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PS724-Series Electric Ovens: English
October 27, 2008
Middleby Middleby Middleby Middleby Middleby
®
Marshall Marshall
Marshall Marshall Marshall
A MIDDLEBY COMPANY
owner's
operating
& installation
manual
PS724-Series OVENS
Model PS724E
PS724 (Double)
PS724 (Single) PS724 (Triple)
Part No. 61778
©2008 Middleby Marshall Inc.
Price $30.00
P: 10/08
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NOTICE: This Owner's 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. It is suggested to obtain a service contract with a Middleby Marshall Authorized Service Agent. WARNING FOR YOUR SAFETY, DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. WARNING
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Model No. Serial No. Installation Date Modéle No. Serié No. Date d'installation MIDDLEBY MARSHALL MIDDLEBY MARSHALL INC. NO QUIBBLE LIMITED WARRANTY OVEN LIMITED WARRANTY (U.S.A. ONLY) (Non U.S.A.) The Seller warrants equipment manufactured by it to be free from defects in material and workmanship for which it is responsible. The MIDDLEBY MARSHALL, HEREINAFTER REFERRED TO AS Seller’s obligation under this warranty shall be limited to replacing or “THE SELLER”, WARRANTS EQUIPMENT MANUFACTURED rep
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TABLE OF CONTENTS TABLE OF CONTENTS (Continued) Page Page SECTION 1 I. MODEL IDENTIFICATION .............................................. 1 III. STEP-BY-STEP OPERATION ..................................... 18 SERIES PS724 ELECTRIC SPECIFICATIONS ................. 2 A. Startup Procedures ................................................. 18 II. COMPONENT FUNCTION ............................................. 4 Daily Startup ................................................................. 18 A.
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SECTION 1 DESCRIPTION SECTION 1 DESCRIPTION I. MODEL IDENTIFICATION The Middleby Marshall PS724-Series may be used either as a single oven or stacked for use as double or triple ovens. A single PS724-Series Oven (Figure 1-1) can be mounted on an insulated base with short legs for countertop use, or on a leg stand with a lower shelf and casters for a free standing unit. A double oven (Figure 1-2) consists of two, stacked, single ovens. A triple oven (Figure 1-3) consists of three stacked single
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SECTION 1 DESCRIPTION PS724 SERIES OVEN SPECIFICATIONS Conveyor Belt Width 18.00″ (457 mm) Heating Zone Length 24.00″ (610 mm) 2 Baking Area Square Feet 3.0 sq. ft. (0.28 m ) Overall Dimension – Standard Single Oven w/Legs - 8″ Exit tray Installed 64.00″ (1625 mm) L × 36.00″ (914 mm) W × 43.69″ (1110 mm) H × Overall Dimension – Double Oven 64.00″ (1625 mm) L × 36.00″ (914 mm) W × 64.00″ (1625 mm) H × Overall Dimension – Triple Oven 64.00″ (1626 mm) L × 36.00″ (914 mm) W × 69.25″ (1759 mm) H × We
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SECTION 1 DESCRIPTION Figure 1-4. PS724-Series Oven Components Locations 3
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SECTION 1 DESCRIPTION II. COMPONENT FUNCTION (Figure 1-4) 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. The stainless-steel wire belt can travel in either direction at variable rates ranging from 30 seconds to 12 minutes; this is the time that a product can take to pass through the oven. B. Blower Fan The circulation air blower drive motors
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SECTION 1 DESCRIPTION Figure 1-6. Cooling Fan 5
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SECTION 1 DESCRIPTION Outer Plate Finger Manifold Assembly Inner Plate Baffle Figure 1-7. Air Finger. 6
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SECTION 2 INSTALLATION SECTION 2 INSTALLATION WARNING The oven must be installed on an even (level) non-flammable flooring and any adjacent walls must be non-flammable. Recommended minimum clearances are specified in the Description section of this Manual. 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. Constructional changes to the area where the oven is installed shall not affect the air s
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SECTION 2 INSTALLATION NOTE: The oven, when installed, must be electrically I. UNLOADING grounded in accordance with local codes, or in the ab- Your Middleby Marshall PS724-Series Oven is shipped sence of local codes, with the National Electrical Code partially assembled. It will arrive in a carton on a crate. (NEC), or ANSI/NFPA70. Carton size for a PS724-Series Oven is: 56.3″ (1422 mm) Long × NOTE There must be adequate clearance between 41″ (1041 mm) Wide × the oven and any adjacent combusti
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SECTION 2 INSTALLATION 1 2 11 7 3 6 13 8, 9, 10 12 14 5 4 Qty. Qty. Qty. Inc. with Inc. with Single Double Triple domestic CE Item Oven Oven Oven Part No. ovens? ovens? Description 1 1 1 1 61243 Yes Yes Base pad 2 2 2 2 59835 Yes Yes Top panel 3 4 4 -- 37900-0024 Yes Yes 15″ (381mm) leg extension, for single and double ovens 4 2 2 2 22290-0009 Yes Yes Caster, with flat plate and brake 5 2 2 2 22290-0010 Yes Yes Caster, with flat pla
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SECTION 2 INSTALLATION 10 Figure 2-5. MODEL PS724 SINGLE OVEN DIMENSIONS
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SECTION 2 INSTALLATION 11 Figure 2-6. MODEL PS724 DOUBLE OVEN DIMENSIONS
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SECTION 2 INSTALLATION 12 Figure 2-7. MODEL PS724 TRIPLE OVEN DIMENSIONS
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SECTION 2 INSTALLATION UTILITY ROUGH-IN DIMENSIONS AND POSITIONING FOR PS724-SERIES OVENS WARNING DO NOT USE CONDUIT FOR GROUND CONNECTION. CAUTION IT IS RECOMMENDED THAT THE OVEN BE PLACED UNDER A VENTILATION HOOD FOR ADEQUATE AIR SUPPLY AND VENTILATION. ELECTRIC SUPPLY TO BE PROVIDED BY CUSTOMER Suggested dimensions are shown; utility code requirements supersede any factors shown. CIRCUIT BREAKER Figure 2-9. Typical PS724-Series Oven(s) A seperate circuit break
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SECTION 2 INSTALLATION III. ELECTRICAL CONNECTION INFORMATION IV. ELECTRIC SUPPLY FOR PS724-SERIES OVENS. Electrical connection is made through a cord and plug. A cord, plug and strain relief is supplied for Domestic oven models, only. International ovens must supply, WARNING See Electrical Specifications chart on page 2. Authorized supplier personnel normally ac- The supply conductors must be of the size and complish the connections for the ventilation material (copper) recommended to provide t
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SECTION 3 OPERATION SECTION 3 OPERATION I. CONTROL FUNCTIONS Figure 3-1. PS724-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” or “I”. Turn “OFF” or “O” and lockout or tagout all electric power to the oven before attempting to clean or service this oven. 15
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SECTION 3 OPERATION bearing damage. To protect the blower motor and II. COMPONENT INFORMATION AND bearings a thermostatic override is built into the oven. LOCATION (Figures 3-1 and 3-2) If the temperature inside the oven is over 180°F (82°C) A. Door Safety Switch the main blower will continue to run after the blower switch is turned to the “OFF” or “O” position. The Door Safety Switch is located at the lower right side of control panel opening. Opening the control panel door C. Heat / Conveyor
