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ST-24M SERIES
12 PAN PRESSURELESS STEAM COOKERS
PARTS AND SERVICE MANUAL
EFFECTIVE FEBRUARY 22, 2016
The Company reserves the right to make substitution in the event that items specied are not available.
ERRORS: Descriptive and/or typographic errors are subject to correction.
Superseding All Previous Parts Lists.
MARKET FORGE
Telephone: (802) 658-6600 Fax: (802) 860-3732
www.marketforge.com
P/N 14-0290 Rev B (2/16)
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TABLE OF CONTENTS
PRINCIPLES OF OPERATION ..........................................................3
TROUBLESHOOTING ..................................................................5
WIRING DIAGRAMS ...................................................................9
REPAIR AND REPLACEMENT ........................................................ 12
ILLUSTRATED PART LIST
CONTROL PANEL ASSEMBLY ........................................................ 13
CABINET ASSEMBLY ................................................................ 14
DOOR ASSEMBLY ................................................................... 16
DOOR LATCH AND HANDLE ......................................................... 17
CONDENSER ASSEMBLY ............................................................ 18
FEBRUARY 22, 2016 2 ST-24M SERIES CONVECTION STEAMERS
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PRINCIPLES OF OPERATION
GENERAL
The ST-24 Pressureless Steam Cooker consists of two
identical cooking compartments, one above the other, in
a single cabinet assembly. Each compartment is tted
with independent electrically controlled steam circuits and
spring-loaded, self-sealing doors with slam action latches.
Compartments can be used separately or simultaneously
for either constant steam or 60-minute timing. The principles of operation in this section include an explanation
of steam, steam condensing, and electrical circuits and
their functioning.
PLUMBING CIRCUITS
The plumbing circuits consist of the piping, steam solenoid valves, orice, drain, and cold water condenser required to provide controlled steam application to the cook-
ing compartments. A simplied diagram of these circuits
is shown in below
NOTE: Figure 1 is strictly a pictorial schematic diagram
and is not intended to show the actual conguration of the plumbing. All components are shown
in correct relationship with each other. However,
the diagram does not show their actual locations
or position within the cooker.
As shown in the diagram, steam inlet and exhaust connections are connected at the factory directly into a steam
boiler or direct-connected steam plumbing enclosed
within the base cabinet on which the cooker is mounted.
The boiler (or direct-connected steam control system) is
equipped to supply constant, regulated steam at 14–15
PSI. Steam exhaust, having been reduced to water by the
cold water condenser, is directed into the boiler (or directconnected steam control) drain system.
Steam inlet lines for compartments are equipped with
normally closed solenoid valves operated by the electrical control circuits. The inlet valves are opened whenever
the compartment control circuit is activated by use of the
60-minute timers.
STEAM INLET LINE
A steam supply line is plumbed from the boiler output (or
direct-connected steam control) to a 1/2-inch barb tting
connected to the input sides of both steam inlet solenoid
valves. When a cooking compartment is not in use, the
valve for the compartment remains closed to prevent
steam from entering. During operation, the appropriate
inlet solenoid valve is opened by activation of the control circuit. Steam is projected onto the surface of pans
of food loaded into the compartment by an orice located
inside the compartment. Steam continues to ow through
the compartment in this manner until the control circuit
closes the solenoid valve.
Figure 1
FEBRUARY 22, 2016 3 ST-24M SERIES CONVECTION STEAMERS
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PRINCIPLES OF OPERATION
STEAM EXHAUST AND DRAIN LINES
Perforated strainers at the drain line openings inside each
compartment allow only steam, condensation, and liquid
cooking drainage to enter. Prior to discharge into the boiler drain system, steam is converted to water by the cold
water condensing systems for each compartment.
STEAM EXHAUST CONDENSING SYSTEM
The steam condensing system consists of the identical,
two-position, normally closed cold water solenoid valves,
with outlet sides connected into the exhaust plumbing for
each cooking compartment. A spray nozzle directs cold
water about the inside of the drain lines to increase cold
water contact with exhausted steam. Valve inlet sides
are connected remote from the supply line of the steam
boiler (or direct-connected steam plumbing). The valves
respond to a thermostatic switch located inside the compartment. When the timer starts the cold water solenoids
will energize.
ELECTRICAL CIRCUITS
The electrical circuits of the cooker control the power to
activate timer motors and energize solenoid-operated
valves and circuits, which in turn control application of
steam to the cooking compartment and condensation
of steam from the exhaust line. The cooker operates on
120V, 2 amp, 60Hz electrical service connected to all circuits from the circuits of the steam boiler (or direct-connected steam controls) contained within the cabinet on
which the cooker is mounted. Power is supplied to the
control circuit at all times when the shut-off device (Circuit
Breaker) for the unit (installed by a certied Electrician) is
in the ON position.
Control Circuit Components
A brief description of the electrical circuit elements follows.
60 Minute Timer/Constant Steam
The timer contains a 120-volt AC synchronous motor that
drives a timing dial through a gear reduction and clutch
mechanism. The timer dial is manually set for any interval
of operation from 0 to 60 minutes or constant steam as
read on the calibrated dial face. The manual rotation of
the dial moves the common element (1) of the timer switch
from the neutral (OFF) position to contact (3), which connects with the steam inlet solenoid valve operating circuit.
The cooker is placed into automatic operation with the
setting of the timer dial. Its timing cycle, however, is automatically delayed by a thermostatic switch, which assures
operating temperature is achieved before the timer motor
begins to “time out.” When the timer motor has operated
for the preset duration, the common element is transferred to contact (4), returning the inlet solenoid valve to
the closed position and energizing the buzzer. Contact to
the buzzer circuit remains closed until the dial is manually turned to the OFF position, returning the common element (1) of the timer switch to the neutral position.
Indicator Lights
An indicator light is included for both compartments. The
light remains on (red) at all times when the coinciding timer dial is set and the door interlock switch is closed. The
light turns off at the end of the timed cooking duration or
when the set time has elapsed.
Buzzer
The buzzer is an alarm device that operates by oscillation
of a striker against the core of an electromagnet. When
the 60-minute timer dials reach the “0-Minute” position,
the buzzer coil is energized to sound the buzzer. Movement of the timer dial to the OFF position opens the contact to the buzzer coil to shut it off.
Door Interlock Switch
The interlock switch is a single-pole proximity switch with
normally open contacts. The switch is operated by the
proximity of a magnet within the door. When the door is
open, the switch contacts remain in the open position.
When the door is closed and securely latched in place,
the magnet is near the switch to close the contacts.
Connected between the operating contact (3) of the timers and the steam inlet solenoid valve, the door switch
acts as a protective device to interrupt valve operation
unless the door is closed.
Thermostatic Switch
The thermostatically operated switch is a two-position,
normally open switch mounted on the cooking compartment. The switch functions to activate the cold water solenoid valves of the steam condensing system and to delay
timer motor operation until the compartment temperature
reaches 195°F, thus assuring that cooking temperature
exists throughout the timed duration.
Digital Timers (Optional)
The timer controls the steam to the cavity by either a con-
stant steam setting or a used dened timer that will be
programmed by the user into the timer
FEBRUARY 22, 2016 4 ST-24M SERIES CONVECTION STEAMERS
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TROUBLESHOOTING
TROUBLE-SHOOTING GUIDE
A trouble-shooting guide for use by service personnel is
given in the table below.
ELECTRICAL FAULT ISOLATION
Correction of an electrical failure rst requires isolation of
the fault to a single circuit or component. In most cases,
the nature of the failure and its effect upon the operation
of the cooker will be sufcient to narrow it down to one or
more circuit elements. The Electrical Fault Isolation table
is provided as a guide for isolating electrical faults.
ELECTRICAL TROUBLE-SHOOTING PROCEDURES
Before performing the trouble-shooting procedures in this
section, the serviceman must be familiar with the function
of all controls as described in the Operation section as
well as with the Principles of Operation.
ELECTRICAL FAULT ISOLATION GUIDE
FAILURE FAULT LOCATION
1. Will not operate in either CONSTANT STEAM or 60-MINUTE TIMER positions.
2. Operating in CONSTANT STEAM position but not in 60-MINUTE TIMER
position.
3. Operates in 60-MINUTE TIMER position but not in CONSTANT STEAM
position.
4. Steam solenoid valve fails to open with indicator light on. a. Solenoid valve coil
5. Indicator light off when steam solenoid valve open. a. Indicator light
6. With indicator light on and steam solenoid valve open, timer dial fails to
turn.
7. Buzzer fails to sound at end of 60-MINUTE TIMER mode. a. 60-Minute timer contacts
8. Steam ows continuously from boiler drain line. a. Thermostatic switch
The electrical trouble-shooting procedures that follow require access to components and terminals of the electrical control panel. Electrical controls are reached by removing screws that fasten the control panel to the frame.
The panel may be pulled forward for testing while interconnected to the cooker circuits or disconnected at the
pin connection for complete removal and repair.
INCOMING POWER
Before trouble-shooting any of the electrical parts or assemblies, verify that power is being supplied to the cooker. Incoming power is connected at the boiler (or directconnected steam) control box located in the base cabinet.
With power connected to the cooker, an AC voltmeter is
used to measure 120 volts across L1 and L2. If 120 volts
is present, and the cooker will not operate, the fault lies
within the electrical circuits of the cooker.
a. Incoming power
b. Timer
c. Door interlock switch
d. Wiring
a. 60-minute timer
b. Wiring
a. Timer
b. Wiring
b. Wiring
b. Wiring
a. Compartment thermostatic switch
b. Constant steam position
c. Timer motor
d. Wiring
b. Buzzer
c. Wiring
b. Cold water solenoid valve
c. Wiring
FEBRUARY 22, 2016 5 ST-24M SERIES CONVECTION STEAMERS
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TROUBLESHOOTING
ELECTRICAL INSPECTION
The rst step in any electrical trouble-shooting procedure
is a thorough physical inspection of all wiring connections.
To access electrical components, remove the control panel as explained in Exterior Panel Removal.
WARNING
Before removing control panel or checking
connections and wiring, be sure that the circuit breaker for incoming power is OFF. When
power is supplied, all exposed terminals of the
control panel carry 120 volts.
Check all wiring connections by hand to assure that both
ends of all connection points are tightly secured. Use a
screwdriver to tighten connection points. If necessary, visually inspect all quick-disconnect terminals for evidence
of corrosion. Terminals in this condition should be separated, cleaned with emery cloth until shiny, and tightly reconnected.
60 MINUTE TIMER
Timer Contacts
Defective timer contacts will result in failure of either cooker compartment to operate. When this occurs, remove the
control panel (see Exterior Panel Removal), and proceed
as follows:
1. Turn off power to the cooker at external circuit breaker.
2. Disconnect all ve wires from timer terminals
3. Connect an ohmmeter between terminals 1 and 3.
To conrm timer motor condition, proceed as follows:
1. Carefully check motor wire leads and tighten loose
connections.
WARNING
Use care while working with control panel.
Terminals carry 120 volts.
2. Turn on power to the cooker.
3. Set timer dial (any setting beyond “0-Minute”). If operation is correct, the motor will turn the dial toward
“0-Minute.” If the motor fails to operate, it is defective
and the entire timer must be replaced.
4. Shut off power to the cooker.
DOOR INTERLOCK SWITCH
Malfunction of the cooker door interlock switch prevents
timer indicator lights from turning on and steam solenoid
from opening when the timer dial is set. If steam does not
enter the compartment and the indicator light fails to turn
on with the door latch securely engaged, the fault may be
in the door interlock switch. Proceed as follows:
1. Turn off power to the cooker.
2. Disconnect wires to the door switch terminals.
3. Connect an ohmmeter between the terminals of the
switch.
4. Actuate the switch by closing the cooking compartment door. If a zero reading cannot be obtained, the
switch is defective and must be replaced.
4. Rotate timer dial beyond the “0-Minute” point (any
setting) to obtain a reading of zero ohms on the
ohmmeter. If zero ohm reading cannot be obtained,
timer contacts are defective and the timer must be
replaced.
5. Move ohmmeter leads to terminals 1 and 4.
6. Rotate timer dial to “0-Minute” position (an audible
click indicates correct position). If zero ohm reading
cannot be obtained, the timer is defective and must
be replaced.
7. Remove ohmmeter and replace all ve leads on timer
terminals.
Timer Motor
A defective timer motor will cause continuous operation in
the TIME mode, with the timer dial failing to return to the
“0-Minute” position. Since thermostatic switch failure can
cause the same symptom, fault must rst be isolated to
the timer by testing the thermostat.
FEBRUARY 22, 2016 6 ST-24M SERIES CONVECTION STEAMERS
5. Remove the ohmmeter and replace the leads on
switch terminals.
STEAM SOLENOID VALVES
When either inlet solenoid valve fails to operate, the fault
may be a defective coil. A defective coil is found using an
AC volt-meter to check the voltage at the coil wire terminals, with the cooker compartment operating in either
CONSTANT STEAM or 60-MINUTE TIMER mode. If voltage of 120 volts is present and the coil fails to open the
valves, the fault is in the valve coil. Defective valve coils
are not separately replaceable, requiring complete valve
replacement.
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TROUBLESHOOTING
INDICATOR LIGHTS
If the cooker compartment functions correctly, with the
single exception that the indicator light fails to light during
operation, the fault is a defective indicator light. A “burned
out” or defective light is veried by using an AC volt-meter
at the leads, with input power on the selector switch in the
correct position for that timer, the timer set, and the door
latches closed. If 120 volts is present, the fault is in the
indicator light and requires replacement. If 120 volts is not
present, the fault is in the wiring or control components
(selector switch, timer, or door switch).
COOKING COMPARTMENT THERMOSTATIC SWITCH
A thermostatic switch included in the circuit for the timer
motor delays timer operation until steam owing into the
compartment satises the temperature-actuated switch
device. If a timer motor fails to operate within about one
minute after the indicator light comes on (with cooker
compartment empty), the cause may be a defective thermostatic switch. To test the switch, proceed as follows:
1. Disconnect the two wires connected to the thermostatic switch terminals.
2. Connect an ohmmeter between the two terminals of
the switch.
3. Place the cooker into operation and observe ohmmeter dial. Within one minute of operation, the switch
contacts close automatically to register a zero ohm
reading on the dial. If a zero ohm reading is not obtained, the switch is defective.
4. Shut off cooker, disconnect ohmmeter leads, and replace wires on switch terminals.
BUZZER
If the buzzer does not sound at the termination of the operator-selected timer setting (timer dial returned to “0-Minute” position), the fault may be a defective buzzer. Buzzer
operation is veried using an AC volt-meter at buzzer coil
connections with input power on and selector switch and
coinciding timer dial set at the “0-Minute” position. If voltage is 120 volts, the fault is in the buzzer, which must be
replaced. If 120 volts is not present, the fault is in the wiring or control components (timer or selector switch).
COLD WATER CONDENSER CIRCUIT
If during cooker operation steam exits from the drain
line opening (located in lower boiler compartment) and
the condensing system fails to operate, as evidenced
by repeated discharge of water from the drain line, the
condensing circuit is malfunctioning. The failure can be
caused by a defective condenser thermostat or cold water solenoid coil, or by wiring failure. To test condenser
thermostat, refer to Cooking Compartment Thermostatic
Switch.
If the condenser thermostat functions correctly, but either of the cold water solenoid valves fails to operate, the
cause might be a faulty valve coil. A defective coil is found
using an AC volt-meter to check the voltage at the coil
wire terminals with the cooker compartment in operation.
If voltage of 120 volts is present and the valve fails to
open, the fault is in the valve coil. Defective valve coils are
separately replaceable.
WIRING
All of the electrical components of the cooker (timers, indicator lights, etc.) are connected to each other by wiring.
If all of the electrical components are operating correctly (and the incoming power has been checked), but the
cooker fails to operate, the fault lies in the wiring.
The Wiring Diagrams in this manual show all terminals
and interconnections within the electrical circuits. All num-
bered terminals are identied and all leads number coded
as shown. Connections can be easily removed.
The Schematics show the same information schematically and is an aid in isolating circuits for testing. Using
an ohmmeter, wiring continuity between the connections
shown on the wiring diagram is readily veried. This is
best done in stages, removing only those wires required
for each continuity check. As each lead is replaced, it
should be checked for evidence of corrosion, and cleaned
if necessary. All leads must be tightly attached so as to
provide a good electrical connection.
FEBRUARY 22, 2016 7 ST-24M SERIES CONVECTION STEAMERS
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GENERAL TROUBLESHOOTING GUIDE
PROBLEM PROBABLE CAUSE(S) REMEDY
1. Indicator light fails to light with timer
set.
2. Steam fails to enter cooking compartment with indicator light on.
3. Steam enters compartment continuously. Timer dial not turning.
4. Steam continues to ow into compart-
ment and/or buzzer fails to sound at
end of timer setting.
5. Steam ows continuously from boiler
(or direct connected steam control)
drain line with cooker in operation.
TROUBLESHOOTING
a. Power to cooker off. a. Locate external circuit breaker for
incoming power and place in ON
position.
b. Door interlock switch contacts
not closed.
c. Door interlock switch faulty. c. Replace switch. See Door Interlock
d. Indicator light burned out. d. Replace light.
e. Faulty timer contacts. e. Replace timer. See 60-Minute Tim-
f. Faulty wiring. f. Inspect condition of wire and tight-
a. Faulty steam solenoid valve. a. Replace valve. See Steam Solenoid
b. Faulty wiring. b. Inspect condition of wire and tight-
a. Constant steam position. a. Move knob to timing location.
b. Faulty thermostatic switch. b. Replace switch. See Cooking Com-
c. Faulty timer motor. c. Replace timer. See 60-Minute Tim-
d. Faulty steam solenoid valve. d. Replace valve. See Steam Solenoid
e. Faulty wiring. e. Inspect condition of wire and tight-
a. Timer contacts faulty. a. Replace timer. See 60-minute timer.
b. Buzzer faulty. b. Replace buzzer. See Buzzer.
c. Faulty wiring. c. Inspect condition of wire and tight-
a. Cold water not connected. a. Turn on external shut-off valve.
b. Faulty thermostat. b. Replace thermostat. See Cooking
c. Faulty cold water solenoid. c. Replace valve.
d. Faulty wiring. d. Inspect condition of wire and tight-
b. Shut cooker door to close switch
contacts. Check alignment of door
with switch.
Switch.
er.
ness of all connections. Correct as
needed.
Valves.
ness of all connections. Correct as
needed.
partment Thermostatic Switch.
er.
Valves.
ness of all connections. Correct as
needed.
ness of all connections. Correct as
needed.
Compartment Thermostatic Switch.
ness of all connections. Correct as
needed.
FEBRUARY 22, 2016 8 ST-24M SERIES CONVECTION STEAMERS
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WIRING DIAGRAMS
MECHANICAL CONTROLS
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WIRING DIAGRAMS
DIGITAL CONTROLS
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WIRING DIAGRAMS
LADDER DIAGRAM
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REPAIR AND REPLACEMENT
CAUTION
UNDER NO CIRCUMSTANCES SHOULD
HARDWARE (OR PARTS) BE REPLACED
WITH A DIFFERENT LENGTH, SIZE, OR TYPE
OTHER THAN AS SPECIFIED IN THE PARTS
LIST. THE HARDWARE USED IN THE COOKER
HAS BEEN SELECTED OR DESIGNED SPECIFICALLY FOR ITS APPLICATION, AND THE
USE OF OTHER HARDWARE MAY DAMAGE
THE EQUIPMENT AND WILL VOID ANY WARRANTY.
Door Latch Tension Adjustment
CAUTION
SHUT OFF MAIN ELECTRICAL POWER TO
UNIT!
Procedure:
1. Open the cooking compartment door.
2. Remove the control panel by removing the eight
mounting screws and disconnecting the wire plug and
restraining wire.
3. Tighten both nuts down until the springs are fully
compressed.
4. Back each nut off 1/2 turn.
5. Remount the control panel, reconnecting wire plug
and restraining wire.
Door Handle Tension Adjustment
Procedure:
1. Open the cooking compartment door.
2. Remove the six screws and washers from the top
edge and bottom edge of the door.
3. Remove the inner door gasket mounting plate assembly from the outer door. Do not disassemble these
three components—remove them as an assembly.
4. Tighten both nuts down until the springs on the outer
door are fully compressed.
5. Back each nut off 1/2 turn.
6. Remount the inner door gasket mounting plate assembly by assembling the six screws and washers.
Door Gasket Replacement
The cooking compartment door gaskets are made of a
silicone-type rubber material that is very durable but subject to wear during normal operation. Should the gasket
leak, readjust the door gasket to the unit or replace it.
Procedure - Replace Gasket:
1. Open the cooking compartment door.
2. Remove the six screws on the outside of the door,
and remove the inner door assembly.
3. Remove the eight nuts from the door gasket mounting plate on the inside of the inner door assembly.
4. Remove the door gasket mounting plate and the door
gasket.
5. Install the new door gasket to the mounting plate.
6. Reassemble the mounting plate with gasket to the inside of the inner door assembly using the eight nuts.
7. Reassemble the inner door assembly using the six
screws on the outside of the door.
NOTE: Remember that the lip on the door gasket mount-
ing plate must t into the channel on the inside
edge of the gasket to insure a proper seal.
Procedure - To Adjust Gasket to Unit:
To prevent steam leaks around the door, adjust the gasket
tension to cavity. Adjust the gasket by loosening the six
screws on top and bottom of door, move inner door plate
in or out, left side or right side, and tighten the six screws.
Exterior Panel Removal
WARNING
To prevent hazard in servicing the cooker, be
certain that the steam supply boiler is shut
down, the cold water shut-off valve is closed,
and the electrical disconnect circuit breaker
for the cooker/boiler unit is off before removing side panels.
Access to all internal plumbing and electrical assemblies
is from the right side and right front. The left-side panel is
removed by removing the bottom screw and pushing up
on the panel until the lower lip disengages the frame. The
electric control panel may also be removed as a unit by
removing screws and pulling the panel forward. Removal
of the control panel is completed by unplugging interconnecting wiring at the pin housing.
Steam and Water Solenoid Valve Replacement
Replacements for the 1/2-inch steam solenoid valves and
the 1/4-inch water valves are available as complete units
from Market Forge Authorized Service Agencies. It is necessary to replace an entire steam valve when the coil is
faulty or the diaphragm ruptures. Replacement coils are
available for the water valves. The valves are accessed
as explained in Exterior Panel Removal shown above.
FEBRUARY 22, 2016 12 ST-24M SERIES CONVECTION STEAMERS
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CONTROL PANEL ASSEMBLY
ITEM PART NO. DESCRIPTION QTY
1 98-1616 CONTROL PANEL 1
2 98-1612 LEXAN, CONTROL PANEL 1
3 08-6464 60-MINUTE TIMER 2
4 08-6541 TERMINAL STRIP 2
5 91-6471 BRACKET, TERMINAL STRIP 2
6 10-7395 BUZZER 2
7 08-3826 KNOB, TIMER 2
8 10-5052 LIGHT, RED 2
FEBRUARY 22, 2016 13 ST-24M SERIES CONVECTION STEAMERS
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CABINET ASSEMBLY
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CABINET ASSEMBLY
ITEM PART NO. DESCRIPTION QTY
1 08-6308 REED SWITCH 2
2 08-4912 ASSEMBLY, PLUMBING DRAIN 2
3 10-2793 REAR POST 2
4 98-1643 COUPLER, 1/2” NPT X 5/8” ID BARB 4
5 08-6538 ELBOW, 90O, 1/2“ IPS 4
6 98-1643 BRACKET, REAR FRAME SUPPORT 1
7 08-6538 CHECK VALVE, 3/8 OD BLACK 2
8 91-6491 GROMMET, SILICONE RED 2
9 91-7639 BRACKET, CAVITY SUPPORT 1
10 91-7318 WELD ASSEMBLY, TOP 1
11 10-9174 RELAY, TUBE 4
12 10-9175 RELAY, BASE 4
13 91-6940 BRACKET, RELAY 2
14 91-6475 HINGE, ASSEMBLY TOP 2
15 91-6476 HINGE, ASSEMBLY BOTTOM 2
16 91-7334 TROUGH, DRIP ST-24 1
17 91-7385 ASSEMBLT, DOOR ST-24 2
18 91-5621 ASSEMBLY, JET PIPE 4
19 91-6492 LATCH, DOOR 2
20 08-4600 SPRING, COMPRESSION 4
21 98-1637 MECHANICAL CONTROL PANEL WITH SWITCH 1
22 91-7684 STRAINER, CAVITY 2
23 98-1605 WELD ASSEMBLY, MIDDLE RACK 2
24 91-7699 RACK SIDE 4
25 10-4586 NUT, 1/2“ IPS, S.S. 6
26 10-8105 THERMOSTAT, SNAP DISC, PROBE TYPE 2
27 10-3343 NUT, BRASS, 1/2“ IPS 2
28 10-1956 SCREW, TAPTIGHT, 8-32 X 3/8“ 20
29 10-2571 NUT LOCK, 8-32 17
30 08-1204 PLUG, HOLE WHITE 4
31 10-2184 SCREW, HEX HEAD, 10-32, 3/4“ LG 8
32 91-7569 PANEL, SIDE 2
33 91-7327 PANEL, REAR 1
34 98-1632 INSULATION, FRONT 1
35 98-1631 INSULATION, REAR 1
36 08-7959 TUBING, NORPRENE 3/8” ID *
37 08-7960 TUBING, NORPRENE 5/8” ID *
38 98-1638 MECHANICAL CONTROL PANEL WITHOUT SWITCH 1
40 98-1640 DIGITAL CONTROL PANEL WITHOUT SWITCH 1
41 08-2702 BUSHING, DOOR, WHITE 4
42 91-7690 BRACKET, REED SWITCH 2
* AS MEASURED.
FEBRUARY 22, 2016 15 ST-24M SERIES CONVECTION STEAMERS
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DOOR ASSEMBLY
ITEM PART NO. DESCRIPTION QTY
1 91-7386 OUTER DOOR 1
2 91-7387 INNER DOOR 1
3 91-7388 GASKET RETAINING PLATE 1
4 91-7389 DOOR GASKET 1
5 91-5745 DOOR HANDLE 1
6 09-1608 STRIKER 1
7 08-5027 MAGNET 1
8 91-5901 MAGNET BRACKET 1
9 08-4600 COMPRESSION SPRING 2
FEBRUARY 22, 2016 16 ST-24M SERIES CONVECTION STEAMERS
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DOOR LATCH AND HANDLE
ITEM PART NO. DESCRIPTION QTY
1 91-5669 LATCH (OLD VERSION) 2
2 91-6734 HANDLE (OLD VERSION) 2
3 91-5745 HANDLE (NEW VERSION) 2
4 91-6492 LATCH (NEW VERSION) 2
FEBRUARY 22, 2016 17 ST-24M SERIES CONVECTION STEAMERS
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CONDENSER ASSEMBLY
ITEM PART NO. DESCRIPTION QTY
1 10-5859 VALVE, STEAM SOLENOID 1
2 08-4892 COUPLER, BRASS 3/8 OD X 1/2 THRD NPT 2
3 10-2885 UNION, FEMALE 1/2 IPS 1
4 10-2849 NIPPLE, CLOSE 1/2” NPT BRASS 2
5 98-1477 COUPLER, BRASS, BARB 3/8” X 3/8” NPT 1
6 08-6581 TEE, MALE 1/2” NPT X FEMALE 1/2“ BRANCH 1
7 10-3739 1/2” X 3/8 REDUCING BUSHING 1
8 98-1630 WELDMENT, COLD H20 STEAM VALVE 1
9 10-1055 TEE, 3/8” ALL ROUND 1
10 10-3644 PLUG, SQUARE HEAD 3/8” IPS, BRASS 1
11 08-7525 MIPPLE, CLOSED 3/8” NPT, BRASS 2
12 08-6498 VALVE, 3/8” NPT, COLD WATER CONDENSER 1
13 08-4912 COUPLER, BARB 5/8” OD X 1/2“ IPS 1
14 08-7962 COUPLER, BARB 5/8” OD X 3/8“ IPS 1
15 98-1477 COUPLER, BRASS BARB 3/8” X 3/8“ THD NPT 1
FEBRUARY 22, 2016 18 ST-24M SERIES CONVECTION STEAMERS
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