IMPORTANT INFORMATION
IMPORTANT INFORMATION �
IMPORTANT INFORMATION IMPORTANT INFORMATION
OPERATOR MANUAL
OPERATOR MANUAL OM-DHS
Part Number 137920 Rev. B
Part Number 137920-Rev A. DOMESTIC
� KEEP FOR OPERATOR
KEEP FOR OPERATOR �
KEEP FOR OPERATOR KEEP FOR OPERATOR
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� IMPORTANT INFORMATION
IMPORTANT INFORMATION
IMPORTANT INFORMATION IMPORTANT INFORMATION
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MODEL: DHS
Low Height Steam
Jacketed Kettle
[with Standard Electronic Ignition]
Self-Contained
Stainless Steel
Gas Heated
Floor Mounted
Tilting
®®
THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE. READ,
UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND WARNINGS CONTAINED
IN THIS MANUAL.
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND
LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
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 OFF 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.
OM-DHS
OMS-DHS
IMPORTANT — READ FIRST — IMPORTANT
WARNING: FAILURE TO DISCONNECT POWER BEFORE SERVICING COULD RESULT IN
ELECTROCUTION AND DEATH.
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.
WARNING: THE UNIT MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH
GAS, ELECTRICITY AND PLUMBING. UNIT MUST BE INSTALLED IN
ACCORDANCE WITH ALL APPLICABLE CODES.
WARNING: DO NOT ATTACH THE UNIT TO A TYPE “B” VENT. IT COULD CAUSE FIRE OR
PROPERTY DAMAGE.
WARNING: DO NOT CONNECT ANY PIPING TO THE PRESSURE RELIEF VALVE. IT MUST BE
FREE TO VENT STEAM AS NEEDED. TO AVOID BURNS FROM THE VENTED
STEAM THE VALVE DISCHARGE SHOULD POINT DOWNWARD. IMPROPER
INSTALLATION WILL VOID WARRANTY.
DANGER: ELECTRICALLY GROUND THE UNIT AT THE TERMINAL PROVIDED. FAILURE TO
GROUND THE UNIT COULD RESULT IN ELECTROCUTION AND DEATH.
CAUTION: BE SURE ALL OPERATORS READ, UNDERSTAND AND FOLLOW THE OPERATING
INSTRUCTIONS, CAUTIONS AND SAFETY INSTRUCTIONS CONTAINED IN THIS
MANUAL.
CAUTION: DO NOT OVERFILL THE KETTLE WHEN COOKING, HOLDING OR CLEANING.
KEEP LIQUIDS A MINIMUM OF 2-3" (5-8 CM) BELOW THE KETTLE BODY RIM TO
ALLOW CLEARANCE FOR STIRRING, BOILING AND SAFE TRANSFER OF
PRODUCT.
CAUTION: KEEP FLOORS IN FRONT OF KETTLE WORK AREA CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN IMMEDIATELY TO AVOID SLIPS OR FALLS.
WARNING: KEEP WATER AND SOLUTIONS OUT OF CONTROLS AND BURNERS. NEVER USE
A HIGH PRESSURE HOSE TO CLEAN KETTLE SURFACES.
CAUTION: MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCOUS MEMBRANES
AND CLOTHING. TAKE PRECAUTIONS: WEAR RUBBER GLOVES, GOGGLES OR
FACE SHIELD AND PROTECTIVE CLOTHING. CAREFULLY READ WARNINGS
AND FOLLOW DIRECTIONS ON CLEANER LABELS .
WARNING: DO NOT STAND ON OR APPLY UNNECESSARY WEIGHT OR PRESSURE ON THE
KETTLE FRONT OR POURING LIP. THIS COULD RESULT IN THE OVERLOAD AND
FAILURE OF THE TILT MECHANISM, AND POSSIBLE SERIOUS INJURY AND
BURNS TO THE OPERATOR AND OTHERS.
NOTICE: NEVER LEAVE A SANITIZER IN CONTACT WITH STAINLESS STEEL SURFACES
LONGER THAN 10 MINUTES. LONGER CONTACT CAN CAUSE CORROSION.
WARNING: FAILURE TO PERIODICALLY CHECK PRESSURE RELIEF VALVE OPERATION
COULD RESULT IN PERSONAL INJURY AND/OR DAMAGE TO EQUIPMENT.
WARNING: WHEN TESTING, AVOID EXPOSURE TO THE STEAM BLOWING OUT OF THE
PRESSURE RELIEF VALVE. DIRECT CONTACT COULD RESULT IN SEVERE
BURNS.
WARNING: TO AVOID INJURY, READ AND FOLLOW ALL PRECAUTIONS STATED ON THE
LABEL OF THE WATER TREATMENT COMPOUND.
WARNING: BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC
POWER SUPPLY AND CLOSE THE MAIN GAS VALVE. ALLOW FIVE MINUTES FOR
GAS TO VENT.
CAUTION: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN
OR AUTHORIZED DISTRIBUTORS CAN CAUSE INJURY TO THE OPERATOR AND
DAMAGE TO THE EQUIPMENT AND WILL VOID ALL WARRANTIES.
WARNING: KEEP AREA AROUND KETTLE FREE AND CLEAR OF ALL COMBUSTIBLE
MATERIALS. FAILURE TO DO SO COULD RESULT IN FIRE OR PROPERTY
DAMAGE.
CAUTION: HEATING AN EMPTY KETTLE MAY CAUSE THE RELEASE OF STEAM FROM THE
PRESSURE RELIEF VALVE.
IMPORTANT: SERVICE PERFORMED BY OTHER THAN FACTORY AUTHORIZED PERSONNEL
WILL VOID ALL WARRANTIES.
2
OM-DHS
WARNING: THIS UNIT IS INTENDED FOR USE IN THE COMMERCIAL HEATING, COOKING AND
HOLDING OF WATER AND FOOD PRODUCTS, PER THE INSTRUCTIONS CONTAINED
IN THIS MANUAL. ANY OTHER USE COULD RESULT IN SERIOUS PERSONAL
INJURY OR DAMAGE TO THE EQUIPMENT AND WILL VOID WARRANTY.
WARNING: AVOID ALL DIRECT CONTACT WITH HOT EQUIPMENT SURFACES. DIRECT SKIN
CONTACT COULD RESULT IN SEVERE BURNS.
WARNING: AVOID ALL DIRECT CONTACT WITH HOT FOOD OR WATER IN THE KETTLE.
DIRECT CONTACT COULD RESULT IN SEVERE BURNS.
WARNING: WHEN TILTING KETTLE FOR PRODUCT TRANSFER:
1) USE CONTAINER DEEP ENOUGH TO CONTAIN AND MINIMIZE SPLASHING.
2) PLACE CONTAINER ON STABLE, FLAT SURFACE, AS CLOSE TO KETTLE AS
POSSIBLE.
3) DO NOT OVER FILL CONTAINER. AVOID DIRECT SKIN CONTACT WITH HOT
CONTAINER AND ITS CONTENTS.
3
OM-DHS
OMS-DHS
Table of Contents
IMPORTANT OPERATOR WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
EQUIPMENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSPECTION & UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INSTALLATION & INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
ELECTRICAL SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
SERVICE LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
REFERENCES
CSA INTERNATIONAL AMERICAN NATIONAL STANDARDS INST.,INC
8501 East Pleasant Valley Road 1430 Broadway
Cleveland, Ohio 44131 New York, New York 10018
NATIONAL SANITATION FOUNDATION Z223.1-1984-National Fuel Gas Code
3475 Plymouth Road Z21.30 - Installation Gas Appliances & Piping
Ann Arbor, Michigan 48106
KLENZADE SALES CENTER ECOLAB, Inc. NATIONAL FIRE PROTECTION ASSOCIATION
370 Wabasha 60 Battery March Park
St. Paul, Minnesota 55102 Quincy, Massachusetts 02269
ZEP MANUFACTURING COMPANY NFPA/54-Installation Gas Appliances & Piping
1310-T Seaboard Industrial Boulevard NFPA/70-The National Electric Code
Atlanta, Georgia 30318
OMS-DHS
Table of Contents
IMPORTANT OPERATOR WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
EQUIPMENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSPECTION & UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INSTALLATION & INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
ELECTRICAL SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
SERVICE LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
REFERENCES
CSA INTERNATIONAL AMERICAN NATIONAL STANDARDS INST.,INC
8501 East Pleasant Valley Road 1430 Broadway
Cleveland, Ohio 44131 New York, New York 10018
NATIONAL SANITATION FOUNDATION Z223.1-1984-National Fuel Gas Code
3475 Plymouth Road Z21.30 - Installation Gas Appliances & Piping
Ann Arbor, Michigan 48106
KLENZADE SALES CENTER ECOLAB, Inc. NATIONAL FIRE PROTECTION ASSOCIATION
370 Wabasha 60 Battery March Park
St. Paul, Minnesota 55102 Quincy, Massachusetts 02269
ZEP MANUFACTURING COMPANY NFPA/54-Installation Gas Appliances & Piping
1310-T Seaboard Industrial Boulevard NFPA/70-The National Electric Code
Atlanta, Georgia 30318
NSF INTERNATIONAL
789 N. Dixboro Rd.
P.O. Box 130140
Ann Arbor, Michigan 48113-0140
4
Equipment Description
The Groen DHS is a floor-mounted, tilting, steam
jacketed kettle with a thermostatically controlled,
self-contained, gas-heated steam source and
appropriate controls, mounted on a sturdy base.
The Model DHS is available in 40 gallon
capacities.
The body of the DHS Kettle is constructed of
stainless steel, welded into one solid piece. The
kettle is furnished with a reinforced rim and a
butterfly shaped pouring lip. It has a steam jacket
which is ASME shop inspected and registered
with the national board for working pressures up
to 50 PSI. Kettle finish is 180 emery grit on the
inside and bright high buff polish on the outside.
The kettle is tilted with a hand crank to pour out
its contents. Stainless steel panels enclose the
controls and the base. Four stainless steel
tubular legs support the unit. Bullet feet on
each of the legs can be adjusted to level the
kettle. Standard DHT units include a two inch
tangent draw-off valve.
The self-contained steam source is heated by
propane or natural gas. Electronic spark to pilot
ignition is standard for all units.
The kettle is filled at the factory with water which
contains rust inhibitors. The steam source
provides kettle temperatures of 150º to
approximately 295ºF (65 to 150ºC). Unit
controls include a thermostat, pressure gauge,
safety valve, pressure limit control, low water
cut-off, power switch and gas regulator valve.
The gas supply shuts off automatically when the
kettle is tilted.
The unit must be specified for use with natural or
propane gas. Service connections for gas and
electricity are required. Standard power supply is
115 Volt.
KETTLE CHARACTERISTICS
DHS-40 DHS/T-40
Kettle Capacity
40 gal.
(150 ltr)
40 gal.
(150 ltr)
Tangent drawoff No Yes
Jacket Capacity
14 gal.
(53 ltr)
14 gal.
(53 ltr)
Kettle Body
Diameter
30 in.
(762 mcm)
30 in.
(762 mm)
Base Width
47 in.
(1194 mm)
47 in.
(1194 mm)
Base Front to
Back
29
(736 mm)
29
(736 mm)
Firing Rate - per
hour
150,000 BTU 150,000 BTU
Energy into
Product per hr.
82,000 BTU 82,000 BTU
Options available with listed models are:
1. Two inch tangent drawoff*
2. Strainers, solid disk (P/N 013783), ¼” (P/N
009944) or
c
cc
c ” perforations (P/N 13785).
3. No. 31 lift-off cover(P/N 001116)
4. No. 51 counterbalanced cover w/actuator*
5. Basket Inserts (Tri-BC)
6. Water fill faucets with swing spout (P/N
009054)
7. Kettle Brush Kit (P/N 104278)
8. 316 Stainless steel interior* (Must be
indicated on initial order)
9. Gallon etch marks*
10. Automatic, metered water filler.
11. Powerd agitators (TA/3 or INA/2)*
* Factory-installed options
OM-DHS
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OM-DHS
OMS-DHS
Inspection & Unpacking
The unit will arrive in a heavy shipping carton
and will be bolted or banded to a skid.
Immediately upon receipt, inspect the carton
carefully for exterior damage.
CAUTION
SHIPPING STRAPS ARE UNDER TENSION
AND CAN SNAP BACK WHEN CUT. TAKE
CARE TO AVOID PERSONAL INJURY OR
DAMAGE TO THE UNIT BY STAPLES LEFT
IN THE WALLS OF THE CARTON.
Carefully cut any polyester straps around the
carton and detach the sides of the box from the
skid. Pull the carton up off the unit.
Thoroughly inspect the unit for hidden damage.
Report any shipping damage or incorrect
shipments to the delivery agent.
Write down the model number, serial number,
and installation date, and retain this information
for future reference. Space for these entries is
provided at the top of the Service Log at the
back of this manual. Keep this manual on file
and available for operators to use.
CAUTION
THIS UNIT WEIGHS BETWEEN 535 AND
880 POUNDS (245 TO 400 Kg) DEPENDING
ON SIZE. INSTALLER SHOULD USE
PROPER EQUIPMENT TO LIFT SAFELY.
When installation is to begin, carefully cut any
straps which hold the unit on the skid. Lift the
unit straight up off the skid. Examine packing
materials to be sure loose parts are not
discarded with the materials.
6
The open end of the pop safety valve elbow
must face downward.
Installation &Initial Start-Up
For efficient performance the DH kettle must be
installed in a well-ventilated area. Items which might
restrict or obstruct the flow of air for combustion and
ventilation must be removed. The area directly
around the appliance must be free of combustible
materials.
WARNING
THE KETTLE MUST BE INSTALLED BY
PERSONNEL QUALIFIED TO WORK WITH
ELECTRICITY AND PLUMBING. IMPROPER
INSTALLATION CAN RESULT IN INJURY TO
PE RS O N N E L AN D / OR D A M A GE T O
EQUIPMENT.
1. Installation on combustible floors is allowed.
Rear clearance of 10 inches and two inches at
both sides is required for both combustible and
non-combustible construction. A 10" clearance
or access on the right side is recommended for
service.
2. The installation must conform with local codes or
the American National Standards Z223.1(current edition) National Fuel Gas Code. The
kettle should be installed in an adequately
ventilated room with provision for adequate air
supply. The ventilation employ must employ a
vent hood and exhaust fan with no direct
connection between the vent duct and the kettle
flue. Do not obstruct the flue or vent duct after
installation.
3. Set the kettle in place and level it using a spirit
level on the bar rim, by turning the bullet feet to
adjust leg length. Allow clearance around the
unit for cleaning, maintenance and service.
Clearances For DHS-40
Required Recommended
Left Side 6" 6"
Right Side 6” 10" (for service)
Rear 10" 10" (for tilting)
4. Complete the piping to the gas service main with
½” line or approved equivalent.
5. For standard units, provide 115 vac, 60 Hz,
single phase 5 AMP electrical service. Local
codes and/or The National Electrical Code
should be observed in accordance with
ANSI/NFPA 70 - (current edition). Use the wiring
diagram inside the service panel and in this
manual.
6. Bring electrical service through the entrance at
the rear of the support housing with a ½ inch
conduit connector. Make a watertight connection
with the incoming lines, utilizing the water
resistant conduit fitting provided on the unit.
DANGER
ELECTRICALLY GROUND THE UNIT AT THE
TERMINAL PROVIDED. FAILURE TO GROUND
UNIT COULD RESULT IN ELECTROCUTION
AND DEATH.
7. Electrically ground the unit at the terminal
provided.
8. After the kettle has been connected to the gas
supply, check all gas joints for leaks. DO NOT
USE FLAME TO CHECK FOR LEAKS. A thick
soap solution or electronic gas leak detector
should be employed.
9. PRESSURE TEST WARNING
a) Test pressure exceeding ½ PSIG (3.45kPa).
During pressure testing of the gas supply
piping system at pressures exceeding ½ ,
the appliance and its individual shutoff valve
Must be disconnected from the gas supply
b)Test pressure equal to or less than ½ PSIG
(3.45kPa.) During pressure testing of the gas
supply piping system at pressures equal to or
less than ½ PSIG, the kettle must be isolated
from the gas supply piping system by closing
Its individual manual shutoff valve.
10. Make sure the water level is correct in the jacket,
by confirming that the level is near the middle of
the sight glass. If the water level is low, follow
the instructions in Jacket Filling and Water
Treatment in the maintenance section of this
manual.
OM-DHS
7
OM-DHS
OMS-DHS
8
WARNING
DO NOT CONNECT ANY PIPING TO THE
PRESSURE RELIEF VALVE. THE VALVE MUST
BE FREE TO VENT STEAM AS NEEDED.
IMPROPER INSTALLATION WILL VOID THE
WARRANTY!
THE ELBOW ATTACHED TO THE SAFETY
VALVE MUST POINT TO THE FLOOR.
When attaching the draw-off valve hand-tighten the
nut.
WARNING
D O N O T S T A N D O N O R A P P L Y
UNNECESSARY WEIGHT OR PRESSURE ON
THE KETTLE FRONT OR POURING LIP. THIS
COULD RESULT IN THE OVERLOAD AND
FAILURE OF THE TILT MECHANISM, AND
POSSIBLE SERIOUS INJURY AND BURNS TO
THE OPERATOR AND OTHERS.
11. The open end of the elbow on the outlet of the
pressure relief valve must face downward. If it
does not, turn it to the correct position.
12. (For units with optional tangent drawoff).Assemble the tangent draw-off by placing the
large nut over the draw-off valve and inserting it
into the draw-off tube. ONLY HAND-TIGHTEN
THE NUT to complete installation.
Now that the kettle has been installed, you should
test to ensure that it is operating correctly.
1. Remove literature and packing materials from
inside and outside of the unit.
2. If the unit is equipped with a draw-off valve
(product outlet), clean out any material which
might clog or damage the draw-off.
3. Confirm that the tilting mechanism is operating
properly by tilting the kettle through its full range.
Then return the kettle to the upright position.
4. Turn on the electrical service to the unit.
5. Pour 1-2 quarts of water into the kettle.
6. Following “To Start Kettle” instructions in the
“Operation” section (Page 9), begin heating the
water at the highest thermostat setting. The heat
indicator light should come on, and heating
should continue until the water boils.
If the unit functions as described it is ready for use. If
it does not function as described, contact your local
Groen Certified Service Agency.
Correct Water Level
8
Operation
A. Controls
Operator controls for the DHS kettle are:
1. Manual gas valve (on gas line behind the unit),
which controls the supply of gas from the main to
the unit.
2. On-Off (Toggle) Switch. This controls the supply
of electric power to the control circuits.
3. Thermostat dial, which turns the thermostat on or
off, and sets the kettle temperature.
4. Tilting crank, used to tilt the kettle body.
5. Indicator Lights to alert operator of unit
conditions:
a. Power On Indicator - shows that the unit is
turned on
b. Heat Indicator - indicates that main gas is on
to produce steam in the kettle jacket.
c. Low Water indicator - shows that jacket
water is low
6. Unit gas pressure regulator adjustment - located
behind the access door in the kettle skirt.
B. Operating Instructions
1. To Start Kettle Heating:
a. EVERY DAY make sure that the jacket water
level in the middle of the sight glass. If the
level is too low, see “Jacket Filling and
Water Treatment” on page 13.
b. Check the pressure/vacuum gauge. If the
gauge does not show 20 to 30 inches of
mercury (Hg) vacuum (that is a reading of 20
to 30 below 0 atmospheric pressure), see
“Jacket Vacuum” on page 13.
c. Do not attempt to light any burner with a
flame.
d. Turn the manual gas valve ON (align handle
with gas line).
e. Turn toggle (on-off) switch ON. The
electronic ignition will attempt to light the pilot
for 90 seconds, or until it is lit. Once lit
proceed to step two.
f. Turn thermostat to desired setting. The main
gas burner will ignite, and will cycle to
maintain the set temperature. The heat
indicator light will come on.
g. If the unit does not light, turn it off and wait
five minutes. Then follow the instructions
again.
2. To Empty Kettle Or To Transfer Product:
a. To tilt the body of the kettle forward, turn the
hand crank on the front of the cabinet
counter-clockwise. The body will stay in the
position it holds when you stop cranking. To
return the kettle body to its upright position,
turn the crank clockwise.
b. Product may also be transferred by means of
the optional draw-off valve, if the kettle is so
equipped.
3. To Stop Kettle Heating:
a. Turn thermostat dial to OFF.
b. Turn toggle switch to OFF.
c. For a prolonged shut-down:
1. Follow the procedure above.
2. Turn the manual gas valve off (handle at
right angles to gas line).
OM-DHS
9
OM-DHS
OMS-DHS
3. Disconnect electric power from the unit.
WARNING
WHEN TILTING KETTLE:
1) WEAR PROTECTIVE OVEN MITT AND
PROTECTIVE APRON.
2) USE DEEP CONTAINER TO CONTAIN
AND MINIMIZE PRODUCT SPLASHING.
3) PLACE CONTAINER ON STABLE,
FLAT SURFACE, AS CLOSE TO
KETTLE AS POSSIBLE.
4) STAND TO RIGHT OF KETTLE WHILE
POURING — NOT DIRECTLY IN POUR
PATH OF HOT CONTENTS.
5) P OU R S L O W L Y , M AI N T A IN IN G
CONTROL OF KETTLE, AND RETURN
KETTLE BODY TO UPRIGHT POSITION
AFTER CONTAINER IS FILLED OR
TRANSFER IS COMPLETE.
6) DO NOT OVERFILL CONTAINER.
AVOID SKIN CONTACT WITH HOT
CONTAINER AND ITS CONTENTS.
4. To Relight Kettle
a. Close main gas supply valve.
b. Set on-off switch to OFF.
c. Set thermostat to OFF.
d. Wait five minutes, then proceed as directed
under To Start Kettle Heating.
5. If Power Fails:
a. Do not attempt to operate the unit until
electric power is restored.
b. When power comes back on, follow
directions “To Start Kettle,” above.
C. Use of Common Accessories
1. Lift-Off or Counterbalanced Cover
As with stock pot cooking, an optional cover can
speed up the heating of water and food products.
It helps retain heat and reduces the heat and
humidity in the kitchen. A cover can reduce
some product cook times and help maintain the
temperature, color and texture of products held
or simmered for longer periods.
Be sure the handle is secure on the lift-off cover
before using. ALWAYS use the handle to place
or remove cover from the kettle. Wear protective
oven mitts and apron
When putting a lift-off cover on the kettle,
position it on top of kettle rim, with its flat edge
facing the pouring lip.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES AND HOT FOOD OR WATER
IN THE KETTLE. DIRECT CONTACT
COULD RESULT IN SEVERE BURNS.
When removing a lift-off cover:
a. Firmly grasp the handle, and lift the rear
edge (farthest from operator) 1-2” (3-5 cm)
to allow steam and water vapor to escape.
Wait 2-3 seconds.
b. Tilt cover to 45-60° angle to allow any hot
condensate or product to roll off cover back
into kettle.
c. Remove cover, ensuring that remaining hot
condensate or product does not drip on
operator, floor or work surfaces.
d. Place cover on safe, flat, sanitary, out-of-the-
way surface, or return to kettle.
CAUTION
DO NOT TILT KETTLE WITH LIFT-OFF
COVER IN PLACE. COVER MAY SLIDE
OFF, CAUSING INJURY TO OPERATOR.
2. Basket Insert
An optional kettle basket insert set (Tri-BC) will
assist in cooking water-boiled products including
eggs, potatoes, vegetables, shell fish, pasta and
rice. The nylon mesh liner must be used for
products smaller than the basket mesh size,
(approx. ¼” (6 mm). This includes rice and small
pasta shapes.
10
OM-DHS
a. Allow for displacement of the three baskets
and product. This may mean only half filling
the kettle. Test baskets and product
displacement with the kettle OFF, and with
cold water in the kettle.
CAUTION
DO NOT OVERFILL THE KETTLE WHEN
COOKING, HOLDING OR CLEANING.
KEEP LIQUIDS AT LEAST 2-3” (5-8 cm)
BELOW THE KETTLE RIM TO ALLOW
CLEARANCE FOR STIRRING, BOILING
AND SAFE PRODUCT TRANSFER.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
FOOD OR WATER IN THE KETTLE. DIRECT
CONTACT COULD RESULT IN SEVERE
BURNS.
b. Load baskets on a level, stable work
surface.
c. Lift loaded baskets with both hands. Get
help from another person if the basket is too
heavy for safe handling.
d. Slowly lower product into kettle and securely
hook basket to the “Y” frame.
e. When removing baskets with cooked
product, lift straight up, ensuring basket
bottoms clear the kettle rim and pouring lip.
Wear protective oven mitts and protective
apron.
f. Allow hot water to fully drain from product,
before moving basket away from the kettle.
Do not rest baskets on kettle rim or pouring
lip. If baskets are too heavy for individual to
lift and safely move, get help. Remove
product immediately from basket into
another container, being sure to avoid
contact with hot product and hot basket or...
g. Place baskets with food on a stable, flat
surface, inside a solid steamer or bake pan,
to catch any remaining hot water draining
from product.
Sequence of Operation
The following “action-reaction” outline is provided to
help understand how the DHS kettle works.
1. When the power switch is turned on, it starts the
spark igniter and opens the automatic valve for
the pilot burner. The spark ignites a pilot flame,
which heats the sensor. The sensor then sends
a signal to turn off the spark. The flame
thereafter acts as a standing pilot until the power
is turned off.
2. If the pilot flame is not sensed within 90 seconds
after spark begins, a timer shuts down the entire
operation. To attempt a second trial for ignition,
turn off the power switch. Check the gas supply
valves and wait five minutes before trying again
by switching power on. If you cannot establish a
pilot flame in four tries, close all valves, turn off
the power, and contact an authorized Groen
Service Agency.
3. When the operator sets a temperature on the
thermostat, it causes the automatic valve to
admit gas to the main burner, where it is ignited
by the pilot flame. When the kettle reaches the
set temperature, the thermostat switch opens.
This stops the signal to the gas control valve and
shuts off gas to the main burner. The pilot flame
remains lit. When the kettle cools below the set
temperature, the thermostat switch closes and
starts another cycle. On and off cycling
continues and maintains the kettle at the desired
temperature. This action is indicated by the Heat
indicator light.
The kettle has the following safety features in
addition to the 90-second ignition timer:
1. Low water cutoff relay that will shut off gas
supplies to all burners until the jacket water level
is corrected.
2. High limit pressure switch, set to open at about
46 PSI and to shut down the burners until jacket
pressure is decreased.
3. Pressure relief valve, which will release steam if
jacket pressure exceeds 50 PSI.
4. Tilt switch, which shuts off all burners when the
kettle is tilted.
5. Gas pressure regulator built into the gas control
valve.
11
OM-DHS
OMS-DHS
Add grease through Zerk Fittings.
Maintenance
NOTICE: Contact Groen or an authorized Groen Service Agent when repairs are required.
1. Periodic Maintenance
A service Log is provided at the back of this
manual with the warranty information. Each time
maintenance is performed on your Groen kettle,
enter the date on which the work was done, what
was done, and who did it. Keep this manual on
file and available for operators to use.
Periodic inspection will minimize equipment
down time and increase the efficiency of
operation. The following points should be
checked:
a. Check the pressure/vacuum gauge every day.
The gauge should show a vacuum of 20 to 30
inches mercury (Hg), when the kettle is cold. If it
does not, see “Jacket Vacuum” on page 13.
b. Also check the jacket water level every day. It
should be in the middle of the sight glass. If the
level is low, see “Jacket Filling and Water
Treatment” on page 13.
c. Carefully test the pressure relief valve at least
twice each month. With the kettle operating at
five psi (105 kPa), pull the test lever and let it
snap back to its closed position. If there is little
discharge (mostly air), and the pressure gauge
drops back to zero PSI, allow the pressure to
build back to five PSI and repeat the procedure.
(Tip: Using a screwdriver or other implement to
pull the ring will help you avoid contact with the
steam.)
d. If the valve does not activate, or there is no
evidence of discharge, or the valve leaks, stop
using the kettle and contact a qualified Groen
service representative.
WARNING
WHEN TESTING, AVOID ANY EXPOSURE TO
THE STEAM BLOWING OUT OF THE SAFETY
VALVE. DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
e. Keep the primary burner gas jet air inlets
free of dust and lint.
f. The pilot flame should be blue. It should
envelop about ½ inch (12 mm) of the flame
sensor tip.
g. The gear housing has fittings for lubrication
of moving parts. The gears do not run in oil,
so periodic lubrication with grease is
necessary.
h. Frequency of lubrication depends on
operating conditions, but it should be done at
least once every six months.
i. Use a #2 grade LGI lithium grease to add
grease through Zerk fittings on gear housing
until it flows out of the bearings around the
trunnion shaft.
The pressure gauge should show a
vacuum of 20 to 30 inches when the
kettle is cold.
12
OM-DHS
Liberally grease the wheel where it contacts the
worm gear.
Pressure Gauge
Safety Valve
Pipe
Plug
Check
Valve
j. Place liberal amounts of grease on the gear
to cover the arc that is in contact with the
worm gear.
k. Keep electrical wiring and connections in
good condition.
l. Keep the inside of the control console clean
and dry.
m. Keep burner slots clean.
2. Jacket Vacuum/Removing Air from Jacket
When the kettle is cold, a positive pressure
reading on the pressure/vacuum gauge or a
reading near zero indicates that there is air in
the jacket. Air in the jacket acts as an insulator,
and slows kettle heating.
To remove air:
a. Start the unit. (Be sure there is water or
product in the kettle when heating).
b. When the pressure/vacuum gauge reaches
a positive pressure reading of five PSI,
release the trapped air and steam by pulling
up the safety valve ring for about five
seconds. Repeat this step three or four
times. Then let the pull ring snap back into
the closed position.
c. If there is little discharge (mostly air), and the
pressure gauge drops back to zero PSI,
allow the pressure to build back to five PSI
and repeat the procedure.
d. Once steam has been vented from the jacket
as described in b, above, remove the hot
water from the kettle and replace it with cold.
This will condense steam in the kettle jacket,
and the pressure gauge should show a
reading of 20 to 30 inches mercury (Hg)
below zero. If it does not, or if the vacuum is
leaking down, contact a Groen authorized
service agency to correct the problem.
3. Jacket Filling and Water Treatment
The jacket was charged at the factory with the
proper amount of treated water. You may need
to restore this water, either because it was lost
as venting steam or by draining. If you are
replacing water lost as steam, use distilled water.
If you are replacing treated water that ran out of
the jacket, prepare more treated water as
directed in “Water Treatment Procedure,” below.
Test the safety valve at least twice monthly.
a. Allow the kettle to cool completely. The
procedure will be easier with the kettle under
vacuum ( pressure gauge reading below
zero).
b. Remove the pipe plug from the jacket fill
assembly. Pour in the distilled or treated
water. Using a funnel will help you in this
process. Hold the pressure relief valve open
while you pour, to let air escape from the
jacket. Continue adding water until the
water level rises to the center of the round
sight glass.
13
OM-DHS
OMS-DHS
c. Position a funnel in the opening and fill it
with properly treated water.
d. Air that gets into the jacket during the filling
operation must be removed, because it will
make heating less efficient. Follow the
procedure in Jacket Vacuum/Removing Air
From Jacket above, to restore a negative
pressure reading.
4. Water Treatment Procedure
a. Obtain water treatment compound and a pH
test kit from your Groen Service Agent.
WARNING
TO AVOID INJURY, READ AND FOLLOW ALL
PRECAUTIONS ON THE LABEL OF THE
WATER TREATMENT COMPOUND.
b. Fill a mixing container with the measured
amount of water required. (See table).
Distilled water is recommended.
Kettle Model
Approximate Jacket
Capacity
DHS-40, DHS/T-40 4 Gallons
c. Hang a strip of pH test paper on the rim of
the container, with about 1 inch of the strip
below the surface of the water.
d. Measure the water treatment compound.
One way to do this is to add the compound
from a measuring cup.
e. Stir the water continuously, while you slowly
add treatment compound, until the water has
a pH between 10.5 and 11.5. Judge the pH
by frequently comparing the test strip color
with the color chart provided in the test kit.
Caution: Do not add excess amount of
treatment compound. Excess amount could
cause extensive corrosion.
f. As you add water to the jacket, check water
level to ensure that it is in the middle of the
sight glass
g. Record the exact amounts of water and
treatment compound needed. These
amounts may be used again, if the same
water sources and compound are used.
However, it is best to check the pH each
time treated water is prepared.
5. Component Replacement
WARNING
B E F O R E R E P L AC IN G A NY P A R T S ,
DISCONNECT THE UNIT FROM THE ELECTRIC
POWER SUPPLY AND CLOSE THE MAIN GAS
VALVE. ALLOW FIVE MINUTES FOR
UNBURNED GAS TO VENT.
When component replacement involves breaking a
gas pipe connection, check the new connection with
soap solution or an appropriate leak detector. DO
NOT USE A FLAME TO TEST FOR LEAKS.
Internal wiring is marked as shown on the circuit
schematic drawings (inside control housing and in
this manual). Be sure that new components are
wired in the same manner as old components. An
examination of the circuit schematic shows that the
safety components are wired in series. In most
cases, a faulty component may be isolated with a
jumper wire to verify that the component is faulty. If
this determination is made, contact a certified Groen
Service Agency for assistance.
14
CAUTION
NEVER LEAVE A SANITIZER IN CONTACT WITH
STAINLESS STEEL SURFACES LONGER THAN
30 MINUTES. LONGER CONTACT CAN CAUSE
CORROSION.
When attaching the draw-off valve, just handtighten the nut.
1. Suggested Cleaning Supplies:
a. Cleaner, such as Klenzade HC-10 orHC-32
from ECOLAB, Inc.
b. Kettle brushes in good condition
c. Sanitizer such as Klenzade XY-12.
d. Film remover such as Klenzade LC-30.
e. Groen Sray Degreaser (P/N 114801)
f. Groen Delimer/Descaler (P/N 114800)
2. Precautions
Before cleaning, shut off the kettle by turning the
thermostat dial to “OFF,” and shut off all electric
power to the unit at a remote switch, such as the
circuit breaker.
WARNING
KEEP WATER AND SOLUTIONS AWAY FROM
CONTROLS AND ELECTRICAL EQUIPMENT.
NEVER SPRAY THE SUPPORT HOUSING OR
ELECTRICAL CONNECTIONS
.
CAUTION
MOST CLEANERS ARE HARMFUL TO THE
SKIN, EYES, MUCOUS MEMBRANES, AND
CLOTHING. PRECAUTIONS SHOULD BE
TAKEN. WEAR RUBBER GLOVES, GOGGLES
OR FACE SHIELD, AND PROTECTIVE
CLOTHING. READ THE WARNINGS AND
FOLLOW THE DIRECTIONS ON THE LABEL
OF THE CLEANER CAREFULLY
3. Procedure
a. Clean food-contact surfaces as soon as
possible after use. If the unit is in continuous
use, thoroughly clean and sanitize the
interior and exterior at least once every 12
hours.
b. Scrape and flush out food residues. Be
careful not to scratch the kettle with metal
implements. (For DHS/T models only: After
flushing the kettle, close the draw-off valve.)
c. Prepare a hot solution of the detergent/
cleaning compound as instructed by the
supplier. Clean the unit thoroughly. A cloth
moistened with cleaning solution can be
used to clean controls, housings, and
electrical conduits.
d. Model DHT only: Disassemble the tangent
draw-off valve. Clean the draw-off port and
each valve part with a brush.
CAUTION
DO NOT MIX PARTS OF DIFFERENT DRAWOFF VALVE ASSEMBLIES. THE PARTS ARE
NOT INTERCHANGEABLE.
e. Rinse the kettle and draw-off valve parts
thoroughly with hot water, then drain
completely.
f. When you reassemble the draw-off valve,
hand-tighten the nut which holds it in place.
g. As part of the daily cleaning program, clean
soiled external and internal surfaces.
Remember to check the sides of the unit and
control housing, underside of cover, etc.
h. To remove burnt on foods, use a brush,
sponge, cloth, plastic or rubber scraper, or
plastic wool with the cleaning solution. To
reduce effort required in washing, let the
detergent solution sit in the kettle and soak
into the residue. Do NOT use abrasive
materials or metal tools that might scratch
the surface. Scratches make the surface
harder to clean and provide places for
bacteria to grow.
Do NOT use steel wool, which may leave
particles in the surface and cause eventual
corrosion and pitting.
Cleaning
OM-DHS
15
OM-DHS
OMS-DHS
i. The outside of the unit may be polished with
a stainless steel cleaner such as “Zepper”
from Zep Manufacturing Co.
j. When equipment needs to be sanitized, use
a solution equivalent to one that supplies
200 parts per million available chlorine.
Obtain advice on sanitizing agents from your
supplier of sanitizing products.
k. Following the supplier’s instructions, apply
the agent after the unit has been cleaned
and drained. Rinse off the sanitizer
thoroughly.
NOTICE
NEVER LEAVE A CHLORINE SANITIZER IN
CONTACT WITH STAINLESS STEEL
SURFACES LONGER THAN 30 MINUTES.
LO NG ER C ON TAC T CAN C A USE
STAINING AND CORROSION.
k. It is recommended that each piece of
equipment be sanitized just before use.
l. If there is difficulty removing mineral
deposits or a film left by hard water or food
residues, clean the kettle thoroughly and
then use a deliming agent, like Groen
Delimer/Descaler (Part Number 114800) or
Lime-Away from Ecolab, in accordance with
the manufacturer’s directions. Rinse and
drain the unit before further use.
m. If cleaning problems persist, contact your
cleaning product representative for
assistance. The supplier has a trained
technical staff with laboratory facilities to
serve you.
16
OM-DHS
Troubleshooting
Your Groen kettle 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 and in
this manual. If an item on the list is followed by �
��
�, the work should be done by a qualified service
representative.
WARNING
BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER SUPPLY
AND CLOSE THE MAIN GAS VALVE. ALLOW FIVE MINUTES FOR UNBURNED GAS TO VENT.
CAUTION
USEING REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN OR THEIR AUTHORIZED
DISTRIBUTOR CAN CAUSE OPERATOR INJURY AND EQUIPMENT DAMAGE AND WILL VOID ALL
WARRANTIES.
SYMPTOM WHO WHAT TO CHECK
���� indicates items which must be performed by an authorized technician.
Kettle is hard to tilt. User a. Gears for foreign materials, and lubrication.
Auth
Service
Rep Only
b. Gears for alignment. �
c. Worm gears or broken gears. �
Kettle continues heating after it
reaches desired temperature.
User a. Thermostat dial setting.
Auth
Service
Rep Only
b. Thermostat calibration.�
c. Thermostat operation. The thermostat should click when the dial is
rotated to settings above and below the temperature of the kettle.�
Kettle stops heating before it
reaches the desired temperature.
User a. Thermostat dial setting.
Auth
Service
Rep Only
b. Thermostat calibration.�
c. Thermostat operation. The thermostat should click when the dial is
rotated to settings above and below the temperature of the kettle.�
Pressure relief valve pops open User a. For air in the jacket. See “Jacket Vacuum” in the Maintenance section.
b. Thermostat dial setting.
Auth
Service
Rep Only
c. For defective thermostat. The thermostat should click when the dial is
rotated to settings above and below the temperature of the kettle. If
defective, replace.
�
d. For defective pressure relief valve. If the valve pops at pressures below
49 PSI, replace.�
Burners will not light. User a. That the main gas supply valve is open. (handle is in line with gas pipe).
b. Gas supply to the building.
c. That the kettle body is not tilted.
Auth
Service
Rep Only
d. Thermostat operation. The thermostat should click when the dial is
rotated to settings above and below the temperature of the kettle.�
f. That tilt limit switch is closed when body is not tilted.�
System does not produce a spark Auth
Service
Rep Only
a. Thermostat, and close the contacts if they are open �
b. AC voltage between terminals on secondary side of transformer. If it is
not 24 Volt, replace the transformer �
c. That the high tension cable is firmly attached and in good condition. If
cracked or brittle, replace.�
d. Pilot electric ceramic for crack or break.�
e. Pilot spark gap. Regap.�
Pressure relief valve leaks a
small amount of steam when the
kettle is operating.
User a. For contamination that prevents seating of valve. With full pressure in
the jacket, pull the lever all the way briefly to blow the valve clean, then
let the leaver snap back to seat the valve.
Auth
Service
Rep Only
b. Pressure relief valve for defects. Replace any defective valve with an
identical valve.
�
Kettle is hard to tilt. Auth
Service
Rep Only
a. Tilting gear and worm for contamination and for proper alignment and
lubrication.�
17
OM-DHS
OM-DHS
SYMPTOM WHO WHAT TO CHECK
���� indicates items which must be performed by an authorized technician.
Spark is present but the pilot will
not light.
Auth
Service
Rep Only
a. That the pilot valve is securely connected to terminals.�
b. For 24 VAC at terminals PV and PV/MV. If 24V is not present, replace
the ignition control module.�
b. That gas pressure is at least 3.5" W.C.(8.7818 �b).�
c. For gas at the pilot. If it is not flowing:
(1) Check the pilot gas line for kinks and obstructions.�
(2) Clean orifice, if necessary.�
(3) Check magnetic operator for pilot valve on gas valve. Repair or
replace as necessary.�
d. That the pilot spark gap is located in the pilot gas stream. If not, adjust
or replace the pilot burner.�
e. For drafts. Shield the pilot burner, if necessary.�
Pilot lights, but main burner will
not come on and spark does not
stay on.
Auth
Service
Rep Only
a. For 24 V between terminals PV and PV/MV. If 24V is not present,
replace the ignition control module.�
b. That gas pressure is at least 3.5" W.C.(8.7818 �b).�
c. Electrical connections of the main valve to terminals, to assure that they
are securely attached. Check magnetic operator for pilot valve on gas
valve. Repair or replace as necessary.�
Pilot lights, but main burner will
not come on, the spark stays on.
Auth
Service
Rep Only
a. Check for bad burner ground. If necessary, repair with high temperature
wire.�
b. Pilot burner ceramic insulator for cracks.�
c. That cable is not grounded out. If it is, correct the ground-out condition
or replace cable.�
d. For proper gas pressure.�
e. Clean pilot assembly, or replace if necessary.�
f. Tighten all mechanical and electrical connections.�
g. If the pilot flame is weak, increase pilot orifice size.�
h. Replace ignition control module.�
Main burner comes on but will not
stay on.
Auth
Service
Rep Only
a. Check burner ground for bad wire or connection. Replace if necessary
with high temperature wire.�
b. Check for low gas supply pressure. If necessary, replace ignition control
module.�
18
OM-DHS
19
Parts List
To order parts, contact your Groen Certified Service Agency. Supply the model designation, part description, part number, quantity, and, where applicable,
voltage and phase.
19
OM-DHS
OM-DHS
Parts List
To order parts, contact your Groen Certified Service Agency. Supply the model designation, part description, part number, quantity, and, where applicable, voltage
and phase.
Key Description Part No. Key Description Part No. Key Description Part No.
Hardware, Final Assembly 139068 Nut Hexagon 1/2"-13 5705 Module Box Asm., Electronic Ignition 123734
Glass Site Round 1-1/4 108554 Washer Lock 1/2" 5735 Enclosure, Spark Ignition 123775
Bracket Faucet 9054 Nut Hexagon 3/8"-16 8214 Cover-Enclosure 104948
Strap Cable Ty-Rap 11093 Screw Hexagon Head Cap 8679 Gasket - Spark Ignition Box 104941
Nut Hexagon Keps 1/4"-20 12940 Housing Bearing Assy 9762 Honeywell Ignition 85153
Foot Adjustable Bullet 13275 Bearing Ball DEE/4-40 9765 Conduit, Plastic Male Adapter 123733
Swivel Joint 1/2" NPT 76680 Gear Worm 3/4" Bore 12026 Nut Lock 1/2" NPT 5487
Valve Gas Manual Shutoff 1/2" 98458 Washer Shim 1-3/8" ID 12039 Screw Truss Head #8-32 x3/8" 5764
Manual , Operation DH w/std electric 137920 Screw Set Socket 12060 Nut Hexagon Keps 6-32 71289
Knob Thermostat Dial 12314 Pin Roll 1/4" Dia x 1-1/4" Lg 12614 Screw #10-32 x 3/8" Hex MS 69773
Ring Basic Internal Retaining 13483 Cable Tie 5.6 Lg 86426
Piping Water Fill Assembly 139396 Gear 3" Bore (92) Teeth DEE/4 13609 Tie Anchor - Screw Mounted 102231
Plug Pipe 1/2 NPT 011146 13617 Handle Crank 3/4" Bore 13617 Nut Hexagon Keps 8-32 69784
Elbow 90 Deg Street ½ NPT 4185 Shaft Handwheel 3/4 13624 Cable High Volt 69728
Valve Swing Check 1/2" NPT 4187 Spacer 3" Sch 40 x 3/4 13625
Nipple 1/2" NPT x Close 8877 Shim Trunnion For DH 88248 Assembly, Front Panel 139069
Screw Hex Hd Cap 1/2"-13 x 3-1/2" 3285 Gasket Switch 137435
Relief Valve Wire Gauge Assembly 139395 Light, Indicator, Amber, 24 VAC 116384
Valve Safety 50 PSI 97005 Bracket , Support Assy Gas Line 139870 Light, Indicator, Red, 24 VAC 116383
Plate/Chain Assy Caution 8332 Nut, Hex Heps, 1/4-20 W/Shakeproof
Washer
12940 Switch, SPST On/Off 006904
Gauge Compound Pressure W/Dual 84208 Screw, Hex Hd Cap, 1/4-20 x 3/4" 5609 Overlay, Front Panel 123802
Tee 1/2" NPT 8772 Pipe Strap, 3/4" EMT Conduit 135252 Gasket Lamp 137434
Nipple ½ NPT x Close 8877 Support Bracket Weldment, Gas Line 68133
Elbow 90 Deg Street 1/2" NPT 4185 A Stand and Housing Assembly 139053
Bushing Reducing 1/2" 8739 Tilt Switch & Bracket Assy 135331
Elbow 90 Degree Street ½ NPT 96905 Bracket Mounting 14129 B Gas Valve Piping & Bottom Comps. 139863
Micro Switch 2982
Tilt Mechanism Assembly 045752 Barrier Insulation 3490 C Burner and Flame Sensor Assembly 123814
Bushing, Snap 3/4" x 1" Nylon 000453 Screw Round Head 3122
Key 3/8" Square X 1474 Washer #6 Internal Tooth 13418 D Combustion Chamber Assembly 122093
Screw Socket Head Cap 5097 Nut Hexagon #4-40 3121
Washer Lock 3/8 “ 5702 E Flue Stack Assembly 137871
See Following Pages for Assembly Parts
20
OM-DHS
21
Stand and Housing Assembly
Parts List
Key Description Part No. Key Description Part No. Key Description Part No.
A Stand and Housing Assembly 139053 5 Housing Cladding, DHS -40 139179 10 Screw Truss #8-32 x 3/8 005764
1 Cabinet Side Panel 047882 6 Tray Liner 001475 11 Screw Truss #8-32 x 1-3/8 Lg. 081698
2 Stand Cladding 139056 7 Nut Hexagon 1/2-13 Heavy Duty 005603 12 Top Cover 138114
3 Base Assembly 137950 8 Screw Hex Head Cap 1/2-13 x1-1/2 008679 13 1/2" Plain Washer 005049
4 Pedestal Weldment Assembly 138101 9 1/2" Lock Washer 005657
21
OM-DHS
OM-DHS
Parts List
To order parts, contact your Groen Certified Service Agency. Supply the model designation, part description, part number, quantity, and, where applicable, voltage
and phase.
Gas Valve Piping and Bottom Components Assembly
Key Description Part No. Key Description Part No. Key Description Part No.
B Gas Valve Piping&Bottom Comps. 139863 9 Pressure Switch 1/4" 096963 18 Tube, Aluminum 5/8" OD 063015
1 Tube, Copper, 1/2" 007334 10 Connector 1/2 NPT Male 049093 19 Boot Probe 101143
3 Thermostat, electric 009730 11 Gas Valve 123815 20 Cover, Bottom 090630
4 Elbow, 90 Deg 1/2 NPT 008747 12 Bracket Support 065382 21 Cap Bottom Cover Plate 049803
5 Nipple, 1/2 NPT x 2-1/2" Long 005552 13 Screw, Pan Head #8-32 x 3/8" 005764 22 Gasket, Bottom Plate 007937
6 Electrode, Water Level 002170 14 Nut, Hexagon Kep 1/4 012940 23 Screw, 10-32x3/8, Hex 069773
7 Elbow, 1/2" Tube x 3/8 “ NPT 90737 15 Weld Stud 011028 24 Elbow, 1/8" NPT Male x 1/4" Tube 004584
8 Connector 1/4" NPT Female 097074 16 Bar, DHS-40 & 60 005440 25 Tube, Aluminum 1/4" OD x 32" 006796
17 Clamp, Rigid Conduit, 1/2: NFPC 068687 26 Burner and Flame Sensor Assy. 123737
22
OM-DHS
Electrical Schematic
Burner and Flame Sensor Assembly
Flue Stack Assembly
Parts List
OM-DHS
23
OM-DHS
OM-DHS
Parts List
To order parts, contact your Groen Certified Service Agency. Supply the model designation, part description, part
number, quantity, and, where applicable, voltage and phase.
Key Description Part No. Key Description Part No.
C Burner and Flame Sensor Assy E Flue Stack Assembly 137871
(Natural Gas) 123814 1 Flue, Top Section of Top Plate
(Propane) 139871 2 Flue, Bottom Section of Top Plate
1 Baffle Plate 123498 3 Flue, Front Section
2 Washer Lock 005655 4 Flue, Main Body
3 Nut Hex 005601 5 Screw, Truss Head
4 Burner Bracket Support 1017010
5 Burner Bracket 117013
6 Burner Assembly (Natural Gas) 090644
Burner Assembly (Propane) 139866
7 Pilot Burner Assembly (Natural Gas) 123580
Pilot Burner Assembly (Propane) 128351
24
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Electrical Schematic
Electrical Panel
Parts List
Arm and Module Box Assembly
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Parts List
To order parts, contact your Groen Certified Service Agency. Supply the model designation, part description, part
number, quantity, and, where applicable, voltage and phase.
Key Description Part No. Key Description Part No.
Electrical Mounting Assembly 139175 Arm and Module Box Assembly 123734
1 Water Level Control Board 122192 1 Conduit Nut, 1/2" 005487
2 PC Board Mounting Post 099901 2 Screw #8-32 x 3/8" 005764
3 Lug Ground #14 -#6 AWG 129714 3 Box, Spark Ignition Module 123775
4 Screw #8-32 x 3/8" Hex Hd Cap 069789 4 Gasket, Ignition Module Box 104941
5 Electrical Panel Weldment 138123 5 Spark Ignition Module 085153
6 Nut #10-32 Hex Head w/shakeproof
washer
071256 6 Hex Nut w/shakeproof washer 071289
7 Terminal Block 003887 7 Conduit, Plastic, male adapter 1/2" 123733
8 Fuse Holder Type 3AG 077854 8 Cover, Ignition Module Box 104948
9 Fuse 3.0 Amp Type 3Ag 077853 9 Hex Nut w/shakeproof washer 069784
10 Screw #6-32 x 3/8" Rd Hd Machine 009697 10 Tie Anchor - Screw Mounted 102231
11 Screw #8-32 x 11/4" Rd Hd Machine 005056 11 Cable Tie, 0.140 Wide Locking 086426
12 Transformer, 20 VA, 120V PRI, 24V
Sec
137487 12 Screw #10=32 x 0.375 long 069773
Transformer 208/240 PRI, 24V sec 137441
13 Wiring Harness ASM., 123582
14 Wiring Harness ASM., 123779
15 Strap Cable Ty-Rap 011093
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Electrical Schematic
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27
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Service Log
Model No. _______________________________ Purchased From _________________________
Serial No. _______________________________ Location ________________________________
Date Purchased __________________________ Date Installed ___________________________
Purchase Order No. _______________________ For Service Call __________________________
Date Service Performed Performed By
28
Limited Warranty
To Commercial Purchasers *
(Domestic U.S., Hawaii &
Canadian Sales Only)
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 (12) twelve months with the following conditions and subject to the following limitations.
I. This parts and labor 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 the
continental United States, Hawaii 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 purchaser/user.
III. Groen, or an authorized service representative, will repair or replace, at Groen's sole election, any Groen
Equipment, including but not limited to, drawoff valves, safety valves, gas and electric components,
found to be defective during the warranty period. As to warranty service in the territory described above,
Groen will absorb labor and portal to portal transportation costs (time & mileage) for the first twelve (12)
months from date of installation or fifteen (15) months from date of shipment from Groen.
IV. This warranty does not cover boiler maintenance, calibration, 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 Foodservice Equipment Ordered After October 1, 1995)
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NOTES
30
1055 Mendell Davis Drive
Jackson, MS 39272
Telephone 601 372-3903
Fax 601 373-9587
www.groen.com
OM-DHS
Part Number 137920 Rev. B
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