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Middleby Marshall PS555 series User Manual

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Table of Contents

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Middleby Marshall PS555 series Specifications

General IconGeneral
ConstructionStainless steel
Frequency60 Hz
TypeConveyor Oven
Ventilation RequirementsRequired
Gas TypeNatural Gas or Propane (depending on model)

Summary

SECTION 1 - SEQUENCE OF OPERATION

I. GAS OVEN SEQUENCE OF OPERATION

Details the operational sequence for gas ovens, including electrical supply, door, conveyor, blower, and heat switches.

II. ELECTRIC OVEN SEQUENCE OF OPERATION

Details the operational sequence for electric ovens, covering electrical supply, door, conveyor, blower, heat, and high limit functions.

SECTION 2 - AIR FLOW AND HEAT TRANSFER

II. BLOWERS AND BLOWER SPEED

Covers blower types and speed adjustments for PS200, PS360, and PS555/570 oven series.

SECTION 3 - SERVICING COMPONENTS

I. CONVEYOR SPEED CONTROLLER AND DRIVE MOTOR

Covers part numbers and servicing for conveyor speed controllers and drive motors.

V. THERMOCOUPLES

Details thermocouple part numbers, functions, and troubleshooting procedures.

E. BASIC TROUBLESHOOTING FLOWCHARTS

Provides troubleshooting flowcharts for conveyor motor issues.

APPENDIX - INSTRUCTIONS FOR SERVICE KIT 42810-0133 - CONVEYOR SPEED CONTROLLER KIT WITH THUMBWHEEL, 4/95

Instructions for installing the conveyor speed controller kit with thumbwheel.

INSTRUCTIONS FOR SERVICE KIT 44756 - CONVEYOR SPEED CONTROLLER KIT FOR PS200R-SERIES OVENS, 2/02

Instructions for installing the conveyor speed controller kit for PS200R-series ovens.

II. TEMPERATURE CONTROLLER

Explains temperature controller functions, models, and PID operation.

APPENDIX - INSTRUCTIONS FOR SERVICE KIT 47321 - DIGITAL TEMPERATURE CONTROLLER KIT, 2/02

Installation instructions for the digital temperature controller kit.

III. HIGH LIMIT CONTROL MODULE

Covers high limit control modules for PS200/PS300-series ovens and their functions.

D. APPENDICES - INSTRUCTIONS FOR SERVICE KIT 39733 - HIGH LIMIT CONVERSION KIT FOR PS300, 310, 350 & 360 OVENS, 5/99

Instructions for a high limit conversion kit for PS300, 310, 350, and 360 ovens.

VI. BLOWERS

Covers PS200-series ovens blowers, including part numbers and drive assembly types.

VII. BURNER BLOWER MOTOR CENTRIFUGAL SAFETY SWITCH

Explains the centrifugal safety switch for burner blower motors.

VIII. AIR PRESSURE SAFETY SWITCH (PS200-series GAS, PS310, PS314, PS360, PS360EWB, PS360WB70)

Details air pressure safety switches for various gas oven models.

XI. PS360-series BURNER BLOWER MOTOR CENTRIFUGAL SAFETY SWITCH

Details the centrifugal safety switch for PS360-series burner blower motors.

APPENDIX - INSTRUCTIONS TO REPLACE AN "ALTERNATE" AIR SWITCH P/N 36194 WITH SERVICE KIT P/N 35624, 3/97

Instructions for replacing an alternate air switch with a specific service kit.

X. GAS TRAIN AND BURNER SYSTEM

Details gas train components and configurations for PS200-series ovens.

PS360EWB or PS360WB70 gas train with Midco burner

Diagrams and details of the gas train for specific oven models with Midco burners.

PS360EWB or PS360WB70 gas train with Wayne burner

Diagrams and details of the gas train for specific oven models with Wayne burners.

D. PILOT/IGNITOR ASSEMBLY

Describes the pilot/ignitor assembly and its safety circuit.

3. PROOF AND PILOT FLAME RECTIFICATION

Explains pilot flame proof and rectification for gas ovens.

E. BURNER BLOWER MOTOR

Covers burner blower motor operation, mounting, and safety switches.

M. COMBINATION GAS CONTROL VALVE

Details the combination gas control valve, its components, and adjustments.

N. IGNITION MODULE

Details the ignition module, its part numbers, and wiring.

P. TROUBLESHOOTING FLOWCHARTS

Provides troubleshooting flowcharts for intermittent pilot systems.

NO SPARK, SYSTEM DOES NOT WORK

Troubleshooting flowchart for no spark issues.

SPARK IS PRESENT, PILOT WILL NOT LIGHT

Troubleshooting flowchart for pilot light failure.

PILOT LIGHTS, MAIN VALVE WILL NOT COME ON

Troubleshooting flowchart for pilot lights and main valve issues.

VIII. GAS LEAK TEST

Procedures for performing a gas leak test after conversion.

XI. ELECTRIC OVEN HEATING SYSTEM

Covers PS200-series electric ovens, including heating elements and controls.

B. PS310/360-series OVENS

Details PS310/360-series ovens, including heating systems and controls.

C. PS555 OVENS

Covers PS555 ovens, including heating systems and element configurations.

SECTION 4 - ELECTRICAL WIRING DIAGRAMS

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