PS740 Series Gas Domestic & Std. Export ENGLISH P/N 60250 September 28, 2012 PS740 Series Gas Ovens Model: • PS740G Gas Combinations: • • • Single Oven Double Oven (Two-Stack) Triple Oven (Three-Stack) OWNER'S OPERATING AND INSTALLATION MANUAL for domestic and standard export ovens ©2012 Middleby Marshall Inc. is a registered trademark of Middleby Marshall, Inc. All rights reserved.
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. Ovens are shipped from the factory configured for use with natural gas. If permitted by local, national and international codes, at the time of installation the oven may be converted to propane gas operation.
Model No. Modéle No. Serial No. Serié No. Installation Date Date d'installation MIDDLEBY MARSHALL No Quibble Limited Warranty (U.S.A. Only) 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 workmanship for which it is responsible. The Seller’s obligation under this warranty shall be limited to replacing or repairing, at Seller’s option, without charge, F.O.B.
TABLE OF CONTENTS Page Page SECTION 1 – DESCRIPTION ............................................. 1 I. OVEN USES.............................................................. 1 II. OVEN COMPONENTS.............................................. 1 A. Conveyor Motor Drive.................................... 1 B. Crumb Pans................................................... 1 C. Conveyor........................................................ 1 D. End Plugs......................................
SECTION 1 – DESCRIPTION Figure 1-1. Oven Components I. OVEN USES PS740 Series Ovens can be used to bake and/or cook a wide variety of food products, such as pizza, pizza –type products, cookies, sandwiches and others. II. OVEN COMPONENTS – see Figure 1-1. A. Conveyor Drive Motor: Moves the conveyor. B. Crumb Pans: Catch crumbs and other materials that drop through the conveyor belt. One crumb pan is located at each end of the conveyor. C. Conveyor: Moves the food product through the oven. D.
I. OVEN SPECIFICATIONS Table 1-1 Dimensions Overall Height Overall Depth Overall Length Conveyor Width – belt width is 32″ Shortened Exit Conveyor - 24″ Overall Depth Overall Length * All other dimension are the same Recommended Minimum Clearances Rear of Oven to Wall Control end of conveyor to Wall Non-control end of conveyor to Wall) Single Oven 48-3/16″ (1219mm) 60″ (1524mm) 76-1/2″ (1930mm) 33-1/2″ (838mm) or 2 × 15″ (381mm) Single Oven 52.
SECTION 2 – INSTALLATION WARNING – After any conversions, readjustments, or service work on the oven: • Perform a gas leak test. • Test for proper combustion and gas supply. • Test for correct air supply, particularly to the • Check that the ventilation system is in operation. burner blower. WARNING - Keep the appliance area free and clear of combustibles. WARNING – The oven must be installed on an even (level) non-flammable flooring and any adjacent walls must be non-flammable.
PS740 24″ OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT PS740 Gas Oven Installation TYPE OF INSTALLATION Kit P/N61452 PS740 Single Oven Option Base w/ 15″ Legs, Casters & Top Kit P/N61123 PS740 DoubleOven OptionBase w/ 6″ Legs, Casters & Top Kit P/N61457 PS740 Single Gas Oven 1 PS740 Double Gas Oven 2 PS740 Triple Gas Oven 3 PS740 TripleOven OptionBase w/ Casters& Top Kit P/N61458 1 1 1 PARTS LIST FOR SERIES PS740 GAS OVEN INSTALLATION KIT P/N 61452 (Two required for double oven) (Th
PS740 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT PS740 Gas Oven Installation TYPE OF INSTALLATION Kit P/N61033 PS740 Single Oven Option Base w/ 15″ Legs, Casters & Top Kit P/N67025 PS740 DoubleOven OptionBase w/ 6″ Legs, Casters & Top Kit P/N67026 PS740 Single Gas Oven 1 PS740 Double Gas Oven 2 PS740 Triple Gas Oven 3 PS740 TripleOven OptionBase w/ Casters& Top Kit P/N66164 1 1 1 PARTS LIST FOR SERIES PS740 GAS OVEN INSTALLATION KIT P/N 61033 (Two required for double oven) (Three
Figure 2-2A. Model PS740 24″ Single Oven Option Base with Legs and Top 1 8 HARDWARE BAG 5, 6, 7, 10 & 11 4 2 9 PARTS LIST FOR PS740 SERIES 24″ SINGLE OVEN OPTION - BASE w/15″ LEGS & TOP P/N 67027 ITEM NO. QTY PART NO.
Figure 2-2B. Model PS740 32″ Single Oven Option Base with Legs and Top 1 8 HARDWARE BAG 5, 6, 7, 10 & 11 4 2 9 PARTS LIST FOR PS740 SERIES 32″ SINGLE OVEN OPTION - BASE w/15″ LEGS & TOP P/N 67025 ITEM NO. QTY PART NO.
Figure 2-3A. Model PS740 24″ Double Oven Option Base with Legs and Top 1 8 HARDWARE BAG 5, 6, 7, 10 & 11 4 2 9 PARTS LIST FOR PS740 SERIES 24″ DOUBLE OVEN OPTION - BASE w/6″ LEGS & TOP P/N 67028 ITEM NO. QTY PART NO.
Figure 2-3B. Model PS740 32" Double Oven Option Base with Legs and Top 1 8 HARDWARE BAG 5, 6, 7, 10 & 11 4 2 9 PARTS LIST FOR PS740 SERIES 32″ DOUBLE OVEN OPTION - BASE w/6″ LEGS & TOP P/N 67026 ITEM NO. QTY PART NO.
Figure 2-4A. Model PS740 24″ Triple Oven Option Base with Outriggers and Top 1 15 HARDWARE BAG 7, 8, 9, 10, 11, 12, 13, 14, & 17 5 3 6 2 4 16 PARTS LIST FOR PS740 SERIES 24″ TRIPLE OVEN OPTION - BASE w/CASTERS & TOP P/N 64946 ITEM NO. 1 QTY 1 PART NO.
Figure 2-4B. Model PS740 32″ Triple Oven Option Base with Outriggers and Top 1 15 HARDWARE BAG 7, 8, 9, 10, 11, 12, 13, 14, & 17 5 3 6 2 4 16 PARTS LIST FOR PS740 SERIES 32″ TRIPLE OVEN OPTION - BASE w/CASTERS & TOP P/N 66164 ITEM NO. 1 QTY 1 PART NO.
III. VENTILATION SYSTEM B. IMPORTANT Where 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 • LEAD TO INCREASED SERVICE EXPENSES FOR THE OWNER A. The rate of air flow exhausted through the ventilation system may vary depending on the oven configuration and hood design.
IV. ASSEMBLY Figure 2-6. Leg extension and casters installation A. Top Panel and Base Pad Assembly 1. Install the four leg extensions onto the base pad using the 3/8″-16 × 1″ screws, 3/8″ flat washers, and 3/8″ lockwashers supplied in the Base Pad Kit. See Figure 2-6. Check that the finished sides of each leg extension face OUTWARDS. One rear leg should be attached using three 3/8″-16 × 1″ screws and the 3/4″ eyebolt, as shown in Figure 2-6.
C. NOTE: DO NOT install top panel onto double or triple ovens until AFTER stacking the oven cavities. See Part B, Stacking. B. Restraint Cable Installation Because the oven is equipped with casters, a restraint cable assembly must be installed to limit the movement of the appliance without depending on the connector and the quick disconnect device or its associated piping. One end of the cable is anchored to the eyebolt on the rear surface of the oven’s base pad, while the other is anchored to the wall.
D. Conveyor Installation 1. Unfold the conveyor as shown in Figure 2-12. Then, begin to slide the conveyor into the end of the oven. The conveyor can only be installed from the end of the oven with the drive motor. 2. Figure 2-13. Conveyor placement Crumb tray support bracket Continue moving the conveyor into the oven until the frame protrudes equally from each end of the oven.
5. REVERSING THE CONVEYOR BELT If it is necessary to add or remove conveyor links to achieve the correct tension, OR if it is necessary to reverse the conveyor belt for correct orientation, the belt will need to be removed from the conveyor frame. If this is necessary, perform the following procedure: Remove the conveyor from the oven and find the master link location. Remove master links and remove the belt from the conveyor frame.
Figure 2-17. Utility Connection Locations for Gas Ovens Strain-relief fitting Gas Inlet (One per Single, Double, or Triple Oven) Electrical Junction Box (One per oven cavity) VII. GAS SUPPLY on the oven serial plate. The location of the serial plate is shown in Figure 1-1 (in Section 1, Description). CAUTION: A fused disconnect switch or a main circuit breaker (customer furnished) MUST be installed in the electric supply line for each oven cavity.
B. Connection Figure 2-18. Flexible Gas Hose Installation Check the oven’s gas supply requirements before making the gas utility connection. Gas supply requirement are listed on the oven’s serial plate and in Table 1-4. Gas Orifice and Pressure Specifications (in Section 1, Description). 1/2″ gas pipe nipple Check the serial plate to determine the type of gas (Propane or Natural) to be used with the oven.
Figure 2-20. Burner Assembly F. Adjusting the Minimum Pressure Setting 1. Disconnect pressure feedback connection (if appcable). 2. Connect a suitable pressure gauge to pipe line or to outlet pressure tap of gas control concerned, to measure burner pressure (measuring point must be as near to burner as possible). 3. Disconnect electrical connection of the Moduplus®. 4. Energize operator, set control in operation and wait until an outlet pressure is recorded on pressure gauge. 5.
SECTION 3 - OPERATION WARNING DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHILE IT IS IN OPERATION. C. Temperature Control/Display D. Message Bar E. Energy Level Indicators E. Energy Level Indicators B. Conveyor Time Setting A. Main On/Off Button I. LOCATION AND DESCRIPTION OF CONTROLS A. Main On/Off Button Displays the average set point of both right and left sides of the oven. Pressing on the display allows individual temperature displays and adjustments.
II. NORMAL OPERATION - STEP-BY-STEPNOTE: Right to Left temperature settings should not exceed a differential of 20 °F. A. Daily Startup Procedure 1. Check that the circuit breaker/fused disconnect is in the On position. Check that the window is closed. The touch panel display should be lit. 2. 3. 4. Press the ON button to activate the oven. The conveyor will not run, until the oven temperature has reached the set points. 3.
III. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION Oven will not turn On. No electrical power • Check that the circuit breaker/fused disconnect is on. Make sure the emergenct stop button is on. Oven will not heat. No gas pressure • Make sure main gas is on. Burner did not light • Turn oven off, and restart. If it still does not light, call for service. Oven is operating, but little or no air is coming from the fingers. Air fingers may be assembled incorrectly after cleaning.
SECTION 4 - MAINTENANCE WARNING Before ANY cleaning or servicing of the oven, perform the following procedure: 1. 2. 3. Switch off the oven and allow it to cool. Do NOT service the oven while it is warm. Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven. If it is necessary to move a gas oven for cleaning or servicing, disconnect the gas supply before moving the oven. When all cleaning and servicing is complete: 1.
Figure 4-2. Removing Air Fingers and Plates II. MAINTENANCE – MONTHLY NOTE: When removing the conveyor, refer to Figure 2-12 (in Section 2, Installation). A. Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section. B. Remove the crumb trays from the oven. C. Lift the drive end of the conveyor slightly, and push it forward into the oven. This removes the tension from the drive chain. Then, remove the drive chain from the conveyor sprocket.
III. MAINTENANCE – EVERY 3 MONTHS two sections of the shaft. See Figure 4-4. 9. A. Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section. B. Vacuum both of the blower mounts, and their surrounding compartments, using a shop vacuum. 10. Loosen the set screw on both of the conveyor drive sprockets. Then, remove the sprockets from the shaft. C. Tighten all electrical terminal screws. D. 11.
Figure 4-7. Rear panel access Figure 4-6. Disassembling the drive shaft Remove eight (8) screws to remove rear panel Bearings (2 total) Blower belt Blower motor Loosen four (4) screws to adjust motor position and belt tension E. Blower Belt IV. MAINTENANCE - EVERY 6 MONTHS 1. Remove the six screws shown in Figure 4-7. Then, remove the rear panel from the oven. A. Check that the oven is cool and the power is disconnected, as described in the warning at the beginning of this Section. 2.
V. KEY SPARE PARTS – Available separately. See Figure 4-8. 1 2 3 4 5 10 15 22 19 20 16, 17, 18 23 24 21 Figure 4-8. Key Spare Parts KEY SPARE PARTS PS740 GAS ITEM QTY.
Middleby-Marshall Model Number G208-240 Volt 50/60 Hz, 1 Phase P/N 60250 September 28, 2012 28 59324 Rev.
NOTES 29 P/N 60250 September 28, 2012
NOTES P/N 60250 September 28, 2012 30
NOTES 31 P/N 60250 September 28, 2012
WARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating and maintenance instructions thoroughly before installing or servicing this equipment. 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.
