdriver/socket, remove
the four ¼-20 kep nuts holding the motor.
Note that one of the nuts secures the motor
ground strap to the steamer.

26

4. Remove the motor mounting plate to which
the motor is attached.

To Install a New Motor:

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

10. Using this technique, the rubber side of the
oil slinger washer should be in contact with
the plate holder and there should be a space
of approximately 1/16 inch between the
phenolic face of the washer and the motor.

11. Using four hex/slotted 6-32 screws, screw
the motor mounting plate to the motor with
each screw passing through corresponding
holes in the plate seal holder.

12. The entire assembly may now be positioned
on the four threaded stud bolts protruding
from the cavity wall. Fasten the assembly
with the 1/4-20 kep nuts using a 7/16 inch
nut driver. Make sure that the green ground
strap is fastened by one of the kep nuts
securing the motor.

J. Motor Starting Capacitor

P/N 096813

1. Turn off electrical power to the steamer.

Fan Motor Assembly Diagram

5. Make sure the motor insulation board is
installed on the four threaded studs to the
cavity wall

6. Apply Never-Seez on both sides of the
steamer motor seal and the inside hole.
Refer to the Motor Assembly Diagram.

7. Insert the steamer motor seal in the cutout of
the insulator board.

8. To prepare motor for mounting, slide the oil
Slinger washer onto the shaft about 1/2 inch
down the shaft.

IMPORTANT. This washer has two surfaces: A
rubber surface and a phenolic surface. Make
sure the phenolic surface is facing the motor.

9. Install the plate seal holder onto the motor
shaft. Carefully slide the plate seal holder
down the motor shaft until it engages the
slinger washer. Continue moving the plate
seal holder down the motor shaft until the
plate comes to rest on the raised bosses of
the motor casting

2. Loosen the two screws holding the motor
capacitor.

3. Unplug the two terminal wires from the
capacitor. Remove the capacitor.

Fan Motor Capacitor

NOTICE: Make sure that the correct value of
capacitor is used, which is 3 ::fd with a 330 volt
rating.

K. Control Transformer

P/N 106234

1. Turn off power to the steamer.

27

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

Control Transformer

2. Note the position and identity of the
terminals and then remove them from the
control transformer.

3. With a 5/16 inch nutdriver, remove the four
10-32 screws holding the control transformer
to the service tray.

Note: Do not lose lock washers at the ground
wire.

4. Remove control transformer from the service
tray.

To Install:

5. Install the control transformer in the service
tray.

6. Fasten the control transformer to the service
tray with four 10-32 screws using a 5/16 inch
nutdriver.

Note: Ground terminal between lock
washers.

7. Reattach terminals to control transformer.

Electric Heater Assembly - High Limit Thermostat
Switch Box Mounted Above

L. Gasket Heater Element

P/N 042366 P/N 123102 (240 Volt)

High Limit Thermostat

P/N 122009

1. Turn off all power to the steamer.

2. Remove the six terminals and two plugs
from the heating element.

3. With a 1/2 inch socket wrench, remove the
four nuts and lockwashers holding assembly
to generator.

4. Carefully slide the assembly about 2 inches
out of the steam generator.

5. Remove the two 6-32 self tapping sheet
metal screws from the underside of the
thermostat switch.

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

6. Remove the two terminal wires attached to
the thermostat Electric Heater Assembly
switch.

28

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

7. Remove the gasket attached to the steam
generator and discard. Remove heater and
thermostat assembly.

8. The thermostat bulb is fastened to one of the
heater elements by two small hose clamps
or metal straps

9. Remove the clamps or straps holding the
thermostat bulb to the heater.

10. With a 9/16 inch open-ended wrench, loosen
the capillary fitting for the thermostat.

11. Remove the probe, capillary and thermostat
bulb as an assembly.

16. Reconnect the terminal wires to the heater.
Install thermostat switch to bracket with
sheet metal screws.

17. Attach bracket over the two upper threaded
studs before installing nuts.

18. Install four four nuts and lockwashers on
threaded studs, and tighten with a 1/2 inch
socket wrench.

M. High Limit Thermostat (Steam Generator)

P/N 122009

Stainless Steel Clamp

P/N 093482

To Reset: Press red reset button once.

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

Heater Assembly and High Limit Thermostat

To Install:

12. Clamp thermostat bulb to the Number 2
Heater Rod.

13. Apply pipe compound to the thread and
tighten the compression fitting around the
capillary in the threaded hole provided for
this fitting.

CAUTION
DO NOT DAMAGE HEATER OR CRACK THE
CERAMIC SPACERS.

14. Install a new gasket on the steam generator.

15. Insert the entire assembly into the steam
generator. There is an orientation pin so that
the assembly can only be installed one way.
The pin is on the left of the steam generator.
When properly installed, terminals 1, 2 and 3
are on top.

To Remove:

1. Shut off electrical power to the steamer.

2. Remove the heating elements from the
steam generator in accordance with
directions provided in Section L.

3. Using a 7mm nutdriver, loosen two stainless
steel hose clamps holding the thermostat
bulb to the heater element.

4. With a 9/16 inch open ended wrench,
unscrew the thermostat bulb from the heater
plate.

To Install:

5. Apply high temperature pipe compound to
the threads of the new thermostat fitting.
Screw the thermostat fitting into the heater
plate. Tighten with a 9/16 inch open ended
wrench

6. Position the thermostat bulb on top of heater
coil No. 2 (center heater)

7. Position the two stainless steel hose clamps
around BOTH the heater coil and the

29

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

thermostat bulb. Tighten using a 7mm
nutdriver.

8. Tighten the compression nut on the heater
plate using a 5/16 open ended wrench.

N. Steam Generator Probes (High and Low

Water)

P/N 070178

High and Low Water Steam Generator Probes

1. Turn off power to the steamer.

2. Remove right side panel.

8. Replace the wire(s) to the probes by
snapping the fork terminals around the
terminal post. Using a 5/16 inch nutdriver,
tighten the terminal nut.

NOTE: If two probes are to be replaced, either
replace them one at a time or note the color of the
wires attached to the probes. Do not mix them up.

O. Water Inlet Valve - One Way

P/N 100934

1. Turn off power to the steamer. Turn off the
water supply to the steamer. Remove the
water supply hose connection on the rear of
the steamer.

2. Remove the two 10-32 truss head screws
holding the valve support plate to the rear of
the steamer.

3. Remove the plate with the valve attached.

4. Once the valve is outside the steamer
cabinet, note the position and identity of the
terminals and remove the four terminals to
the valve.

5. With a 7mm nut driver, loosen the two hose
clamps connected to the valve and remove
the clear Tycon water hose and the black
condensate spray hose from the valve.

3. Slide back the rubber "boots" covering the
probe terminals to expose the terminals
wires.

4. With a 5/16 inch nutdriver LOOSEN, but do
not remove the nuts holding the wire(s) on
the probe terminal(s).

5. The wires are connected to wire fork
terminals. These will “snap" on and off the
terminal post. "Un-snap" them by gently
pulling on the terminal.

6. Using a 13/16 inch open ended wrench, turn
the probe counter-clockwise to remove.
Clean or replace.

To Install:

7. Apply high temperature pipe compound to
the probe and screw it in by hand. Using a
13/16 inch open ended wrench, tighten the
probe into the fitting.

6. Remove the two 8 -32 screws holding the
valve to the plate, and remove valve.

To Install:

7. Fasten the new valve to the support plate
using two 8-32 screws.

8. Attach the waterfill clear hose to the bottom
outlet of the valve with the hose clamp.

9. Attach the condensate spray hose to the top
outlet of the valve with the hose clamp.

IMPORTANT. Do not over tighten the hose
clamps as this may cut the hose.

10. Attach the four terminals to the valve.

11. Tip the plate into position and fasten plate to
rear of the steamer cabinet with the two 10­32 truss head screws.

30

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

10. Plug the electrical leads of the valve into the
wiring harness. Connect steamer to branch
circuit, and turn on power.

To Test:

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

P. Steam Generator Drain Valve

P/N 071234

1. Turn off power and disconnect steamer from
branch circuit. Remove right side panel and
top left side/cover.

2. With a 5/16 inch nutdriver, remove the two
10-32 screws holding the valve bracket to
the steamer base on right side of unit.

3. The steam generator drain valve is located
UNDER the cavity and all work should be
done from the left side of the steamer (as
viewed from the front).

4. Using a 7mm nutdriver or spring clamp
pliers, disconnect ONE END of the drain
hose by loosening the drain hose clamp
from the drain elbow coming from the cavity
drain. Remove clamp.

5. Unplug and disconnect the valve electrical
wires.

6. Slide the valve support bracket out from
under the steam generator with the valve
attached to it. Allow the silicone hose to
leave the valve.

Operate steamer and allow steam generator to fill.
Check for leaks and observe if drain valve fully
closes. Turn off steamer and observe that drain
valve opens and the steam generator drains.

11. Reinstall top/left side cover.

Q. Steam Generator

P/N 096836

1. Shut off power to the steamer, drain steam
generator of all water. Remove right side
panel and top/left side cover.

2. Remove the bracket of the high limit
thermostat switch and remove the two wires
which connect the unit to the wiring harness.
Leave thermostat attached to steam
generator.

3. Remove the two 8-32 screws which hold the
water fill valve mounting plate to the steamer
back.

4. Remove back panel by removing the six 10­32 truss head screws

5. Using a small adjustable wrench, remove
the drain hose brass compression nut

6. Using a 5/16 nutdriver, loosen the clamps
holding steam and cleanout hoses. Detach
hoses from generator.

7. Remove the two 10-32 screws from the
valve bracket, then remove valve from the
bracket.

To Install:

8. Attach new drain valve to valve bracket. Pull
silicone hose through drain valve and install
hose clamp over one end of the exposed
hose and attach hose to drain elbow.

9. Install and tighten valve mounting bracket
with two 10-32 screws. Be sure silicone hose
is properly aligned and does not have any
kinks, bends and/or twists in it.

7. Remove the two water level probe terminals
as indicated in Section N.

8. Loosen hose clamp for drain hose under
cavity in order to gain access to the two 1/4­20 kep nuts on the left side of the steam
generator.

9. With an adjustable wrench, loosen the clamp
holding the water inlet hose to steam
generator. Remove hose from steam
generator.

10. Remove the four 1/4-20 kep nuts holding the
steam generator in position.

31

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

11. Remove steam generator from rear of
steamer by lifting steam generator up and
out.

To Install:

12. Transfer all fittings, heater element, safety
valve, high and low water level probes to
new steam generator from old generator or
use new fittings as needed. Refit the
insulation on generator.

13. Carefully wrap the thermal blanket onto the
steam generator. Make sure it fits snugly,
with no air spaces between the blanket and
the steam generator. Fasten seams with alu­minum duct tape.

14. Fit the steam generator into position from
the back of the steamer. Fasten the steam
generator using the four 1/4-20 kep nuts.

15. Connect all hoses to the steam generator
fittings and tighten their respective hose
clamps.

3. Inspect door gasket for signs of cuts or other
defects which may impair its function.
Replace if necessary. See Section U.

To Install:

4. To install the door, apply NEVER-SEEZ
lubricant to hinge pin. Align door with hinge
and insert hinge pin, or apply service
removable Locktite 242 to the door-to-hinge
bolts, then install door and mounting bolts.
Do NOT tighten mounting bolts at this time.

5. Place a piece of masking tape over the door
pin (bullet) hole in the door/U-channel.

6. Close the door until the door pin just
penetrates the masking tape. Make sure the
door pin contacts only the door latch spring.

7. If door pin does not strike the center of the
masking tape or spring hole in the U­channel, loosen the hinge-to-steamer bolts
and align the door to the door pin. Tighten
hinge-to-steamer mounting bolts.

16. Connect the probe terminals to the high and
low level probes. Make sure the rubber
boots are securely positioned on the
terminals after connection.

17. Connect the high temperature thermostat
housing to the steamer bracket.

R. Door Removal/Installation/Alignment

P/N 094150

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

1. To remove the door, turn off the steamer
power and allow it to cool. Then, remove
door by supporting the weight of the door
and remove hinge pin.

2. Place the door on a flat, clean table or
similar support, with Steamer Door gasket
facing up. Be careful not to scratch door
surface.

8. You should be able to pull a piece of paper
smoothly between the gasket and steamer
cavity with the door closed. To adjust the
hinge side, loosen the door-to-hinge bolts
and align the door gasket with the steamer
cavity. Tighten the door-to-hinge mounting
bolts. To adjust the bullet side, refer to
Section X.

9. Operate steamer and check for leaks.

S. Door Switch

P/N 096857

WARNING
DISCONNECT THE POWER SUPPLY BEFORE
BEGINNING ANY SERVICE PROCEDURE.

1. From the right side of the steamer with panel
removed, unplug the door switch from the
electrical board.

2. The switch (for normal door opening) is held
in place with two small screws. With a
slotted screwdriver, remove these screws
and the switch may be removed.

32

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

3. If the door has been reversed and the switch
must be removed and replaced, refer to the
top panel removal in Section B and then
remove the switch as above.

T. Door Reversing Procedures

Refer to Sections S and V for additional instructions.

1. Turn off steamer power and allow steamer to
cool.

2. To remove door, support door while
removing hinge-to-steamer bolts.

3. Place door with hinge on a flat, clean table
(or similar support), with the gasket facing
up. Be careful not to scratch door surface.

4. Note and record distance between lock nut
and end of door locking pin (bullet). This
information will be needed during bullet
installation in Step 6.

5. Loosen lock nut, then remove door bullet
and lock nut.

6. Coat bullet threads with a few drops of
Locktite 222. Install bullet and lock nut
directly across steamer cavity from old bullet
location. Install these two items so that lock
nut to end of bullet distance is approximately
the same as measured in Step 4.

7. Remove the two screws from above and
below the old bullet location and install them
above and below the new bullet location.

8. Remove screws and U-channel from the
door. Take magnet and block assembly from
present location and place it at the opposite
end of the door channel, with magnet facing
outward from the door.

9. Remove door handle screws and door
handle from cam..

10. Apply NEVER-SEEZ high temperature (1800
degrees F) anti-seize and lubricating
compound to the cam and a few drops of
Locktite 242 to door handle screw threads.

11. Turn handle and cam 180-degrees from
their original positions and install them on
the door with screws. Be sure handle and
cam move smoothly.

spring in U-channel open with a screwdriver
or similar tool, and install U-channel.

13. Check operation of the cam. Push up on the
door handle and check if the spring opens. If
the spring does not open, cam and spring
are NOT correctly aligned and problem must
be corrected.

14. Apply a light amount of Locktite 242 to
screws, then install screws.

15. Apply Locktite 242 to the hinge-to-steamer
bolts, then install door and hinge mounting
bolts. Do NOT tighten mounting bolts at this
time.

16. Align door to steamer. Refer to Section R.

17. IMPORTANT. When the door is reversed,
the alternate door switch (installed at time of
manufacture) must be connected to the
circuit.

18. From the right side access to the upper
portion of the steamer, disconnect the two
leads of the door switch.

19. The wires for the alternate door switch may
be found under the cavity. Connect the two
wires from the switch to the electrical board.

20. Close steamer door and operate steamer. If
fan does not operate, check location of door
magnet and try operation again. If fan
operation problem still exists, refer to
Section S.

21. With the door closed and the steamer in the
ON position, or with the timer running, the
GREEN/READY light should come on.

22. Allow steamer to operate for approximately
five minutes, and then check for leaks. If
there are no leaks, the steamer is ready for
operation. If there are leaks around the door,
recheck door alignment, and if necessary,
door gasket installation.

U. Door Gasket

P/N 094147

1. To install, turn off steamer, and allow to cool.

2. Remove the door using one of the following:

12. Be sure door handle and door cam is in the
DOWN position. Turn U-channel 180­degrees from its original position, hold door

a) Support door weight and remove hinge

pin, or

33

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

b) Support weight of the door and remove

the two door-to-hinge bolts. Refer to
Section R for more instructions.

4. Apply a high temperature (922 degrees C)
anti-seize and lubricating compound to the
door cam and Locktite 242 to the door
handle screw threads.

3. Position door on flat, clean workbench,
smooth table or similar support so that the
door front is lying flat, with its handle hanging
over the edge of the bench. Be careful not to

scratch the door.

4. Remove inner door panel. Using a flat blade
screwdriver, remove the four truss-head
screws holding the panel in place.

5. Remove and discard gasket.

6. Clean back of the inner door panel. Be sure
old sealant is completely removed.

7. Apply a high temperature silicone sealant,
such as RTV 159 or equivalent, to the four
door spacers

8. Install new gasket around outer door panel
on insulation board. Be sure the inner door
panel flange is fully inserted into the gasket
groove.

9. Apply Locktite 242 to inner panel mounting
screws and tighten.

10. Align door with hinge and insert hinge pin
OR apply Locktite 242 to the door-to-hinge
bolts, then install door and mounting bolts.
Do NOT tighten mounting bolts. Refer to
Section X for more instructions.

V. Door Handle Magnet and Block Assembly

P/N 070123 P/N 069762
Screws U-Channel Assembly
P/N 005764 P/N 094144

Door Cam Outer Door Panel

P/N 074252 P/N 094140

Inner Door Panel

P/N 094141

Door Insulation Board

P/N 094192

1. Turn off steamer and allow it to cool.

5. Assemble door cam to handle with screws
and tighten.

6. Be sure door handle is in the DOWN
position. Hold U-channel door spring open
with a screwdriver or similar tool, then install
the U-channel. Do NOT install screws at this
time.

7. Check operation of the cam and door spring.
Push up on the door handle and check if
spring opens. If the spring does not open,
the cam and spring are not correctly aligned
and the problem must be corrected.

8. Apply a light amount of Locktite 242 to
screws, then install screws to U-Channel
and tighten.

W. Door Spring

P/N 078911

1. Turn off steamer and allow it to cool.

2. With flat blade screwdriver, remove two 8-32
truss head screws on U-channel. Remove
U-channel from door.

3. Carefully remove retaining ring from one end
of spring support pin, then remove the pin by
moving the pin left or right.

4. With a 3/8 inch nutdriver, remove the 10-32
kep nut, lift square plate, then remove the
spring.

To Install:

5. Apply a high temperature (922 degrees C)
anti-seize, lubricating compound on the
bottom of the U-Channel surface that
contacts with the spring.

6. Install spring onto brass roller, then place
square plate over spring.

2. With flat blade screwdriver, remove the two
8-32 truss head screws on the U-channel.
Remove U-channel from the door.

3. Remove screws, door handle, and cam.

7. Apply Locktite 242 to kep nut and install kep
nut.

8. Install spring support pin, then push the
retaining ring onto the pin using a
screwdriver.

34

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

9. Hold door spring open with a screwdriver or
similar tool, hold door handle in the DOWN
position and install the U-channel, top end
first - then lower channel into position. Check
that spring opens when door handle is
pushed up.

10. Apply Locktite 242 to U-channel mounting
screws, then install the screws.

X. Door Locking Pin Pin Lock Nut

P/N 078914 P/N 003823

1. Turn off steamer and allow it to cool.

2. Note and record the distance between the
lock nut and the end of the (bullet shaped)
door locking pin. This information is
important and will be needed for installation.

3. Loosen lock nut and remove lock nut and
door pin (bullet) from front panel.

4. To install new door locking pin, coat locking
pin threads with a few drops of Locktite 222.

5. Install locking pin and lock nut. The lock nut
to end-of-bullet distance should be
approximately the same as measured
above, in Step 2.

Y. Alternate Door Switch Location

The alternate door switch is located on the left side
of the steamer as viewed from the front. In order to
gain access to the switch for replacement purposes
only, it is required to remove the right panel and
top/left cover.

The leads for this alternate switch are provided
adjacent to the wiring harness on the right side of the
steamer. Refer to Section B and S for more
instructions.

35

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

Service Log

Model No.
Serial No.
Date Purchased
Purchase Order No.

Date Maintenance Performed Performed by

Purchased From
Location
Date Installed
For Service Call

36

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

Limited Warranty To Commercial Purchasers*

(for Areas Outside of the U.S. and Canada)

Groen Foodservice Equipment ("Groen Equipment") has been skillfully manufactured, carefully inspected and
packaged to meet rigid standards of excellence. Groen warrants its Equipment to be free from defects in material
and workmanship for twelve months from date of installation or eighteen months from date of shipment with the
following conditions and subject to the following limitations.

I. This parts warranty is limited to Groen Equipment sold to the original commercial purchaser/users (but not

original equipment manufacturers), at its original place of installation, in areas outside the U.S. and
Canada.

II. Damage during shipment is to be reported to the carrier, is not covered under this warranty, and is the

sole responsibility of the purchaser/user.

III. Groen, or an authorized service representative, will repair or replace parts, at Groen's sole election, for

any Groen Equipment, including but not limited to, draw-off valves, safety valves, gas and electric
components, found to be defective during the warranty period.

IV. This warranty does not cover boiler maintenance, calibration, or periodic adjustments as specified in

operating instructions or manuals, and consumable parts such as scraper blades, gaskets, packing, etc.,
or labor costs incurred for removal of adjacent equipment or objects to gain access to Groen Equipment.
This warranty does not cover defects caused by improper installation, abuse, careless operation, or
improper maintenance of equipment. This warranty does not cover damage caused by poor water quality
or improper boiler maintenance.

v. THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR

IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, EACH OF WHICH IS HEREBY EXPRESSLY DISCLAIMED. THE REMEDIES
DESCRIBED ABOVE ARE EXCLUSIVE AND IN NO EVENT SHALL GROEN BE LIABLE FOR SPECIAL,
CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR THE BREACH OR DELAY IN PERFORMANCE
OF THIS WARRANTY.

VI. Groen Equipment is for commercial use only. If sold as a component of another (O.E.M.) manufacturer's

equipment or if used as a consumer product, such Equipment is sold AS IS and without any warranty.

* (Covers All Food Service Equipment Ordered After October 1,1995)

37

1055 Mendell Davis Drive
Jackson, MS 39272
Telephone [phone]
Fax [phone]

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

(Revised 6/99)

Part Number 128174