Middleby Marshall PS724-Series Owner'S Operating & Installation Manual Download Page 19 | Manualshive

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SECTION 3

OPERATION

15

SECTION 3

OPERATION

I. CONTROL FUNCTIONS

WARNING

A possibility of injury from rotating parts and
electric shock exists in this oven.
Never disassemble or clean the oven with the
BLOWER switch or any other oven control turned
“ON” or “I”. Turn “OFF” or “O” and lockout or
tagout all electric power to the oven before
attempting to clean or service this oven.

Figure 3-1. PS724-Series Oven Control Functions

4EMPERATURE

#ONTROLLER

3PEED
#ONTROL

(EAT#ONVEYOR

3WITCH

-AIN"LOWER

3WITCH

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Summary of Contents for PS724-Series

Page 1: ...iddleby Marshall Marshall Marshall Marshall Marshall AMIDDLEBYCOMPANY PS724 Series Electric Ovens English October 27 2008 owner s operating installation manual PS724 Series OVENS Model PS724E PS724 Tr...

Page 2: ...ce Agency to perform maintenance and repairs A Service Agency Directory is supplied with your oven NOTICE Using any parts other than genuine Middleby Marshall factory manufactured parts relieves the m...

Page 3: ...PECIFICALLY THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE The foregoing shall be Seller s sole and exclusive obligation and Buyer s sole and exclusive remed...

Page 4: ...Door Safety Switch 16 B Blower Switch 16 C Heat Switch 16 D Temperature Controller 16 E Conveyor 17 MEASURING CONVEYOR SPEED 17 TABLEOFCONTENTS Continued Page III STEP BY STEPOPERATION 18 A Startup Pr...

Page 5: ...sters for a free standing unit A double oven Figure 1 2 consists of two stacked single ovens A triple oven Figure 1 3 consists of three stacked single ovens The lower oven is mounted on an insulated b...

Page 6: ...Time 20 min Belt Speed Limits 0 30 12 00 SERIES PS724 ELECTRICAL SPECIFICATIONS DOMESTIC OVENS VOLTAGE PHASE HZ kW WIRING BREAKER POWER POWER SIZE CORD PLUG SPECIFICATION 208 3 60 14 4 STD 4 WIRE L1...

Page 7: ...SCRIPTION 3 Figure 1 4 PS724 Series Oven Components Locations 2EMOVABLE ONVEYOR SSEMBLY ASTERS 4EMPERATURE ONTROLLER 3PEED ONTROL EAT ONVEYOR 3WITCH AIN LOWER 3WITCH 2EMOVABLE ND 0LUG 5PPER 2EMOVABLE...

Page 8: ...ated at the rear of each left and right control box Cooling air is drawn into each control box and blown across the control components and circulating blower bearings and exits the oven front and rear...

Page 9: ...SECTION 1 DESCRIPTION 5 Figure 1 6 Cooling Fan OOLING AN RILLE OOLING AN RILLE 0OWER ABLE NTRANCE LOWER OTOR CCESS 0OWER ABLE NTRANCE LOWER OTOR CCESS ONNECTION LOCK CCESS...

Page 10: ...6 SECTION 1 DESCRIPTION Figure 1 7 Air Finger Outer Plate Inner Plate Finger Manifold Assembly Baffle...

Page 11: ...uthority NOTE CANADA INSTALLATION In Canada the oven installation must conform with local codes Installed ovens must be electrically grounded in accordance with local codes or in the absence of local...

Page 12: ...low of ventilation air to and from your oven Do not obstruct the fan holes in the rear of the unit I UNLOADING Your Middleby Marshall PS724 Series Oven is shipped partially assembled It will arrive in...

Page 13: ...braking casters Item 6 CE approved ovens include 4 non braking casters Item 6 SOLELY for the purpose of moving the oven to the installation location Casters are NOT suitable for use as part of CE oven...

Page 14: ...10 SECTION 2 INSTALLATION Figure 2 5 MODEL PS724 SINGLE OVEN DIMENSIONS...

Page 15: ...SECTION 2 INSTALLATION 11 Figure 2 6 MODEL PS724 DOUBLE OVEN DIMENSIONS...

Page 16: ...12 SECTION 2 INSTALLATION Figure 2 7 MODEL PS724 TRIPLE OVEN DIMENSIONS...

Page 17: ...OR PS724 SERIES OVENS SUPPLY WIRE Supply wire size must be in accordance with the National Electrical Code current edition and must be in compliance with local codes SUGGESTED If space permits service...

Page 18: ...fused disconnect switch or a main circuit breaker customer furnished MUST be installed in the electric supply line for each oven it is recommended that this switch circuitbreakerhavelockout tagoutcapa...

Page 19: ...this oven Never disassemble or clean the oven with the BLOWER switch or any other oven control turned ON or I Turn OFF or O and lockout or tagout all electric power to the oven before attempting to c...

Page 20: ...e oven is over 180 F 82 C the main blower will continue to run after the blower switch is turned to the OFF or O position C Heat Conveyor Switch The Heat ConveyorSwitch allowstheburnertoactivate Activ...

Page 21: ...the leading edge of the item to go from the entrance end of the baking chamber to the exit end This should be the conveyor speed shown on the conveyor speed digital control NOTE In Figures 3 4 and 3 5...

Page 22: ...controller operation instructions refer to Step C 5 Turn the HEAT CONVEYOR switch Figure 3 6 to the ON or I position Wait for the Heat ON light to turn on 6 Ovenwillreachabakingtemperatureof500 F 232...

Page 23: ...SECTION 3 OPERATION 19 Figure 3 6 Control Panel 4 6 9 2...

Page 24: ...hat the blowers will remain in operation until the oven has cooled to below 200 F 93 C IV NORMAL OPERATION STEP BY STEP 7 Wait for the oven to heat to the setpoint temperature Higher setpoint temperat...

Page 25: ...y Press this key together with the Set Point Key to allow the Set Point to be changed Changes can only be made for 60 seconds Up Arrow and Down Arrow Keys Press these keys to adjust the Set Point up o...

Page 26: ...BLOWER Switch is in the ON I position Turn the HEAT CONVEYOR and BLOWER switches to the OFF O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Startup procedure Che...

Page 27: ...ing procedure 1 Switch off the oven and allow it to cool Do NOT service the oven while it is warm 2 Turn off main circuit breakers and disconnect connector from oven 3 Move oven to desired location fo...

Page 28: ...HEOVEN REPLACETHE COOLING FAN BLADE BEFORE OPERATING OVEN Serious damage could be done to the burner blower motor and or solid state electrical components if the oven is operated while the cooling fan...

Page 29: ...n grease and carbon deposits use a non caustic cleaner that will not react with the aluminized finger manifold surfaces You can order non caustic cleaner from your local autho rizedMiddlebyMarshallPar...

Page 30: ...AINTENANCE Figure 4 6 Figure 4 7 CAUTION Be careful not to bump the drive sprocket while handling the conveyor to avoid damaging the drive shaft OOSEN 4WO 3CREWS AND 2EMOVE HAIN 3PROCKET OVER Figure 4...

Page 31: ...ucanremovetopandbottomfingers fromeachoreither end Itishighlyrecommendedthateachfingerbemarked before removing so it is placed in exactly the same position when reassembled refer to step 1 Removetheai...

Page 32: ...gure 4 13 2 Reassembletheinnerplate Keepyourfingersclearso you won t pinch them The inner plate of a finger will only go in one way because of its design 3 Replace the outer plate by placing your hand...

Page 33: ...SECTION 4 MAINTENANCE 29 5 Install fingers with center spacer between the two finger back plates to insure proper spacing Figure 4 16 Extended Lip Flange of Finger Manifold Center Spacer...

Page 34: ...replasticwingnutsontheendplug 2 Reinstall conveyor 3 Reinstall upper end plug no inner flange Place and secure plastic wing nuts on the end plug 2EMOVABLE ONVEYOR SSEMBLY ASTERS 4EMPERATURE ONTROLLER...

Page 35: ...ld not lift higher that 1 to 2 75mm to 102mm 2 If conveyor belt is still not under proper tension an entire link must be removed Use the following procedure H Conveyor Belt Link Removal to remove a li...

Page 36: ...nhook the link to be removed 5 Pull up on the belt link section and remove Do not discard the link removed as it may be used for making spare master links NOTE If a section of the conveyor belt is bei...

Page 37: ...the con veyor must be against the lower end plug This is true on both sides of oven Figure 4 31 6 Reconnect the inside master links Figure 4 27 Figure 4 27 NOTE The outside master links have right and...

Page 38: ...6 month maintenance items be performed by an authorized Middleby Marshall technician 2EPLACE HAIN 3PROCKET OVER AND NSERT AND 4IGHTEN 4WO 3CREWS IMPORTANT NOTICES Installation of replacement parts req...

Page 39: ...Element Htg 208V 7 2 KW PS724 1 16 60976 Element Htg 208V 8 7 KW PS724E 1 16 61571 Element Htg 240V 7 2KW PS724 1 16 61132 Element Htg 240V 8 7KW PS724E 1 16 60712 Element Htg 380V 7 2KW PS724 1 16 61...

Page 40: ...36 SECTION 4 MAINTENANCE NOTES...

Page 41: ...ng Refer to Section 4 procedure or call your Middleby Marshall Service Agency PROBLEM OVEN BLOWER AND CONVEYOR OPERATE YET THE OVEN IS NOT HEATING Start the oven again If the oven still does not heat...

Page 42: ...SECTION 5 TROUBLESHOOTING 38 NOTES...

Page 43: ...39 SECTION 6 ELECTRICAL SCHEMATICS SECTION 6 ELECTRICAL SCHEMATICS Wiring Diagram E208 240V PS724E 61567B...

Page 44: ...SECTION 6 ELECTRICAL SCHEMATICS 40 Wiring Diagram E380V 17 44 kW PS724E 61577B...

Page 45: ...41 SECTION 6 ELECTRICAL SCHEMATICS Wiring Diagram E380V 17 4 kW PS724E CE 61581B...

Page 46: ...SECTION 6 ELECTRICAL SCHEMATICS 42 Wiring Diagram 400 416V 4 kW PS724E7 61534B...

Page 47: ...43 SECTION 6 ELECTRICAL SCHEMATICS NOTES...

Page 48: ...damage injury or death Read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment NOTICE During the warranty period ALL parts replacement an...

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