Middleby Marshall Model PS536 Service Manual

1© 2002 Middleby Marshall, Inc. is a registered trademark of Middleby Marshall, Inc. All rights reserved.Middleby Cooking Systems Group  1

15SECTION 3 - SERVICING COMPONENTSFigure 16Current pickup assembly - side viewFigure 17Current pickup assembly -end viewD. Controller/Motor FailureWhe

54SECTION 3 - SERVICING COMPONENTSIV. THERMOCOUPLESAll temperature controller and high limit functions are basedon input from thermocouples. When two

55SECTION 3 - SERVICING COMPONENTS2. Checking the thermocouple with a DC millivolt meterIt is possible to check that a thermocouple is readingaccurate

93SECTION 3 - SERVICING COMPONENTSD. Pilot/Ignitor AssemblyThe pilot assembly is attached to the end of the pilot line.It consists of an ignitor elect

943. Pilot and Proof of Pilot FlameRectificationWith standing pilots, heat isa necessary ingredient forproper thermocouple opera-tion. But this is

95SECTION 3 - SERVICING COMPONENTSE. Burner Blower MotorThe burner blower motor is located on the side or top of theburner housing. Some blowers use

97SECTION 3 - SERVICING COMPONENTSDigital TemperatureControllerMUST BE SET TO PIDOPERATING MODEAmplifier BoardModulating ValveTo thermocouplewhite +r

98M. Combination Gas Control Valve1. Part Number Reference - Combination Gas Valve PS360WB70 and PS360EWB ovens are equipped witha 3/4 (19.05mm) gas

99N. Ignition Module1. Part Number Reference - Ignition Module PS360WB70 and PS360EWB ovens equipped with theMidco burner use Ignition Module P/N 315

172SECTION 5 - REFERENCE25-point preventative maintenance checklist[ ] 1. Check and clean (blow out) machinery/control compartment.[ ] 2. Check an

2Section 1 - Sequence of Operation ...4I. Gas Oven Sequence of Operation ...

4PFBD112206 11-22-06

5PFBD112206 11-22-06

11PFBD112206 11-22-06Trouble Shooting Middleby Conveyor OvensQuick Check listModulating Gas Valve• Is Temperature Controller in PID mode?• Confirm yo

Middleby is proud to support the Commercial FoodEquipment Service Association (CFESA). Werecognize and applaud CFESA’s ongoing efforts toimprove the q

3III. High Li mi t C ontrol Module ... 45A. Part Number Reference - High Limit Control Modules

4I. GAS OVEN SEQUENCE OF OPERATIONA. Electrical SupplyGas heated ovens operate on 208/240V, single phase.Standard incoming power configurations are:1.

5e. For ovens with an On-Off gas regulation sys-tem (with solenoid valve): Temperature Controllerterminals 4 & 5 (power for the primary relayconta

6ll. ELECTRIC OVEN SEQUENCE OF OPERATIONA. Electrical SupplyMost electrically heated ovens operate on a 208/230/380/440V, 3 phase, 4 wire system. The

7SECTION 2AIR FLOW AND HEAT TRANSFERI. TYPES OF HEAT TRANSFERHeat constantly moves from a warm object to a cold ob-ject. Heat moves in three differen

8B. PS360-series ovensPS360-series ovens feature two blower motors. A blowerwheel is fastened onto the end of the motor shaft. Inorder to adjust the

12IV. OVEN CAPACITYOven capacity is generally not a service issue. However,when reporting a service problem, customers may use termsrelating to capac