Middleby Cooking Systems Group PS520E operation manual Conveyor Reassembly Into Oven

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SECTION 4

MAINTENANCE

E. Conveyor Reassembly Into Oven

1. Lift conveyor and position it in the oven as shown.

NOTE: Conveyor may be inserted into either end of the oven. If it is ti be installed from the non-drive end of the oven the drive sprocket assembly must be removed as shown in conveyor disassembly section.

Figure 4-21

2. Reinstall the conveyor extension.

F. Checking Conveyor Belt Tension

WARNING

Oven conveyor belt must be cool when adjusting belt. Do not adjust belt if HOT.

1.With the conveyor assembly in the oven, stand at one end of the conveyor and check tension by lifting the conveyor belt at the center of the oven chamber opening (see Figure 4-23). The belt should not lift higher then 1” to 2” (75mm to 102mm).

2.If conveyor belt is still not under proper tension, an entire link must be removed. Use the following procedure “H. Conveyor Belt Link Removal” to remove a link. If conveyor belt is under proper tension proceed directly to “J. Attaching Drive Chain”.

3.Newer model PS520-Series ovens have adjustment screws at the end to tighten the conveyor belt. If these adjustment screws are at their limit and belt tension is still not correct, loosen the adjustment screws, proceed to “H. Conveyor Belt Link Removal” to shorten the belt and then return to “F. Checking Conveyor Belt Tension” for proper adjustment. If belt is tensioned properly proceed directly to “J. Attaching Drive Chain”.

Conveyor Extension

Figure 4-22

Figure 4-23

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Contents Installation Page A. Only IiiTable of Contents Section Description Model IdentificationPS520 Series Oven Specifications This Manual Must Be Kept For Future ReferenceII. Component Function Section Installation UnloadingInstallation KIT Single and Double Stack OvensModel PS520 Single Oven Dimensions II. Ventilation IV. Electric Supply for Electrically Heated Ovens 11. Junction Connection BoxSection Operation Control FunctionsDoor Safety Switch Blower SwitchHeat Switch Temperature ControllerConveyor Measuring Conveyor SpeedSee -4 Start-up Procedure Daily Start-up Power FailureShutdown Procedure III. STEP-BY-STEP OperationDaily Shutdown Procedure Daily Start-up ProcedureIV. Normal Operation STEP-BY-STEP Overtemp Quick Reference Troubleshooting SymptomSection Maintenance Maintenance Daily ExteriorImportant Note Conveyor Belt FigureII. Maintenance Monthly PrecautionsRemoving Conveyor From Oven For Cleaning Part#QuantitySection Maintenance Air Fingers Disassembly For cleaning Standard Fingers Reassembly of Air Fingers 12. Standard Lower FingerExtended Lip Tab on Outer Plate Flange Finger Manifold Reinstall End Plugs Conveyor Reassembly Into Oven Checking Conveyor Belt TensionConveyor Belt Link Removal Attaching Drive Chain III. Maintenance Every 3 Months IV. Maintenance Every 6 MonthsElectrical Terminals VentilationPS520-SERIES Electric Oven KEY Spare Parts KIT Description QuantitySection Troubleshooting E208-240V 50/60/1 E380-480V 50/60/1 E230-240V CE, 1Ph E380-400V CE, 1Ph E380-400V CE, 3Ph