Groen OM-TDB/7 User manual

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OPERATOR MANUAL OM-TDB/7
Part Number 121002 DOMESTIC
MODEL: TDB/7
Steam Jacketed Kettle
Self-Contained
Electrically heated
Table top 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.

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IMPORTANT — READ FIRST — IMPORTANT
CAUTION: BE SURE ALL OPERATORS READ, UNDERSTAND AND FOLLOWTHEOPERATING
INSTRUCTIONS, CAUTIONS, AND SAFETY INSTRUCTIONS CONTAINED IN THISMANUAL.
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.
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: AVOID ALL DIRECT CONTACT WITH HOT EQUIPMENT SURFACES. DIRECT SKIN
CONTACT COULD RESULT INSEVERE BURNS.
WARNING: AVOID ALL DIRECT CONTACT WITH HOT FOOD OR WATER IN THE KETTLE. DIRECT
CONTACT COULD RESULT INSEVERE 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 ORHOT PRODUCT
WHEN ADDING INGREDIENTS, STIRRING OR TRANSFERRING PRODUCT TO ANOTHER
CONTAINER.
WARNING: WHEN TILTING KETTLE FOR PRODUCT TRANSFER:
1) WEAR PROTECTIVE OVEN MITT AND PROTECTIVE APRON.
2) USE CONTAINER DEEP ENOUGH TO CONTAIN AND MINIMIZE PRODUCT SPLASHING.
3) PLACE CONTAINER ON STABLE, FLAT SURFACE, AS CLOSE TO KETTLE AS
POSSIBLE.
4) STAND TO LEFT OR RIGHT SIDE OF KETTLE (DEPENDING ON TILTING HANDLE
PLACEMENT) WHILE POURING . DO NOT STAND DIRECTLY IN POUR PATH OF HOT
CONTENTS.
5) POUR SLOWLY, MAINTAIN CONTROL OF KETTLE BODY HANDLE AT ALL TIMES, AND
RETURN KETTLE BODY TO UPRIGHT POSITION AFTER CONTAINER IS FILLED OR
TRANSFER IS COMPLETE.
6) DO NOT OVER FILL CONTAINER. AVOID DIRECT SKIN CONTACT WITH HOT
CONTAINER AND ITS CONTENTS.
CAUTION: KEEP FLOORS INFRONT OF KETTLEWORK AREA CLEANAND DRY.IF SPILLS OCCUR,
CLEANIMMEDIATELY,TOAVOID SLIPS ORFALLS.
WARNING: FAILURE TO CHECK SAFETY VALVE OPERATION PERIODICALLY COULD RESULT IN
PERSONAL INJURY AND/OR DAMAGE TO EQUIPMENT.
WARNING: WHEN TESTING, AVOID ANY EXPOSURE TO THE STEAM BLOWING OUT OF THE SAFETY
VALVE. DIRECT CONTACT COULD RESULT INSEVERE BURNS.
WARNING: TO AVOID INJURY, READ AND FOLLOW ALL PRECAUTIONS STATED ON THE LABEL OF
THE WATERTREATMENT COMPOUND.
WARNING: BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER
SUPPLY.

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IMPORTANT — READ FIRST — IMPORTANT
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 OTHERTHAN THOSESUPPLIED BY GROENORTHEIR
AUTHORIZED DISTRIBUTORS CANCAUSE OPERATOR INJURY AND DAMAGE TO THE
EQUIPMENT, AND WILL VOID ALL WARRANTIES.
IMPORTANT: SERVICE PERFORMED BY OTHER THAN FACTORY AUTHORIZED PERSONNEL WILL VOID
WARRANTIES.

OM-TDB/7
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Table of Contents
IMPORTANTOPERATORWARNINGS ................................................................ 2
EQUIPMENTDESCRIPTION......................................................................... 5
INSPECTION & UNPACKING ......................................................................... 7
INSTALLATION .................................................................................... 8
INITIALSTART-UP ................................................................................. 9
OPERATION...................................................................................... 10
SEQUENCEOFOPERATION ....................................................................... 12
MAINTENANCE ................................................................................... 13
CLEANING ....................................................................................... 17
TROUBLESHOOTING.............................................................................. 19
PARTS LISTS
Units Manufactured Before Sept. 1, 1988 ........................................................... 20
Units Manufactured Between Sept. 1, 1988 and July 1, 1992 ........................................... 22
Units Manufactured Between July 1, 1992 and Feb. 6, 1995 ............................................ 24
Units Manufactured After Feb. 6, 1995 ............................................................. 26
DIAGRAMS & SCHEMATICS
Units Manufactured Before Sept. 1, 1988 ........................................................... 30
Units Manufactured After Sept. 1, 1988 and
Before June 1, 1990 ........................................................................ 33
Units Manufactured After June 1, 1990 and
Before July 1, 1992 ......................................................................... 36
Units Manufactured After June 1, 1990 and
Before Feb. 6, 1995 ......................................................................... 37
Units Manufactured After July 1, 1992 and
Before Feb. 6, 1995 ......................................................................... 38
Units Manufactured After Feb. 6, 1995 ............................................................. 39
SERVICELOG.................................................................................... 42
REFERENCES .................................................................................... 42
WARRANTY ...................................................................................... 43

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Equipment Description
The Groen TDB/7 is atable top,tilting, steam
jacketed kettle withathermostaticallycontrolled,
self-contained, electrically-heated steam supply and
appropriate controls, mounted on a sturdy base. The
Model TDB/7 is available in20 or 40 -quart capacity.
The body of the TDB/7 Kettle is constructed of
stainless steel, welded into one solid piece.The
kettle is furnished with areinforced rim and a
butterfly shaped pouring lip. It has a steam jacket
rated forworking pressures up to 50 PSI. Kettle
finishis 180 emerygriton the inside and bright semi-
deluxe on the outside. A tilt handle allows the
operator to manually tilt the kettle body in a
controlled manner. Pouring height accepts pans up to
4 inches highon atable top.
A built-insteam generator, sized for the kettle
capacity and heated by electricity, delivers steam
into the jacket. “Airless” operationof the steam
jacket permits uniform, efficient heating at
temperatures as lowas 150°F and as highas 295°F.
In additionto the adjustable thermostat for operating
control, the unit has a tilt cut-off switch, low water
cut-off, safety valve, and high-limit pressure switch
as safety features. A heating indicator light,
pressure gauge, and sight glass are provided for
monitoring kettle operation.
A single electrical connection is required for
installation. The unit maybe ordered for use with
208/240 or 480 volt power.All kettles are wired for
three-phase operation. Forsingle-phase conversion,
see the wiring diagrams in this manual.
KETTLE CHARACTERISTICS
TDB/7-20+ TDB/7-40
Kettle Capacity 20 qts. 18.8 liters 40 qts. 37.6 liters
Jacket Capacity 4 qts. 3.7 liters 5 qts. 4.7 liters
Diameter 14” 36 cm 16-1/2” 42 cm
Depth 11” 28 cm 14-1/4” 36 cm
K.W. at 208 V 6.3 10.8
K.W. at 240 V 8.4 14.4
K.W. at 480 V 6.3 12.0
Base Width 24” 60 cm 24” 60 cm
Base Depth 16” 41 cm 16” 41 cm

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New/Current Models
Pre- Feb. 1995 Models
Optional equipment available with any model:
1. Stand that supports the unit and holds a paninpositionfor filling
2. Lift-off cover
3. Basket insert
4. Fill faucet
5. Manual stirrers
6. Motor driven agitator

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The TDB/7 is shipped from the factory strapped on a
pallet. The tilt handle is inside the kettle.
Inspection & Unpacking
The unit will arrive in a heavy shipping carton and will
be attached to askid. 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.
Carefullycut the polyesterstraps around the carton
and detach the sides of the box from the skid.Pull
the carton up off the unit.
Thoroughlyinspect the unit for concealed damage.
Report anyshipping damage or incorrect shipments
to the deliveryagent.
Write downthe 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 140 TO 163 LB. (64 TO
74 KG). INSTALLER SHOULD OBTAIN
HELP AS NEEDED TO LIFT THIS WEIGHT
SAFELY.
When installation is to begin, carefully cut the 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.
Attach the tilt handle (normally shipped inside the
kettle) by carefully threading it into the socket on the
trunnion support.Be careful to avoid cross-threading
fine socket threads.

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Installation
The GroenKettle is provided with
complete internal wiring. It is ready for
immediate connection. A wiring diagram
is provided in this manual and on the
inside of the control housing service
panel. Any mechanical or electrical changes must be
approved in by Groen’s Food Service Engineering
Department.
WARNING
INSTALLATION OF THE KETTLE MUST BE
DONE BY PERSONNEL QUALIFIED TO
WORK WITH ELECTRICITY. IMPROPER
INSTALLATION CAN RESULT IN INJURY
TO PERSONNEL AND/OR DAMAGE TO
EQUIPMENT.
The completed unithas been operated at the factory
to test all controls and heater elements.
1. Set the kettle inplace and level it. The base
should be securely fastened to atable orwork
surface. Four 3/8”-16 N.C. threaded couplings
are provided inthe base of unit. Installation
under a ventilation hood is recommended.
2. Provide electrical power as specified onthe
electrical informationplate attached to the
equipment. Observe local codes and/orThe
National Electrical Code inaccordance with
ANSI/NFPA 70 - (current edition).
3. The equipment is shipped ready for three phase
operation. Refer to the wiring diagram for single
phase operation.
4. Bringing the electrical service throughthe
entrance at the rear of the support housing,
making a watertight connection with the
incoming lines. (A BX connection is not
recommended.)
DANGER
ELECTRICALLY GROUND THE UNIT AT
THE TERMINAL PROVIDED. FAILURE TO
GROUND UNIT COULD RESULT IN
ELECTROCUTION AND DEATH.
5. Confirm that the jacket water level is above
mid point of sight glass (new models) or
between the marks onthe gauge glass (old
models). If the level is low, followthe
instructions under “Jacket Filling and Water
Treatment” in the “Maintenance” section of
the manual.
6. The open end of the elbowon the outletof
the safety valve must be directed downward
on old models. If it is not, turn the elbowto
the correct position. On new models the
safetyvalve points down.
7. Any mechanical or electrical change must be
approved by the GroenFood Service
Engineering Department.
TDB/7 ELECTRICAL SPECIFICATIONS
20 QUARTS 40 QUARTS
VOLTAGE PHASE KW AMPS KW AMPS
208 1 6.3 31 10.8 52
208 3 6.3 18 10.8 30
240 1 8.4 35 14.4 60
240 3 8.4 20 14.4 35
480 1 6.3 13 12.0 25
480 3 6.3 8 12.0 15
400 3 7.8 11.2 13.2 19
TDB/7 SUPPLY WIRE REQUIREMENTS
Copper only, THHN (90°C)
20 QUARTS 40 QUARTS
VOLTAGE PHASE AWG mm AWG mm
208 1
38 12 — —6 8— —
240 1
38 10 3.0 —4 83.5 —
480 1
314 14 — —10 12
400 3 — 1.8 — 2.5

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A simple turn of the thermostat controls the Groen TBD/7 Kettle
Initial Start-Up
IMPORTANT:
BE SURE ALL OPERATORS READ, UNDERSTAND AND FOLLOW THE OPERATING
INSTRUCTIONS, CAUTIONS, AND SAFETY INSTRUCTIONS CONTAINED IN THIS MANUAL.
Now that the kettle has been installed, you should
test it to ensure that the unit is operating correctly.
1. Remove all literature and packing materials
from inside and outside of the unit.
2. Turnon the electrical service to the unit.
3. Pour 1-2 quarts of water into the kettle.
4. Following “To Start Kettle” instructions in the
“Operation” section of this manual, begin
heating the wateratthe highest thermostat
setting. The heating indicator light should
come onimmediately,and heating should
continue until the water boils.
5. To shut down the unit, turn the thermostat
dial to “OFF”.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT
COULD RESULT IN SEVERE BURNS.
AVOID ALL DIRECT CONTACT WITH HOT
FOOD OR WATER IN THE KETTLE.
DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
If the unit functions as described above, it is ready
for use. If the unit does not function as intended,
contact your local Groen Certified Service Agency.

OM-TDB/7
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On most TDB/7 units the jacket water level is
shown in a sight glass, right on the kettle.
Operation
The operator controls kettle heating withthe
thermostat dial. The dial turns heating element
electric power on or off and sets the operating
temperature of the kettle.
A. To Start Kettle
1. EVERYDAY make sure thatthe jacket
water level is above the mid-point of the
round sight glass (new models) or
between the marks onthe gauge glass
(old models). If the level is too low, see
“Jacket Filling and Water Treatment” on
page 10 of this manual.
2. Check the pressure gauge. If the gauge
does not show20 to 30 inches of vacuum
(that is, a reading of 20 to 30 below0), see
“Jacket Vacuum” on page 10 of this manual.
3. Turnon the electrical power to the unit.
4. Turnthe thermostat dial to the desired
setting. The heating indicator light indicates
that the kettle is heating, and cycling of the
light on and off indicates that the kettle is
being held at the set temperature. Once in
each cycle the contactors inthe support
housing will make a clicking sound. This is
normal.
B. To Transfer Product or Empty Kettle:
The kettle is designed and manufactured to be
tilted in a controlled manner. Grasp the insulated
plastic ball firmly. Maintain a firm grip on handle
whentilting, while keeping kettle bodyinatilted
positionand when SLOWLY returning the kettle
body to an upright position.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT
COULD RESULT IN SEVERE BURNS.
AVOID ALL DIRECT CONTACT WITH HOT
FOOD OR WATER IN THE KETTLE.
DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
TAKE SPECIAL CARE TO AVOID CONTACT
WITH HOT KETTLE BODY OR HOT
PRODUCT, WHEN ADDING INGREDIENTS,
STIRRING OR TRANSFERRING PRODUCT
TO ANOTHER CONTAINER.
CAUTION
DO NOT OVERFILL THE KETTLE WHEN
COOKING, HOLDING OR CLEANING.
KEEP LIQUIDS AT LEAST 2-3” (5-8 cm)
BELOW THE KETTLE BODY RIM TO
ALLOW CLEARANCE FOR STIRRING,
BOILING PRODUCT AND SAFE
TRANSFER.

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Lift the rear edge of the cover first.
WARNING
WHEN TILTING KETTLE FOR PRODUCT
TRANSFER:
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 LEFT OR RIGHT OF KETTLE
(DEPENDING ON HANDLE PLACEMENT)
WHILE POURING — NOT DIRECTLY IN
POUR PATH OF HOT CONTENTS.
5) POUR SLOWLY, MAINTAIN CONTROL OF
KETTLE BODY HANDLE AT ALL TIMES,
AND RETURN KETTLE BODY TO
UPRIGHT POSITION AFTER CONTAINER
IS FILLED OR TRANSFER IS COMPLETE.
6) DO NOT OVERFILL CONTAINER. AVOID
DIRECT SKIN CONTACT WITH HOT
CONTAINER AND ITS CONTENTS.
CAUTION
KEEP FLOORS IN FRONT OF THE KETTLE
WORK AREA CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN AT ONCE TO AVOID
SLIPS OR FALLS.
Common Accessories
1. Lift Off Cover
As with stock pot cooking, anoptional lift off
covercan speed up the heating of waterand
food products. A cover helps retainheat in
the cooking vessel and reduces the amount
of heat and humidity released into the
kitchen. Use of a cover can reduce some
product cook times and help maintain the
temperature, color and texture of products
being held or simmered for extended periods.
Make sure the plastic ball handle is secure on
the lift off cover before using. ALWAYS use
the plastic handle to place or remove cover
from the kettle. Wear protective oven mitts
and a protective apron.
When putting the 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. DIRECT SKIN CONTACT
COULD RESULT IN SEVERE BURNS.
AVOID ALL DIRECT CONTACT WITH HOT
FOOD OR WATER IN THE KETTLE.
DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
When removing cover:
a) Firmly grasp plastic handle
b) Lift rear edge (farthest from operator) 1-2”
(3-5 cm) to allow any steam and water vapor
to escape the cooking vessel. Wait 2-3
seconds.
c) Tilt cover to 45-60° angle and allow any hot
condensate or product to roll off cover back
into kettle.
d) Remove cover, ensuring that any remaining
hot condensate or product does not drip on
operator, floor or work surfaces.
e) Place cover on safe, flat, sanitary, out-of-
the-way surface, or return to kettle rim.
CAUTION
DO NOT TILT KETTLE BODY WITH COVER
IN PLACE. COVER MAY SLIDE OFF,
CAUSING INJURY TO OPERATOR.

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2. Basket Insert
An optional kettle basket insert can assist in
cooking water-boiled products including
eggs, potatoes, vegetables, shell fish, pasta
and rice. The nylon mesh liner must be used
when cooking product smaller than the mesh
size of the basket, whichis approximately
1/4” (6 mm). This includes rice and small
pastashapes.
Tips For Use.
a) Allow for the water displacement of the
basket and product to be cooked. This
may mean only filling the kettle half full of
water. Test the basket 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 A MINIMUM OF 2-3” (5-8 cm)
BELOW THE KETTLE BODY RIM TO
ALLOW CLEARANCE FOR STIRRING,
BOILING AND SAFE PRODUCT TRANSFER.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT
COULD RESULT IN SEVERE BURNS.
AVOID ALL DIRECT CONTACT WITH HOT
FOOD OR WATER IN THE KETTLE.
DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
b) Load basket on a level, stable worksurface.
c) Lift the loaded basket with both hands. Get
help from another person if the basket is too
heavy for safe handling.
d) Slowly lower product into kettle.
e) When removing basket withcooked product,
lift basket straight up, ensuring bottom of
basketclears the rim and pouring lip of the
kettle. Wear protective oven mitts and
protective apron.
d) Allow hot water to fully drain from product,
before moving basket awayfrom the kettle.
Do not rest kettle basket on kettle rim or
pouring lip. If basket is too heavy for
individual to lift and safely move, get help
from another person. Remove product
immediately from basket into another
container, being sure to avoid contact with
hot product and hot basket or. . .
e) Place basket withfood on stable, flat
surface, setting it 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 the user understand how the equipment
works.
When the operatorstarts up the kettle byturning
the operating thermostat dial from “OFF” to a
desired setting, the thermostat switch closes.
This lights up the heating indicator light and
causes the contactors to close, allowing power
to flow to heating elements. When the
temperature of the steam jacket reaches the
value corresponding to the dial setting, the
thermostat switch opens. This turns off the
heating indicator light and causes the contactors
to open, stopping the power to the heaters. As
soon as the thermostat senses that the kettle is
cooling belowthe set point, the thermostat
switch closes, the heating indicator light comes
on, the contactors close, and the heaters come
on again. On-off cycling continues, keeping the
kettle at the set temperature This is why the
heating indicatorlight cycles onand off during
normaloperation. Everytime the kettle is tilted,
the tiltcut-off switch interrupts the powersupply
to the heaters, so that the heating elements will
not operate while not submerged inthe jacket
water.
If steam pressure greater than 50 PSI is
generated in the jacket, the safety valve will open
and relieve the excess pressure.
In the event that the jacket water level gets too
lowand the heating elements overheat, the high-
limit control will openand shut off power to the
elements until the kettle cools. Setting the
operating thermostat dial to “OFF” shuts down all
control and heating circuits.

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The pressure gauge should show a vacuum
of 20 to 30 inches when the kettle is cold.
Maintenance
NOTICE: Contact Groen or an authorized Groen representative when repairs are required.
1. Periodic Maintenance
A Maintenance & 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 workwas 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: [BY OPERATOR]
a. Check the pressure/vacuum gauge every
day. The gauge should show a vacuum
of 20 to 30 inches, when the kettle is
cold. If it does not, see “Jacket Vacuum”
onpage 10.
b. Also check the jacket water level on a
dailybasis. It should be above mid point
of round sight glass (new models) or
between the marks onthe gauge glass
(old models). If the level is low, see
“Jacket Filling and Water Treatment” on
page 14.
[BY SERVICE TECHNICIAN]
c. Electrical wiring should be keptsecurely
connected and ingood condition.
d. The inside of the support housing should
be kept clean.
Test the safety valve at least twice each
month. Test the valve with the kettle
operating at 15 psi (105 kPa), by holding the
test lever for at least 5 seconds. Then
release the lever and let the valve snap shut.
If the lever does not activate, or there is no
evidence of discharge, orthe valve leaks,
immediatelydiscontinue use of 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.
DISCONNECT ELECTRICAL POWER FROM
THE KETTLE BEFORE ATTEMPTING TO
GREASE THE TRUNNION BEARINGS.
At least twice a year, grease the two
trunnion bearings. The bearings are located
within the kettle support housing. Remove
the access panels from the supporthousing
with a screwdriver to gain access to the
grease fittings. Use a lithium-based, multi-
purpose grease. Whenthe access panels
are removed, the mounting bolts for the
trunnion bearings and tilt switch can also be
checked for tightness. When finished,
reassemble access panels to support
housing.
2. Jacket Vacuum
When the kettle is cold, a positive pressure
reading or a reading around zero on the
pressure/vacuum gauge indicates the
presence of air inthe jacket. Airinthe jacket
slows downthe heating of the kettle.
To remove air:
a. Start the unit. (See the “Operation”
section of this manual.) (Be sure there is
water or product in the kettle when
heating).
b. When the pressure/vacuum gauge
reaches apositive pressure reading of 5
PSI, release the trapped air and steam
by pulling up or out on the safety valve

OM-TDB/7
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lever or ring for about 1 second. Repeat
this step, then let the pull ring or valve
lever snap back into the closed position.
3A. Jacket Filling and Water Treatment (For
units manufactured before July 1, 1992) *
The jacket was charged at the factory with
the proper amount of treated water. You
may need to restore the waterto its proper
level, either because water was lost as
steam during venting or because treated
water was lost by draining.
a. If youare replacing waterlost as steam,
use distilled water. If youare replacing
treated water that ran out of the jacket,
prepare more treated water as directed
in step 4, “Water Treatment Procedure.”
b. Allowthe kettle to cool. Turn the elbow
onthe safetyvalve counterclockwise (to
avoid thread damage) until the opening
of the elbowfaces upward.
c. Open the safetyvalve and pourthe
water or treated water in at the elbow
until the water level rises to a point
between the marks onthe gauge glass.
CAUTION
BEFORE YOU HEAT THE KETTLE FOR
ANY PURPOSE, TURN THE ELBOW
CLOCKWISE UNTIL THE OPENING AGAIN
FACES DOWNWARD.
e. Air introduced to the jacket during the
filling operationmust be removed to
obtainefficient heating. See “Jacket
Vacuum” above.
* Date of manufacture stamped on National
Board data plate.
3B Jacket Filling and Water Treatment (For
units manufactured July 1, 1992 to Feb.
6, 1995) *
The jacket was charged at the factory with
the proper amount of treated water. You
may need to restore the waterto its proper
level, either because water was lost as
steam during venting or because treated
water was lost by draining.
IMPORTANT: The pressure gauge must read 0
PSI or less before you fill jacket
with water.
To fill jacket with water:
a. If youare replacing waterlost as steam,
use distilled water. If youare replacing
treated water that ran out of the jacket,
prepare more treated water as directed
in step 4, “Water Treatment Procedure.”
b. Tilt kettle 90° to afull pour position.
c. Remove fill plug with open-end wrench or
crescent wrench.
d. Open shutoff valve (turn handle 90° on
ball valve).
e. Use a funnel and add water to jacket.
f. Check water level in jacket by tilting
kettle to operating positionand viewing
water gauge glass.
g. Repeat steps e and f until water level is
between the maximum and minimum
indicationmarks onthe water gauge
glass.
h. Close shutoff valve, install fill plug, and
returnkettle to operating position.
Followprocedure under “Jacket Vacuum” to
remove air from kettle jacket.
* Date of manufacture stamped on National
Board data plate.
C Jacket Filling and Water Treatment (For
units manufactured after Feb. 6 1995) *
The jacket was charged at the factory with
the proper amount of treated water. You
may need to restore the waterto its proper
level, either because water was lost as
steam during venting or because treated
water was lost by draining.
IMPORTANT
Pressure gauge must read 0 PSI or less
before you fill jacket with water.
To fill jacket with water:
a. If you are replacing water lost as steam,
use distilled water. If youare replacing
treated water that ran out of the jacket,
prepare more treated water as directed
in step 4, “Water Treatment Procedure”.
b. Remove fill plug with open-end wrench or
crescent wrench.
c. Open shutoff valve (turn handle 90° on
ball valve).
d. Use a funnel and add water to jacket.
e. Check water level in jacket, by viewing
water level indicator glass.
f. Continue to add water until the water
level indicator glass is 3/4 full.
g. Close shutoff valve, and install fill plug.
Followprocedure in“Jacket Vacuum” to
remove air from kettle jacket.
* Date of manufacture stamped on National
Board data plate.

OM-TDB/7
15

OM-TDB/7
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4. Water Treatment Procedure
WARNING
TO AVOID INJURY, READ AND FOLLOW
ALL PRECAUTIONS STATED ON THE
LABEL OF THE WATER TREATMENT
COMPOUND.
(1) Fill the mixing container with the
measured amount of water required.
(See the table at right). Distilled water is
recommended.
(2) Hang a strip of pHtest paper on the rim
of the container, with about 1 inch of the
strip below the surface of the water.
(3) Measure the water treatment compound
you will be using. (One way to do this is
to add the compound from a measuring
cup.)
(4) Stir the water continuously, while you
slowly add water treatment compound,
until the water reaches a pH between
10.5 and 11.5. Judge the pHby
frequentlycomparing the colorof the test
strip withthe color chartprovided inthe
pHtest kit. Color blind people mixing the
treated water solution must use an
electroanalytical instrument to measure
the pH level or have a person that is not
color blind read the test strip color level.
(5) Record the exact amounts of water and
treatment compound used. These
amounts may be used again, if the same
sources of water and compound are
employed to refill the jacket in the future.
However, it is advisable to check the pH
every time treated water is prepared.
Model Kettle
Capacity Jacket Capacity
TDB/7-20 20 quarts 4 quarts
TDB/7-40 40 quarts 5 quarts
5. Component Replacement
WARNING
BEFORE REPLACING ANY PARTS,
DISCONNECT THE UNIT FROM THE
ELECTRIC POWER SUPPLY.
All internal wiring is marked as shown on the
circuit schematic drawings. Be sure that new
components are wired in the same manner
as the old components.

OM-TDB/7
17
Scrapers or steel wool can harm the kettle
surface.
Use only a sponge, cloth or plastic brush to
clean the kettle.
Cleaning
1. Suggested Tools:
a. Cleaner, suchas Klenzade HC-10 orHC-
32 from ECOLAB, Inc.
b. Kettle brushes ingood condition.
c. Sanitizer suchas Klenzade XY-12.
d. Film remover such as Klenzade LC-30.
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.
WARNING
AVOID ANY DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT COULD
RESULT IN SEVERE BURNS.
b. Scrape and flush out food residues. Be
careful not to scratch the kettle with
metal implements.
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. Rinse the kettle thoroughly withhot
water, then drain completely.
e. As part of the daily cleaning program,
clean soiled external and internal
surfaces. Remember to check the sides
of the unit and control housing.
f. To remove stuck materials, use a brush,
sponge, cloth, plastic or rubber scraper,
or plastic wool with the cleaning solution.
To reduce effort required inwashing, let
the detergent solutionsit inthe kettle and
soak into the residue. Do NOT use
abrasive materials or metal tools that
might scratch the surface. Scratches

OM-TDB/7
18
make the surface harder to clean and
provide places for bacteriato grow.
Do NOT use steel wool, whichmay leave
particles in the surface and cause
eventual corrosion and pitting.
g. The outside of the unitmay be polished
with a stainless steel cleaner such as
“Zepper” from Zep Manufacturing Co.
h.h. Whenequipment needs to be sanitized,
use asolution equivalent to one that
supplies 200 parts per million available
chlorine. Obtain advice on sanitizing
agents from your supplier of sanitizing
products. 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.
LONGER CONTACT CAN CAUSE STAINING
AND CORROSION.
i. It is recommended that each piece of
equipment be sanitized just before use.
j. 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.
k. If cleaning problems persist, contact
your cleaning product representative for
assistance. The supplier has a trained
technical staff with laboratory facilities to
serve you.

OM-TDB/7
19
Troubleshooting
Your Groen kettle is designed to operate smoothly and efficiently if properly maintained. However, the
following is alistof checks to make inthe event of aproblem. Wiring diagrams are furnished inside the
service panel. If an item on the list is followed by X, the work should be done by a qualified service
representative.
USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN OR THEIR
AUTHORIZED DISTRIBUTORS CAN CAUSE INJURY TO THE OPERATOR AND DAMAGE TO THE
EQUIPMENT AND WILL VOID ALL WARRANTIES.
SYMPTOM WHO WHAT TO CHECK
Xindicates items whichmust be performed byan authorizedtechnician.
Kettle will not heat, and heating
indicator will not come on. User a. Electric power supply to the unit. b. Water level in jacket.
Auth Service
Rep Only c. Control circuit fuses. Replace a blown fuse only with a fuse of the same AMP rating. X
d. For loose or broken wires. X
e. Tilt cut-off switch. X
f. That pressure switchis open. X
g. Operationof variable thermostat. X
h. Low water cutoff. X
Kettle will not heat, but heating
indicator comes on. Auth Service Rep Only a. Contactor. X b. Heater elements withohmmeter for ground
short or openelement. If element is defective,
call Groen. X
Kettle continues heating after it reaches
the desired temperature User a. Thermostat dial setting.
Auth Service
Rep Only b. Thermostat circuit for short. X c. Thermostat operation. The thermostat should
clickwhen the dial is rotated above and below
the setting for the temperature of the kettle. X
d. Contactor, to determine whether it is
energized or stuck. X
Kettle stops heating before it reaches
the desired temperature. User a. Thermostat dial setting.
Auth Service
Rep Only b. Thermostat calibration. X c. Thermostat operation. The thermostat should
clickwhen the dial is rotated above and below
the setting for the temperature of the kettle. X
Kettle heats slowly User a. For air in the jacket. See “Jacket Vacuum” in
the “Maintenance” section of this manual.
Auth Service
Rep Only b. Heater elements with ohmmeter for ground short or openelement. If anelement is
defective, call Groen. X
c. Voltage of mainpower source. X
Safety valve pops. User a. For air in the jacket. See “Jacket Vacuum” in
the “Maintenance” section of this manual.
Auth Service
Rep Only b. Pressure switchsetting. X c. Thermostat operation. Thermostat should
clickwhen the dial is rotated above and below
the setting for the temperature of the kettle. X
d. Safetyvalve. If the valve pops atpressures
below 49 PSI, replace it. X
e. Contactor, to determine whether it is de-
energized. X

OM-TDB/7
20
l. Parts List
(For units manufactured before September 1, 1988) *
To order parts, contactyour 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.
1 Kettle Assembly TDB/7-20 003144 24 Street EL 1/4” IPS X 90” 010668
Kettle Assembly TDB/7-40 003145 25 Block, Pillow, 1-½” 002989
2 Base Assembly 054174 26 Collar, Set 003118
3 Bottom Cover 003141 27 Set Screw 3/8” - 16NC x ½” 003117
4 Gasket, U-channel 007937 28 Micro Switch 002982
5 Pedestal Weldment 002990 29 Bracket, Micro Switch 002988
6 Pedestal Cladding, 480V Only 003148 30 Contactor (See table)
Pedestal Cladding, 208-240V 003147 31 Transformer 012827
7 Screw #8 X ½” 005002 32 Fuse, 3 AMP, 480VOnly 002651
8 Cap, Pedestal 003137 33 Terminal Block, 208-240V 002864
9 Cover, TDB/7-40 003136 Terminal Block, 480V 003119
Cover, TDB/7-20 003139 34 Fuse Holder 002944
10 Screw, RHMS #8-32 X 3/8” 005724 35 Fuse (See table)
11 Nut, KEPS 1/4” X 20 NC 012940 36 Screw, RHMS #8-32 X 3/4” 012656
12 Handle Assembly 012695 37 Spacer 003146
Ring, Tolerance 012692 38 Screw Hex Head ½”-13 NCx3½” 003285
13 Bumper, TDB/7-40 003248 39 Nut, Hex ½” - 13 NC 005705
Bumper, TDB/7-20 003241 40 Lock Washer ½” 005735
14 Washer (As Required) 003242 41 Pressure Gauge 001594
Washer (As Required) 003243 42 Fittings, Gauge Glass 002845
15 Screw, Hex Head ½” - 13 NC X 1” 005622 43 Rubber Gauge Glass Gasket 008917
16 Thermostat 012313 44 Washer (With Item42) Õ
17 Screw, RHMS #6-32 NC X ½” 012603 45 Hex Nut (With Item 42) Õ
18 Knob, Thermostat 002868 46 Glass, Gauge 002987
19 Pilot Light, 208-240V 016028 47 Rod, Gauge Glass Guard 003127
Pilot Light, 480V 002986 48 Nut, Dome #10 - 24 NC 005470
20 Basket for TDB/7-20 001607 49 Thermostat, High Limit 004588
Basket for TDB/7-40 001121 Bracket, Bottom 002916
21 Cover, One Piece Lift-off, TDB/7-40 013496 Grommet, Thermostat 001518
Cover, One Piece Lift-off, TDB/7-20 001566 Grommet, Trunnion 003492
22 Knob, Maroon Ball 012691 Grommet 007400
23 Valve, Safety 005587 Elbow 004185
ELECTRICAL PARTS TABLE
Model KW AMP Contactor Pilot Light Transformer Wire Harness Fuse
TDB/7-20
208V/1 Ph 6.3 31 009173 016028 None 003175 002945
240V/1 Ph 6.3 27 009178 016028 None 003175 002945
480V/1 Ph 6.3 14 009576 002986 012827 003172 002651
208V/3 Ph 6.3 18 009210 016028 None 003174 002945
240V/3 Ph 6.3 16 009210 016028 None 003174 002945
480V/3 Ph 6.3 8 009574 002986 012827 003170 002651
TDB/7-40
208V/1 Ph 10.8 52 013368 016028 None 003168 002945
240V/1 Ph 12 50 013368 016028 None 003168 002945
480V/1 Ph 12 25 009576 002986 012827 003166 002651
208V/3 Ph 10.8 30 009210 016028 None 003167 002945
240V/3 Ph 12 30 009210 016028 None 003167 002945
480V/3 Ph 12 15 009574 002986 012827 003165 002651
* Date of manufacture is stamped on National Board data plate.