Middleby Marshall PS528 (Double) Maintenance Daily, Exterior, Cooling Fan, Conveyor Belt Figure

Page 28

SECTION 4

MAINTENANCE

I. MAINTENANCE - DAILY

A. Exterior

Everyday you should clean the outside of the oven with a soft cloth and mild detergent.

WARNING

Never use a water hose or pressurized steam cleaning equipment when cleaning the oven.

B. Cooling Fan

1.  ONE COOLING FAN GRILLE AT THE REAR OF THE OVEN MUST BE CLEANED DAILY - Clean grille with a stiff nylon type brush.

2.   Check the air intake of the cooling fan daily. The best time to check is right after starting the oven.

IMPORTANT NOTE

The cooling fan operates when the blower switch is turned to “ON” (“I”). It must operate to keep the electrical control cabinet below 140°F (60°C).

D. Crumb Pans (Figure 4-2)

WARNING

Crumb pan is extremely hot while oven is operating. Allow oven to cool before removing crumb pan.

When the oven is cool remove and clean the crumb pan at each end of the oven. Each crumb pan can be removed by sliding it out, as shown in Figure 4-2. Reinstall the crumb pans after cleaning.

Cooling Fan Grille

WARNING

Figure 4-1. Oven Cooling Fans

IF FAN BLADE IS NOT ROTATING, BROKEN, OR FAN ASSEMBLY IS MISSING FROM MAIN BLOWER MOTOR SHAFT, DO NOT OPERATE OVEN. Replace cooling fan blade before operating oven. Serious damage could be done to the burner blower motor and/ or solid-state electrical components if oven is operated while cooling fan is not running or vent grille is plugged.

3.  Using a stiff nylon brush clean control compartment vent grille.

C. Conveyor Belt (Figure 4-2)

Everyday, just after starting the oven, stand at the un- loading end of the conveyor, and with a brush, remove food particles (crumbs, etc.) clinging to the conveyor belt, brushing them into the crumb pan.

Figure 4-2. Conveyor Belt and

Crumb Pan Cleaning

24

Image 28
Contents Owners operating Page Middleby Marshall Table of Contents Section Description Model IdentificationSeries PS1828 Electrical Specifications PS528 Series Oven SpecificationsThis Manual Must Be Kept For Future Reference PS528-Series Oven Components Locations II. Component Function Cooling Fan F2. Blank Plates Section Installation UnloadingParts List for Series PS528 Electric Oven Installation KIT Single and Double Stack OvensModel PS528 Single Oven Dimensions Model PS528 Double Oven Dimensions Model 528 Triple Oven Dimensions II. Ventilation Guidelines Electric Supply to be Provided by Customer Circuit BreakerIV. Electric Supply for Electrically Heated Ovens 10. Typical Electric Oven Data PlateSection Installation Section Operation Control FunctionsDoor Safety Switch Blower SwitchHeat Switch Temperature ControllerConveyor Measuring Conveyor SpeedSee Figures 3-4 Startup Procedures Daily Startup Power FailureShutdown Procedure III. STEP-BY-STEP OperationControl Panel Daily Startup Procedure IV. Normal Operation STEP-BY-STEPSP Lock Quick Reference Troubleshooting SymptomSection Maintenance Maintenance Daily ExteriorCooling Fan Conveyor Belt FigureRemoving Conveyor From Oven For Cleaning II. Maintenance MonthlyQuantity Air Fingers Disassembly For Cleaning T1 T2 T3 B1 B2 B3 Reassembly of Air Fingers 12. Standard Lower FingerExtended Lip Tab on Outer Plate Flange Finger Manifold Incorrect Too 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 MonthsImportant Notices Electrical TerminalsKEY Spare Parts KIT PS528-SERIES Electric Oven KEY Spare Parts KIT FigureSection Troubleshooting Problem Oven does not HeatSection Troubleshooting Parts List English Single Oven Exploded View English Relay Panel English Blower Assembly English Control Panel English Single Conveyor Section Parts List Section Electrical Schematics Wiring Diagram, E208-240V 50/60/3, PS528 P/N 62309 REV B Wiring Diagram, E380-480V 50/60/3, PS528 P/N 62310 REV B Wiring Diagram, E380V 50/60/3 CE PS528 P/N 63969 REV B Section Electrical Schematics