Middleby Marshall 60254 Conveyor Installation, Do not Overtighten the Conveyor Belt

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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 supports located on the underside of the conveyor frame rest firmly against the lower end plugs, as shown in Figure 2-13.

3.When the conveyor is positioned properly, check for freedom of movement of the conveyor belt by pulling it for about 2-3 feet (0.6-1.0m) with your fingers. The drive and idler shafts must rotate smoothly, and the belt must move freely without rubbing on the inside of the oven.

4.Check the tension of the conveyor belt as shown in Figure 2-14. The belt should lift about 1″ (25mm).

DO NOT OVERTIGHTEN THE CONVEYOR BELT.

NOTE: If necessary, the belt tension can be adjusted by turning the conveyor adjustment screws, located at the idler (non-control) end of the conveyor. See Figure 2-14.

Figure 2-12. Conveyor installation

Folded

frame

Figure 2-13. Conveyor placement

Crumb tray

support bracket

End plug

Conveyor placed in oven

Figure 2-14. Conveyor Belt tension

Idler end (with belt tension

adjustment screws)

Drive end (with drive sprocket)

1″ (25mm) verti-

cal deflection

Adjustment

screws (2) on

idler end of

conveyor

15

P/N 60254 September 28, 2012

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Contents Owners Operating and Installation Manual Retain this Manual for Future Reference Middleby Marshall Table of Contents Not Shown Conveyor Drive Motor Moves the conveyorOven Specifications Installation Parts List for Series PS740 Electric Oven Installation KIT PS740 24″ Oven Installation Required Kits and EquipmentPS740 Oven Installation Required Kits and Equipment Item no QTY Description 66159 ″-16 × 1 HEX SCREW, SST 3B. Model PS740 32 Double Oven Option Base with Legs and Top Quad Outrigger Weldment 7A2S15 SCR, MS STR Trshd 10-32X3/4″ Other ventilation concerns III. Ventilation SystemRequirements RecommendationsTop Panel and Base Pad Assembly IV. AssemblyStacking Restraint Cable InstallationDo not Overtighten the Conveyor Belt Conveyor InstallationConveyor Belt Reversal Resetting Direction JumperSwitching Photo Detector Final Assembly18. Utility Connection Locations for Elec IV. Electric Supply for Electrically Heated OvensElectric Supply to be Provided by Customer Circuit Breaker Do not USE Conduit for Ground ConnectionLocation and Description of Controls II. Normal Operation STEP-BY-STEP Screen Alerts III. Quick Reference TroubleshootingMaintenance Daily MaintenanceTop Row Bottom Row II. Maintenance MonthlySplit Belt Disassembly and Cleaning III. Maintenance Every 3 MonthsBlower Belt IV. Maintenance Every 6 MonthsItem QTY Description KEY Spare Parts Available separately. See FigureProblem Problem Oven does not HeatWiring Diagram 60741 Rev. L 60254 September 28 60254 September 28 Installing or servicing this equipment
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