Middleby Marshall PS528 (Double Owner's Operating & Installation Manual
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Middleby Marshall PS528 (Double Owner's Operating & Installation Manual

Ps528-series ovens
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PS528-Series Electric Ovens: English
A MIDDLEBY COMPANY
owner's
operating
& installation
manual
PS528-Series OVENS
PS528 (Single)
Model PS528E
PS528 (Triple)
PS528 (Double)
Part No. 63934 Rev B
Inc.
©2009 Middleby Marshall
Price $30.00
P: 08/09

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Summary of Contents for Middleby Marshall PS528 (Double

  • Page 1 PS528-Series Electric Ovens: English A MIDDLEBY COMPANY owner's operating & installation manual PS528-Series OVENS PS528 (Single) Model PS528E PS528 (Triple) PS528 (Double) Part No. 63934 Rev B Inc. ©2009 Middleby Marshall Price $30.00 P: 08/09...
  • Page 2 Contact your authorized Service Agency to perform maintenance and repairs. A Service Agency Directory is supplied with your oven. NOTICE Using any parts other than genuine Middleby Marshall factory-manufactured parts relieves the manufacturer of all warranty and liability. NOTICE Middleby Marshall (Manufacturer) reserves the right to change specifications at any time.
  • Page 3 © 2009 - 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...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS (Continued) Page Page SECTION 1 IV. NORMAL OPERATION - STEP-BY-STEP ...... 20 I. MODEL IDENTIFICATION ..........1 A.Daily Startup Procedure ..........20 SERIES PS528 ELECTRICAL SPECIFICATIONS ....2 B. Daily Shutdown Procedure ........20 II. COMPONENT FUNCTION ..........4 V.

  • Page 5: Model Identification

    DESCRIPTION SECTION 1 DESCRIPTION I. MODEL IDENTIFICATION The Middleby Marshall PS528-Series may be used either as a single oven or stacked for use as double or triple ovens. A single PS528-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.

  • Page 6: Series Ps528 Electrical Specifications

    SECTION 1 DESCRIPTION PS528 SERIES OVEN SPECIFICATIONS Conveyor Belt Width 18.00" (457mm) Heating Zone Length 28.00" (711mm) Baking Area Square Feet 3.5 sq. ft. (0.33 sq. m.) Overall Dimension Standard Single Oven w/Legs 50.00" (1270mm) L × 40.75" (1035mm) W × 21.72"...
  • Page 7 SECTION 1 DESCRIPTION Figure 1-4. PS528-Series Oven Components Locations...

  • Page 8: Component Function

    SECTION 1 DESCRIPTION II. COMPONENT FUNCTION (Figure 1-4) II. COMPONENT FUNCTION A. Conveyor Motor and Conveyor Belt The conveyor belt is driven by a variable-speed electric motor (Figure 1-5) operating through a gear reducer. The motor speed is controlled by a digital control.
  • Page 9 SECTION 1 DESCRIPTION Figure 1-6. Cooling Fan...
  • Page 10 SECTION 1 DESCRIPTION F2. Blank Plates 1. Blank Plates- The Blank Plates are available to install on the plenum where an air finger is not required. Figure 1-7. Blank Plates (two sizes) and an Air Finger.

  • Page 11: Unloading

    NOTE: The oven, when installed, must be electrically I. UNLOADING grounded in accordance with local codes, or in the absence Your Middleby Marshall PS528-Series Oven is shipped of local codes, with the National Electrical Code (NEC), partially assembled. It will arrive in a carton on a crate.

  • Page 12: Ps528 Oven Installation Required Kits And Equipment

    SECTION 2 INSTALLATION PARTS LIST FOR SERIES PS528 ELECTRIC OVEN INSTALLATION KIT Single and Double Stack Ovens P/N 63938 ITEM PART NO. DESCRIPTION 3101908 LEG 4″ AD FT 62208 INSULATION BOTTOM TRAY 62206 BOTTOM TRAY WELDMENT 61650 TOP COVER 51387 SCREW MSSLT THREAD 8-32 ×...
  • Page 13 SECTION 2 INSTALLATION Figure 2-5. MODEL PS528 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 PS528 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 SECTION 2 INSTALLATION Figure 2-7. MODEL 528 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.

  • Page 16: Utility Rough-In Dimensions And Positioning For Ps528-Series Ovens

    240V II. VENTILATION GUIDELINES lement hase A mechanically driven ventilation system is recommended for the PS528 Series Middleby Marshall conveyorized electric 208/240 208/240 208/240 208/240 208/240 208/240 208/240 irCuit ovens. Local codes and conditions vary greatly from one area to...

  • Page 17: Electrical Connection Information For Ps528-Series Ovens

    SECTION 2 INSTALLATION A fused disconnect switch or a main circuit breaker These ‘C’ Channel brackets are installed in the vertical plane using existing screws (Item 6) to support these ‘C’ (customer furnished) MUST be installed in the electric Channels using the upper and lower Key Hole openings in supply line 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. PS528-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

    SECTION 3 OPERATION II. COMPONENT INFORMATION AND main blower will continue to run after the blower switch is turned to the “OFF” or “O” position. LOCATION (Figures 3-1 and 3-2) C. Heat Switch A. Door Safety Switch Turning the HEAT switch to “ON” or “I” will energize the The Door Safety Switch is located at the lower right side electric heating system.

  • Page 21: Conveyor

    SECTION 3 OPERATION E. Conveyor The on-off switch for the conveyor motor is on the con- trol panel. Also on the control panel is the digital con- veyor speed control. The digital control can be adjusted from 1-10 min. bake time (conveyor speed). Refer to Figure 3-3.

  • Page 22: Step-By-Step Operation

    SECTION 3 OPERATION 4. Set the temperature controller to the desired baking WARNING temperature. OVEN MUST BE KEPT CLEAR OF NOTE: For complete temperature controller operation COMBUSTIBLES AT ALL TIMES. instructions refer to Step C. 5. Turn the HEAT switch (Figure 3-6) to the “ON” or “I” III.
  • Page 23 SECTION 3 OPERATION Figure 3-6. Control Panel...

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

    SECTION 3 OPERATION IV. NORMAL OPERATION - STEP-BY-STEP Wait for the oven to heat to the setpoint temperature. Higher setpoint temperatures will require a longer wait. A.Daily Startup Procedure The oven can reach a temperature of 500°F (232°C) in approximately 15 minutes. Check that the circuit breaker/fused disconnect is in the on position.
  • Page 25 SECTION 3 OPERATION Display "HEAT ON" Light Shows the Set Point Lights when the burner is in or the Actual Tem- perature in degrees operation. Fahrenheit (F) or Celsius (C). "SP LOCK" Light Lights when the set "SET PT" (set- point is locked out from changes.

  • Page 26: Quick Reference: Troubleshooting

    Check that the set temperature and bake time settings are cooked or undercooked. incorrectly. correct. 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.

  • Page 27: Section 4 Maintenance

    SECTION 4 MAINTENANCE SECTION 4 MAINTENANCE WARNING Possibility of injury from rotating parts and electrical shock exist in this oven. Turn off and lockout or tagout electrical supply to oven(s) before attempting to disas- semble, clean or service oven(s). Never disassemble or clean the oven with the blower switch or any other part of the oven turned on.

  • Page 28: Maintenance - Daily

    SECTION 4 MAINTENANCE I. MAINTENANCE - DAILY D. Crumb Pans (Figure 4-2) A. Exterior WARNING Everyday you should clean the outside of the oven with a soft cloth and mild detergent. Crumb pan is extremely hot while oven is operating. Allow oven to cool before removing crumb pan.

  • Page 29: Maintenance - Monthly

    II. MAINTENANCE - MONTHLY You can order non-caustic cleaner from your local autho- NOTE: The oven interior may require cleaning more rized Middleby Marshall Parts Distributor in the quantities than once a month depending on the volume of bak- listed below: ing.

  • Page 30: Air Fingers Disassembly For Cleaning

    SECTION 4 MAINTENANCE 5. Lift other side of conveyor and push toward other side. 6. Remove conveyor as shown. Figure 4-6. Figure 4-4. Figure 4-5. Figure 4-7. CAUTION Be careful not to bump the drive sprocket while handling the conveyor, to avoid damaging the drive shaft.
  • Page 31 SECTION 4 MAINTENANCE 1. As the air fingers are removed use a felt pen to mark all parts of the fingers. This includes the finger manifold, inner plate and the outer plate (refer to Figure 1-9). If a blank or choke plate is used, mark that plate also. Fingers are marked in the order shown;...

  • Page 32: Reassembly Of Air Fingers

    SECTION 4 MAINTENANCE C. Reassembly of Air Fingers 6. To remove the inner plate, pull the plate out and then up 1. Air fingers are made up of one inner plate, one outer plate and the finger housing manifold. Be sure to match up the markings (T1, T2, T3, etc.) on all the parts of the air fingers as you are reassembling.
  • Page 33 SECTION 4 MAINTENANCE 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. Incorrect - Too Top Finger Much Space Blank Plate Tab on Outer Plate of Finger Located in Groove Incorrect - Too Top Finger Much Space Blank Plate Tab on Outer Plate of Finger...

  • 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

    SECTION 4 MAINTENANCE E. Conveyor Reassembly Into Oven F. Checking Conveyor Belt Tension 1. Lift conveyor and position it in oven as shown. WARNING NOTE: Conveyor may be inserted into either end of oven. Oven conveyor belt must be cool when adjusting If it is to be installed from the non-drive end of the oven belt.

  • Page 37: Conveyor Belt Link Removal

    SECTION 4 MAINTENANCE G. Conveyor Belt Link Removal 4. Unhook the link to be removed. 1. Using long nose pliers, an entire link can be removed 5. Pull up on the belt link section and remove. Do not with the conveyor assembly either in or out of the oven. discard the link removed as it may be used for making Position master links at end of conveyor as shown in spare master links.

  • Page 38: Attaching Drive Chain

    SECTION 4 MAINTENANCE 6. Reconnect the inside master links (Figure 4-29.) 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. Once in place tighten 3/32″...

  • Page 39: Maintenance - Every 3 Months

    A. Check brushes on D.C. conveyor motor, when worn to less than 1/10″ (2.4mm), replace the brushes. NOTE: It is recommended that the 3-month maintenance be performed by an authorized Middleby Marshall B. Check your oven venting system. technician. IMPORTANT NOTICES: •...

  • Page 40: Ps528-Series Electric Oven Key Spare Parts

    (Figure 4-36). (The kit can be purchased when the oven duction, if a failure occurs. is ordered, or later, from a Middleby Marshall Authorized Replacement parts for this kit can be purchased from your Parts Distributor). The kit contains many of the crucial Middleby Marshall Authorized Parts Distributor.

  • Page 41: Section 5 Troubleshooting

    Turn temperature Start the oven again. If the oven still does not Set the conveyor speed control to correct control at correct setting. heat, call your Middleby Marshall Service Agency. setting. Verify the food PROBLEM: preparation process. CONVEYOR WILL NOT HOLD PROPER SPEED...
  • Page 42 SECTION 5 TROUBLESHOOTING NOTES...
  • Page 43 SECTION 6 PARTS LIST SECTION 6 - PARTS LIST...
  • Page 44 SECTION 6 PARTS LIST...

  • Page 45: Section 6 - Parts List

    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, E208-240V 50/60/3, Ps528

    SECTION 7 ELECTRICAL SCHEMATICS...

  • Page 57: Wiring Diagram, E380-480V 50/60/3, Ps528

    SECTION 7 ELECTRICAL SCHEMATICS...

  • Page 58: Wiring Diagram, E380V 50/60/3, Ce Ps528

    SECTION 7 ELECTRICAL SCHEMATICS...
  • Page 59 SECTION 7 ELECTRICAL SCHEMATICS NOTES...
  • Page 60 NOTICE 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:

Ps528 (singlePs528 (triplePs528 seriesPs528e

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