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Middleby Marshall PS740E Owner's Operating And Installation Manual

Ps740 series electric ovens
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PS740 Series
Electric
Domestic & Std. Export
ENGLISH
PS740 Series Electric Ovens
Model:
•
PS740E Electric
OWNER'S OPERATING AND
INSTALLATION MANUAL
for domestic and standard export ovens
©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
Combinations:
•
Single Oven
•
Double Oven (Two-Stack)
•
Triple Oven (Three-Stack)
P/N 60254
November 18, 2008 Rev. B

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Summary of Contents for Middleby Marshall PS740E

  • Page 1 ©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 November 18, 2008 Rev. B Combinations: •...
  • Page 2 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. FOR YOUR SAFETY, DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
  • 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

    WIRING DIAGRAM, 740 Electric Oven, E380-480V, 50/60 Hz, 3 Ph ... 29 Wiring Diagrams are in Section 6 of this Manual. The diagram for each oven is also on the lower A. Main Screen ... 20 B. Daily Startup Procedure ... 20 C.

  • Page 5: Section 1 - Description

    One crumb pan is located at each end of the conveyor. C. Conveyor: Moves the food product through the oven. D. End Plugs: Allow access to the oven’s interior. Eyebrows: Can be adjusted to various heights to prevent heat loss into the environment.

  • Page 6: Oven Specifications

    208-240V 208-240V 380V 208-240V 480V IMPORTANT – Additional electrical information is provided on the oven’s serial plate, and on the wiring diagram inside the machinery compartment. Wiring Diagrams are contained in Section 6 of this Manual Single Oven 48-3/16″ (1219mm) 60″...

  • Page 7: Section 2 - Installation

    Recommended minimum clearances are specified in the Description section of this manual. WARNING – Do not obstruct the flow of 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 supply to the oven.

  • Page 8: Required Kits And Equipment

    PS740 Single Gas Oven PS740 Double Gas Oven PS740 Triple Gas Oven PARTS LIST FOR SERIES PS740 ELECTRIC OVEN ITEM Figure 2-1A. PS740-Series Electric Oven Installation Parts PS740 24″ ″ ″ ″ ″ OVEN INSTALLATION PS740 PS740 Single Oven Installation Option Base w/ 15″...
  • Page 9 Electric Oven TYPE OF INSTALLATION P/N47810-0008 PS740 Single Electric Oven PS740 Double Electric Oven PS740 Triple Electric Oven PARTS LIST FOR SERIES PS740 ELECTRIC OVEN ITEM Figure 2-1B. PS740-Series Electric Oven Installation Parts PS740 OVEN INSTALLATION PS740 PS740 Single Oven...
  • Page 10 HARD WARE BA G 5, 6, 7, 10 & 11 PARTS LIST FOR PS740 SERIES 24″ ″ ″ ″ ″ SINGLE OVEN OPTION - BASE w/15″ ″ ″ ″ ″ LEGS & TOP ITEM NO. Option Base with Legs and Top P/N 61123 PART NO.
  • Page 11 HARD WARE BA G 5, 6, 7, 10 & 11 PARTS LIST FOR PS740 32″ ″ ″ ″ ″ SERIES SINGLE OVEN OPTION - BASE w/15″ ″ ″ ″ ″ LEGS & TOP ITEM NO. Option Base with Legs and Top P/N 59720 PART NO.
  • Page 12 HARD WARE BA G 5, 6, 7, 10 & 11 PARTS LIST FOR PS740 SERIES 24″ ″ ″ ″ ″ DOUBLE OVEN OPTION - BASE w/6″ ″ ″ ″ ″ LEGS & TOP ITEM NO. Option Base with Legs and Top P/N 61457 PART NO.
  • Page 13 HARD WARE BA G 5, 6, 7, 10 & 11 PARTS LIST FOR PS740 SERIES 32″ ″ ″ ″ ″ DOUBLE OVEN OPTION - BASE w/6″ ″ ″ ″ ″ LEGS & TOP ITEM NO. Option Base with Legs and Top P/N 59725 PART NO.
  • Page 14 Option Base with Outriggers and Top HARDWARE BAG 7, 8, 9, 10, 11, 12, 13, 14, & 17 PARTS LIST FOR PS740 SERIES 24″ ″ ″ ″ ″ TRIPLE OVEN OPTION - BASE w/CASTERS & TOP ITEM NO. P/N 61458 PART NO.
  • Page 15 Option Base with Outriggers and Top HARDWARE BAG 7, 8, 9, 10, 11, 12, 13, 14, & 17 PARTS LIST FOR PS740 SERIES 32″ ″ ″ ″ ″ TRIPLE OVEN OPTION - BASE w/CASTERS & TOP ITEM NO. P/N 59726 PART NO.

  • Page 16: Ventilation System

    A negative pressure in the kitchen can cause heat- related problems to the oven components as if there were no ventilation at all. The best method of supplying return air is through the heating, ventilation and air conditioning (HVAC) system.

  • Page 17: Assembly

    (see Part C, Restraint Cable Installation). If your oven is equipped with the lower shelf, position it in place as shown in Figure 2-6. Check that the lip on the shelf faces DOWN. Seal joint between leg and shelf with NSF listed silicone.

  • Page 18: Stacking

    IMPORTANT Middleby Marshall STRONGLY RECOMMENDS that PS740 Electric oven cavities be stacked BY AUTHORIZED PERSONEL. Contact your Middleby Marshall Authorized Service Agent for complete stacking instructions. Stack an oven cavity on top of the lower oven. Check the following: • All four sides of the lower lip (on the bottom edge of the oven cavity) overlap the top of the lower oven •...

  • Page 19: Conveyor Installation

    D. Conveyor Installation 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. Continue moving the conveyor into the oven until the frame protrudes equally from each end of the oven.

  • Page 20: Final Assembly

    Resetting direction jumper on the conveyor control board. Switching the photo detector. REVERSING THE CONVEYOR BELT Remove the conveyor from the oven and find the master link location. Remove master links and remove the belt from the conveyor frame. Reassemble the belt back onto the frame (in the reverse direction) and reinstall the master links.

  • Page 21: Electric Supply For Electrically Heated Ovens

    (copper) recommended to provide the current required; (refer to the data plate for the ampere specifications). The electric current rating for each conductor supplying a PS740E-Series Oven must comply to local and national codes. Typical specifications for each PS740E-Series Oven are 208V or 240V, 3-phase, 4-wire, 60-ampere, 34.4kW.

  • Page 22: Connection

    Do NOT use conduit for ground. DOMESTIC: 480V elements, 3 Ph, 32.5 Amp draw, 50/60 Hz, 208-240V control circuit and main blower motor, 4 pole, 5 wire system per oven (3 hot, 1 neutral, 1 grd). Do NOT use conduit for ground. FOR PS740-SERIES OVENS Suggested dimensions are shown;...

  • Page 23: I. Location And Description Of Controls

    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°...

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

    20 °F. Right Set point temperature - Pressing on this value allows the user to adjust the set point for the right side of the oven. Left Set point temperature - Pressing on this value allows the user to adjust the set point for the left side of the oven.

  • Page 25: Quick Reference: Troubleshooting

    • Turn oven off, and allow to cool. Check conveyor for block- age. PROBLEM • Failure to do this will eventually shut down the oven due to excessive temperature. • This should be corrected by a qualified service technician. •...

  • Page 26: Cooling Vents And Grills

    DO NOT use excessive amounts of water. DO NOT use a caustic oven cleaner, which can damage the bake chamber surfaces. ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized Service Agent. It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this section be performed ONLY by a Middleby Marshall Authorized Service Agent.

  • Page 27: Ii. Maintenance – Monthly

    Then, remove the drive chain from the con- veyor sprocket. D. Slide the conveyor out of the oven, folding it as it is removed. E. Remove the end plugs from the oven. The end plugs are shown in Figure 1-1 (in Section 1, Description).

  • Page 28: Iii. Maintenance – Every 3 Months

    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.

  • Page 29: Disassembling The Drive Shaft

    Loosen four (4) screws to adjust motor position and belt tension IV. MAINTENANCE - EVERY 6 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.

  • Page 30: Key Spare Parts Kit

    V. KEY SPARE PARTS – Available separately. See Figure 4-8. 13, 14, 15, 16 ITEM QTY. DESCRIPTION 60190 DIGITAL DISPLAY, PROGRAMMED 58920 CONVEYOR DRIVE MOTOR W/PICKUP ASSY. 58679 CONVEYOR SPEED CONTROLER 60196 KIT, THERMOCOUPLE 6″ 59668 BELT, BLOWER 57288 MOTOR, BLOWER, 2HP 33983 HIGH LIMIT CONTROL MODULE, 240V 51399...

  • Page 31: Section 5 - Troubleshooting

    OVEN BLOWER AND CONVEYOR OPERATE, Check for correct ture controller. control to correct heat, call your Middleby Marshall Service Agency. setting. CONVEYOR WILL NOT HOLD PROPER SPEED OVEN DOES NOT TURN ON WHEN ITS Check that all electric supply switches are set to...

  • Page 32: Section 6 - Electrical Wiring Diagram

    SECTION 6 - WIRING DIAGRAM...
  • Page 34 NOTES...
  • Page 35 NOTES...
  • Page 36 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 Using any parts other than genuine Middleby Marshall factory manufactured parts relieves the manufacturer of all warranty and liability.

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