Middleby Marshall PS520G User Manual

©2006 Middleby Marshall Inc.MiddlebyMiddlebyMiddlebyMiddlebyMiddlebyMarshallMarshallMarshallMarshallMarshallA MIDDLEBY COMPANYPS520-Series Gas Ovens:

6SECTION 1DESCRIPTIONHalf Blank PlateBlank PlateOuter PlateInner PlateFinger Manifold AssemblyBaffleFigure 1-7. Blank Plates (two sizes) and an Air F

SECTION 2INSTALLATION7WARNINGKeep the appliance area free and clear of combustibles.WARNINGDo not obstruct the flow of combustion and ventilation air

8SECTION 2INSTALLATIONPARTS LIST FOR SERIES PS520 GAS OVENINSTALLATION KITSingle Stack OvenP/N 59182ITEMNO. QTY PART NO. DESCRIPTION1 4 3101908 LEG 4″

SECTION 2INSTALLATION9Figure 2-1 (continued). PS520-Series Gas Oven Installation PartsITEMNO. QTY PART NO. DESCRIPTION1 2 48392 INSULATION BOTTOM TRA

10SECTION 2INSTALLATION4.00101.6mmFigure 2-5. MODEL PS520 SINGLE OVEN DIMENSIONSThe Opening Height is Adjustable from 2-1/4 inch minimumto 3-3/4 inch

SECTION 2INSTALLATION11Figure 2-6. MODEL PS520 DOUBLE OVEN DIMENSIONS4.00101.6mm1The Opening Height is Adjustable from 2-1/4 inch minimumto 3-3/4 inc

12SECTION 2INSTALLATIONFigure 2-7. MODEL 520 TRIPLE OVEN DIMENSIONS1The Opening Height is Adjustable from 2-1/4 inch minimumto 3-3/4 inch maximum in

SECTION 2INSTALLATION13WARNINGDO NOT USE CONDUIT OR GAS LINEFOR GROUND CONNECTION.CAUTIONIT IS RECOMMENDED THAT THE OVENBE PLACED UNDER A VENTILATIONH

14SECTION 2INSTALLATIONThese ‘C’ Channel brackets are installed in the verticalplane using existing screws (Item 6) to support these ‘C’Channels using

SECTION 2INSTALLATION15V. GAS SUPPLYCAUTIONDURING PRESSURE TESTING NOTE THE FOLLOWING:1. The oven and its individual shutoff valve must be discon-nect

iiWARNINGFOR YOUR SAFETY, DO NOT STORE OR USEGASOLINE OR OTHER FLAMMABLE VAPORS ANDLIQUIDS IN THE VICINITY OF THIS OR ANY OTHERAPPLIANCE.WARNINGImprop

16SECTION 2INSTALLATION1. Checking the Gas Supply (Inlet) Pressurea. With the main gas supply valve closed and the circuitbreaker/fused disconnect in

SECTION 3OPERATION17SECTION 3OPERATIONI. CONTROL FUNCTIONSWARNINGA possibility of injury from rotating parts andelectric shock exists in this oven.Nev

18SECTION 3OPERATIONII. COMPONENT INFORMATION ANDLOCATION (Figures 3-1 and 3-2)A. Door Safety SwitchThe Door Safety Switch is located at the lower ri

SECTION 3OPERATION19E. ConveyorThe on-off switch for the conveyor motor is on the controlpanel. Also on the control panel is the digital conveyorspee

20SECTION 3OPERATIONWARNING OVEN MUST BE KEPT CLEAR OFCOMBUSTIBLES AT ALL TIMES.III. STEP-BY-STEP OPERATIONA. Startup ProceduresDaily Startup1. Turn t

SECTION 3OPERATION21Figure 3-6. Control Panel

22SECTION 3OPERATIONCAUTIONIn case of power failure, turn all switches to the “OFF”("O") position and remove the product. After the

SECTION 3OPERATION23DisplayShows the Set Pointor the Actual Tem-perature in degreesFahrenheit (F) orCelsius (C)."SP LOCK"LightLights wh

24SECTION 3OPERATIONV. QUICK REFERENCE: TROUBLESHOOTINGSYMPTOM PROBLEM SOLUTIONThe oven temperature ex-ceeded 650°F (343°C), andthe burner was au

SECTION 4MAINTENANCE25SECTION 4MAINTENANCEWARNINGPossibility of injury from rotating parts and electricalshock exist in this oven. Turn off and lockou

iiiMIDDLEBY MARSHALL INC.OVEN LIMITED WARRANTY(Non U.S.A.)The Seller warrants equipment manufactured by it to be free fromdefects in material and work

26SECTION 4MAINTENANCEI. MAINTENANCE - DAILYA. ExteriorEveryday you should clean the outside of the oven with asoft cloth and mild detergent.WARNINGNe

SECTION 4MAINTENANCE27Figure 4-3.II. MAINTENANCE - MONTHLYNOTE: The oven interior may require cleaning morethan once a month depending on the volume

28SECTION 4MAINTENANCE6. Remove conveyor as shown.Figure 4-6.Figure 4-7.CAUTIONBe careful not to bump the drive sprocket whilehandling the conveyor, t

SECTION 4MAINTENANCE29B. Air Fingers Disassembly For Cleaning1. As the air fingers are removed use a felt pen to mark allparts of the fingers. This in

30SECTION 4MAINTENANCE6. To remove the inner plate, pull the plate out and then up.Figure 4-11.7. The outer finger plate is stainless and may be clean

SECTION 4MAINTENANCE314. Replace the air fingers by pushing in at the back side.Remember to replace them according to the numbersmarked on them when t

32SECTION 4MAINTENANCE5. Install fingers and blank plates correctly with edgesinterlocked and no space between edges.Figure 4-18.Top FingerIncorrect -

SECTION 4MAINTENANCE33D. Reinstall End Plugs1. Reinstall lower end plug. Be sure to tighten the wingscrew on the end plug.2. Reinstall conveyor.3. Rei

34SECTION 4MAINTENANCEF. Checking Conveyor Belt TensionWARNINGOven conveyor belt must be cool when adjustingbelt. Do not adjust belt if HOT.1. With th

SECTION 4MAINTENANCE35G. Conveyor Belt Link Removal1. Using long nose pliers, an entire link can be removedwith the conveyor assembly either in or out

ivNOTEWiring Diagrams are in Section 6 of this Manual.The diagram for each oven is also on the lowerinner surface of its Control Console.TABLE OF CONT

36SECTION 4MAINTENANCEH. Attaching Drive Chain1. If drive sprocket assembly was removed reassemble itinto the conveyor drive shaft. Be sure flat on en

SECTION 4MAINTENANCE374. Reattach conveyor guard to control panel and securetwo screws.Install both upper end plugs.Figure 4-34.III. MAINTENANCE - EVE

38SECTION 4MAINTENANCEKEY SPARE PARTS KITAn oven can be purchased with a Key Spare Parts Kit(Figure 4-36). (The kit can be purchased when the oven iso

39SECTION 5TROUBLESHOOTINGSECTION 5TROUBLESHOOTINGPROBLEM:PRODUCTS ARE OVERCOOKEDOR UNDERCOOKEDCheck for correctsetting of conveyorspeed control.Set t

SECTION 5TROUBLESHOOTING40NOTES

41SECTION 6ELECTRICAL SCHEMATICSSECTION 6ELECTRICAL SCHEMATICSWiring Diagram, G208-240 50/60 GO, PS520G-+++--+-+21421540140021221321121024031731520620

SECTION 6ELECTRICAL SCHEMATICS42NOTES

43SECTION 6ELECTRICAL SCHEMATICSNOTES

Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • FAX (847)741-4406www.middleby.comMiddleby is proud t

SECTION 1DESCRIPTION1I. MODEL IDENTIFICATIONThe Middleby Marshall PS520-Series may be used eitheras a single oven or stacked for use as double or trip

2SECTION 1DESCRIPTIONPS520 SERIES OVEN SPECIFICATIONSConveyor Belt Width 18.00″ (457mm)Heating Zone Length 20.00″ (5098mm)Baking Area Square Feet 2.5

SECTION 1DESCRIPTION3II. COMPONENT FUNCTION (Figure 1-4)Figure 1-4. PS520-Series Oven Components Locations

4SECTION 1DESCRIPTIONII. COMPONENT FUNCTIONA. Conveyor Motor and Conveyor BeltThe conveyor belt is driven by a variable-speed electricmotor (Figure 1-

SECTION 1DESCRIPTION5Figure 1-6. Cooling Fan