Groen DH-1-40 Service Manual
IMPORTANT INFORMATION• KEEP FOR OPERATOR• IMPORTANT INFORMATION
OPERATOR MANUAL OM-DH
Part Number 121050-Rev A. DOMESTIC
MODEL: DH
Steam Jacketed Kettle
[with Standard Electronic Ignition]
Self-Contained
Gas heated
Floor mounted
Tilting
Model DH-40
With Optional Counter-balanced Cover
T H I S
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.
Information contained in this document is
known to be current and accurate at the time
of printing/creation. Unified Brands recommends referencing our product line websites,
unifiedbrands.net, for the most updated
product information and specifications.
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IMPORTANT — READ FIRST — IMPORTANT
CAUTION: BE SURE ALL OPERATORS READ, UNDERSTAND AND FOLLOW THE OPERATING
INSTRUCTIONS, CAUTIONS, AND SAFETY INSTRUCTIONS CONTAINED IN THIS
MANUAL.
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: KETTLE MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH
ELECTRICITY AND PLUMBING. IMPROPER INSTALLATION CAN RESULT IN INJURY
TO PERSONNEL AND/OR DAMAGE TO EQUIPMENT.
DANGER: ELECTRICALLY GROUND THE UNIT AT THE TERMINAL PROVIDED. FAILURE TO
GROUND UNIT COULD RESULT IN ELECTROCUTION AND DEATH.
WARNING: DO NOT CONNECT ANY PIPING TO THE POP SAFETY VALVE. THE VALVE MUST
BE FREE TO VENT STEAM AS NEEDED. THE ELBOW ATTACHED TO THE SAFETY
VALVE SHOULD POINT TO THE FLOOR. IMPROPER INSTALLATION 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.
CAUTION: DO NOT OVER FILL 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 PRODUCT TRANSFER.
WARNING: TAKE SPECIAL CARE TO AVOID CONTACT WITH HOT KETTLE BODY OR HOT
PRODUCT WHEN ADDING INGREDIENTS, STIRRING OR TRANSFERRING PRODUCT
TO ANOTHER CONTAINER.
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.
CAUTION: KEEP FLOORS IN FRONT OF KETTLE WORK AREA CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN IMMEDIATELY, TO AVOID SLIPS OR FALLS.
WARNING: FAILURE TO CHECK SAFETY VALVE OPERATION PERIODICALLY COULD RESULT
IN PERSONAL INJURY AND/OR DAMAGE TO EQUIPMENT.
WARNING: WHEN TESTING SAFETY VALVE, AVOID ANY EXPOSURE TO THE STEAM
BLOWING OUT OF THE SAFETY VALVE. DIRECT CONTACT WITH STEAM COULD
RESULT IN SEVERE BURNS.
WARNING: TO AVOID INJURY, READ AND FOLLOW ALL PRECAUTIONS STATED ON THE
LABEL OF THE WATER TREATMENT COMPOUND.
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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.
WARNING: KEEP WATER AND SOLUTIONS OUT OF CONTROLS AND ELECTRICAL
EQUIPMENT. NEVER SPRAY OR HOSE 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. CAREFULLY READ
THE WARNINGS AND FOLLOW THE DIRECTIONS ON THE LABEL OF THE
CLEANER TO BE USED.
CAUTION: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN
OR THEIR AUTHORIZED SERVICE AGENTS CAN CAUSE OPERATOR INJURY AND
DAMAGE TO THE EQUIPMENT, AND WILL VOID ALL WARRANTIES.
IMPORTANT: SERVICE PERFORMED BY OTHER THAN FACTORY AUTHORIZED PERSONNEL
WILL VOID WARRANTIES.
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Table of Contents
IMPORTANT OPERATOR WARNINGS ................................... 2
EQUIPMENT DESCRIPTION ............................................ 5
INSPECTION & UNPACKING ........................................... 6
INSTALLATION ...................................................... 7
OPERATION ........................................................ 9
SEQUENCE OF OPERATION .......................................... 11
MAINTENANCE .................................................... 12
CLEANING ......................................................... 15
TROUBLESHOOTING ................................................ 17
PARTS LISTS ....................................................... 19
DIAGRAMS & SCHEMATICS ........................................... 21
MAINTENANCE LOG ................................................. 22
REFERENCES ...................................................... 23
WARRANTY ........................................................ 24
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Equipment Description
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The Groen DH 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 DH is available in 20, 40 or 60 gallon
capacities.
The body of the DH 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. Ignition is electronic.
The kettle is charged at the factory with
chemically pure 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. Alternate voltages (208V or 240V) are
available.
KETTLE CHARACTERISTICS
DH-20 DHT-20 DH/1-40 DHT/1-40 DH-60 DHT-60
Kettle Capacity
Tangent drawoff No Yes No Yes No Yes
Jacket Capacity
Kettle Body
Diameter
Base Width
Base Front to
Back
Firing Rate - per
hour
Energy into
Product per hr.
20 gal
(75 ltr)
5 gal.
(19 ltr)
20 in.
(508 mm)
35 in.
(889 mm)
29
(736 mm)
72,000 BTU 72,000 BTU 100,000 BTU 100,000 BTU 150,000 BTU 150,000 BTU
44,140 BTU 44,140 BTU 65,000 BTU 65,000 BTU 93,000 BTU 93,000 BTU
20 gal.
(75 ltr)
5 gal.
(19 ltr)
20 in.
(508 mm)
35 in.
(889 mm)
29
(736 mm)
40 gal.
(150 ltr)
6 gal.
(22¾ ltr)
26 in.
(660 mcm)
47 in.
(1194 mm)
29
(736 mm)
40 gal.
(150 ltr)
6 gal.
(22¾ ltr)
26 in.
(660 mm)
47 in.
(1194 mm)
29
(736 mm)
60 gal.
(225 ltr)
14 gal.
(53 ltr)
30 in.
(762 mm)
47 in.
(1194 mm)
29
(736 mm)
60 gal.
(225 ltr)
14 gal.
(53 ltr)
30 in.
(762 mm)
47 in.
(1194 mm)
29
(736 mm)
Options available with listed models are:
1. Two inch tangent drawoff*
2. Strainers, solid disk, ¼ or c inch holes
3. No. 31 lift-off cover
4. No. 51 counterbalanced cover w/actuator*
* Factory-installed options
5. Basket Inserts (Tri-BC)
6. Water fill faucets with swing spout
7. Kettle Brush Kit
8. Stainless steel liner*
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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.
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Installation
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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
PERSONNEL AND/OR DAMAGE TO
EQUIPMENT.
1. Installation on combustible floors is allowed.
Rear clearance of 10 inches and six inches at
both sides is required for both combustible and
non-combustible construction.
2. Installation under a vent hood is recommended.
Consult local codes.
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.
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. The unit
may also be ordered for alternate electric service
of 208 VAC or 240 VAC. Observe local codes
and/or The National Electrical Code in
accordance with ANSI/NFPA 70 - (current
edition). Use the wiring diagram inside the
service panel and at the rear of this manual.
soap solution or other suitable leak detector
should be employed.
9. Confirm that the jacket water level is between
the gauge glass markers. If the level is low,
follow instructions under “Jacket Filling and
Water Treatment,” Page 13.
10. The open end of the elbow on the outlet of the
safety valve must face downward. If it does not,
turn it to the correct position.
The open end of the pop safety valve elbow
must face downward.
WARNING
DO NOT CONNECT ANY PIPING TO THE POP
SAFETY 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.
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.
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
11. The appliance and its individual shut-off valve
must be disconnected from the gas supply
piping system during any testing at pressures in
excess of ½ PSI (3.45 kPa). The appliance must
be isolated from the gas supply piping system
by closing its individual manual shut-off valve
during any pressure testing at or less than ½ PSI
(3.45 kPa).
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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.
(For units with optional tangent draw-off). 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.
When attaching the draw-off valve handtighten the nut.
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.
Each day confirm the jacket water
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level by checking the water gauge.
Operation
A. Controls
Operator controls for the DH 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:
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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 Procedure
1. To Start Kettle:
a. EVERY DAY make sure that the jacket
water level is between the markers on the
gauge glass. If the level is too low, see
“Jacket Filling and Water Treatment” on
page 13.
b. Check the pressure 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.
to maintain the set temperature. The
heat indicator light will come on.
3) If the unit does not light, turn it off and
wait five minutes. Then follow the
instructions again.
2 To Empty Kettle:
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 Shut Down Kettle:
a. Turn thermostat dial to OFF.
b. Turn toggle switch to OFF.
4. For a prolonged shut-down:
c. Do not attempt to light any burner with a
flame.Turn the manual gas valve ON (align
handle with gas line).
1) 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.
2) Turn thermostat to desired setting. The
main gas burner will ignite, and will cycle
a. Follow the procedure above.
b. Turn the manual gas valve off (handle at
right angles to gas line).
c. Disconnect electric power from the unit.
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