FT-LF SERIES
FULLY JACKETED TILTING DIRECT STEAM KETTLE
INSTALLATION - OPERATION - MAINTENANCE
MODELS
FT-20LF
FT-30LF
FT-40LF
FT-60LF
44 Lakeside Avenue, Burlington, Vermont 05401 USA
Telephone: (802) 658-6600 Fax: (802) 864-0183
www.mi.com PN 14-0348 Rev A (9/14)
© 2014 - Market Forge Industries Inc.
Your Service Agency’s Address:
Model
Serial number
Oven installed by
Installation checked by
IMPORTANT
TABLE OF CONTENTS
WARNING: Improper installation, adjustment, alternation,
service or maintenance can
cause property damage, injury or death. Read the installation, operation and maintenance instructions thoroughly
before installing or servicing
this equipment.
FOR YOUR SAFETY
Do not store or use gasoline or
other ammable vapors or liquids in the vicinity of this or any
other appliance.
The information contained in this
manual is important for the proper installation, use, and maintenance of this oven. Adherence
to these procedures and instructions will result in satisfactory
baking results and long, trouble free service. Please read
this manual carefully and retain
it for future reference.
INSTALLATION
Introduction .............................................................. 2
Service Connections ..................................................... 3
Installation Instructions ................................................... 4
OPERATION
Operating & Cleaning Instructions ......................................... 5
ERRORS: Descriptive, typographic or pictorial errors are
subject to correction. Specications are subject to change
without notice.
Introduction
All FT-LF series direct connected steam jacketed kettles
are direct steam operated pressure vessels of a doublewall stainless steel construction forming a steam chamber
(jacket) enveloping of the kettle bowl surface. Kettle is tilt-
ing, oor mounted in xed positions on legs with adjustable anged feet. Kettle is equipped with a drain cock,
safety relief valve and a steam control valve. Options on
kettles include hinged spring assisted stainless steel lid
covering the kettle bowl opening and a sanitary stainless
steel tangent draw-off valve as an alternate method for
the removal of the food product from the kettle bowl.
CAPACITIES
• FT-20LF - 20 gallon (76 liter)
• FT-30LF - 30 gallon (114 liter)
• FT-40LF - 40 gallon (152 liter)
• FT-60LF - 60 gallon (227 liter)
FUNCTIONING MODE
Market Forge direct connected steam jacketed kettles
consist of a stainless steel bowl and a stainless steel
jacket which envelopes the lower surface of the bowl thus
forming a sealed pressure vessel (chamber) into which
steam is introduced by means of a manual control valve.
The kettle bowl is the container for the food product which
ideally should be of a liquid or semi-liquid consistency to
achieve complete contact with the bowl surface and thus
fully absorb the heat transmitted through the surface.
The temperature required for the cooking process to function adequately must be greater than the boiling point of
the liquid food product. Further, the greater the steam
pressure used, the higher the temperature and conse-
quently the quicker the cooking process. For example,
steam pressurized at 30 p.s.i. attains a temperature of
274 degrees Fahrenheit (135 degrees Celsius).
INSTALLATION
2
Service Connections
DIMENSIONS
MODEL A B C D E F G H (2”) H (3”) J (2”) J (3”) K L M
26
FT-20LF
FT-30LF
FT-40LF
FT-60LF
[660]
29.5
[749]
33
[840]
35.5
[902]
15.75
[400]
17.5
[445]
19.25
[489]
20.5
[521]
34.75
[883]
34.5
[876]
33.75
[857]
35
[889]
39.75
[1010]
43.25
[1100]
46.75
[1185]
49.25
[1251]
33.5
[850]
37
[940]
40.5
[1030]
43
[1092]
20.25
[514]
21.5
[546]
20
[508]
21
[533]
- 13
[330]
- 15.5
[394]
- 14.5
[368]
- 18
[457]
15.25
[387]
15.5
[394]
16.25
[413]
20.25
[514]
12.5
[318]
14.5
[368]
12.5
[318]
10.5
[267]
12
[305]
14
[356]
12
[305]
10
[254]
63
[1600]
65.63
[1667]
67.25
[1709]
71.88
[1826]
NONE 16.38
9.5
[241]
11
[279]
12.5
[318]
[416]
18.38
[467]
19.88
[505]
21.5
[546]
DIMENSIONS ARE IN INCHES [MM]
SAFETY RELIEF VALVE
STRAINER AND
STEAM TRAP
(OPTIONAL)
2” VALVE:
CLOSED 5.13 [130]
OPENED 6.88 [175]
3” VALVE:
CLOSED 7.88 [200]
OPENED 10.13 [257]
K
CR
JACKET
DRAIN VALVE
L L
45°
ØA
SPRING ASSISTED
COVER (OPTIONAL)
NOTE: 30, 40, & 60 GALLON
KETTLES ARE SUPPLIED WITH
2 REAR SUPPORT LEGS.
S
FLANGED FEET DETAIL
4 EQUALLY SPACED Ø7/16 [11]
HOLES ON 3 [76] B.C.
B
C
SERVICE CONNECTIONS
S Steam Supply - 3/4” IPS (19mm) at 5-35 PSI (0.3-
2.5 kg/cm2). Over 35 PSI (2.5 kg/cm2). Pressure
reducing valve is required if incoming pressure
exceeds jacket rating.
CR Condensate Return - 1/2” IPS (13mm)
FAUCET (OPTIONAL)
2” OR 3” TANGENT
DRAW-OFF VALVE
(OPTIONAL
S
F
J
E
D
H
G
M
Figure 1
3
INSTALLATION
Installation Instructions
1. Select a location to provide drainage for the kettle
pour path when tilted and for the draw-off valve if so
equipped.
2. Mark hole locations through anged adjustable feet.
Remove the kettle.
3. On hole locations marked, drill holes and insert expansion shields to accommodate 5/16” size lag bolts.
4. Reposition the kettle. Level the kettle by making nec-
essary adjustment on anged foot.
5. Bolt down kettle and seal with Silastic or other equivalent sealing compound. A sealant must be applied
not only to bolt heads but also around anges or pedestal base making contact with oor surface to full
NSF requirements.
6. Connect steam line (3/4” pipe size) to the kettle, making sure there is a steam control valve strainer fairly
convenient to the kettle.
7. Connect kettle condensate return line to a drain or to
a boiler return line. Each kettle return line must have
a suitable steam trap. Boiler return lines must have
a check valve.
8. The safety relief valve on the kettle must not be
plugged as it is set to relieve excess pressure in the
kettle.
9. If incoming steam pressure is greater than kettle maximum operation pressure then a pressure reducing
valve must be installed in the line.
10. If large amounts of water accumulate in the steam
line, it will be necessary to install one or more ball
oat traps in the line to eliminate the water.
11. A steam line pressure gauge is also recommended to
determine the actual amount of steam being supplied
to the kettle.
12. Check for proper operation.
INSTALLATION
4
Operating & Cleaning Instructions
OPERATING INSTRUCTIONS
1. If the kettle has draw-off valve, close it.
2. Fill the kettle with a product to desired level.
3. Slowly turn the steam control valve ON to full open
position (counterclockwise).
4. The kettle should boil two to three gallons of water
per minute. If it does not then incoming pressure and
piping should be checked to determine that it is ad-
equate to operate the kettle efciently.
5. Regulate steam control valve depending on type of
food being prepared.
6. When food is cooked, turn off steam, remove food
and clean the kettle immediately to prevent residue
from drying on the kettle bowl surface.
CLEANING
Your kettle should be cleaned immediately after each use.
1. Ensure that steam supply is OFF.
2. Pre-rinse inside of the kettle thoroughly and drain to
remove any food particles.
3. Using a nylon brush, clean the kettle with a mild detergent and warm water rinse. Never use steel wool
or scouring powder as it will scratch stainless steel.
4. Tilt the kettle fully or open the tangent draw-off valve
if one is provided to allow soap and water solution to
drain. Rinse with clean water.
5. On kettles equipped with a draw-off valve, turn the
large hex nut counterclockwise by hand until it is
completely disengaged from the thread. Grasp the
knob to valve and slowly pull out valve stem and disc.
Do not allow the disc to come in contact with hard
surfaces since damage to disc may occur and result
in valve leakage. Wash the valve stem, disc and handle. Insert nylon brush with detergent into interior of
valve body and tangent draw-off tube and brush vigorously. Replace valve stem assembly and engage
the hex nut fully by hand. Flush the kettle with clean
warm water. Leave the valve open when the kettle is
not in use.
CAUTION
Do not use cleaning agents that are corrosive.
Use of cleaning agents that contain chloride, acids or
salts are corrosive and may cause pitting and corrosion
when used over a period of time; this will reduce the life
of the appliance.
Pitting or corrosion is not covered by warranty.
Follow the recommended cleaning instructions. Use a
mild detergent, warm water and rinse thoroughly.
5
OPERATION
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