3D Connexion PS520G SECTION 4 MAINTENANCE I. MAINTENANCE - DAILY

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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).

WARNING

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.

D. Crumb Pans (Figure 4-2)

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.

Figure 4-2. Conveyor Belt and

Crumb Pan Cleaning

Figure 4-1. Oven Cooling Fans

WARNING

Crumb pan is extremely hot while oven

is operating. Allow oven to cool before

removing crumb pan.

Contents

Main Page iii MIDDLEBY MARSHALL INC. OVEN LIMITED WARRANTY (Non U.S.A.) Model No. Modle No. Serial No. Seri No. Installation Date Date d'installation MIDDLEBY MARSHALL No Quibble limited WarraNty (U.S.A. Only) iv TABLE OF CONTENTS TABLE OF CONTENTS (Continued) DESCRIPTION I. MODEL IDENTIFICATION SECTION 1 DESCRIPTION Figure 1-1. Single PS520 Oven Figure 1-2. Double PS520 Oven 2 SECTION 1 DESCRIPTION PS520 SERIES OVEN SPECIFICATIONS This Manual Must Be Kept For Future Reference. SERIES PS520 ELECTRICAL SPECIFICATIONS GAS ORIFICE AND PRESSURE SPECIFICATIONS (PER OVEN CAVITY) - CE OVENS Page SECTION 1 DESCRIPTION II. COMPONENT FUNCTION Figure 1-5. Machinery Compartment Components Blower Assembly Right Control Box Page Figure 1-7. Blank Plates (two sizes) and an Air Finger. SECTION 2 INSTALLATION SECTION 2 INSTALLATION PARTS LIST FOR SERIES PS520 GAS OVEN INSTALLATION KIT Single Stack Oven P/N 59182 Figure 2-1. PS520-Series Gas Oven Installation Parts CAUTION I. UNLOADING Page Page Page Page Page SECTION 2 INSTALLATION III. ELECTRICAL CONNECTION INFORMATION FOR PS520-SERIES OVENS. Figure 2-10. Typical Electric Oven Data Plate IV. ELECTRIC SUPPLY FOR GAS HEATED OVENS Figure 2-11. Junction Connection Box V. GAS SUPPLY CAUTION Page Page Page SECTION 3 OPERATION SECTION 3 OPERATION II. COMPONENT INFORMATION AND LOCATION (Figures 3-1 and 3-2) CAUTION Figure 3-2. Interior View of Control Console OPERATION MEASURING CONVEYOR SPEED. Figure 3-3. Conveyor Speed Digital Control Figure 3-4. Product at entrance end of baking chamber BEGINNING OF TIMING Figure 3-5. Product at exit end of baking chamber END OF TIMING SECTION 3 OPERATION WARNING III. STEP-BY-STEP OPERATION Page 24 SECTION 3 OPERATION CAUTION A.Daily Startup Procedure + or + wait or wait IMPORTANT Page SECTION 3 OPERATION V. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION SECTION 4 MAINTENANCE NOTICE WARNING SECTION 4 MAINTENANCE I. MAINTENANCE - DAILY Figure 4-1. Oven Cooling Fans Figure 4-2. Conveyor Belt and Crumb Pan Cleaning SECTION 4 MAINTENANCE Figure 4-3. II. MAINTENANCE - MONTHLY Page Standard Fingers Figure 4-8. Figure 4-9. Figure 4-10. T1 T2 T3 B1 B2 B3 Page Figure 4-17. 34 5. Install ngers and blank plates correctly with edges interlocked and no space between edges. Figure 4-18. Page Figure 4-23. Figure 4-21. Figure 4-22. Figure 4-24. Figure 4-25. Figure 4-26. Figure 4-27. Figure 4-28. Figure 4-32. Figure 4-33. Figure 4-31. Figure 4-29. Figure 4-30. SECTION 4 MAINTENANCE Figure 4-34. III. MAINTENANCE - EVERY 3 MONTHS Figure 4-35. IV. MAINTENANCE - EVERY 6 MONTHS SECTION 4 MAINTENANCE KEY SPARE PARTS KIT Figure 4-36. PS520-SERIES GAS OVEN KEY SPARE PARTS KIT (Figure 4-36) SECTION 5 TROUBLESHOOTING SECTION 5 TROUBLESHOOTING Page Page www.middleby.com WARNING