Page 2 - ii; FOR YOUR SAFETY, DO NOT STORE OR USE; WARNING; The warranty is; unless; repairs. A Ser vice Agency Directory is supplied with your oven.
ii WARNING FOR YOUR SAFETY, DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS ANDLIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. WARNING Improper installation, adjustment, alteration, service, ormaintenance can cause property damage, injury, ordeath. Read the installation, operation, an...
Page 3 - iii; MIDDLEBY MARSHALL INC.; UIBBLE; NLY
iii MIDDLEBY MARSHALL INC. OVEN LIMITED WARRANTY (Non U.S.A.) The Seller warrants equipment manufactured by it to be free fromdefects in material and workmanship for which it is responsible. TheSeller’s obligation under this warranty shall be limited to replacing orrepairing, at Seller’s option, wit...
Page 4 - iv; NOTE; side control box door.; TABLE OF CONTENTS
iv NOTE Wiring Diagrams are in Section 6 of this Manual.The diagram for each oven is also inside the left side control box door. TABLE OF CONTENTS Page SECTION 1 I. MODEL IDENTIFICATION .............................................. 1SERIES PS724 ELECTRIC SPECIFICATIONS ................. 2II. COMPON...
Page 5 - MODEL IDENTIFICATION; SECTION 1
SECTION 1 DESCRIPTION 1 I. MODEL IDENTIFICATION The Middleby Marshall PS724-Series may be usedeither as a single oven or stacked for use as double ortriple ovens. A single PS724-Series Oven (Figure 1-1) can be mountedon an insulated base with short legs for countertop use,or on a leg stand with a lo...
Page 6 - Wiring Diagrams are contained in Section 6 of this Manual; This Manual Must Be Kept For Future Reference.; PS724 SERIES OVEN SPECIFICATIONS
2 SECTION 1DESCRIPTION NOTE Wiring Diagrams are contained in Section 6 of this Manual and are also located inside inside the left side control box door. Additional electrical information is provided on the oven's serial plate. This Manual Must Be Kept For Future Reference. PS724 SERIES OVEN SPECIFIC...
Page 8 - An Air Finger Assembly is made up of three parts:; Inner Plate; -The perforated Inner Plate is vital in forming; Components; Blower Assembly
4 SECTION 1DESCRIPTION II. COMPONENT FUNCTION (Figure 1-4) A. Conveyor Motor and Conveyor Belt The conveyor belt is driven by a variable-speed electricmotor (Figure 1-5) operating through a gear reducer.The motor speed is controlled by a digital control. Thestainless-steel wire belt can travel in ei...
Page 11 - installed shall not affect the air supply to the oven.; requirements and guidelines provided in this manual.; SECTION 2
SECTION 2 INSTALLATION 7 WARNING Do not obstruct the flow of combustion and ventilation air to and from your oven. There must be no obstructions around or underneath the oven. Constructional changes to the area where the oven is installed shall not affect the air supply to the oven. CAUTION For addi...
Page 12 - The oven, when installed, must be electrically; CAUTION
8 SECTION 2INSTALLATION NOTE: The oven, when installed, must be electrically grounded in accordance with local codes, or in the ab-sence of local codes, with the National Electrical Code(NEC), or ANSI/NFPA70. NOTE There must be adequate clearance betweenthe oven and any adjacent combustible con-stru...
Page 14 - Figure 2-5. MODEL PS724 SINGLE OVEN DIMENSIONS
10 SECTION 2INSTALLATION Figure 2-5. MODEL PS724 SINGLE OVEN DIMENSIONS
Page 15 - Figure 2-6. MODEL PS724 DOUBLE OVEN DIMENSIONS
SECTION 2 INSTALLATION 11 Figure 2-6. MODEL PS724 DOUBLE OVEN DIMENSIONS
Page 16 - Figure 2-7. MODEL PS724 TRIPLE OVEN DIMENSIONS
12 SECTION 2INSTALLATION Figure 2-7. MODEL PS724 TRIPLE OVEN DIMENSIONS
Page 17 - DO NOT USE CONDUIT FOR; See breaker sizing requirements below:; UTILITY ROUGH-IN DIMENSIONS AND POSITIONING; Installation
SECTION 2 INSTALLATION 13 WARNING DO NOT USE CONDUIT FOR GROUND CONNECTION. CAUTION IT IS RECOMMENDED THAT THE OVENBE PLACED UNDER A VENTILATIONHOOD FOR ADEQUATE AIR SUPPLYAND VENTILATION. ELECTRIC SUPPLY TO BE PROVIDED BY CUSTOMER CIRCUIT BREAKER A seperate circuit breaker with lockout/tagout elect...
Page 18 - The electric supply installation must satisfy the; Figure 2-10. Typical Electric Oven Data Plate; International CE Plate
14 SECTION 2INSTALLATION III. ELECTRICAL CONNECTION INFORMATION FOR PS724-SERIES OVENS. WARNING A u t h o r i z e d s u p p l i e r p e r s o n n e l n o r m a l l y a c -c o m p l i s h t h e c o n n e c t i o n s f o r t h e v e n t i l a t i o ns y s t e m , e l e c t r i c a n d g a s s u p p l ...
Page 19 - SECTION 3
SECTION 3 OPERATION 15 SECTION 3 OPERATION I. CONTROL FUNCTIONS WARNING A possibility of injury from rotating parts andelectric shock exists in this oven.Never disassemble or clean the oven with theBLOWER switch or any other oven control turned“ON” or “I”. Turn “OFF” or “O” and lockout ortagout all ...
Page 20 - II. COMPONENT INFORMATION AND; A. Door Safety Switch; D. Temperature Controller; Figure 3-2. Interior View of Control Console
16 SECTION 3OPERATION II. COMPONENT INFORMATION AND LOCATION (Figures 3-1 and 3-2) A. Door Safety Switch The Door Safety Switch is located at the lower right sideof control panel opening. Opening the control panel doorpermits this switch to open, disconnecting power to allelectrical controls, except...
Page 21 - MEASURING CONVEYOR SPEED.; conveyor running right to left.; Figure 3-3. Conveyor Speed Digital Control
SECTION 3 OPERATION 17 E. Conveyor The on-off switch for the conveyor motor is on the controlpanel. Also on the control panel is the digital conveyorspeed control. The digital control can be adjustedfrom 30 seconds to 12 minutes bake time (conveyorspeed). Refer to Figure 3-3. Conveyor speed is measu...
Page 22 - For complete temperature controller operation
18 SECTION 3OPERATION WARNING OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES. III. STEP-BY-STEP OPERATION A. Startup Procedures Daily Startup 1. Turn the BLOWER switch (Figure 3-6) to the “ON” or “I”position. This starts the main blower fan and the coolingfans. The blower circulates air throug...
Page 24 - A.Daily Startup Procedure; DAILY SHUTDOWN PROCEDURE; or
20 SECTION 3OPERATION (%!4#/.6%9/2 (%!4#/.6%9/2 (%!4#/.6%9/2 CAUTION In case of power failure, turn all switches to the “OFF” ("O") position and remove the product. After the power has been restored, perform the normal startup procedure. IF THE OVEN WAS SWITCHED OFF FOR LESS THAN 5 MINUTES, ...
Page 25 - Service use
SECTION 3 OPERATION 21 Display Shows the Set Point or the Actual Tem- perature in degrees Fahrenheit (F) or Celsius (C). "SP LOCK" Light Lights when the set point is lockedout from changes. This setting can only be changed by service personnel. OVERTEMP Light Lights when the oven temperature...
Page 27 - SECTION 4; NOTICE
SECTION 4 MAINTENANCE 23 SECTION 4 MAINTENANCE WARNING Possibility of injury from rotating parts and electrical shock exist in this oven. Turn off and lockout or tagout electrical supply to oven(s) before attempting to disassemble, clean or service oven(s). Never disas- semble or clean the oven with...
Page 28 - IMPORTANT NOTE; Crumb Pan Cleaning
24 SECTION 4MAINTENANCE I. MAINTENANCE - DAILY A. Exterior Everyday you should clean the outside of the oven with asoft cloth and mild detergent. WARNING Never use a water hose or pressurized steamcleaning equipment when cleaning the oven. B. Cooling Fan 1. TWO COOLING FAN GRILLES AT THE REAR OFTHE ...
Page 29 - The oven interior may require cleaning more; Loosen two screws and remove chain/sprocket cover
SECTION 4 MAINTENANCE 25 Figure 4-3. II. MAINTENANCE - MONTHLY NOTE: The oven interior may require cleaning more than once a month depending on the volume ofbaking. To clean the interior, you have to disassemblesome parts of the oven. When cleaning your Series PS724 Oven note thefollowing: PRECAUTIO...
Page 30 - Be careful not to bump the drive sprocket while
26 SECTION 4MAINTENANCE 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. ,OOSEN4WO3CREWSAND 2EMOVE#HAIN3PROCKET#OVER Figure 4-4. Figure 4-5.
Page 31 - B. Air Fingers Disassembly For Cleaning; Standard Fingers; Some oven users require a custom finger arrange-
SECTION 4 MAINTENANCE 27 B. Air Fingers Disassembly For Cleaning 1. As the air fingers are removed use a felt pen to mark allparts of the fingers. This includes the finger manifold, innerplate and the outer plate (refer to Figure 1-9). Fingers aremarked in the order shown; as viewed from the front o...
Page 32 - C. Reassembly of Air Fingers
28 SECTION 4MAINTENANCE Figure 4-11. Standard Lower Finger Figure 4-12. Standard Upper Finger C. Reassembly of Air Fingers 1. Air fingers are made up of one inner plate, one outerplate and the finger housing manifold. Be sure to match upthe markings (T1, T2, T3, etc.) on all the parts of the airfing...
Page 34 - D. Reinstall End Plugs; secure plastic wing nuts on the end plug.
30 SECTION 4MAINTENANCE D. Reinstall End Plugs 1. Reinstall lower end plug (has flange that extends intooven). Place and secure plastic wing nuts on the end plug. 2. Reinstall conveyor. 3. Reinstall upper end plug (no inner flange). Place and secure plastic wing nuts on the end plug. 2EMOVABLE #ONVE...
Page 35 - F. Checking Conveyor Belt Tension; E. Conveyor Reassembly Into Oven; Lift conveyor and position it in oven as shown.
SECTION 4 MAINTENANCE 31 F. Checking Conveyor Belt Tension WARNING Oven conveyor belt must be cool when adjustingbelt. Do not adjust belt if HOT. 1. With the conveyor assembly in the oven, stand at oneend of conveyor and check tension by lifting the conveyorbelt at the center of the oven chamber ope...
Page 36 - G. Conveyor Belt Link Removal; If a section of the conveyor belt is being replaced
32 SECTION 4MAINTENANCE G. Conveyor Belt Link Removal 1. Using long nose pliers, an entire link can be removedwith the conveyor assembly either in or out of the oven.Position master links at end of conveyor as shown inFigure 4-22. Figure 4-22. 2. Using long nose pliers, unhook master links at left e...
Page 37 - H. Attaching Drive Chain; Push and hold conveyor end down to reinstall the
SECTION 4 MAINTENANCE 33 H. Attaching Drive Chain 1. If drive sprocket assembly was removed reassemble itinto the conveyor drive shaft. Be sure flat on end of driveshaft aligns with set screw in conveyor shaft collar. Oncein place tighten 3/32 ″ set screw. 2. Push and hold conveyor end down to reins...
Page 38 - It is recommended that the 3-month and 6-month; • Installation of replacement parts requiring access
34 SECTION 4MAINTENANCE 4. Reattach conveyor guard to control panel and securetwo screws. 5. Install both upper end plugs. Figure 4-32. III. MAINTENANCE (3 and 6 MONTH) WARNING Shut OFF all electrical power and lock/tag out theswitch before attempting maintenance work. NOTE: It is recommended that t...
Page 39 - PS724-SERIES ELECTRIC OVEN KEY SPARE PARTS KIT; KEY SPARE PARTS KIT
SECTION 4 MAINTENANCE 35 Figure 4-33. PS724-SERIES ELECTRIC OVEN KEY SPARE PARTS KIT ITEM PART NO. ENGLISH DESCRIPTION QUANTITY 1 4 4 5 4 9 Contactor, 230V, Coil 85A 1 2 5 9 5 5 8 Motor, Blower 1 3 60520-2 Thermocouple, Type “J” 2.00 ″ (Temperature Control) 2 4 4 5 2 4 4 Filter, RFI (380 VAC version...
Page 40 - NOTES
Page 41 - SECTION 5
37 SECTION 5 TROUBLESHOOTING SECTION 5 TROUBLESHOOTING PROBLEM: PRODUCTS ARE OVERCOOKED OR UNDERCOOKED Check for correct setting of conveyor speed control. Set the conveyor speed control at correct setting. Check for correct setting on tempera- ture controller. Turn temperature control to correct se...
Page 43 - SECTION 6
39 SECTION 6 ELECTRICAL SCHEMATICS SECTION 6 ELECTRICAL SCHEMATICS Wiring Diagram, E208-240V, PS724E 61567B
Page 48 - can cause property damage, injury or death. Read the installation,; the manufacturer of all warranty and liability.
Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • FAX (847)741-4406 www.middleby.com Middleby is proud to support the Commercial Food EquipmentService Association (CFESA). We recognize and applaudCFESA's ongoing efforts to improve the quality of techni...
