Groen TDB-7-20-SN1 Installation Manual
IMPORTANT INFORMATION
IMPORTANT INFORMATION2
IMPORTANT INFORMATIONIMPORTANT INFORMATION
2KEEP F OR O PER ATO R
KEEP FO R OP ER ATOR 2
22
KEEP FO R OP ER ATORKEEP FO R OP ER ATOR
2IMPORTANT INFORMATION
IMPORTANT INFORMATION
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IMPORTANT INFORMATIONIMPORTANT INFORMATION
OPERATOR MANUAL OM-TDB/7
Part Number 121002 DOMESTIC
MODEL: TDB/7
Steam Jacketed Kettl e
Self-Contained
Electrically heated
Table t op mounte d
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 F L AMMABLE VAPORS
AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
OM-TDB/7
IMPORTANT — READ FIRST — IMPORTANT
CAUTION: BE SURE ALL OPERATORS READ, UNDERSTAND AND FOLLOW THE OPERATING
INSTRUCTIONS,
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 IN SEVER E BURNS.
WARNING: AVOID ALL DIRECT CONTACT WITH HOT FOOD OR WATER IN THE KETTLE. DIRECT
CONTACT COULD RESULT IN SEVER E BURNS.
CAUTION: DO NOT OVER FILL THE KETTLE WHEN COOKING, HOLDING OR CLEANING. KEEP
LIQU IDS A MINIMUM OF 2-3” (5- 8 cm) BELOW THE KETTLE BODY R IM TO ALLOW
CLEARANCE FOR STIRRING, BOILING AND SAFE PRODUCT TRANSFER.
WARNING: TAKE SPECIAL CARE TO A VOID CON TACT WITH H OT KETTLE BODY OR HOT PRODUCT
WHEN ADDING INGREDIENTS, STIRRING OR TRANSFERRING PRODUCT TO ANOTHER
CONTAINER.
WARNING: WHEN TILTING KETTLE FOR PRODUCT TRANSFER:
WEAR PROTECTIVE OVEN MITT AND PROTECTIVE A PRON.
1)
USE CONTAINER DEEP ENOUGH TO CONTAIN A ND MINIMIZ E PRODUCT SPLASHI NG.
2)
3) PLACE CONTAINER ON STABLE, FLAT SURFACE, AS CLOSE TO KETTLE AS
POSSIBLE.
4) STAND TO LEFT OR RIGHT SIDE OF KETTLE (DEPENDIN G O N TILTING HANDLE
PLACEMENT) WHILE POURING . DO NOT STAND DIRECTLY IN POUR PATH OF HOT
CONTENTS.
POUR SLOWLY, MAINTAIN CONTROL OF KETTLE BODY HANDLE AT ALL TIMES, AND
5)
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.
CAUTIONS, AND SAFETY INSTRUCTIONS CONTAINED IN THIS MANUAL.
CAUTION: KEEP
WARNING: FAILURE TO CHECK SAFETY VALVE OPERATION PERIODICALLY COULD RESULT IN
WARNING: WHEN TESTING, AVOID ANY EXPOSURE TO THE STEAM BLOWI NG OUT OF THE SAFETY
WARNING: TO AVOID INJURY, READ AND FOLLOW ALL PRECAUTIONS STATED ON THE LABEL OF
WARNING: BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER
FLOORS IN FRONT OF KETTLE WORK AREA CLEAN AND DRY. IF SPILLS OCCUR,
CLEAN
PERSONAL INJURY AND/OR DAMAGE TO EQUIPMENT.
VALVE. DIRECT CONTACT COULD R ESULT IN SEVERE BURNS.
THE WATER TREATMENT COMPOUND.
SUPPLY.
IMMEDIATELY, TO AVOID SLIPS OR FALLS.
2
OM-TDB/7
IMPORTANT — READ FIRST — IMPORTANT
WARNING: KEEP WATER AND SOLUTIONS OUT OF CONTROLS A ND ELECTRI CAL EQUIPMENT.
NEVER SPRAY OR H OSE THE SUPPORT HOUSING OR ELECTRIC AL CONNECTIONS.
CAUTION: MOST CLEANERS ARE HARMFUL TO THE SKIN, EYES, MUCO US MEMBRANES AND
CLOTHING . PRECAUTIONS SHOULD BE TAKEN . W EAR RUBBER GLOVES, GOGGLES OR
FACE SHIELD AND PROTECTIVE CLOTHING. CAREFULLY READ THE WARNINGS AND
FOLLOW THE DI RECTIONS ON THE LA BEL OF THE CLEAN ER TO BE USED.
CAUTION: USE
OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN OR THEIR
AUTHORIZED
EQUIPMENT, AND WILL VOID ALL WARRANTIES.
DISTRIBUTORS CAN CAUSE OPERATOR INJURY AND DAMAGE TO THE
IMPORTANT:
SERVICE PERFORMED BY OTHER THAN FACTORY AUTHORIZED PERSONNEL WILL VOID
WARRANTIES.
3
OM-TDB/7
Table of Contents
IMPORTANT OPERATOR WARNINGS ................................................................ 2
EQUIPMENT DESCRIPTION......................................................................... 5
INSPECTION & UNPACKING ......................................................................... 7
INSTALLATION .................................................................................... 8
INITIAL START-UP ................................................................................. 9
OPERATION...................................................................................... 10
SEQUENCE OF OPERATION ....................................................................... 12
MAINTENANCE ................................................................................... 13
CLEANING ....................................................................................... 17
TROUBLESHOOTING.............................................................................. 19
PARTS LISTS
Units Manufactured Before Sept. 1, 1988 ........................................................... 20
Units Manufactured Between Sept. 1, 1988 and Ju ly 1, 1992 ........................................... 22
Units Manufactured Between July 1, 1992 and Feb. 6, 1995 ............................................ 24
Units Manufactured After Feb. 6, 1995 ............................................................. 26
DIAGRAMS & SCHEM ATICS
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 a nd
Before Feb. 6, 1995 ......................................................................... 38
Units Manufactured After Feb. 6, 1995 ............................................................. 39
SERVICE LOG .................................................................................... 42
REFERENCES .................................................................................... 42
WARRANTY ...................................................................................... 43
4
Equi p men t D escr i p ti o n
OM-TDB/7
The Groen TD B/7 is a table top, til ting, steam
jacketed k ettle w ith a th ermostatically controlled,
self-contained, electrically-h eated steam supply a nd
appropriate con trols, m ounted on a sturdy base. Th e
Model TDB/ 7 is available in 20 or 40 - quart capacity.
The body of the TDB/ 7 Kettle is constru cted of
stainless steel, w elded into one solid piece. Th e
kettl e is furn ished with a reinfor ced rim and a
butterfly shaped pouri ng lip. It has a st eam jacket
rated for worki ng pressur es up to 50 PSI. Kettle
fin ish is 180 emery grit on the inside and bright semideluxe 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 high on a table top.
A built-in stea m generat or, sized for the k ettle
capacity and heated by electricit y, delivers stea m
into the ja cket. “Airless” oper ation of the stea m
jacket perm its uniform, efficient heating at
temperatu res a s low as 150°F a nd as hi gh as 295°F.
In addition to th e adjustable thermost at for operatin g
control, the unit has a tilt cut-off switch, low water
cut-off, safety val ve, an d high- lim it pressu re switch
as safety features. A heating indicator light,
pressure gauge, a nd sight gla ss are prov ided for
monitoring kettle operation .
A single electrical connection is required for
installation. The u nit ma y be ordered for use w ith
208/240 or 480 volt power. A ll kettles ar e wired for
three-ph ase operation. For sin gle-phase conversion,
see the wiring diagrams in this manual.
KETTLE CHARACTERISTICS
TDB/7-20+ TDB/7-40
Kett le Capacity 20 qts. 18.8 l iters 40 qts. 37.6 liters
Jacket C apacity 4 qts. 3.7 l iters 5 qts. 4.7 l iters
Diamet er 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
5
OM-TDB/7
New/Current Models
Pre- Feb . 1995 Models
Opti onal equ ipment av ailable w ith a ny model:
Stan d th at suppor ts the uni t a nd holds a pan in position for filling
1.
Lift-off cover
2.
Basket insert
3.
Fill faucet
4.
Manual stirrers
5.
Motor driven agi ta tor
6.
6
Insp ecti o n & U n p acki n g
OM-TDB/7
The unit will arrive in a heavy shipping carton and will
be attach ed 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 WA LLS OF THE CARTON.
Carefully cut the polyester straps around the ca rton
and detach the sides of the box from t he skid. Pull
the carton up off the unit.
Thoroughly inspect the unit for concealed damage.
Report any shi ppin g damage or i ncorrect shipments
to t he delivery agent.
Writ e down the model number, serial nu m ber, and
installation date, and retain this information for future
reference. Space for th ese entries i s prov ided a t the
top of the Service Log at the back of this manual.
Keep this manual on file and available for operators
to use.
CAUTION
T HIS UNIT WEIGHS 140 TO 163 LB. (64 TO
74 KG). INSTALLER SHOULD OBTAIN
HELP AS NEEDED TO LIFT T HIS WEIGHT
SAFELY.
When in sta llation is to begin, ca refu lly cu t the stra ps
which hold the unit on the skid. Lift the unit straight up
off the skid. Ex amine packin g m aterials to be su re
loose parts are not discarded wi th th e m aterials.
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-th rea din g
fin e socket th rea ds.
The TDB/7 i s shipped from the factory strapped on a
pallet. The tilt handle is inside the kettle.
7
OM-TDB/7
Installation
The Groen Kettle is provided w ith
complete internal wiring. It is ready for
immediate connection. A wiring diagram
is pr ovided in th is manual and on the
inside of t he control h ousing service
panel. Any mechanical or electrical changes must be
approved in by Gr oen’s Food Service En gin eering
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 unit has been oper ated at th e factory
to test all controls and heater elements.
1. Set the kettle in place a nd level it. The base
should be securely fastened to a t able or w ork
surface. Four 3/8”-16 N .C. threaded coupl ings
are provided in th e base of u nit. In sta llation
under a vent ilation hood is recommended.
2. Provide electrical pow er a s specified on the
elect rical in forma tion plate attached to th e
equipmen t. O bserv e loca l codes a nd/or The
National Electrical C ode in accordance w ith
ANSI/NFPA 70 - (current edition).
The equipm ent is shipped ready for three phase
3.
operation. Refer to the wir in g diag ra m for sin gle
phase operation.
Bri nging the electrical service throu gh the
4.
entran ce at the rea r of the su pport housin g,
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.
Confirm that the jacket water level is above
5.
mid point of sight glass (new models) or
between th e m arks on th e gauge gla ss (old
models). If the level is low, follow the
instructions under “Jacket Filling and Water
Treatment” in the “Maintenance” section of
the manual.
The open en d of the elbow on the ou tlet of
6.
the safety valv e m ust be directed dow nward
on old models. If it is n ot, turn th e elbow to
the correct position . On new models the
safet y val ve points down.
Any mechanical or electrical change must be
7.
approved by the Gr oen Food Service
Engineering Depart m ent.
TDB/7 ELECTRICA L 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 R EQUIREMENTS
Copper only, THHN ( 90°C)
20 QUARTS 40 QUARTS
VOLTAGE PHASE AWG mm AWG mm
208 1
3
240 1
3
480 1
3
400 3 — 1.8 —
8
12——
8
3.0
10
—
1414——10
8
12
6
—
8
—
4
3.5
8
—
2.5
OM-TDB/7
Initial Start-Up
IMPORTANT:
BE SURE ALL OPERATORS READ, UNDERST AND AND FOLLOW THE OPERATING
INSTRUCTIONS, CAUTIONS, AND SAFETY INSTRUCTIONS CONTAINED IN THIS MANUAL.
Now that the kettle ha s been installed, you should
test it to en sure th at the unit is operating correctly.
1. Remove a ll literature and packing materials
from i nside an d outside of th e unit.
2. Turn on th e electrical serv ice 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
heatin g th e water at th e highest th ermost at
setting. The heating indicator light should
come on immediately, an d heating shoul d
continue until the water boils.
5. To shut down th e unit, turn th e thermostat
dial to “OFF”.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT
COULD RESULT IN SEVER E BURNS.
AVOID ALL DIRECT CONTACT WITH HOT
FOOD OR WATER IN THE KETTLE.
DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
If the unit fun ctions as described above, it is rea dy
for u se. If th e unit does not function as in ten ded,
contact y our local Gr oen Certified Service Agency .
A simple turn of the thermostat controls the Groen TBD/7 Kettle
9
OM-TDB/7
The operator controls kettle hea ting with the
thermosta t dial. The dia l tur ns heat in g elemen t
elect ric power on or off and sets the operatin g
temperatu re of the k ettle.
Operation
2. Check th e pressu re gauge. If t he gauge
3. Turn on th e electrical power to the u nit.
4. Turn the therm osta t dial to the desired
To Transfer Product or Empt y Kettle:
B.
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
when tilting, w hile keepin g kettle body in a tilted
posit ion and when SLOWLY retu rn in g th e kettle
body to an upright position .
(ol d m odels). If the level is too l ow, see
“Jacket Filling and Water Treatment” on
page 10 of this manual.
does not sh ow 20 to 30 inches of v acuum
(t hat is, a rea ding of 20 to 30 below 0), see
“Jacket Vacuum” on page 10 of this manual.
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 cy cle the contactors in the support
housing will make a clicking sound. This is
normal.
A. To Start Kettle
EVERY DAY ma ke sure that the ja cket
1.
water level is above the mid-point of the
roun d sigh t glass (new models) or
between th e m arks on th e gauge gla ss
On most TDB/7 units the jacket water level is
shown in a sight gla ss, righ t on th e kettle.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT
COULD RESULT IN SEVER E 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 ST IRRING,
BOILING PRODUCT AND SAFE
TRANSFER.
10
WARNING
WHEN TILTING KETTLE FOR PRODUCT
TRANSFER:
1) WEAR PROTECTIVE OVEN MITT AND
PROTECTIVE APRON.
USE DEEP CONTAINER TO CONTAIN
2)
AND MINIMIZE PRODUCT SPLASHING.
PLACE CONTAINER ON STABLE, FLAT
3)
SURFACE, AS CLOSE TO KETTLE AS
POSSIBLE.
STAND TO LEFT OR RIGHT OF KETTLE
4)
(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.
DO NOT OVERFILL CONTAINER. AVOID
6)
DIRECT SKIN CONTACT WITH HOT
CONTAINER AND ITS CONTENTS.
OM-TDB/7
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT
COULD RESULT IN SEVER E 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 rea r
(3-5 cm) to allow any steam and water vapor
to escape the cook in g vessel. Wait 2- 3
seconds.
c) Tilt cover to 45-60° angle and allow any hot
edge (fa rthest from operator) 1-2”
CAUTION
KEEP FLOORS IN FRONT OF THE KETTLE
WORK AREA CLEAN AND DRY. IF SPILLS
OCCUR, CLEAN AT ONCE TO AVOID
SLIPS OR FA LLS.
Common Accessories
Lift Off Cove r
1.
As with stock pot cooking, an optional lift off
cover can speed up the heating of water and
food produ cts. A cover helps ret ain h eat in
the cookin g vessel an d redu ces th e amount
of heat and humidity released into the
kitchen. Use of a cover can reduce some
product cook times and help maintain the
temperatu re, color an d tex tu re of products
being held or simmered for extended periods.
Make sure the plastic ball handle is secure on
the li ft off cover befor e using. A LWAYS u se
the plastic handle to place or remove cover
from t he kettle. Wea r protective oven mit ts
and a protective apron.
Lif t the rear edge of the cover first.
condensa te or produ ct to roll off cover back
into kettle.
d) Remove cover, ensuring that any remaining
hot condensate or produ ct does n ot drip on
operator, fl oor or work surfaces.
e) Place cover on safe, flat, sanitary, out-of-
the-way surface, or return to kettle rim.
When putting the cover on th e kettle, position
it on top of kett le rim, with its fl at edge facing
the pouring lip.
CAUTION
DO NOT TILT KETTLE BODY WI TH COVER
IN PLAC E. COVER MA Y SLIDE OFF,
CAUSING INJURY TO OPERATOR.
11
OM-TDB/7
2. Basket Insert
An optional k ettle ba sket insert can assi st in
cooking water -boiled products inclu din g
eggs, pot atoes, vegeta bles, shell fish, pasta
and rice. The nylon mesh liner must be used
when cooking product smaller than the mesh
size of the basket, w hich is approximat ely
1/4” (6 mm). This includes rice and small
pasta shapes.
Tips For Use.
a) Allow for the water displacement of the
basket and product t o be cooked. This
may mean only filling the kettle half full of
water. Test the basket and produ ct
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.
AVOID ALL DIRECT CONTACT WITH HOT
FOOD OR WATER IN THE KETTLE.
DIRECT CONTACT COULD RESULT IN
SEVERE BURNS.
Load bask et on a level, stable wor k surfa ce.
b)
Lift th e loaded basket with both hands. Get
c)
help from an oth er per son if the basket is too
heavy for safe handling.
Slowly lower product into kettle.
d)
When removing ba sket with cooked product ,
e)
lift basket straight up, ensuring bottom of
basket clea rs the rim a nd pouring lip of the
kettle. Wear protective oven mitts and
prot ective apron .
Allow hot water to fully drain from product,
d)
before moving ba sket aw ay from t he kettle.
Do not rest kettle basket on kettle rim or
pouring lip. If ba sket is too hea vy for
individual to lift and safely move, get help
from ano th er person. Remove product
immedia tely from basket into an oth er
container, being sure to avoid contact with
hot product an d hot bask et or. . .
e) Place ba sket wi th food on stable, fla t
surface, setting it inside a solid steamer or
bake pan, to catch any remaining hot water
draining from produ ct.
WARNING
AVOID ALL DIRECT CONTACT WITH HOT
SURFACES. DIRECT SKIN CONTACT
COULD RESULT IN SEVER E BURNS.
Sequen ce o f Op er ati o n
The fol low in g “action-r eaction ” outline is prov ided
to help the user understand how the equipment
works.
When th e opera tor sta rts up the k ettle by tu rn in g
the operatin g th ermost at dial from “OFF” t o a
desir ed settin g, the ther m osta t switch closes.
This lights up the heating indicator light and
causes the contactors to close, allow in g power
to flow to heating elements. When the
tempera tu re of the steam jacket rea ches the
value corresponding to the dial setting, the
therm osta t swit ch opens. This turn s off t he
heating indicator light and causes the contactors
to open, stopping the power t o th e heater s. As
soon as the thermostat senses that the kettle is
cooling below t he set point, th e th ermost at
switch closes, the h e ating in dica tor light comes
on, the con tactors close, and the heaters come
on again. O n-off cycli ng continues, k eepin g th e
kettle at the set temperature This is why th e
heating in dicator light cycles on a nd off during
norma l operation. Ev ery time th e kettle i s tilted,
the tilt cut-off switch in terru pts the power supply
to t he heat ers, so th at th e heating element s will
not operate whil e not submer ged in th e ja cket
water.
If steam pressure greater than 50 PSI is
generated in the jacket, the safety valve will open
and r elieve t he excess pressu re.
In the event that the jacket water level gets too
low a nd the heating elements overheat, th e highlimit control will open and shut off pow er to th e
elements until the kettle cools. Setting the
operating th ermost at dial to “OFF” shu ts down all
control and heating circuits.
12
Maintenance
NOTICE: C ontact Groen or an aut horized Groen representative when repairs are required.
Periodic Maintenance
1.
A Maintenance & Service Log is provided at
the back of this manual with the warranty
information. Each time maintenance is
perform ed on your G roen kettle, enter the
date on which the work w as done, wh at wa s
done, and who did it . Keep t his m anual on
file and available for operators to use.
Periodic inspection will minimize equipment
down time a nd incr ease the efficiency of
operation. Th e following points should be
checked:
[BY OPERA TOR]
a. Check th e pressure/vacuum ga uge every
day. The gauge shou ld sh ow a vacu um
of 20 to 30 inches, when the k ettle is
cold. If it does n o t, see “Jacket Vacuum”
on page 10.
month. Test the valve with the kettle
operating at 15 psi (105 kPa ), by holding the
test lev er for at least 5 secon ds. Then
release the lever and let the valve snap shut.
If the lever does not a ctiva te, or there is no
evidence of di scharge, or the val ve leaks,
immedia tely discontinue use of the kettle an d
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 SEVER E BURNS.
DISCONNECT ELECTRICAL POWER FROM
THE KETTLE BEFORE ATTEMPTING TO
GREASE THE TRUNNION BEARINGS.
OM-TDB/7
The pressure gauge should show a vacuum
of 20 t o 30 inches when t he kettle is cold.
b. Also check the jack et water level on a
daily ba sis. It should be a bove mid poin t
of rou nd sight glass (new models) or
between th e m arks on th e gauge gla ss
(ol d m odels). If the level is low, see
“Jacket Filling and Water Treatment” on
page 14.
[BY SERVICE TECHNICI AN]
c. Electrica l w irin g should be k ept secu rely
connected and in good condition .
d. The inside of t he support housing should
be kept clean .
Test the safety valve at least twice each
13
At least twice a year, grease the two
trunnion bearings. The bearings are located
within the kettle support hou sin g. Remove
the access panels from th e support h ousing
with a screwdriver to gain access to the
grease fittings. Use a lithium-based, multipurpose grease. When the access panel s
are removed, the m ounting bolts for the
trunnion bearings and tilt switch can also be
checked for tightness. When fi nished,
reassembl e access panels to support
housing.
Jacket Vacuum
2.
When th e kettle i s cold, a positive pressure
reading or a reading around zero on the
pressure/v acuum gauge in dica tes the
presence of air in th e ja cket. Air in the jack et
slows dow n the heating of the k ettle.
To remove air:
a. Start the unit. (See the “Operation”
section of this manual.) (Be sure there is
water or produ ct in the kettle when
heating).
b. Wh en the pressure/v acu um gauge
reach es a positive pressure read ing of 5
PSI, r elea se the tr apped air and stea m
by pulling up or out on the safety valve
OM-TDB/7
lever or ring for about 1 second. R epeat
this step, then let the pull ring or valve
lever sna p back in to the closed positi on.
Jacket Filling and Water Treatment (For
3A.
units manufactured before July 1, 1992) *
The jacket was charged at th e factory with
the proper am ount of treated water. Y ou
may need to r estore th e water to its proper
level, eit her because w ater w as lost as
steam du ring vent in g or beca use treated
water was lost by draining.
If you are replacing water lost as steam,
a.
use disti lled water . If you are replacing
tr eated water tha t ran out of the jacket,
prepare m ore trea ted w ater a s directed
in step 4, “Water Treatment Procedu re.”
All ow the k ettle to cool. Turn the elbow
b.
on the safety v alve cou nterclockw ise (to
avoid th rea d damage) until the open in g
of th e elbow faces u pward.
c. Open th e safety val ve and pour th e
water or treated water in at the elbow
until the water level rises to a point
between th e m arks on th e gauge gla ss.
CAUTION
BEFORE YOU HEAT THE KETTLE FOR
ANY PURPOSE, TURN THE ELBOW
CLOCKWISE UNTIL THE OPENING AGAIN
FACES DOWNWARD.
e. Air i ntroduced to the jack et du ring the
filling operation m ust be remov ed to
obtain efficient hea ting. See “Jacket
Vacuum” above.
* Date of manufacture stamped on National
Board dat a plate.
Jacket Filling and Water Treatment (For
3B
units manufactured July 1, 1992 to Feb.
6, 1995) *
The jacket was charged at th e factory with
the proper am ount of treated water. Y ou
may need to r estore th e water to its proper
level, eit her because w ater w as lost as
steam du ring vent in g or beca use treated
water was lost by draining.
IMPORTANT: The pressure gau ge m ust rea d 0
PSI or less before you fill jacket
with wa ter.
To fill jacket with water:
If you are replacing water lost as steam,
a.
use disti lled water . If you are replacing
tr eated water tha t ran out of the jacket,
prepare m ore trea ted w ater a s directed
in step 4, “Water Treatment Procedu re.”
b. Tilt kettle 90° t o a fu ll pour position .
c. Remove fill plug with open-en d wrench or
crescent wrench.
d. Open shutoff valve (turn handle 90° on
ball valve).
Use a funnel and add water to jacket.
e.
Check water level in jacket by tilting
f.
kettl e to operating position and vi ewing
water ga uge glass.
g. Repeat steps e a nd f until water lev el is
between t he maximum and mi nimu m
indication m arks on th e water gauge
glass.
h. Close shutoff valve, install fill plug, and
ret urn k ettle to opera ting position.
Follow procedure under “Jacket Va cuum” to
remove a ir from k ettle jacket.
* Date of manufacture stamped on National
Board dat a plate.
C Jacket Filling and Water Treatment (For
units manufactured after Feb. 6 1995) *
The jacket was charged at th e factory with
the proper am ount of treated water. Y ou
may need to r estore th e water to its proper
level, eit her because w ater w as lost as
steam du ring vent in g or beca use treated
water was lost by draining.
IMPORTANT
Pressure gauge must read 0 PSI or less
before you fill jacket wi th wat er.
To fill jacket with water:
a. If you are replacing water lost as steam,
use disti lled water . If you are replacing
tr eated water tha t ran out of the jacket,
prepare m ore trea ted w ater a s directed
in step 4, “Water Treatment Procedu re”.
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.
Continue to add water until the water
f.
level indicator glass is 3/4 full.
Close shutoff valve, an d install fill plug.
g.
Follo w procedur e in “Jack et Va cuum” to
remove a ir from k ettle jacket.
* Date of manufacture stamped on National
Board dat a plate.
14
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