Middleby Marshall PS200-R68 II. Operation, Start Up Procedures -- Gas Heated Ovens

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SECTION 3

OPERATION

II. OPERATION

A. Start Up Procedures -- Gas Heated Ovens

4. The temperature controller should be set at your

desired baking temperature. See section on bake times to determine desired temperature.

Initial Start Up

1.Check that manual gas shutoff valve is on. Valve is located below machinery compartment. See Figure 2-12.

Daily Start Up

1. Turn blower switch to the on (I) position. This

starts the main blower fan and the cooling fan. The blower circulates air through the air fingers and must stay on during the cooking or baking process.

2.Check to see if the cooling fans (see Figures 1-4 and 1-6) are operating when the blower switch is turned on (I). The cooling fans cool the electrical components and burner blower motor. The cooling fan, located at the rear of the machinery cabinet blows air into and through the cabinet. Air is exhausted out the back of the oven. A cooling fan is also located in the bottom of the control box to draw air through the rear louvers and out the bottom.

Clean the cooling fan grills and louvers daily.

NOTE: For complete temperature controller operation instructions refer to Step B.

5. Turn the heat switch to the on (I) position. This will

complete a circuit which supplies power to the burner. When an oven that has not been in operation for approxi- mately 1/2 hour is turned on it goes through a 15 second purge cycle. The burner blower motor will not operate during the time the main fan is purging the oven. After 15 seconds the burner blower motor starts, which can be detected by feeling a slight vibration when touched. This should permit the burner to light.

When in operation, the burner is either on low or high flame. A flame sensing electrode must be satisfied to keep the pilot and gas valve open. If for some reason the pilot flame is extinguished, the pilot will try to relight for 90 seconds. If the pilot does not relight in 90 seconds the oven will go into automatic safety lockout.

To relight the oven the heat switch must be turned off

for 5 minutes and then repeat the oven start-up proce- dure.

IMPORTANT NOTE: The cooling fan will operate when

6. Close front window.

the blower switch is turned on (I). It must operate to keep

7. Oven will reach a baking temperature of 500° F (260°

the machinery cabinet below 140°F. (60° C.).

 

 

 

C) in approximately 10 minutes. Allow the oven to cycle

WARNING: IF FAN BLADE IS NOT ROTATING, BRO-

for 30 minutes after it has reached desired bake tempera-

KEN OR IF FAN ASSEMBLY IS MISSING FROM MAIN

ture and the oven is now ready for baking.

BLOWER MOTOR SHAFT, DO NOT OPERATE OVEN.

Power Failure

REPLACE COOLING FAN BLADE BEFORE OPERAT-

In case of power failure, turn off all switches, open oven

ING OVEN. Serious damage could be done to the burner

window and remove product. After power has been

blower motor and/or the solid state electrical compo-

reestablished follow normal start-up procedure.

nents if oven is operated while cooling fan is not running

 

or vent grill is plugged.

 

 

3. Turn the conveyor

switch to the on (I) position.

 

This now starts the conveyor belt moving through the

 

oven. Set conveyor speed digital control for desired bake

 

time

.

 

 

CAUTION

The burner will not operate and gas will not flow through the burner without electric power. No attempt should be made to operate the oven during power failure.

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Contents Manual Middleby Marshall INC This Manual Must Be Kept For Future Reference Table of Contents Table of Contents Page Section Description Middleby Series PS200-R68 OvensDescription Section GAS Heated Ovens Electric Heated OvensHeat Transfer and How It Works Series PS200-R68 Air FlowII. Principle of AIR Flow Component Location Front Window ConveyorElectric Heaters Electric Oven Only Cooling FanAir Fingers FingersSection Installation UnloadingPS220-R68 Oven Installation Required Kits and Equipment PS200-R68 Oven Installation Required Kits and EquipmentPS224-R68 Oven Installation Required Kits and Equipment Series PS200-R68 Gas & Electric Oven Installation Kits Parts List for Series PS200-R68 GAS Oven Installation KITParts List for Series PS200-R68 Electric Oven PS200-R68, P/NParts List for Series PS200-R68 Single Oven Option KIT Parts List for Series PS200-R68 Double Oven Option KITSeries PS200-R68 Oven Dimensions II. Control BOX and Cable Installation Control Box, Wireway and Cable InstallationIII. Flue Vent Installation IV. Restraint Cable Installation GAS Oven ROUGH-IN Typical InstallationProvided by Customer Electrical Rating Electric Oven ROUGH-INCircuit Breaker SuggestedVentilation Guidelines Vent HoodVII. Electrical Connection Information for ALL Ovens VI. Electric Supply for GAS Heated OvensOven Specifi Cation Data Plate Refer Ence VIII. Electric Supply for Electrically Heated Ovens Junction Connection BoxDo not Connect Black Lead to High LEG Black and White Must IX. GAS Supply for GAS Heated OvensDuring Pressure Testing Note Following Trol Valve Regulator During Initial Turn On of GAS, IT isInstalling Backstop and End Stop Conveyor Backstop and END Stop IN- StallationSection Installation Controls and Components Section OperationPS200-R68 Series Control Functions II. Component Information and Location Conveyor Speed Digital Control Refer to -4Initial Start Up Start Up Procedures -- Gas Heated OvensII. Operation Daily Start UpMIN SEC Control PanelTemperature Controller Operation Instructions 351 F651 Start Up Procedures -- Electric Ovens Power FailureConveyor Speed Bake Time and Time of Delivery Shut Down Gas or Electric OvensBake Time will be the same for any size product Section Operation Maintenance Daily Section MaintenanceExterior Removing conveyor from oven for cleaning II.MAINTENANCE Weekly Oven Disassembly and CleaningPrecautions Crumb PansSection Maintenance Oven interior disassembly Window disassembly for cleaning Loading the soak binSection Maintenance Cleaning parts that were soaked overnight RED Lobster Finger Configuration in Oven Cleaning interior of oven Oven reassembly Section Maintenance Top Finger Upper End Plug Removable Crumb Pans Lower End Plug Section Maintenance Do not adjust belt if HOT Cleaning fan motor III. Maintenance Every 3 MonthsElectrical terminals Checking and/or replacing main blower fan belt Main Blower Fan Shaft Bearing Lubrication Maintenance Parts IV. Maintenance Every 6 MonthsQuantity Middleby Marshall Description Part Number Section Maintenance Section Troubleshooting Problem Products Overcooked or UndercookedProblem Oven will not Heat Section Troubleshooting Fingers assembled incor Rectly after cleaning Section Parts List Figure no DescriptionOven PANELS, Window and Legs Part QTY Description AIR Fingers Part Description Control Panel Control Panel Enclosure Blower and Shroud BELT, V-NOTCHED Conveyor QTY Description GAS Burner and Piping Assembly GAS Control Valve Machinery Compartment Part QTY Model Description Electric Oven Electric Panel Electric Panel W/O Components Junction BOX and Export Transformer Transformer .75 KVA 240-480V Export only Section Parts List Section Electrical Schematics Fan Electrical Schematics Section Middleby Marshall

PS200-R68 specifications

The Middleby Marshall PS200-R68 is an innovative commercial conveyor oven that has set new standards in the foodservice industry. Known for its exceptional performance and versatility, this high-efficiency oven is particularly popular among pizza restaurants, fast-casual dining establishments, and any operation that requires high-volume cooking.

One of the standout features of the PS200-R68 is its advanced cooking technology. It utilizes Middleby Marshall's patented "Digital Edge Technology," which ensures precise heat distribution and consistent cooking results. This technology optimizes the airflow within the oven, allowing for uniform cooking across various food products. From pizzas to baked goods, the PS200-R68 can handle it all with ease.

The PS200-R68 boasts a robust construction designed for the demands of a commercial kitchen. It features a stainless-steel exterior, which not only enhances durability but also offers an appealing aesthetic suitable for front-of-house applications. The interior of the oven is equipped with durable, easy-to-clean materials that ensure hygiene and compliance with food safety standards.

Another key characteristic of the PS200-R68 is its energy efficiency. The oven is engineered to minimize energy consumption without compromising performance. Its advanced insulation helps maintain consistent temperatures, thereby reducing heat loss during operation. This feature significantly lowers operational costs, making the PS200-R68 an economical choice for businesses.

Additionally, the PS200-R68 comes with user-friendly digital controls that offer precise temperature settings and cooking times. Operators can easily customize cooking programs to achieve desired results, increasing operational efficiency. With its high-speed conveyor system, the oven ensures quick cooking times, allowing operators to meet high-demand periods without delays.

Furthermore, the Middleby Marshall PS200-R68 is designed to accommodate a variety of food types. Its adjustable conveyor speed allows for flexible cooking times, enabling operators to cook everything from perfectly baked pizzas to toasted sandwiches. This versatility makes it an invaluable addition to any commercial kitchen.

In summary, the Middleby Marshall PS200-R68 is a cutting-edge conveyor oven designed for high performance and energy efficiency. With its digital edge technology, durable construction, and versatile cooking capabilities, it is the ideal choice for foodservice operators looking to enhance their menu offerings while maintaining operational efficiency.
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