Middleby Marshall PS520 Owner's Operating And Installation Manual
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Middleby Marshall PS520 Owner's Operating And Installation Manual

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A MIDDLEBY COMPANY
owner's
operating
& installation
manual
PS520-Series OVENS
Model PS520E
PS520 (Double)
©2003 Middleby Marshall
®
Inc.
PS520-Series Electric Ovens: English
PS520 (Single)
PS520 (Triple)
Part No. 52358
Price $30.00
P: 08/08 Rev. B

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Summary of Contents for Middleby Marshall PS520

  • Page 1 Marshall Marshall Marshall Marshall A MIDDLEBY COMPANY owner's operating & installation manual PS520-Series OVENS Model PS520E PS520 (Double) Inc. ©2003 Middleby Marshall ® PS520-Series Electric Ovens: English PS520 (Single) PS520 (Triple) Part No. 52358 Price $30.00 P: 08/08 Rev. B...
  • Page 2 Contact your authorized Service Agency to perform maintenance and repairs. A Service Agency Directory is supplied with your oven. Using any parts other than genuine Middleby Marshall factory-manufactured parts relieves the manufacturer of all warranty and liability. Middleby Marshall (Manufacturer) reserves the right to change specifications at any time.
  • Page 3 © 2003 - Middleby Marshall, A Middleby Company. The Middleby Marshall logo is a registered trademark of Middleby Marshall, A Middleby Company. Middleby Marshall Inc. • 1400 Toastmaster Drive • Elgin, Illinois 60120-9272 U.S.A. • (847) 741-3300 • FAX: (847) 741 4406 Serial No.

  • Page 4: Table Of Contents

    SECTION 2 I. UNLOADING ... 7 PS520 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT ... 8 PARTS LIST FOR SERIES PS520 ELECTRIC OVEN INSTALLATION KIT ... 8 UTILITY ROUGH-IN DIMENSIONS AND POSITIONING FOR PS520-SERIES OVENS ... 12 CIRCUIT BREAKER ... 12 ELECTRICAL SPECIFICATIONS ...

  • Page 5: Model Identification

    A single PS520-Series Oven (Figure 1-1) is mounted on a base pad with legs. A double oven (Figure 1-2) consists of two, stacked, single ovens. A triple oven (Figure 1-3) consists of three stacked single ovens.

  • Page 6: Series Ps520 Electrical Specifications

    SECTION 1 DESCRIPTION PS520 SERIES OVEN SPECIFICATIONS Conveyor Belt Width Heating Zone Length Baking Area Square Feet Overall Dimension Standard Single Oven w/Legs Overall Dimension Double Oven Overall Dimension Triple Oven Weight of Single Oven Shipping Weight Shipping Cube Operating Range...
  • Page 7 SECTION 1 DESCRIPTION Figure 1-4. PS520-Series Oven Components Locations...

  • Page 8: Component Function

    B. Blower Fan The blower fans are located at the rear of the oven. These blowers force heated air through the air fingers. The BLOWER switch must be set to “ON” or “I” for oven warmup and baking.
  • Page 9 SECTION 1 DESCRIPTION Figure 1-6. Cooling Fan...
  • Page 10 SECTION 1 DESCRIPTION Half Blank Plate Outer Plate Inner Plate Blank Plate Finger Manifold Assembly Figure 1-7. Blank Plates (two sizes) and an Air Finger. F2. Blank Plates 1. Blank Plates- The Blank Plates are available to install on the plenum where an air finger is not required. Baffle...

  • Page 11: Section 2 I. Unloading

    SECTION 2 INSTALLATION I. UNLOADING Your Middleby Marshall PS520-Series Oven is shipped partially assembled. It will arrive in a carton on a crate. Carton size for a PS520-Series Oven is: 44-1/4″ (1124mm) Long ×...

  • Page 12: Ps520 Oven Installation Required Kits And Equipment

    SECTION 2 INSTALLATION PARTS LIST FOR SERIES PS520 ELECTRIC OVEN ITEM PARTS LIST FOR SERIES PS520 ELECTRIC OVEN ITEM Figure 2-1. PS520-Series Electric Oven Installation Parts INSTALLATION KIT Single and Double Stack Ovens P/N 48397 PART NO. DESCRIPTION 3101908 LEG 4″ AD FT...
  • Page 13 SECTION 2 INSTALLATION Figure 2-5. MODEL PS520 SINGLE OVEN DIMENSIONS The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments.
  • Page 14 SECTION 2 INSTALLATION Figure 2-6. MODEL PS520 DOUBLE OVEN DIMENSIONS The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments.
  • Page 15 Figure 2-7. MODEL 520 TRIPLE OVEN DIMENSIONS The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments. SECTION 2 INSTALLATION...

  • Page 16: Utility Rough-In Dimensions And Positioning For Ps520-Series Ovens

    STALLED OR WARRANTY WILL BE VOID. II. VENTILATION GUIDELINES A mechanically driven ventilation system is recommended for the PS520 Series Middleby Marshall conveyorized electric ovens. Local codes and conditions vary greatly from one area to another and must be complied with. Following are the suggested requirements for good ventilation.

  • Page 17: Electrical Connection Information For Ps520-Series Ovens

    PS520-Series Oven ranges from a minimum of 17.3 amperes to a maximum of 39.9 amperes. Typical specifications for each PS520-Series Oven are 208V or 240V, 1-phase, 3-wire, 8.3kW; this oven requires 50-ampere service. A PS520-Series Double Oven (Figure 1-2) installation would require two 50-ampere service connections, one for each oven;...
  • Page 18 SECTION 2 INSTALLATION NOTES...

  • Page 19: Control Functions

    SECTION 3 OPERATION SECTION 3 OPERATION I. CONTROL FUNCTIONS Figure 3-1. PS520-Series Oven Control Functions WARNING A possibility of injury from rotating parts and electric shock exists in this oven. Never disassemble or clean the oven with the BLOWER switch or any other oven control turned “ON”...

  • Page 20: Component Information And Location

    The temperature controller continuously monitors the oven temperature and turns on the modulating solid state relay controller. The heat is on for the time required to maintain a constant oven temperature. The temperature controller contains a low-limit switch which allows the oven to cool down to 200°F (93°C) before...

  • Page 21: Conveyor

    This should be the conveyor speed shown on the conveyor speed digital control. NOTE: In Figures 3-4 and 3-5, the oven shown is with the conveyor running right to left. WARNING Possibility of injury from rotating parts and electrical shock exist in this oven.

  • Page 22: Step-By-Step Operation

    “ON” or “I”. The cooling fans cool the control components and blower motor. The cooling fans, located at the rear of the oven blows air into and through the cabinet. Air is exhausted through the front of the cabinet and also out the front of the oven.
  • Page 23 SECTION 3 OPERATION Figure 3-6. Control Panel...

  • Page 24: Normal Operation - Step-By-Step

    This al- lows you to monitor the oven temperature as it rises to the setpoint. Allow the oven to preheat for 10 minutes after it has reached the set point temperature. DAILY SHUTDOWN PROCEDURE Turn the "HEAT" ( ) and "BLOWER"...
  • Page 25 Lights when the set point is locked out from changes. This setting can only be changed by service personnel. OVERTEMP Light Lights when the oven temperature is greater than 650°F (343°C). Refer to Quick Reference: Troubleshooting in this section. Temperature...

  • Page 26: Quick Reference: Troubleshooting

    Controls may be set incor- overcooked or rectly. undercooked. IF THESE STEPS FAIL TO RESOLVE THE PROBLEM, CONTACT YOUR LOCAL MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENT. A SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN. PROBLEM • Follow the procedures under Daily Shutdown Procedures in this section to shut down the oven.

  • Page 27: Section 4 Maintenance

    If the oven is to be removed from its installed location for servicing, perform the following procedure: 1. Switch off the oven and allow it to cool. Do NOT service the oven while it is warm. 2. Turn off main circuit breakers and disconnect connector from oven.

  • Page 28: Maintenance - Daily

    Allow oven to cool before removing crumb pan. When the oven is cool remove and clean the crumb pan at each end of the oven. Each crumb pan can be removed by sliding it out, as shown in Figure 4-2. Reinstall the crumb pans after cleaning.

  • Page 29: Maintenance - Monthly

    To clean the interior, you have to disassemble some parts of the oven. When cleaning your Series PS520 Oven note the following: PRECAUTIONS- 1. Do not use excessive water or saturation of oven insulation will occur.

  • Page 30: Air Fingers Disassembly For Cleaning

    SECTION 4 MAINTENANCE Figure 4-4. Figure 4-5. 5. Lift other side of conveyor and push toward other side. 6. Remove conveyor as shown. Figure 4-6. Figure 4-7. CAUTION Be careful not to bump the drive sprocket while handling the conveyor, to avoid damaging the drive shaft.
  • Page 31 Fingers are marked in the order shown; as viewed from the front of the oven. (The marks for an upper oven should be preceded with a “U”, example UB1, UT2, etc.) Standard Fingers 2.

  • Page 32: Reassembly Of Air Fingers

    SECTION 4 MAINTENANCE 6. To remove the inner plate, pull the plate out and then up. Figure 4-11. 7. The outer finger plate is stainless and may be cleaned by either soaking in a hot, strong detergent solution or using a caustic cleaner. The conveyor belt can also be cleaned in the same way.
  • Page 33 4. Replace the air fingers by pushing in at the back side. Remember to replace them according to the numbers marked on them when they were removed. They must go back in the same way they came out. IMPORTANT: When inserting fingers the tab on the outer plate must be in the groove as shown in Figure 4-18.
  • Page 34 SECTION 4 MAINTENANCE 5. Install fingers and blank plates correctly with edges interlocked and no space between edges. Top Finger Tab on Outer Plate of Finger Located in Groove Top Finger Tab on Outer Plate of Finger Located in Groove Top Finger Tab on Outer Plate of Finger Located in Groove...

  • Page 35: Reinstall End Plugs

    SECTION 4 MAINTENANCE D. Reinstall End Plugs 1. Reinstall lower end plug. Be sure to tighten the wing screw on the end plug. 2. Reinstall conveyor. 3. Reinstall upper end plug. Be sure to tighten two wing screws on the end plug. Figure 4-19.

  • Page 36: Conveyor Reassembly Into Oven

    1. Lift conveyor and position it in oven as shown. NOTE: Conveyor may be inserted into either end of oven. If it is to be installed from the non-drive end of the oven the drive sprocket assembly must be removed as shown in conveyor disassembly section.

  • Page 37: Conveyor Belt Link Removal

    G. Conveyor Belt Link Removal 1. Using long nose pliers, an entire link can be removed with the conveyor assembly either in or out of the oven. Position master links at end of conveyor as shown in Figure 4-24. Master Links Figure 4-24.

  • Page 38: Attaching Drive Chain

    Direction of travel Figure 4-30. 7. Reconnect the outside master links. 8. Replace all parts removed from the oven. Figure 4-31. H. Attaching Drive Chain 1. If drive sprocket assembly was removed reassemble it into the conveyor drive shaft. Be sure flat on end of drive shaft aligns with set screw in conveyor shaft collar.

  • Page 39: Maintenance - Every 3 Months

    Shut OFF all electrical power and lock/tag out the switch before attempting maintenance work. NOTE: It is recommended that the 3-month mainte- nance be performed by an authorized Middleby Marshall technician. A. Electrical Terminals Open the control cabinet door by removing the three screws from the control cabinet door.

  • Page 40: Key Spare Parts Kit

    2) High limit is located on the exit end of the unit on the top, 3) High limit on the PS520 is 600 degree's. parts that can reduce serious downtime and loss of production, if a failure occurs.

  • Page 41: Section 5 Troubleshooting

    OVEN BLOWER AND CONVEYOR OPER- ATE, YET THE OVEN IS NOT HEATING Start the oven again. If the oven still does not heat, call your Middleby Marshall Service Agency. setting. CONVEYOR WILL NOT HOLD PROPER SPEED OR WILL NOT RUN AT ALL Check for proper tension of conveyor drive chain and conveyor belt.
  • Page 42 SECTION 5 TROUBLESHOOTING NOTES...

  • Page 43: Section 6 - Parts List

    SECTION 6 PARTS LIST SECTION 6 - PARTS LIST...
  • Page 44 SECTION 6 PARTS LIST...

  • Page 45: Single Oven Exploded View

    SECTION 6 PARTS LIST...
  • Page 46 SECTION 6 PARTS LIST...

  • Page 47: Relay Panel

    SECTION 6 PARTS LIST...
  • Page 48 SECTION 6 PARTS LIST...

  • Page 49: Blower Assembly

    SECTION 6 PARTS LIST...
  • Page 50 SECTION 6 PARTS LIST...

  • Page 51: Control Panel

    SECTION 6 PARTS LIST...
  • Page 52 SECTION 6 PARTS LIST...

  • Page 53: Single Conveyor

    SECTION 6 PARTS LIST...
  • Page 54 SECTION 6 PARTS LIST NOTES...

  • Page 55: Section 7 Electrical Schematics

    SECTION 7 ELECTRICAL SCHEMATICS SECTION 7 ELECTRICAL SCHEMATICS...

  • Page 56: Wiring Diagram, E380-480V 50/60/1, Ps520

    SECTION 7 ELECTRICAL SCHEMATICS...

  • Page 57: Wiring Diagram, E230-240V Ce Ps520/1820S

    SECTION 7 ELECTRICAL SCHEMATICS...

  • Page 58: Wiring Diagram, E380-400V Ce Ps520/1820S

    SECTION 7 ELECTRICAL SCHEMATICS...
  • Page 59 SECTION 7 ELECTRICAL SCHEMATICS NOTES...
  • Page 60 During the warranty period, ALL parts replacement and servicing should be performed by your Middleby Marshall Authorized Service Agent. Service that is performed by parties other than your Middleby Marshall Authorized Service Agent may void your warranty.

This manual is also suitable for:

Ps520ePs520 seriesPs520e-2Ps520e-1Ps520e-3

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