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Middleby Marshall PS520G installation manual Section Maintenance, Notice

Models: PS520G

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SECTION 4

SECTION 4

MAINTENANCE

SECTION 4

MAINTENANCE

WARNING

Before ANY cleaning or servicing of the oven, perform the following procedure:

1.Switch off the oven and allow it to cool. Do NOT service the oven while it is warm.

2.Turn the full-flow gas safety valve to the off position.

3.Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven.

4.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.If the oven was moved for servicing, return the oven to its original location.

2.Reconnect the gas supply.

3.Reconnect the electrical supply.

4.Turn on the full-flow gas safety valve. Test the gas line connections for leaks using approved leak test sub- stances or thick soap suds.

5.Turn on the electric supply circuit breaker(s).

6.Perform the normal startup procedure.

WARNING

Possibility of injury from rotating parts and electrical shock exist in this oven. Turn off and lockout or tagout electrical supply to oven(s) before attempting to disassemble, clean or service oven(s). Never disas- semble or clean the oven with the blower switch or any other part of the oven turned on.

WARNING

Before performing any maintenance work or cleaning,

turn main power switch off.

CAUTION

When cleaning do not use any abrasive cleaning

materials or water spray, wipe clean only. Never use a water hose or pressurized steam cleaning equipment when cleaning this oven.

NOTICE

If the oven is to be removed from its installed location for servicing, perform the following procedure:

1.Switch off the oven and allow it to cool. Do NOT service the oven while it is warm.

2.Turn off main circuit breakers and disconnect connector from oven.

3.Move oven to desired location for servicing.

4.When servicing is complete, move oven to original location.

5.Adjust legs to level oven.

6.Connect electrical connectors to oven.

7.Turn on main circuit breakers.

8.Follow normal startup instructions.

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Middleby Marshall PS520G installation manual Section Maintenance, Notice

Contents

owners operating & installationmanual MiddlebyGASOLINE OR OTHER FLAMMABLE VAPORS AND FOR YOUR SAFETY, DO NOT STORE OR USELIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCEU.S.A. ONLY MIDDLEBY MARSHALLNO QUIBBLE LIMITED WARRANTY Continued TABLE OF CONTENTSTABLE OF CONTENTS I.MODEL IDENTIFICATION SECTION DESCRIPTIONFigure 1-1.Single PS520 Oven Figure 1-2.Double PS520 OvenSERIES PS520 ELECTRICAL SPECIFICATIONS PS520 SERIES OVEN SPECIFICATIONSand are also located inside the oven at the bottom of the Control PanelII. COMPONENT FUNCTION Figure Figure 1-4. PS520-SeriesOven Components LocationsBlower Assembly Right Control Box II. COMPONENT FUNCTIONFigure 1-5.Machinery Compartment Components A. Conveyor Motor and Conveyor BeltFigure 1-6.Cooling Fan SECTION DESCRIPTIONF2. Blank Plates SECTION 2 INSTALLATION SECTION INSTALLATION•Perform a gas leak test •Test for correct air supplyINSTALLATION KIT PARTS LIST FOR SERIES PS520 GAS OVENI. UNLOADING Single Stack OvenDouble Stack Oven PARTS LIST FOR SERIES PS520 Gas OVENTriple Stack Oven INSTALLATION KIT4.00 101.6mm Figure 2-5.MODEL PS520 SINGLE OVEN DIMENSIONS1to 3-3/4inch maximum in 1/2 inch increments Figure 2-6.MODEL PS520 DOUBLE OVEN DIMENSIONS4.00 101.6mm1to 3-3/4inch maximum in 1/2 inch increments Figure 2-7.MODEL 520 TRIPLE OVEN DIMENSIONSFOR PS520-SERIESOVENS UTILITY ROUGH-INDIMENSIONS AND POSITIONINGII. VENTILATION GUIDELINES Figure 2-9.Typical PS520-SeriesOvens InstallationFigure 2-10.Typical Electric Oven Data Plate IV. ELECTRIC SUPPLY FOR GAS HEATED OVENSFigure 2-11.Junction Connection Box V. GAS SUPPLY Figure 2-13- Gas Control Valve Figure 3-1. PS520-SeriesOven Control Functions SECTION OPERATIONI. CONTROL FUNCTIONS B. Blower Switch A. Door Safety SwitchC. Heat Switch D. Temperature ControllerFigure 3-3.Conveyor Speed Digital Control MEASURING CONVEYOR SPEEDFigure 3-4.Product at entrance end of baking chamber – BEGINNING OF TIMINGA. Startup Procedures Daily Startup III. STEP-BY-STEPOPERATIONPower Failure B. Shutdown ProcedureFigure 3-6.Control Panel SECTION OPERATIONA.Daily Startup Procedure IV. NORMAL OPERATION - STEP-BY-STEPB.DAILYSHUTDOWNPROCEDURE wait + forSECTION 3 OPERATION SYMPTOM V. QUICK REFERENCE: TROUBLESHOOTINGPROBLEM SOLUTIONNOTICE SECTION MAINTENANCESECTION MAINTENANCE Figure 4-2.Conveyor Belt and Crumb Pan Cleaning I. MAINTENANCE - DAILYFigure 4-1.Oven Cooling Fans A. ExteriorPRECAUTIONS II. MAINTENANCE - MONTHLYA. Removing Conveyor From Oven For Cleaning Figure6. Remove conveyor as shown Figure FigureFigure Figure T1 T2 T3 B1 B2 B3 B. Air Fingers Disassembly For CleaningStandard Fingers FigureFigure C. Reassembly of Air FingersFigure 4-12.Standard Lower Finger Figure 4-13.Standard Upper FingerFigure FigureFigure Figure Figure D. Reinstall End Plugs2. Reinstall conveyor Figure E. Conveyor Reassembly Into OvenFigure Figure F. Checking Conveyor Belt TensionFigure FigureFigure Figure FigureFigure FigureFigure Figure FigureIV. MAINTENANCE - EVERY 6 MONTHS III. MAINTENANCE - EVERY 3 MONTHSIMPORTANT NOTICES FigureFigure KEY SPARE PARTS KITPS520-SERIESGAS OVEN KEY SPARE PARTS KIT Figure PROBLEM PRODUCTS ARE OVERCOOKED OR UNDERCOOKED SECTION TROUBLESHOOTINGPROBLEM PROBLEM OVEN DOES NOT HEATSECTION TROUBLESHOOTING NOTESSECTION SCHEMATICSWiring Diagram, G208-24050/60 GO, PS520G SECTION ELECTRICAL SCHEMATICS NOTESNOTES SECTION ELECTRICAL SCHEMATICSNOTICE NOTICENOTICE