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Middleby Marshall PS740E manual

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Table of contents for the manual

  • Page 1

    O WNER'S OPERA TING AND INST ALLA TION MANU AL f or domestic and standard e xpor t o vens ©2007 Middleby Marshall Inc. is a registered trademark of Middleby Marshall, Inc. All rights reserved. Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • (847)741-3300 • FAX (847)741-4406 PS740 Series Electric Ovens P/N 6[...]

  • Page 2

    ii W ARNING FOR Y OUR SAFETY , DO NO T ST ORE OR USE GASOLINE OR O THER FLAMMABLE V APORS AND LIQU IDS IN THE VICINITY OF THIS OR ANY O THER APPLIANCE. W ARNING Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury , or death. Read the installation, operation, and maintenance instructions thoroughl[...]

  • Page 3

    iii MIDDLEBY MARSHALL INC. O VEN LIMITED W ARRANTY (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. Seller’s factory,[...]

  • Page 4

    iv NO TE Wiring Diagrams are in Section 6 of this Manual. The diagram for each oven is also on the lower inner surface of its Control Console. Page SECTION 1 – DESCRIPTION ............................................ 1 I. OVEN USES ............................................................ 1 II. OVEN COMPONENTS .................................[...]

  • Page 5

    I. O VEN 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. O VEN 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 [...]

  • Page 6

    2 NO TE Wiring Diagrams are contained in Section 6 of this Manual and are also located inside the oven at the bottom of the Control Panel This Manual Must Be Kept For Future Reference I. O VEN SPECIFICA TIONS Table 1-1 Dimensions Single Oven Double Oven Triple Oven Overall Height 48-3/16 ″ (1219mm) 62-3/4 ″ (1575mm) 78-11/16 ″ (1981mm) Overal[...]

  • Page 7

    3 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. Recommended minimum clearances are specified in the Description section of this manual. WARNING – Do not obstruct the flow of ventilation air to and from[...]

  • Page 8

    PARTS LIST FOR SERIES PS740 ELECTRIC OVEN INSTALLATION KIT P/N 47810-0008 (Two required for double oven) (Three required for triple oven) ITEM NO. QTY PART NO. DESCRIPTION 1 1 55028 CONVEYOR END STOP 2 1 31461 CONVEYOR LEFT REAR STOP 3 1 42612 SERVICE AGENCY DIRECTORY 4 1 22500-0080 LABEL, MM 5 1 51054 ASSY, HANDLE & DOOR Figure 2-1A. PS740-Ser[...]

  • Page 9

    PS740 O VEN INST ALLA TION REQUIRED KITS AND EQUIPMENT PS740 PS740 PS740 PS740 Electric Oven Single Oven DoubleOven TripleOven Installation Option Base w/ OptionBase w/ OptionBase w/ TYPE OF INSTALLATION Kit 1 5 ″ Legs, 6 ″ Legs, Casters& Top Casters & Top Casters & Top Kit Kit Kit P/N47810-0008 P/N59720 P/N59725 P/N59726 PS740 Sing[...]

  • Page 10

    Figure 2-2A. Model PS740 24 ″ ″ ″ ″ ″ Single Oven Option Base with Legs and Top PARTS LIST FOR PS740 SERIES 24 ″ ″ ″ ″ ″ SINGLE OVEN OPTION - BASE w/15 ″ ″ ″ ″ ″ LEGS & TOP P/N 61123 HARD WA RE BA G 5, 6, 7, 10 & 11 1 2 3 4 9 8 12 ITEM NO. QTY PART NO. DESCRIPTION 1 1 61126 COMPLETE BASE WELDMENT 2 4 37900-0024[...]

  • Page 11

    Figure 2-2B. Model PS740 32 ″ ″ ″ ″ ″ Single Oven Option Base with Legs and Top PARTS LIST FOR PS740 32 ″ ″ ″ ″ ″ SERIES SINGLE OVEN OPTION - BASE w/15 ″ ″ ″ ″ ″ LEGS & TOP P/N 59720 HARD WA RE BA G 5, 6, 7, 10 & 11 1 2 3 4 9 8 12 ITEM NO. QTY PART NO. DESCRIPTION 1 1 60287 COMPLETE BASE WELDMENT 2 4 37900-0024[...]

  • Page 12

    ITEM NO. QTY PART NO. DESCRIPTION 1 1 61126 COMPLETE BASE WELDMENT 2 4 37900-0102 TOP PLATE, LEG WELDMENT 3 2 22290-0009 SWIVEL CASTER W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER FLAT PLATE 5 32 2000531 3/8 ″ -16 × 1 HEX SCREW, SST 6 32 21416-0001 3/8 ″ FLAT WASHER, SS 7 32 21422-0001 3/8 ″ SPLIT LOCK WASHER, ZP 8 1 22450-0228 RESTRAINT [...]

  • Page 13

    ITEM NO. QTY PART NO. DESCRIPTION 1 1 60287 COMPLETE BASE WELDMENT 2 4 37900-0102 TOP PLATE, LEG WELDMENT 3 2 22290-0009 SWIVEL CASTER W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER FLAT PLATE 5 32 2000531 3/8 ″ -16 × 1 HEX SCREW, SST 6 32 21416-0001 3/8 ″ FLAT WASHER, SS 7 32 21422-0001 3/8 ″ SPLIT LOCK WASHER, ZP 8 1 22450-0228 RESTRAINT [...]

  • Page 14

    ITEM NO. QTY PART NO. DESCRIPTION 1 1 61126 COMPLETE BASE WELDMENT 2 4 45209 QUAD OUTRIGGER WELDMENT 3 2 22290-0009 SWIVEL CASTER, W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER, FLAT PLATE 5 4 45206 INSERT,QUAD ADJUSTMENT FOOT 6 4 45205 SPACER,QUAD CASTER 7 32 A27727 3/83 -16x1-1/4 HEX BOLT 8 32 A21924 3/83 FLAT WASHER, SS 9 32 21422-0001 3/83 SP[...]

  • Page 15

    ITEM NO. QTY PART NO. DESCRIPTION 1 1 60287 COMPLETE BASE WELDMENT 2 4 45209 QUAD OUTRIGGER WELDMENT 3 2 22290-0009 SWIVEL CASTER, W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER, FLAT PLATE 5 4 45206 INSERT,QUAD ADJUSTMENT FOOT 6 4 45205 SPACER,QUAD CASTER 7 32 A27727 3/83 -16x1-1/4 HEX BOLT 8 32 A21924 3/83 FLAT WASHER, SS 9 32 21422-0001 3/83 SP[...]

  • Page 16

    III. VENTILATION SYSTEM B. Recommendations NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 2-5 ARE RECOMMENDATIONS ONLY. LOCAL, NATIONAL AND INTERNATIONAL CODES MUST BE FOLLOWED WHEN INSTALLING THE VENTILATION SYSTEM. ANY APPLICABLE CODES SUPERSEDE THE RECOMMENDATIONS SHOWN IN THIS MANUAL. The rate of air flow exhausted through the ventilation system[...]

  • Page 17

    IV. ASSEMBLY 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 ″[...]

  • Page 18

    NOTE: DO NOT install top panel onto double or triple ovens until AFTER stacking the oven cavities. See Part B, Stacking. B. Stacking For single ovens, skip ahead to Part C, Restraint Cable Installation. IMPORTANT Middleby Marshall STRONGLY RECOMMENDS that PS740 Electric oven cavities be stacked BY AUTHORIZED PERSONEL. Contact your Middleby Marshall[...]

  • Page 19

    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. Continue moving the conveyor into the oven until the frame protrudes equally from each end of the oven. Check that the crumb tray su[...]

  • Page 20

    5. 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 assembly from the oven and place it flat on the flo[...]

  • Page 21

    17 III. ELECTRICAL CONNECTION INFORMATION FOR PS740E-SERIES OVENS. WARNING Authorized supplier personnel normally accomplish the connections for the ventilation system, electric supply, as arranged by the customer. Following these connections, the factory-authorized installer can perform the initial startup of the oven. Check the oven data plate (F[...]

  • Page 22

    18 UTILITY ROUGH-IN DIMENSIONS AND POSITIONING FOR PS740-SERIES OVENS Figure 2-19. Typical PS740-Series Oven(s) Installation To O v e n To O v e n 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 CUS[...]

  • Page 23

    SECTION 3 - OPERA TION 19 I. LOCATION AND DESCRIPTION OF CONTROLS A. Main On/Off Button Turns all oven functions on or off. If the oven is below the set point, it will rise to the set point and turn the conveyor on. If it is turned off and the oven is above 200° F, the blowers will remain on until the oven drops below 200° F. B. Conveyor Time Set[...]

  • Page 24

    20 II. NORMAL OPERATION - STEP-BY-STEP- 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. Adjust the conveyor to the desired bake time. 3. Press the temperature button to display right and left hand oven settings. Set temper[...]

  • Page 25

    21 III. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION No electrical power • Check that the circuit breaker/fused disconnect is on. Make sure the emergenct stop button is on. Oven will not turn On. Faulty contactor Faulty heater element • Replace contactor. • Replace element. Oven will not heat. Air fingers may be as- sembled incor[...]

  • Page 26

    Vents on front panel of oven Fan grills (3) on rear of oven and control compartment Vent (2) on rear of machinery compartment SECTION 4 - MAINTENANCE WARNING Possibility of injury from moving parts and electrical shock exists in this oven. Switch off and lockout/tagout the electric supply BEFORE beginning to disassemble, clean, or service any oven.[...]

  • Page 27

    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 int[...]

  • Page 28

    III. MAINTENANCE – EVERY 3 MONTHS A. Check that the oven is cool and the power is discon- nected, 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. C. Tighten all electrical terminal screws. D. Split Belt Disassembly and Cleaning 1. Refer to [...]

  • Page 29

    Figure 4-6. Disassembling the drive shaft E. Blower Belt 1. Remove the eight screws shown in Figure 4-7. Then, remove the rear panel from the oven. 2. Check the blower belt for the proper 1/4 ″ (6mm) deflec- tion at the center, and for cracking or excessive wear. See Figure 4-7. Overtightening the belt will cause premature bearing failure and pos[...]

  • Page 30

    V. KEY SPARE PARTS – Available separately. See Figure 4-8. 26 Figure 4-8. Key Spare Parts ITEM QTY. P/N DESCRIPTION 1 1 60190 DIGITAL DISPLAY, PROGRAMMED 2 1 58920 CONVEYOR DRIVE MOTOR W/PICKUP ASSY. 3 1 58679 CONVEYOR SPEED CONTROLER 4 1 60196 KIT, THERMOCOUPLE 6 ″ 5 1 59668 BELT, BLOWER 6 1 57288 MOTOR, BLOWER, 2HP 7 1 33983 HIGH LIMIT CONTRO[...]

  • Page 31

    27 SECTION 5 TR OUBLESHOOTING PROBLEM: PRODUCTS ARE OVERCOOKED OR UNDERCOOKED Check for correct setting of conveyor speed control. Set the conveyor speed control at correct setting. Check for correct setting on tempera- ture controller. Turn temperature control to correct setting. If products still cook incorrectly, call your Middleby Marshall Serv[...]

  • Page 32

    SECTION 6 - WIRING DIA GRAM Middleby-Marshall Model Number E208-240 Volt 50/60 Hz, 3 Phase 28 60739 Rev. F[...]

  • Page 33

    29 Middleby-Marshall Model Number E380-480 Volt 50/60 Hz, 3 Phase 60741 Rev. F[...]

  • Page 34

    30 NOTES[...]

  • Page 35

    31 NOTES[...]

  • Page 36

    Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • FAX (847)741-4406 www .middleb y .com Middleby is proud to support the Commercial Food Equipment Service Association (CFESA). We recognize and applaud CFESA's ongoing efforts to improve the quality of technical service in the industry. W[...]