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3500 OWNER’S MANUAL
WARNING:
Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, injury or death. Read the installa-
tion, operation and maintenance instructions
thoroughly before installing or servicing this
equipment.
FOR YOUR SAFETY:
Do not store or use gasoline or other flam-
mable vapors and liquids in the vicinity of
this or any other appliance.
Post in a prominent location, instructions to
be followed in the event the user smells gas.
Th
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TABLE OF CONTENTS INTRODUCTION CIRCUITS ............................................................11 BASIC FUNCTIONING ........................................1 INDICATOR LIGHTS ...........................................11 SERVICE .............................................................1 BUZZER ..............................................................11 DOOR INTERLOCK SWITCH .............................11 INSTALLATION THERMOSTATIC SWITCH .................................11
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INTRODUCTION This service and parts manual contains general infor- At the end of the set interval, timer contacts switch mation, installation operation, principles of operation, to shut off the cooking operation and sound a signal trouble-shooting, and maintenance information for buzzer. The buzzer is silenced by returning the timer the Market Forge 3500 Pressureless Steam Cookers. dial to the OFF position. In the constant steam mode, Also included is a parts list in which each replaceable
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INSTALLATION ASSEMBLY: Equipment failure caused by inadequate water qual- The Pressureless Cooker is factory-mounted on a ity is not covered under warranty. cabinet base containing either a steam boiler or di- rect steam connection controls for the cooker. The CAUTION: assembled unit is shipped bolted to a skid, with cabi- PVC or CPVC are not acceptable materials for drains. net feet in a separate container. Steps required for assembly are as follows: INSTALLATION CHECK-OUT: Check-out procedure
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INSTALLATION ing from the drain line. shut off the power to the unit at its source then remove the control panel by unscrewing the eight 4.Observe cooker operation for several minutes. Op- mounting screws and pulling the panel away from eration is correct if timer dials begin to rotate after a the front frame. short delay period required for preheating. After the delay period plus the “4 minute” initial setting, the 8. Remove the two white hole plugs from the left timer dials will return t
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OPERATION STEAM SOURCE OPERATION: out of the compartment and then fully open the The Pressureless Cooker is supplied mounted on a door. cabinet containing either a steam boiler or controls 7. Unload by sliding pans of food from pan supports, for direct-connected steam. Manual controls are ac- taking care to avoid hitting compartment opening. cessed by opening the cabinet door. The start-up SHUT-DOWN PROCEDURE: procedure for the steam source is completed once No shut-down procedure is requir
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OPERATION TABLE 1 CONTROLS & INDICATORS (Refer to Fig. 1) ITEM DESCRIPTION FUNCTION Controls cooking up to 60 minutes for 1 Timer/Constant Steam uses constant operation. Indicated when lit that the cooker is 2 Indicator Light (Red) in operation. 3 Buzzer (Not Shown) Signals end of cooking period. Fig. 1 Control Panel 5
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OPERATION TEST KITCHEN BULLETIN MODEL 3500 PRESSURELESS 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) maxi- mum 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. 3. Fresh foods may also be cooked in this unit. Vegetables and other foods where the stock is not to be retained should be cooked in perforated 12” x 20”
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OPERATION PRESSURELESS STEAM COOKING TIMER SETTINGS The 3500 Pressureless Cooker is a two compartment unit. Each compartment holds five 12” x 20” x 2 1/2” or three 12” x 20” x 4” pans. This unit enables the cook to prepare foods close to the time of service. The cooking times given are timer settings and should be set on a preheated compartment. There is a thermostatic time delay in each compartment that adjusts the total time depending on the temperature and amount of the food. Therefo
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OPERATION VEGETABLES APPROX. RECOMMENDED TIMER APPROX/ NO. FROZEN PAN SIZE, 12” x 20” NUMBER SETTINGS IN COOKED SERVINGS ITEM WT. PER PAN PERFORATED OF PANS MINUTES PER PAN Beans, Snap Green 6 lbs. 2 1/2” 1-3 18-22 25-30 or Waxed (2.7 kg) (65mm) 3 oz. (85 g) Beets, 7 1/2 lbs. 2 1/2” 1-3 40-50 30-35 2” Diameter (3.4 kg) (65mm) 3 oz. (85 g) Broccoli, Stalks 6 lbs. 2 1/2” 1-3 14-18 25-30 1/2-3/4” (2.7 kg) (65mm) 3 oz. (85 g) Carrots. 9 lbs. 2 1/2” 1-3 18-21 35-40 Sliced (4 kg) (65mm) 3 oz. (85 g
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OPERATION MEAT, POULTRY, FISH APPROX. RECOMMENDED TIMER APPROX/ NO. FROZEN PAN SIZE, 12” x 20” NUMBER SETTINGS IN COOKED SERVINGS ITEM WT. PER PAN PERFORATED OF PANS MINUTES PER PAN Chicken, 8 lbs 2 1/2” 1-3 20-30 15-20 Cut-up (3.6 kg) (65mm) 2 oz. Protein (55 g) Chicken, 4 lbs. 3 each 4” 1-3 45-50 25-30 Whole (100 mm) 2 oz. Protein (55 g) Fowl, 5 lbs. or more, 2 each 4” 1-3 50-60 20-25 Whole (100 mm) 2 oz. Protein (55 g) Fish, 3 lbs 2 1/2” 1-3 10-15 12-15 Fillets (1.4 kg) (65mm) 2 oz. (55
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PRINCIPLES OF OPERATION is directed into the boiler (or direct-connected steam switch located inside the compartment. When the control) drain system. Steam inlet lines for compart- timer starts the cold water solenoids will energize. ments are equipped with normally closed solenoid valves operated by the electrical control circuits. The ELECTRICAL CIRCUITS: inlet valves are opened whenever the compartment The electrical circuits of the cooker control the power control circuit is activated by
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PRINCIPLES OF OPERATION Fig. 2 Pictorial Diagram, Steam and Water Circuits INDICATOR LIGHTS: by the proximity of a magnet within the door. When An indicator light is included for both compartments. the door is open, the switch contacts remain in the The light remains on (red) at all times when the co- open position. When the door is closed and secure- inciding timer dial is set and the door interlock switch ly latched in place, the magnet is near the switch to is closed. The light turns off
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TROUBLE-SHOOTING GENERAL: The information in this section is intended to assist ELECTRICAL FAULT ISOLATION: both the operator and service personnel in locating Correction of an electrical failure first requires isola- the general source of problems that may occur with tion of the fault to a single circuit or component. In the cooker. Before following any of the procedures most cases, the nature of the failure and its effect given in this section, the operator should be thor- upon the operation
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TROUBLE-SHOOTING The electrical trouble-shooting procedures that follow WARNING: require access to components and terminals of the Before removing control panel or checking connec- electrical control panel shown in Fig. 6 on page 21. tions and wiring, be sure that the circuit breaker for in- Electrical controls are reached by removing screws coming power is OFF. When power is supplied, all ex- that fasten the control panel to the frame. The panel posed terminals of the control panel carry 120 vo
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TROUBLE-SHOOTING Fig. 3 Wiring and Schematic Diagram 14
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TROUBLE-SHOOTING 3. Connect an ohmmeter between terminals 1 and 3. 3.Connect an ohmmeter between the terminals of the switch. 4. Rotate timer dial beyond the “0 Minute” point (any setting) to obtain a reading of zero ohms on the 4.Actuate the switch by closing the cooking compart- ohmmeter. If zero ohm reading cannot be obtained, ment door. If a zero reading cannot be obtained, timer contacts are defective and the timer must be the switch is defective and must be replaced. replaced. 5. Remove
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TROUBLE-SHOOTING is not obtained, the switch is defective. at the coil wire terminals with the cooker compartment in operation. If voltage of 120 volts is present and the 4. Shut off cooker, disconnect ohmmeter leads, and valve fails to open, the fault is in the valve coil. Defec- replace wires on switch terminals. tive valve coils are separately replaceable. BUZZER: WIRING: If the buzzer does not sound at the termination of the All of the electrical components of the cooker (timers, operat
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MAINTENANCE CAUTION: exploded views of the 3500 Cooker. In most cases, Under no circumstances should hardware (or parts) disassembly procedures will be obvious from the ex- be replaced with a different length, size, or type other ploded views. Instructions follow for procedures that than as specified in the parts list. The hardware used are not readily apparent. in the cooker has been selected or designed specifi- cally for its application, and the use of other hardware DOOR LATCH TENSION ADJU
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ILLUSTRATED PARTS LIST Fig. 4 Cabinet Assembly 18
