Market Forge FT-100GL Operators Manual

OWNER’S MANUAL

Tilting Self-Contained

Gas Steam Jacketed Kettles

MODELS:

• FT-20GL • FT-40GL • FT-60GL • FT-80GL • FT-100GL

An Employee Owned Company

35 Garvey Street ● Everett ● MA ● 02149-4403 Form No. S-1922A
Tel: [phone] ● Fax: [phone] (MA)
Toll Free: [phone] ● Outside MA Fax: [phone]
Customer Service: custserv@mi.com ● Visit Us At: www.mi.com

●

02/08

TABLE OF CONTENTS

INSTALLATION ...............................................................................1-2

OPERATION ...................................................................................3

MAINTENANCE ..............................................................................4

TROUBLE-SHOOTING ..................................................................5

ILLUSTRA

WIRING ...........................................................................................13-14

TED PARTS LIST ...........................................................5-12

i

INSTALLATION

Uncrate carefully. Report any hidden freight damage to
the freight company immediately.

Set unit in place. Be certain to maintain the following
minimum clearances to combustible construction. Side

“0” inches, back “4” inches at ue box. Level the unit

using a spirit level in all directions on the top of the ket­tle (lid up). Adjust the bottom foot on each leg to over-

come an uneven oor. Be certain to leave adequate

clearances for cleaning, maintenance and service. If

unit is also equipped with an optional water ll valve
it too must be connected with a exible water supply
tube, quick disconnect and strain relief.

Appliance location should have an exhaust system
provided directly above the appliance to exhaust
combustion generated by the gas burner. For use on
noncombustible oors. Minimum clearance from com­bustible and noncombustible constructions, sides “0”

inches, back “4” inches at ue box.

Clearance must be adequate in aisle and at the side
and back. Adequate clearances for air openings into

combustion chamber must be provided, as well as for
serviceability. All units must be installed in such a man-

ner that the ow of combustion and ventilation are not
obstructed. Provisions for an adequate air supply must

also be provided. Do not obstruct the lower front or left
side of the unit, as combustive air enters through these
areas.

DESCRIPTION: The kettle has double-wall construc­tion of 300 series stainless steel forming a steam jacket
around the lower 2/3 of the kettle. The jacket enclosure
contains factory sealed water and antifreeze. The kettle
exterior is fully insulated. The bottom of the kettle is a
hemispherical design for superior heat circulation. The
recessed control panel is located on the front right side
of the unit in full view of the operator. Standard controls
include direct immersion thermostat, water sight glass,
cooking light, pressure gauge and electronic ignition
with ignition indicator light. Safety features include low
water cutoff with indicator light, pressure switch, pres­sure relief valve and a 100% safety gas shut off valve.

The kettle pivots on trunnions connected to the gear
and control consoles. The worm and gear tilting mech­anism allows the kettle to tilt forward to a full 90° for
complete draining. The tilt mechanism is self locking
for positive stop action. The consoles are drip proof,
stainless steel clad and are supported on all welded 1
5/8” (41mm) diameter stainless steel legs with anged
feet.

kettle is A.S.M.E. code stamped for operation to 50
PSI. Temperature range from 150° F to 285° F.
 120 VAC, 1pH, 50/60 Hz

OPTIONAL AT EXTRA COST:

 Spring assist cover, HSC
 2” tangent draw off, FDOR-2
 3” tangent draw off, FDOR-3
 Tri-Basket assembly
 Single pantry faucet with swing spout, SP-12
 Double pantry faucet with swing spout, DP-12
 Graduated measuring strip, MS-1
 Perforated strainer
 Solid disk strainer DOS-2
 316 stainless steel liner for high acid content

SERVICE CONNECTIONS: GAS INSTALLATION TO

CONFORM TO LOCAL CODES OR IN THE ABSENCE OF
LOCAL CODES TO NATIONAL FUEL GAS’ CODE - ANSI
Z223.l.- LATEST EDITION IN CANADA INSTALLATION IN
ACCORDANCE WITH CAN/CGA-B149.1 OR 0.2 OR CUR-

RENT CODE

The appliance and it’s individual shut-off valve

1.

.

must be disconnected from the gas supply piping
system during any pressure testing of that sys­tem at .test pressures in excess of 1/2 PSI (0.1

kg/cm2).

The appliance must be isolated from’ the gas sup-

2.
ply piping system by closing it’s individual manual
shut-off valve during any pressure testing of the

gas supply piping system at test pressures equal

to or less than 1/2 PSI (0.1 kg/cm2).

ELECTRICAL GROUNDING MUST BE PROVIDED IN AC­CORDANCE WITH LOCAL CODES, OR IN THE ABSENCE
OF LOCAL CODES, WITH THE NATIONAL ELECTRIC
CODE, ANSI/NFPA 70 - LATEST EDITION’ IN CANADA
INSTALLATION IN ACCORDANCE WITH C.S.A. C22.1 CA­NADIAN ELECTRIC CODE PART 1.

WARNING: ELECTRICAL GROUNDING INSTRUCTIONS
UNITS EQUIPPED WITH A THREE-PRONG (GROUND­ING) PLUG FOR YOUR PROTECTION AGAINST SHOCK
HAZARD AND SHOULD BE PLUGGED DIRECTLY INTO A
PROPERLY GROUNDED THREE-PRONG RECEPTACLE.
DO NOT CUT OR REMOVE THE GROUNDING PRONG

FROM THIS PLUG. (120 VOLT UNITS ONLY).

Units with these electrical rating are factory equipped

with a transformer.. To connect supply wire remove
top right cover and route supply wires and ground wire
through the hole in the back of console with strain relief

tting supplied. Connect wires to terminal block and

ground lug. Replace cover.

OPERATION SHALL BE BY: Natural or L.P. gas utiliz-

ing a high efciency power burner system. The steam

Wiring diagram for unit is located in side panel of the
left hand console facing the front of the unit..

1

INSTALLATION

26�

660mm

35�

889mm

G

Optional Spring

Assist Cover

G

E

36 1/4�

921mm

H

D

EC

29�

736mm

6�

152mm

F

Optional Faucet

C

EC

6 1/4�

159mm

3 1/8�

79mm

10 1/4�

260mm

B

G

A

5 1/8�

130mm

Wall

4 Min.

102mm

J

K

M

L

OPERATION

IMPORTANT NOTE: Unit is shipped with gas combi-
nation valve turned “ON”

OPEN MANUAL GAS SHUT OFF VALVE.

1.
WITH THERMOSTAT SET AT OFF.

2.
TURN POWER SWITCH ON.

3.
SET THERMOSTAT TO MAXIMUM, INITIATING

4.
A 30 SECOND PRE-PURGE.

NOTE: If after 36 seconds the burner fails to ig-
nite or burner lights then goes out the system goes
into safety lockout; de-energize the system by set­ting the thermostat to OFF for 5 minutes and try
again.

SET THERMOSTAT TO DESIRED TEMPERA-

5.
TURE SETTING.

DAILY SHUTDOWN

TURN POWER SWITCH OFF.

1.
TURN THERMOSTAT OFF.

2.

THERMOSTAT - The thermostat selects are de-

4.

sired internal kettle operating temperatures.

PRESSURE GAUGE - The pressure gauge indi-

5.

cates that internal operating pressure of the ket­tle. When cold, the gauge should indicate 25 to
30 inches mercury column vacuum. If it does not,
refer to “Re-establishing Vacuum” above this sec­tion. Under normal operation with the kettle empty
(thermostat set at 285oF) the pressure shall reach
38 PSI. When loaded the pressure may be consid­erably less.

SIGHT GLASS - The sight glass indicates the min-

6.

imum and maximum water level within the kettle.
If water level falls below minimum level more dis­tilled water should be added. See “Adding Water”
section.

PRESSURE RELIEF VALVE - A safety device

7.

which prevents the internal kettle pressure from
ever exceeding 50 PSI. If should never be tam­pered with.

LOW WATER LIGHT COMES ON - ADD WATER

COMPLETE SHUTDOWN

TURN POWER SWITCH OFF.

1.
TURN THERMOSTAT OFF.

2.
TURN POWER SUPPLY TO UNIT OFF.

3.
REMOVE FRONT ACCESS PANEL ON LEFT

4.
SIDE AND TURN DIAL ON COMBINATION VALVE
TO OFF.

CLOSE MANUAL GAS SHUT OFF VALVE.

5.

FRONT PANEL CONTROLS

POWER SWITCH - This switch turns the main

1.

power to the unit on and off. If must be turned on to
heat the kettle. It should be turned of when kettle
will not be in use for long periods of time.

(RED) COOKING LIGHT - This light is on when-

2.

ever the main burner gas is on.

(AMBER) LOW WATER LIGHT - All kettles are

3.

supplied with sufcient distilled water in pressur­ized jacket. If at any time the water level falls be-

low that required for proper operation, the kettle

will not heat and this light will come on. See “Add­ing Water” Section.

Unit should be completely cold and off.

1.
Lift handle of pressure relief valve to release vac-

2.
uum in kettle.

Remove relief valve and attach a 3/4” NPT elbow

3.
pointing upward.

Using pure distilled water only, pour the water into

4.
the open end of the elbow (a funnel will be helpful).
Water will enter kettle slowly, as air must escape
through the same hole. Water should be added un­til water level is at the sight glass half way between
the minimum and maximum levels.

When sufcient water has been added, remove

5.
elbow and replace pressure relief for steam at 50
PSI.

Vacuum must be re-established.

6.

The total amount of distilled water in each kettle is:

FT-20GL - 6 Gallons of water

•
FT-30GL - 9 Gallons of water

•
FT-40GL - 9 Gallons of water

•
FT-60GL - 12 Gallons of water

•

3

MAINTENANCE

PERIODIC MAINTENANCE

NOTICE: As a safety precaution, disconnect the power
supply during cleaning or servicing.

CLEANING
For easier cleaning add cold water to the kettle imme­diately after removing contents and let soak.

Wash exposed cleanable areas daily. To remove nor­mal dirt, grease or product residue from stainless steel,
use ordinary soap and water applied with a sponge
or cloth. Dry thoroughly with a clean cloth. Never use
vinegar or any corrosion cleaner. Never, use ordinary
steel wool, wire brush or steel scouring pads. Never
use cleaning solvents with a hydrocarbon base on
control panel. Blower wheel inlet screen and motor air
vent should be cleansed if an accumulation of dust or
lint is obvious.

At least twice a year the unit venting system should be
examined and cleaned. At least twice a year have an
authorized Service Person clean and adjust the unit for
maximum performance.

RE-ESTABLISHING VACUUM

With the kettle completely cold a vacuum of 25 to 30
inches mercury column should be maintained as in­dicated by the pressure gauge on the front control
panel. If at any time the vacuum is less than 25 inches
M.C. the vacuum should be re-established. With the
kettle empty turn the thermostat knob to the highest
temperature. When the pressure gauge reaches 2.0
PSI turn thermostat off, open the pressure relief valve
until manometer reads 1 PSI then sharply release it.
This should remove the air and any loss in perfor­mance should return. Should the kettle fail to maintain
a vacuum after repeated attempts to establish it further
checks should be made to see if the pressure relief
valve is leaking or if there are any leaks in the pressure
relief valve piping, copper lines going to the pressure

switch, pressure gauge or thermostat tting.

ADJUSTMENTS
THERMOSTAT: The thermostat adjustment should not

be changed. Check the following before changing the
thermostat.

With kettle cold, the pressure on the pressure

1.
gauge should read 25 to 30 inches mercury col­umn vacuum. If not, see “Re-establishing Vacuum”
above.

The pressure switch is .not set too high or too

2.
low and causing the out of adjustment condition.
A voltmeter should be used by a properly trained
servicemen to determine if the pressure switch or
thermostat is actually cycling the burners. If the

pressure switch is found to be the problem. See
“Pressure Switch” below.

PRESSURE SWITCH: The pressure switch should not
be adjusted until it is determined to be the cause of an

operating pressure difculty. See “thermostat” section
to determine if the source of difculty is the pressure
switch or thermostat, The major difculties caused by

pressure switch miss-adjustment are:

Pressure relief valve opening, especially on pre-

1.
heat from a cold start to 285oF (pressure switch
set too high).

Pressure in kettle is to low and burners are being

2.
shut down by pressure switch (not thermostat).

The pressure switch is preset for proper operation
from the factory. It is adjusted to the maximum pres­sure which will prevent the pressure relief valve from
opening. This setting will be slightly different on dif­ferent kettles due to variations in the pressure relief
valves. During preheat to the maximum thermostat
setting (285oF), from either a cold condition or a lower
temperature setting, the temperature may overshoot
the thermostat setting and be shut down by the pres­sure switch. This is normal, however, after the kettle
has cycled several times (empty) the thermostat will
begin cycling the unit. .

TO ADJUST PRESSURE SWITCH:

With the kettle empty and completely cold, turn

1.
kettle on and set thermostat to maximum setting
(285oF).

Pressure in kettle (read pressure gauge on front

2.
panel) should reach a maximum pressure of 40
PSI and pressure relief valve should not open.
Kettle pressure may rise 3 or 4 PSI even afterburn­ers shut down.

Relief valve should not open when kettle pressure

3.
is 40 PSI pressure switch setting is satisfactory.

If relief valve opens, reduce setting on pressure

4.
switch, cool kettle completely by running cold wa­ter through it and repeat this procedure.

If pressure in kettle is below 40 psi increase set-

5.
ting of pressure switch, cool kettle completely by
running cold water through it and repeat this pro­cedure.

To obtain access to the pressure switch the front

6.
panel must be removed. Remove the screws on
either side of the panel. Be sure to support the
panel to avoid excessive strain on the wiring.

To increase the pressure switch setting turn the

7.
white ribbed knob clockwise; to decrease turn it
counterclockwise. Use the centre of the black ring
as an indicator.

4