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Middleby Cooking Systems Group PS360/PS360WB - page 1
PS360L/PS360WB-L Tandem PS360/PS360WB Double Tandem PS360U/PS360WB-U Tri Tandem PS360U/PS360WB-U Quad Tandem owner's operating & installation manual SERIES PS360/360WB T ANDEM GAS OVEN MODELS A MIDDLEBY COMPANY © 1998 Middleby Marshall Inc. Part No. 38615 Price US $30.00 R. Aug. 98, Rev. B, Ver. 3 PS360/360WB Tandem Gas Ovens: English ...
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Middleby Cooking Systems Group PS360/PS360WB - page 2
NOTICE: This Operating and Installation Manual should be given to the user. The operator of the oven should be familiar with the functions and operation of the oven. This manual must be kept in a prominent, easily reachable location near the oven. The oven has a combustion system suitable for use with all natural gases and can be converted by a qua ...
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Middleby Cooking Systems Group PS360/PS360WB - page 3
Middleby Marshall Inc. 1400 Toastmaster Drive Elgin, IL 60120 USA (847) 741-3300 FAX (847) 741-4406 Middleby Corporation 24-hour Service Hotline 1-800-238-8444 www .middleby .com MIDDLEBY MARSHALL INC. OVEN LIMITED WARRANTY (Non U.S.A.) The seller warrants equipment manufactured by it to be free from defects in material and work ...
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Middleby Cooking Systems Group PS360/PS360WB - page 4
iii NOTE Wiring Diagrams Are Contained In This Manual And Are Also Located Inside The Control Box Door. T ABLE OF CONTENTS page SECTION 1 - DESCRIPTION OVEN SPECIFICATION CHARTS ............................ 1- 1 CHART OF ORIFICE SIZES, GAS PRESSURES, NOMINAL INPUT RATINGS & GAS FLOW ....... 1-1 I . PRINCIPLE OF AIR FLOW ........................ ...
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Middleby Cooking Systems Group PS360/PS360WB - page 5
TABLE OF CONTENTS SECTION 4 - MAINTENANCE I . MAINTENANCE - DAILY ..................................... 4- 1 A . Exterior ........................................................ 4- 1 B. Fans and Grills ........................................... 4- 1 C. Conveyor Belts ............................................ 4- 2 D. Crumb Pans ................ ...
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Middleby Cooking Systems Group PS360/PS360WB - page 6
NOTES: v ...
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Middleby Cooking Systems Group PS360/PS360WB - page 7
1-1 SECTION 1 DESCRIPTION OVEN INFORMATION (per oven section) PS360 PS360WB Weight, Single Oven 1350 lbs. (612kg) 1400 lbs. (634kg) Shipping Weight, Single Oven 1675 lbs. (760 kg) 1750 lbs. (780kg) Shipping Cube, Single Oven Approx. 104.5 ft 3 (3.0 m 3 ) Approx. 122 ft. 3 (3.5m 3 ) Rated Heat Input 135,000 BTU (34,020 kcal, 40 kW/hr) 170,000 BTU (4 ...
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Middleby Cooking Systems Group PS360/PS360WB - page 8
1-2 SECTION 1 DESCRIPTION 1 2 4 3 4 3 2 3 I. PRINCIPLE OF AIR FLOW Air is heated in the heating chamber (1), then pulled into the impellers or blowers (2), which push the air into the oven plenum and delivers the heated air into the air fingers (3). The fingers contain an inner plate and outer plate which columnate the air and evenly distribute the ...
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Middleby Cooking Systems Group PS360/PS360WB - page 9
1-3 SECTION 1 DESCRIPTION Figure 1-4. Air Fingers Showing Air Passing Through Inner Plate And Outer Plate Which Forms High Velocity Columns Of Air To Product. Inner Plate Outer Plate Inner Plate Air Flow From Plenum Chamber Air Flow From Plenum Chamber High Velocity Columns of Air to Product Outer Plate A. Heat Transfer and How It Works 1. Heat con ...
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Middleby Cooking Systems Group PS360/PS360WB - page 10
1-4 SECTION 1 DESCRIPTION B. Air Fingers The Middleby Marshall ovens are heavy duty conveyorized hot air ovens employing vertical air streams (Figure 1-3 and 1-4) to give uniform and intensive heating. The columnated vertical streams of hot air provide an exceptional heat transfer rate and generally bake faster and at lower temperatures than convec ...
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Middleby Cooking Systems Group PS360/PS360WB - page 11
1-5 SECTION 1 DESCRIPTION II. COMPONENT FUNCTION The components for the lower and upper ovens are identical. The following description covers the lower oven. A. Conveyor The conveyor is driven by a direct current electric motor operating through a gear reducer, (See Figure 1-6). The motor speed is controlled by a digital control. The stainless stee ...
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Middleby Cooking Systems Group PS360/PS360WB - page 12
1-6 SECTION 1 DESCRIPTION D. Cooling Fans -- See Figure 1-7 There are two cooling fans located in the back of each oven. These fans blow cool air in through the machinery compartment, across the blower motors, and out the rear of the top cover, or out the front bottom of the lower oven. E. Blower A blower is located in each end of each oven section ...
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Middleby Cooking Systems Group PS360/PS360WB - page 13
1-7 SECTION 1 DESCRIPTION F. Air Fingers The Air Finger Assemblies are made up of three parts as follows (See Figure 1-8): 1. Outer Plate- The Outer Plate is the removable covering with tapered holes, which directs the air stream onto the product to be baked. Outer plates are manufactured with 1 row of holes (L1 finger), 3 rows of holes (L3 finger) ...
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Middleby Cooking Systems Group PS360/PS360WB - page 14
1-8 SECTION 1 DESCRIPTION NOTES: ...
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Middleby Cooking Systems Group PS360/PS360WB - page 15
2-1 SECTION 2 INSTALLATION WARNING Do not obstruct the flow of combustion and ventilation air to and from your oven. There must be no obstructions around or underneath the oven. I. UNLOADING/UNPACKING Your Middleby Marshall Ovens are shipped partially assembled. Each oven section will arrive in its own crate of the following size and weight: PS360U ...
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Middleby Cooking Systems Group PS360/PS360WB - page 16
2-2 SECTION 2 INSTALLATION 2" 51mm Minimum 18" 458mm 18" 458mm 12" 305mm 3” 76mm II . INSTALLATION, PREPARATION, AND SUPPLY When preparing the oven for installation at a location, the latest International, National or Local Requirements should be adhered to. The ovens must be installed on an even (level) non-flammable flooring ...
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Middleby Cooking Systems Group PS360/PS360WB - page 17
2-3 SECTION 2 INSTALLATION III. VENTILATION SYSTEM IMPORTANT Where international, national, or local codes require the installation of fire suppression equipment or other supplementary equipment, DO NOT mount the equipment directly to the oven. MOUNTING SUCH EQUIPMENT ON THE OVEN MAY: VOID AGENCY CERTIFICATIONS RESTRICT SERVICE ACCESS L ...
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Middleby Cooking Systems Group PS360/PS360WB - page 18
2-4 SECTION 2 INSTALLATION PS360L/WB-L Tandem PS360/WB Double Tandem PS360U/WB-U Tri Tandem Item Part # Description PS360U/WB-U Quad Tandem 1 22361-0001 Flexible Gas Hose 2 4 3 4 2 22450-0028 Adjustable Legs 8 8 12 16 3 30773 Flue Vent, 14"Lg. 2 - - - 4 30759 Flue Vent, 29-1/2"Lg. - 2 3 4 5 30758 Flue Vent, 50" Lg. - 2 - - 6 21256-00 ...
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Middleby Cooking Systems Group PS360/PS360WB - page 19
2-5 SECTION 2 INSTALLATION 6” 152mm 10-1/2” 267mm 16-1/2" 419mm 11-1/2" 292mm 27-1/4" 692mm 27-1/4" 692mm 54-1/2" 1384mm 17-3/4" 451mm 31-1/2" 800mm 45-1/2" 1156mm 144-1/2" 3670mm 109" 2769mm 17-3/4" 451mm 42" 1067mm 40" 1016mm 6-1/2" 165mm 45" 1143mm 42-3/4" 1086mm ...
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Middleby Cooking Systems Group PS360/PS360WB - page 20
2-6 SECTION 2 INSTALLATION 34" 864mm 16-1/2" 419mm 11-1/2" 292mm 27-1/4" 692mm 27-1/4" 692mm 54-1/2" 1384mm 5-27/32" 148mm 10-1/8" 258mm 6-1/4" 158mm 11-1/2" 292mm 31-1/2" 800mm 6-1/2" 165mm 144-1/2" 3670mm 109" 2769mm 17-3/4" 451mm 17-3/4" 451mm 52" 1321mm 81-1/2& ...
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Middleby Cooking Systems Group PS360/PS360WB - page 21
2-7 SECTION 2 INSTALLATION Figure 2-7 Dimensions and Data: PS360U Tri Tandem ...
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Middleby Cooking Systems Group PS360/PS360WB - page 22
2-8 SECTION 2 INSTALLATION Figure 2-8 Dimensions and Data: PS360WB-U Tri Tandem ...
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Middleby Cooking Systems Group PS360/PS360WB - page 23
2-9 SECTION 2 INSTALLATION Figure 2-9 Dimensions and Data: PS360U Quad Tandem ...
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Middleby Cooking Systems Group PS360/PS360WB - page 24
2-10 SECTION 2 INSTALLATION Figure 2-10 Dimensions and Data: PS360WB-U Quad Tandem ...
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Middleby Cooking Systems Group PS360/PS360WB - page 25
2-11 SECTION 2 INSTALLATION IV. THERMOCOUPLE INSTALLATION 1. Install the thermocouple sensing bulb into the correct hole in rear of bake chamber as shown in Figure 2-11. 2. Thread thermocouple lead through grommet and into the machinery compartment. 3. Remove the right-side ac- cess panel of the machinery compartment. Thread the thermocouple lead t ...
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Middleby Cooking Systems Group PS360/PS360WB - page 26
2-12 SECTION 2 INSTALLATION 8 7 6 5 4 L2 L1 9 10 11 12 13 14 15 16 4. Connect the thermocouple leads to the temperature con- troller as shown in Figure 2-13. 5. Repeat Steps 1-4 for each of the other ovens in the in- stallation. 8 = White = Positive R = No Connection 7 = Red = Negative Figure 2-13 Thermocouple Lead Connections ...
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Middleby Cooking Systems Group PS360/PS360WB - page 27
2-13 SECTION 2 INSTALLATION V. ASSEMBLY If the installation includes upper ovens mounted atop lower ovens, the ovens must be stacked before joining the tandem ovens together. If the installation includes ovens that are to be mounted on stands, assemble the ovens to the stands before joining the ovens together. An exploded view of the stand is shown ...
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Middleby Cooking Systems Group PS360/PS360WB - page 28
2-14 SECTION 2 INSTALLATION JOINING THE OVEN BODIES For TANDEM and DOUBLE TANDEM installations, perform Steps 1-7 to join the ovens. For TRI TANDEM installations, perform Steps 1-7 to join two of the ovens together, and ensure that they are level; then, repeat Steps 1-7 to join the third oven to the two that are assembled. For QUAD TANDEM installat ...
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Middleby Cooking Systems Group PS360/PS360WB - page 29
2-15 SECTION 2 INSTALLATION 3. Insert three of the supplied 1/2 x 5 bolts through the holes in the frame of the right oven, pointing outward as shown in Figure 2-17. Then, slide the spacers into place on the bolts. 2-1/2 x 8 (64 x 203mm) spacers 2-1/2 x 2-1/2 ( 64 x 64mm) spacers Bolts Figure 2-17 Bolts and Spacers 4. Push the ovens ...
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Middleby Cooking Systems Group PS360/PS360WB - page 30
2-16 SECTION 2 INSTALLATION 5. Check the alignment of the track rails using a straightedge. The rails MUST BE LEVEL across the gap between the ovens. If necessary, adjust the oven legs to align the track rails. Figure 2-19 Checking Track Rail Alignment 6. Tighten all of the attaching bolts. Check that the mating edges of the ovens align properly. I ...
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Middleby Cooking Systems Group PS360/PS360WB - page 31
2-17 SECTION 2 INSTALLATION 9 . Test-fit the transition section of the conveyor frame, as shown in Figure 2-21. The alignment pins on the bottom of the frame ensure correct spacing of the center ovens. Figure 2-21 Transition Frame Placement 10. Attach the two angled support brackets between the two center ovens, as shown in Figures 2-22a and 2-22b. ...
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Middleby Cooking Systems Group PS360/PS360WB - page 32
2-18 SECTION 2 INSTALLATION 10. Remove the transition section of the conveyor frame. Place the transition floor panel into place atop the support brackets. See Figure 2-23. 11. Replace the transition (center) conveyor section, as shown in Figure 2-24. Figure 2-23 Installing the Transition Floor Panel Figure 2-24 Replacing the Transition Frame ...
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Middleby Cooking Systems Group PS360/PS360WB - page 33
2-19 SECTION 2 INSTALLATION INSTALLING THE CONVEYOR FRAME AND BELT 1. Insert the conveyor frame into the oven as follows: For TRI TANDEM ovens, slide one center section and one end section of the frame into EACH END of the oven. The four sections should butt against each other. For QUAD TANDEM ovens, slide two intermediate sections and one end sect ...
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Middleby Cooking Systems Group PS360/PS360WB - page 34
2-20 SECTION 2 INSTALLATION 2 . Slide the conveyor belt through the support rods underneath the frame, and thread it through the oven. Then, reach through the oven window and pull the free end of the belt through the oven so that it lies atop the conveyor frame. Check that the links on the conveyor are oriented as shown in Figure 2-26. Direction of ...
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Middleby Cooking Systems Group PS360/PS360WB - page 35
2-21 SECTION 2 INSTALLATION 5. For a TANDEM, DOUBLE TANDEM, or TRI TANDEM oven installation, skip ahead to the next section. For a QUAD TANDEM oven installation, continue on to Step 6. Figure 2-29 Transition Assembly 6. Slide the top transition panel into place. Then, slide the two transition side panels into place. See Figure 2-29. 7. If the four ...
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Middleby Cooking Systems Group PS360/PS360WB - page 36
2-22 SECTION 2 INSTALLATION 6 6 4 5 2 2 3 3 1 5 GAS OVEN ROUGH-IN UTILITY ROUGH-IN DIMENSIONS AND POSITIONING GAS SUPPLY & ELECTRICAL SUPPLY PROVIDED BY CUSTOMER DO NOT USE CONDUIT FOR GROUND CIRCUIT BREAKER 1 circuit breaker/fused disconnect switch with lockout/tagout is required for each oven cavity. Wire each oven cavity separately. ELECTRIC ...
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Middleby Cooking Systems Group PS360/PS360WB - page 37
2-23 SECTION 2 INSTALLATION VI. ELECTRICAL CONNECTION Check the oven data plate before making any electric supply connections. Electric supply connections must agree with data on the oven data plate. A typical oven data plate is shown in Figure 2-34 (on Page 2-24). NOTE: When the oven is installed, it must be electrically grounded in accordance wit ...
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Middleby Cooking Systems Group PS360/PS360WB - page 38
2-24 SECTION 2 INSTALLATION Figure 2-34 Typical Oven Data Plate - Models PS360/PS360WB ...
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Middleby Cooking Systems Group PS360/PS360WB - page 39
2-25 SECTION 2 INSTALLATION Figure 2-35 Flexible Hose Connector Installation Appliance Connection/ Male Nipple Flexible Hose Correct Position Full-Flow Gas Shutoff Valve To Gas Supply Pipe 90° ST Elbow Union VII. GAS SUPPLY FOR GAS HEATED OVENS Pipe sizing -- Always install a shut off valve in the gas supply line to the oven. This valve should be ...
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Middleby Cooking Systems Group PS360/PS360WB - page 40
2-26 SECTION 2 INSTALLATION VIII. PREPARATION FOR VARIOUS GASES Before proceeding to set up the oven for a specific gas, the main gas supply valve and the electrical supply circuit breaker should be turned off. When preparing the oven for use of Group H or L Natural gases, the orifice (Manifold) pressure should be adjusted to the values shown in th ...
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Middleby Cooking Systems Group PS360/PS360WB - page 41
2-27 SECTION 2 INSTALLATION Outlet Pressure Tap Low Flame Bypass Orifice 3/4 Union Pilot Line Low Flame Bypass Line 1/2 Nuts Main Orifice Governor Adjustment Gas Converter Inlet Pressure Tap Insert Converter In this Position for Pressure Regulation Insert Converter In this Position for use with LP Gas Burner Blower Air Adjustment PlateBurner ...
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Middleby Cooking Systems Group PS360/PS360WB - page 42
2-28 SECTION 2 INSTALLATION IX. CHANGING ORIFICES TO CHANGE MAIN ORIFICE (Refer to Figure 2-36) 1. Turn off main gas supply valve. 2. Open 3/4" union in gas supply line. 3. Remove 1/2" nuts securing gas train to the burner housing. 4. Using a 11/16" wrench remove orifice from the mounting flange. 5. Install new orifice in reverse ord ...
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Middleby Cooking Systems Group PS360/PS360WB - page 43
2-29 SECTION 2 INSTALLATION 4. Replace cover screw on adjustment valve and turn off main gas supply valve. 5. Record the reading obtained from the gas meter and calculate obtained gas flow. Compare this to the indicated flow in the CHART OF ORIFICE SIZES, GAS PRESSURES, NOMINAL INPUT RATINGS AND GAS FLOW on Page 1. 6. Note the following comments an ...
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Middleby Cooking Systems Group PS360/PS360WB - page 44
2-30 SECTION 2 INSTALLATION SPECIAL NOTICES: The ovens should be operated only in an area that has good air circulation. The oven must be installed under an electrically powered ventilating hood. Installation of replacement parts requiring access to the interior of the oven is permitted only by authorized service personnel. The operator should be p ...
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Middleby Cooking Systems Group PS360/PS360WB - page 45
3-1 SECTION 3 OPERATION SECTION 3 OPERA TION I. CONTROL FUNCTIONS Figure 3-1. Oven Controls RESET RESET Ignition Reset Switch Door Safety Switch (Inside) Blower Switch Heat Switch Conveyor Switch Temperature Controller Conveyor Speed Controller and Indicator Conveyor Speed Controller and Indicator Temperature Controller Conveyor Switch Heat Switc h ...
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Middleby Cooking Systems Group PS360/PS360WB - page 46
3-2 SECTION 3 OPERATION II. COMPONENT INFORMATION AND LOCATION (EACH OVEN SECTION) A. Door Safety Switch Located at the inside upper left corner of the control box. WARNING: DO NOT TOUCH THE WIRES GOING TO THIS SWITCH BECAUSE CUR- RENT IS ALWAYS PRESENT. Opening the control panel per- mits the switch to open, discon- necting power to all electrical ...
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Middleby Cooking Systems Group PS360/PS360WB - page 47
3-3 SECTION 3 OPERATION to maintain a constant temperature. The temperature controller contains a high-limit (safety) switch that shuts down the oven when the oven reaches 343°C (650° F) and a low-limit switch which allows the oven to cool down to 82° C (180° F) before shutting off the blowers. E. Conveyor Switch The on/off ("I"/" ...
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Middleby Cooking Systems Group PS360/PS360WB - page 48
3-4 SECTION 3 OPERATION III. STEP-BY-STEP OPERATION A. Startup Procedure 1. Turn on the main disconnect switch / circuit breaker. 2. Open the manual gas supply valve. 3. Turn the blower switch to "I" (on) 4. Set the temperature controller to the desired baking temperature. (Refer to paragraph B for Temperature Controller Operating Instruc ...
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Middleby Cooking Systems Group PS360/PS360WB - page 49
3-5 SECTION 3 OPERATION 5. Turn the heat switch to "I" (on). The ignition system goes through a 45-second purge time after which the pilot lights and ignites the burner. If the burner does not ignite, the red light on the "RESET" pushbutton switch will light. The RESET switch must be pushed to restart the ignition sequence. This ...
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Middleby Cooking Systems Group PS360/PS360WB - page 50
3-6 SECTION 3 OPERATION Middleby Marshall ALM HEAT 251 TEMP C Figure 3-8 b. Changing the 'set point'. Press the UP Arrow button ▲ or DOWN Arrow button ▼ . The temperature set point will increase or de- crease. If this button is kept depressed, the tempera- ture set point will continue to increase or decrease at a faster rate. 2. Displ ...
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Middleby Cooking Systems Group PS360/PS360WB - page 51
3-7 SECTION 3 OPERATION Figure 3-9 Middleby Marshall ALM HEAT 92 S E T P T 2 C b. Press the TEMPERATURE button again to display the 'set point'. If the TEMPERATURE button is not pressed, the display automatically shows the tem- perature set point after 60 seconds. 3. Display Messages a. ALM - The ALM window will display either a “2” o ...
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Middleby Cooking Systems Group PS360/PS360WB - page 52
3-8 SECTION 3 OPERATION Middleby Marshall ALM HEAT 260 S E T P T 1 C Figure 3-10 b. HEAT - The HEAT window will display either a "1" or it will be blank. See Figure 3-10. AA. The "1" signals that the temperature controller is calling for heat and the burner is turned full on. BB. When the HEAT window is blank, the tempera- ture ...
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Middleby Cooking Systems Group PS360/PS360WB - page 53
3-9 SECTION 3 OPERATION Figure 3-11 Middleby Marshall ALM HEAT 92 FAIL SF 2 C c . FAILSF (Failsafe) See Figure 3-11. AA. If the oven does not reach 200°F (93°C) in 15 minutes, the temperature controller will shut off the high flame valve and begin flashing “FAILSF” and “SET PT” alternately. You will also note that the “2” in the ALM w ...
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Middleby Cooking Systems Group PS360/PS360WB - page 54
3-10 SECTION 3 OPERATION C. Shutdown Procedure 1. Turn the blower and heat switches to "0" (off). NOTE: The blowers will remain on, until the oven temperature cools down to 93°C (200°F) at which time they will stop automatically. 2. Turn the conveyor switch to "0" (off), after making certain that there are no products left on ...
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Middleby Cooking Systems Group PS360/PS360WB - page 55
3-11 SECTION 3 OPERATION E. Bake Time vs. Bake Temperature Along with oven temperature, the bake is dependent on the conveyor speed (or 'bake time'); that is, the time it takes the product to pass through the oven. 1. 'Bake time' is actually conveyor speed and is defined as the time the pizza is actually in the oven. This is mea ...
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Middleby Cooking Systems Group PS360/PS360WB - page 56
3-12 SECTION 3 OPERATION F. Conveyor Speed (Bake Time) and Time of Delivery CONVEYOR SPEED (BAKE TIME)- As stated in the previous paragraphs, conveyor speed (bake time) is defined as the amount of time that elapses between the time when the Leading edge of a pizza enters the oven and when the leading edge exits the oven. Conveyor Speed (Bake Time) ...
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Middleby Cooking Systems Group PS360/PS360WB - page 57
4-1 SECTION 4 MAINTENANCE SECTION 4 MAINTENANCE Top Grill Figure 4-1. Oven Cooling Fans -Two on upper oven and two on lower oven CAUTION: DO NOT use any abrasive clean- ing materials or water spray. Wipe clean only . Cleaning with a water hose or pressurized steam cleaning equipment voids the oven warranty. I. MAINTENANCE - DAILY A. Exterior Everyd ...
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Middleby Cooking Systems Group PS360/PS360WB - page 58
4-2 SECTION 4 MAINTENANCE C. Conveyor Belts (Tandem and Double Tandem Ovens only) Everyday, stand at the unloading end of the conveyor with a brush (Figure 4-2, lower oven). Brush all crumbs off the belt so that they fall into the crumb pan below the conveyor. (Figure 4-3 shows crumb pans for both upper and lower ovens.) Figure 4-3. Crumb Pans, Upp ...
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Middleby Cooking Systems Group PS360/PS360WB - page 59
4-3 SECTION 4 MAINTENANCE The crumb pans with cutout holes (and an end shield attached on the inner end) are used at the left end (conveyor motor end) of an upper oven. The shield protects the conveyor motor from heat. The crumb pans without cutout holes are installed on a lower oven. 2. After cleaning, reinstall the crumb pans. E. Window 1. Clean ...
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Middleby Cooking Systems Group PS360/PS360WB - page 60
4-4 SECTION 4 MAINTENANCE II. MAINTENANCE - MONTHLY W ARNING: Before performing any further maintenance, turn the main power switch off. NOTE: The interior may require cleaning more than once a month, depending on the volume of baking. To clean the interior, you must disassemble some parts of the oven. A. Removing conveyor from oven for cleaning 1. ...
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Middleby Cooking Systems Group PS360/PS360WB - page 61
4-5 SECTION 4 MAINTENANCE NOTE: The conveyor assembly of a tandem or a double tandem oven can be removed from either end of oven. If you are removing the conveyor from the end of the oven without the drive motor, the drive sprocket as- sembly must be removed by loosening the 3/32" set screw on the conveyor drive shaft collar. Then, remove the ...
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Middleby Cooking Systems Group PS360/PS360WB - page 62
4-6 SECTION 4 MAINTENANCE Figure 4-8. "Finger Arrangement" Identifiers Figure 4-10. Air Finger Removal Air fingers and blank plates should be marked in the order shown, as viewed from the front of the oven. (The finger arrangement numbers for an upper oven can be pre- ceded with a "U"; example: UB1, UT2, etc.) Record the finger ...
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Middleby Cooking Systems Group PS360/PS360WB - page 63
4-7 SECTION 4 MAINTENANCE Figure 4-11. Outer Plate Disassembly 3. After removing each air finger, place it in an upright position to remove the outer plate . Gently, step on the lip of the finger manifold and pull the outer plate upward to disassemble it, as shown in Figure 4-11. NOTE: The outer plate is stainless steel and may be cleaned by either ...
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Middleby Cooking Systems Group PS360/PS360WB - page 64
4-8 SECTION 4 MAINTENANCE Figure 4-13. Air Finger Parts Figure 4-14. Inner Plate Reassembly Details C. Reassembly and reinstallation of air fingers Each air finger is made up of one inner plate, one outer plate and one finger manifold (Figure 4-13). Be sure to match the 'finger arrangement' identifier markings (T1, T2, etc.) on all the pa ...
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Middleby Cooking Systems Group PS360/PS360WB - page 65
4-9 SECTION 4 MAINTENANCE 4. Ensure that the air fingers and blank plates fit tightly together in the channel with edges interlocked and no space between edges, as shown in Figure 4-15. Figure 4-15. Air Finger Rein- stallation Details Top Finger Tab on Outer Plate of Finger (Located in Channel) Incorrect, Too Much Space Blank Plate Incorrect, Too M ...
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Middleby Cooking Systems Group PS360/PS360WB - page 66
4-10 SECTION 4 MAINTENANCE Figure 4-16. Checking Conveyor Belt Tension Figure 4-17. Conveyor Belt Master Links Master Links D. Checking conveyor belt tension WARNING: Oven conveyor belt must be cool for adjusting tension. DO NOT adjust belt when HOT. 1. Check the belt tension by lifting the conveyor belt (Figure 4-16). (The conveyor assembly can ei ...
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Middleby Cooking Systems Group PS360/PS360WB - page 67
4-11 SECTION 4 MAINTENANCE Master Link Figure 4-18. Unhooking the Master Links Figure 4-19. Entire Link Removal Correct Position Incorrect Position Figure 4-20. Master Link Positions 2. Unhook the master links at the end of conveyor belt, using long-nosed pliers, as shown in Figure 4-18. 3. Unhook the complete belt link to be removed and slide it o ...
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Middleby Cooking Systems Group PS360/PS360WB - page 68
4-12 SECTION 4 MAINTENANCE Direction of Travel Figure 4-21. Outer Master Link Connection Figure 4-22. Right-edge Outer Master Link Position 5. Reconnect the outer master links, as shown in Figure 4-21. IMPORTANT NOTICE: The outer master links have right and left sides to them. The right-edge master link has an open hook facing you, as shown in Figu ...
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Middleby Cooking Systems Group PS360/PS360WB - page 69
4-13 SECTION 4 MAINTENANCE II. MAINTENANCE - EVERY 3 MONTHS W ARNING: All electric power must be shut off before beginning this maintenance procedure. NOTE: It is recommended that an authorized Middleby Marshall service agent should perform the 3-month and 6-month maintenance procedures. A. Cleaning the blower motors (See Figure 4-23.) Remove the e ...
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Middleby Cooking Systems Group PS360/PS360WB - page 70
4-14 SECTION 4 MAINTENANCE IV. MAINTENANCE - EVERY 6 MONTHS W ARNING: All electric power must be shut off before beginning this maintenance procedure. NOTE: It is recommended that an authorized Middleby Marshall service agent should perform the 3-month and 6-month maintenance procedures. A. Check the brushes of the conveyor drive motor; when worn t ...
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Middleby Cooking Systems Group PS360/PS360WB - page 71
5-1 SECTION 5 TROUBLESHOOTING SECTION 5 TROUBLESHOOTING PROBLEM: PRODUCTS OVERCOOKED OR UNDERCOOKED Check for correct setting of conveyor speed control. Set conveyor speed control at correct setting. Check set tempera- ture on temperature controller of each oven section. Refer to OPERATION Section for procedure to set temperatures correctly. If pro ...
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Middleby Cooking Systems Group PS360/PS360WB - page 72
5-2 SECTION 5 TROUBLESHOOTING PROBLEM: CONVEYOR WILL NOT HOLD PROPER SPEED OR WILL NOT RUN AT ALL Check if conveyor is jammed on something in oven. Check for proper tension of conveyor drive chain and conveyor belt. Refer to MAINTE- NANCE Section for checking procedure. If conveyor still will not run, call your local Middleby Marshall Authorized Se ...
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Middleby Cooking Systems Group PS360/PS360WB - page 73
5-3 SECTION 5 TROUBLESHOOTING PROBLEM: OVEN SECTION(S) WILL NOT TURN ON WHEN THE SWITCHES ARE TURNED ON Check if wall circuit breakers are turned on. If oven section(s) still will not respond, call your local Middleby Marshall Authorized Service Agent. PROBLEM: BLOWER MOTORS RUNNING BUT LITTLE OR NO AIR AT FINGERS Fingers assembled incorrectly afte ...
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Middleby Cooking Systems Group PS360/PS360WB - page 74
5-4 SECTION 5 TROUBLESHOOTING NOTES: ...
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Middleby Cooking Systems Group PS360/PS360WB - page 75
SECTION 7 ELECTRICAL SCHEMATICS 6-1 SECTION 6 ELECTRICAL SCHEMATICS ...
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Middleby Cooking Systems Group PS360/PS360WB - page 76
Electrical Wiring Diagram: PS360/360WB Tandem and Double Tandem Ovens 6-2 SECTION 6 ELECTRICAL SCHEMATICS ...
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Middleby Cooking Systems Group PS360/PS360WB - page 77
Electrical Wiring Diagram: PS360/360WB Tri Tandem and Quad Tandem Ovens 6-3 SECTION 6 ELECTRICAL SCHEMATICS ...
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Middleby Cooking Systems Group PS360/PS360WB - page 78
Electrical Schematic: PS360/360WB Tandem Ovens (all versions) 6-4 SECTION 6 ELECTRICAL SCHEMATICS ...
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Middleby Cooking Systems Group PS360/PS360WB - page 79
NOTES: 6-5 SECTION 6 ELECTRICAL SCHEMATICS ...
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Middleby Cooking Systems Group PS360/PS360WB - page 80
Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin, IL 60120 (847)741-3300 FAX (847)741-4406 Middleby Corp 24-Hour Service Hotline 1-800-238-8444 www.middleby.com A MIDDLEBY COMPANY ...
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