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OWNER'S MANUAL
ST-24 PRESSURELESS STEAM COOKER
INSTALLATION, OPERATION, MAINTANANCE, PARTS AND SERVICE
Form Number: S-4627
Printed in USA
Model: □ ST-24
Rev. B
10/12
Telephone (617) 387-4100, (866) 698-3188, Fax (617) 387-4456, (800) 227-2659
WARNING:
IMPROPER INSTALLATION, ADJUSTMENT,
ALTERATION, SERVICE OR MAINTENANCE CAN
CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
READ THESE INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS THOROUGHLY
BEFORE INSTALLING OR SERVICING THIS
FOR YOUR SAFETY:
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY
OF THIS OR ANY OTHER APPLIANCE.
INSTRICTIONS TO BE FOLLOWED IN THE EVENT
THE USER SMELLS GAS SHALL BE POSTED IN A
PROMINENT LOCATION. THIS INFORMATION
SHALL BE OBTAINED BY CONSULTING THE LOCAL
35 Garvey Street, Everett, MA 02149
custserv@mfii.com, www.mfii.com
0
EQUIPMENT.
CAUTION:
GAS SUPPLIER.
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Table of Contents
Related Manuals for Market Forge Industries ST-24
Summary of Contents for Market Forge Industries ST-24
- Page 1 OWNER’S MANUAL ST-24 PRESSURELESS STEAM COOKER Model: □ ST-24 WARNING: IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH. READ THESE INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT. FOR YOUR SAFETY:...
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Page 2: Table Of Contents
Table of Contents Digital Timers (Optional) ........16 INTRODUCTION ..............1 Description: ..............1 Kettle Switch (Optional) ......... 16 Basic Functioning: ............1 TROUBLE-SHOOTING ............17 Shipping Damage Claim Procedure: ....... 1 GENERAL ..............17 Visible loss or damage: ..........1 Trouble-Shooting Guide .......... -
Page 3: Introduction
Basic Functioning: The Model ST-24 may be operated with only one compartment in use; or both may be used simultaneously. Each compartment is equipped with identical controls, allowing selection of constant steam or 60-minute timer operation. -
Page 4: Concealed Loss Or Damage
Should repairs be required, a network of authorized agencies is available to assist with prompt service. A current Directory of Authorized Service Agencies may be obtained by contacting: Product Service Department Market Forge Industries Inc. 35 Garvey Street Everett, Massachusetts 02149... -
Page 5: Installation
INSTALLATION ASSEMBLY The Pressureless Cooker is factory-mounted on a cabinet base containing either a steam boiler or direct steam connection controls for the cooker. The assembled unit is shipped bolted to a skid, with cabinet feet in a separate container. Steps required for assembly are as follows: 1. -
Page 6: Initial Control Settings
Initial Control Settings Before beginning the start-up procedures for the cooker, the instruction plate and service manual for the steam boiler must be consulted and all start-up procedures completed to supply 15 PSI steam to the steam inlet line for the cooker. 1. - Page 7 7. Remove the door interlock assembly by unscrewing the two nuts that hold it in place (assembly is attached to the screws in the top right hinge mounting holes, see Figure 1 on page 6). 8. Remove the four screws in the right side hinge mounting holes and install them in the left side hinge mounting holes (where the hinges were originally mounted).
- Page 8 21. Square the door to the unit by raising or lowering the hinge side of the door, keeping the latch centered with the striker. 22. Visually inspect the door. Be sure that the door is square to the unit, the striker is centered with the latch, and the gasket is in contact with the entire lip of the cooking compartment.
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Page 9: Operation
OPERATING PROCEDURES The ST-24 Pressureless Steam Cooker defrosts frozen foods and cooks fresh and defrosted foods. Each cooking compartment permits selection of continuous (constant steam) cooking or timed (0–60 minutes) cooking. Instructions for operation are included in this section. Consult Test Kitchen Bulletin for detailed cooking information. -
Page 10: Shut-Down Procedure
Drip/Spill Trough Drainage The ST-24 Pressureless Steam Cooker has a drip/ spill trough below the cooking compartment door. It will catch any condensate gathering on the front of the unit when the door is opened. -
Page 11: Controls And Indicators
Figure 2, Controls and Indicators (ST-24 Control Panel) CONTROLS AND INDICATORS ST-24 Control Panel ITEM PART NO. DESCRIPTION FUNCTION 08-6464 Timer/Constant Steam Controls cooking up to 60 minutes or uses constant operation. 10-5052 Indicator Light (Red) Indicates cooking is in operation. -
Page 12: Test Kitchen Bulletin
TEST KITCHEN BULLETIN Model ST-24 Pressureless Steam Cooker Facts on Parade 1. Frozen vegetables should always be cooked in perforated 12” x 20” x 2-1/2” pans 7-1/2 lbs. (34 kg) maximum per pan. 2. Frozen entrees should be underlined with a perforated pan for best results. If they are defrosted first, the heating time will be decreased. -
Page 13: Cooking Guide
The ST-24 Pressureless Cooker is a two compartment unit. Each compartment holds ten 12” x 20” x 2- 1/2” or six 12” x 20” x 4” pans. This unit enables the cook to prepare foods close to the time of service. - Page 14 Approx. Frozen Recommended Timer Approx. NO. WT. Per Pan 12” x 20” (1/1) NO. of Settings in Cooked Servings ITEM Lbs. Perforated Pan Pans Minutes Per Pan Shrimp, 3oz. Green 16-20 2-1/2” (65mm) 11-15 (85g) Bulk Pack, 6oz. Frozen 3-1/2 -4 1.6-1.8 2-1/2”...
- Page 15 Canned Vegetables Approx. Recommended Timer Approx. NO. WT. Per Pan 12” x 20” (1/1) NO. of Settings in Cooked Servings ITEM Lbs. Perforated Pan Pans Minutes Per Pan Vegetables, 3oz. Canned 2-1/2” (65mm) 5-10 25-30 (85g) Meat – Poultry – Fish Approx.
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Page 16: Principles Of Operation
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 fitted 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. -
Page 17: Electrical Circuits
The valves respond to a thermostatic switch located inside the compartment. When the timer starts the cold water solenoids will energize. Figure 3, pictorial Diagram, Steam and Water Circuits (Model ST-24) 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. -
Page 18: Indicator Lights
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. -
Page 19: Trouble-Shooting
TROUBLE-SHOOTING GENERAL The information in this section is intended to assist both the operator and service personnel in locating the general source of problems that may occur with the cooker. Before following any of the procedures given in this section, the operator should be thoroughly familiar with the operating instructions and the function of all controls that are described in the Operation section, pages 7-11. -
Page 20: Incoming Power
GENERAL TROUBLE-SHOOTING GUIDE TABLE CONTINUED PROBLEM PROBABLE CAUSE REMEDY Steam continues to Timer contacts faulty. Replace timer. See 60-minute timer on flow into compartment page 19. and/or buzzer fails to Buzzer faulty. Replace buzzer. See Buzzer on page sound at end of timer setting. -
Page 21: Electrical Fault Isolation Guide
ELECTRICAL FAULT ISOLATION GUIDE FAILURE FAULT LOCATION 1. Will not operate in either CONSTANT STEAM or 60- a. Incoming power MINUTE TIMER positions. b. Timer Door interlock switch d. Wiring 2. Operating in CONSTANT STEAM position but not in a. 60-minute timer 60-MINUTE TIMER position. -
Page 22: Door Interlock Switch
To confirm 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.”... -
Page 23: Buzzer
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 verified 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”... -
Page 24: Wiring Diagrams
Wiring Diagrams Figure 4, Wiring Diagram, Mechanical Controls, Model ST-24... - Page 25 Figure 5, Wiring Diagram, Digital Controls, Model ST-24...
- Page 26 Figure 6, Wiring Ladder Diagram, Model ST-24...
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Page 27: Maintenance
It is recommended that the user personnel never attempt to make repairs or replacements to the equipment without the assistance of an authorized service agent. Assistance in service may be obtained from Market Forge Industries. A current Directory of Authorized Service Agencies may be obtained by contacting:... -
Page 28: Cleaning Procedure
The Illustrated Parts List section of this manual contains a listing of all replacement parts and associated exploded views of the ST-24 cooker. In most cases, disassembly procedures will be obvious from the exploded views. Instructions follow for the procedures that are not readily apparent. -
Page 29: Exterior Panel Removal
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 mounting plate must fit 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. -
Page 30: Illustrated Parts List
ILLUSTRATED PARTS LIST Cabinet Assembly Figure 7, Cabinet Assembly... -
Page 31: Cabinet Assembly Parts List
RELAY, TUBE 10-9175 RELAY, BASE 91-6940 BRACKET, RELAY 91-6475 HINGE, ASSEMBLY TOP 91-6476 HINGE, ASSEMBLY BOTTOM 91-7334 TROUGH, DRIP ST-24 91-7385 ASSEMBLT, DOOR ST-24 91-5621 ASSEMBLY, JET PIPE 91-6492 LATCH, DOOR 08-4600 SPRING, COMPRESSION 98-1637 MECHANICAL CONTROL PANEL WITH SWITCH... -
Page 32: Door Latch And Handle
Door Latch and Handle Figure 8, Door Latch and Handle, Model ST-24 Door Latch and Handle Parts List ITEM PART NO. DESCRIPTION QTY. 91-5669 LATCH (OLD VERSION) 91-6734 HANDLE (OLD VERSION) 91-5745 HANDLE (NEW VERSION) 91-6492 LATCH (NEW VERSION) -
Page 33: Door Assembly
Door Assembly Figure 9, Door Assembly Door Assembly Parts List ITEM PART NO. DESCRIPTION QTY. 91-7386 OUTER DOOR 91-7387 INNER DOOR 91-7388 GASKET RETAINING PLATE 91-7389 DOOR GASKET 91-5745 DOOR HANDLE 09-1608 STRIKER 08-5027 MAGNET 91-5901 MAGNET BRACKET 08-4600 COMPRESSION SPRING... -
Page 34: Control Panel Assembly
Control Panel Assembly Figure 10, Control Panel Assembly Control Panel Assembly Parts List ITEM PART NO. DESCRIPTION QTY. 98-1616 CONTROL PANEL 98-1612 LEXAN, CONTROL PANEL 08-6464 60-MINUTE TIMER 08-6541 TERMINAL STRIP 91-6471 BRACKET, TERMINAL STRIP 10-7395 BUZZER 08-3826 KNOB, TIMER 10-5052 LIGHT, RED... -
Page 35: Condenser Assembly
Condenser Assembly Figure 11, Condenser Assembly Condenser Assembly Parts List ITEM PART NO. DESCRIPTION QTY. 10-5859 VALVE, STEAM SOLENOID 08-4892 COUPLER, BRASS 3/8 OD X 1/2 THRD NPT 10-2885 UNION, FEMALE 1/2 IPS 10-2849 NIPPLE, CLOSE 1/2” NPT BRASS 98-1477 COUPLER, BRASS, BARB 3/8”...