Page 2 - ii; FOR YOUR SAFETY, DO NOT STORE OR USE; WARNING; or maintenance can cause property damage, injury, or; The warranty is; unless; repairs. A Service Agency Directory is supplied with your oven.
ii WARNING FOR YOUR SAFETY, DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. WARNING Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operation,...
Page 3 - iii; MIDDLEBY MARSHALL INC.; MIDDLEBY MARSHALL; uibble
iii MIDDLEBY MARSHALL INC. OVEN LIMITED WARRANTY (Non U.S.A.) The Seller warrants equipment manufactured by it to be free from defects in material and workmanship for which it is responsible. The Seller’s obligation under this warranty shall be limited to replacing or repairing, at Seller’s option, ...
Page 4 - iv; NOTE; Wiring Diagrams are in Section 7 of this Manual.; TABLE OF CONTENTS
iv NOTE Wiring Diagrams are in Section 7 of this Manual. The diagram for each oven is also on the lower inner surface of its Control Console. TABLE OF CONTENTS Page SECTION 1 I. MODEL IDENTIFICATION ...............................................1 SERIES PS528 ELECTRICAL SPECIFICATIONS ................
Page 5 - I. MODEL IDENTIFICATION; SECTION 1
SECTION 1 DESCRIPTION 1 I. MODEL IDENTIFICATION The Middleby Marshall PS528-Series may be used either as a single oven or stacked for use as double or triple ovens. A single PS528-Series Oven (Figure 1-1) is mounted on a base pad with legs. A double oven (Figure 1-2) consists of two, stacked , singl...
Page 6 - PS528 SERIES OVEN SPECIFICATIONS; Wiring Diagrams are contained in Section 7 of this Manual; This Manual Must Be Kept For Future Reference
2 SECTION 1 DESCRIPTION PS528 SERIES OVEN SPECIFICATIONS Conveyor Belt Width 18.00" (457mm) Heating Zone Length 28.00" (711mm) Baking Area Square Feet 3.5 sq. ft. (0.33 sq. m.) Overall Dimension Standard Single Oven w/Legs 50.00" (1270mm) L × 40.75" (1035mm) W × 21.72" (786mm) H ...
Page 8 - II. COMPONENT FUNCTION; A. Conveyor Motor and Conveyor Belt; the air fingers. The BLOWER switch must be set; Inner Plate; Components; Blower Assembly
4 SECTION 1 DESCRIPTION II. COMPONENT FUNCTION (Figure 1-4) II. COMPONENT FUNCTION A. Conveyor Motor and Conveyor Belt The conveyor belt is driven by a variable-speed electric motor (Figure 1-5) operating through a gear reducer. The motor speed is controlled by a digital control. The stainless-steel...
Page 11 - SECTION 2; The oven, when installed, must be electrically; There must be adequate clearance between; Do not obstruct the flow of ventilation air to and; CAUTION; apparent damage is found, make arrangements to file a
SECTION 2 INSTALLATION 7 SECTION 2 INSTALLATION NOTE: The oven, when installed, must be electrically grounded in accordance with local codes, or in the absence of local codes, with the National Electrical Code (NEC), or ANSI/NFPA70. NOTE There must be adequate clearance between the oven and any adja...
Page 13 - Figure 2-5. MODEL PS528 SINGLE OVEN DIMENSIONS; The Opening Height is Adjustable from 2-1/4 inch minimum
SECTION 2 INSTALLATION 9 Figure 2-5. MODEL PS528 SINGLE OVEN DIMENSIONS The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments. 1 1
Page 14 - Figure 2-6. MODEL PS528 DOUBLE OVEN DIMENSIONS
10 SECTION 2 INSTALLATION Figure 2-6. MODEL PS528 DOUBLE OVEN DIMENSIONS The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments. 1 1
Page 15 - Figure 2-7. MODEL 528 TRIPLE OVEN DIMENSIONS
SECTION 2 INSTALLATION 11 Figure 2-7. MODEL 528 TRIPLE OVEN DIMENSIONS The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments. 1 1
Page 16 - DO NOT USE CONDUIT OR GAS LINE; IT IS RECOMMENDED THAT THE OVEN; UTILITY ROUGH-IN DIMENSIONS AND POSITIONING; Installation; UNIT MUST HAVE AIR VENT PLATES; II. VENTILATION GUIDELINES
12 SECTION 2 INSTALLATION WARNING DO NOT USE CONDUIT OR GAS LINE FOR GROUND CONNECTION. CAUTION IT IS RECOMMENDED THAT THE OVEN BE PLACED UNDER A VENTILATION HOOD FOR ADEQUATE AIR SUPPLY AND VENTILATION. ELECTRIC SUPPLY TO BE PROVIDED BY CUSTOMER CIRCUIT BREAKER Separate circuit breaker with lockout...
Page 17 - Middleby Technical; III. ELECTRICAL CONNECTION INFORMATION; (refer to the data plate for the ampere specifications).; Figure 2-10. Typical Electric Oven Data Plate
SECTION 2 INSTALLATION 13 These ‘C’ Channel brackets are installed in the vertical plane using existing screws (Item 6) to support these ‘C’ Channels using the upper and lower Key Hole openings in the ‘C’ Channels. The ‘C’ Channels are identical and once installed will allow ample amounts of air thr...
Page 18 - NOTES
Page 19 - SECTION 3
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...
Page 20 - II. COMPONENT INFORMATION AND; A. Door Safety Switch; D. Temperature Controller; Figure 3-2. Interior View of Control Console
16 SECTION 3 OPERATION 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 side of control panel opening. Opening the control panel door permits this switch to open, disconnecting power to all electrical controls. CA...
Page 21 - MEASURING CONVEYOR SPEED.; Figure 3-3. Conveyor Speed Digital Control
SECTION 3 OPERATION 17 E. Conveyor The on-off switch for the conveyor motor is on the con- trol panel. Also on the control panel is the digital con- veyor speed control. The digital control can be adjusted f r o m 1 - 1 0 m i n . b a k e t i m e ( c o n v e y o r s p e e d ) . Refer to Figure 3-3.Co...
Page 22 - OVEN MUST BE KEPT CLEAR OF; IMPORTANT NOTE
18 SECTION 3 OPERATION WARNING OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES. III. STEP-BY-STEP OPERATION A. Startup ProceduresDaily Startup 1. Turn the BLOWER switch (Figure 3-6) to the “ON” or “I” position. This starts the main blower fan and the cooling fans. The blower circulates air thro...
Page 24 - A.Daily Startup Procedure; or
20 SECTION 3 OPERATION 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 pro-cedure. IF THE OVEN WAS SWITCHED OFF FOR LESS THAN 5 MINUTES, WAIT FOR AT LEAST FIVE MINUTES BEFORE...
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 locked out from changes. This setting can only be changed by service personnel. OVERTEMP Light Lights when the oven temperatur...
Page 26 - SYMPTOM
22 SECTION 3 OPERATION V. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION The oven temperature ex- ceeded 650°F (343°C), and the burner was automatically shut down. • Follow the procedures under Daily Shutdown Procedures in this section to shut down the oven. Contact your Middleby Marshall...
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 disas- semble, clean or service oven(s). Never disassemble or clean the oven with...
Page 28 - Crumb Pan Cleaning; Crumb pan is extremely hot while oven
24 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 T...
Page 29 - the aluminized finger manifold surfaces.
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 of bak- ing. To clean the interior, you have to disassemble some parts of the oven. When cleaning your Series PS528 Oven note the following: PREC...
Page 30 - Lift other side of conveyor and push toward other; Be careful not to bump the drive sprocket; B. Air Fingers Disassembly For Cleaning
26 SECTION 4 MAINTENANCE 5. Lift other side of conveyor and push toward other side.6. Remove conveyor as shown. 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. B. Air Fingers Disassembly For Cleaning Figure 4-4...
Page 31 - Standard Fingers
SECTION 4 MAINTENANCE 27 1. As the air fingers are removed use a felt pen to mark all parts of the fingers. This includes the finger manifold, inner plate and the outer plate (refer to Figure 1-9). If a blank or choke plate is used, mark that plate also. Fingers are marked in the order shown; as vie...
Page 32 - C. Reassembly of Air Fingers
28 SECTION 4 MAINTENANCE 6. To remove the inner plate, pull the plate out and then up . Figure 4-11. 7. The outer finger plate is stainless and may be cleaned by either soaking in a hot, strong detergent solution or using a caustic cleaner. The conveyor belt can also be cleaned in the same way. Figu...
Page 33 - Replace the air fingers by pushing in at the back side.
SECTION 4 MAINTENANCE 29 4. Replace the air fingers by pushing in at the back side. Remember to replace them according to the numbers marked on them when they were removed. They must go back in the same way they came out. IMPORTANT: When inserting fingers the tab on the outer plate must be in the gr...
Page 34 - Install fingers and blank plates correctly with edges
30 SECTION 4 MAINTENANCE 5. Install fingers and blank plates correctly with edges interlocked and no space between edges. Figure 4-18. Top Finger Incorrect - Too Much Space Blank Plate Tab on Outer Plate of Finger Located in Groove Top Finger Incorrect - Too Much Space Blank Plate Tab on Outer Plate...
Page 35 - D. Reinstall End Plugs; Reinstall lower end plug. Be sure to tighten the wing
SECTION 4 MAINTENANCE 31 D. Reinstall End Plugs 1. Reinstall lower end plug. Be sure to tighten the wing screw on the end plug.2. Reinstall conveyor.3. Reinstall upper end plug. Be sure to tighten two wing screws on the end plug. Figure 4-19. Figure 4-20.
Page 36 - F. Checking Conveyor Belt Tension; E. Conveyor Reassembly Into Oven
32 SECTION 4 MAINTENANCE F. Checking Conveyor Belt Tension WARNING Oven conveyor belt must be cool when adjusting belt. Do not adjust belt if HOT. 1. With the conveyor assembly in the oven, stand at one end of conveyor and check tension by lifting the conveyor belt at the center of the oven chamber ...
Page 37 - G. Conveyor Belt Link Removal
SECTION 4 MAINTENANCE 33 G. Conveyor Belt Link Removal 1. Using long nose pliers, an entire link can be removed with the conveyor assembly either in or out of the oven. Position master links at end of conveyor as shown in Figure 4-24. Figure 4-24. 2. Using long nose pliers, unhook master links at le...
Page 38 - H. Attaching Drive Chain; it into the conveyor drive shaft. Be sure flat on end of
34 SECTION 4 MAINTENANCE H. Attaching Drive Chain 1. If drive sprocket assembly was removed reassemble it into the conveyor drive shaft. Be sure flat on end of drive shaft aligns with set screw in conveyor shaft collar. Once in place tighten 3/32 ″ set screw. 2. Lift conveyor and install drive chain...
Page 39 - A. Electrical Terminals; • Installation of replacement parts requiring access
SECTION 4 MAINTENANCE 35 4. Reattach conveyor guard to control panel and secure two screws.Install both upper end plugs. Figure 4-34. III. MAINTENANCE - EVERY 3 MONTHS WARNING Shut OFF all electrical power and lock/tag out the switch before attempting maintenance work. NOTE: It is recommended that t...
Page 40 - KEY SPARE PARTS KIT; ITEM
36 SECTION 4 MAINTENANCE KEY SPARE PARTS KIT An oven can be purchased with a Key Spare Parts Kit (Figure 4-36). (The kit can be purchased when the oven is ordered, or later, from a Middleby Marshall Authorized Parts Distributor). The kit contains many of the crucial parts that can reduce serious dow...
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 - ENGLISH; SECTION 6; SECTION 6 - PARTS LIST
39 ENGLISH SECTION 6 PARTS LIST SECTION 6 - PARTS LIST
Page 45 - SINGLE OVEN EXPLODED VIEW
41 ENGLISH SECTION 6 PARTS LIST SINGLE OVEN EXPLODED VIEW ITEM QTY PART NO. DESCRIPTION 1 1 48382 UPPER LH END PLUG ASSEMBL Y (INCLUDES ITEM 5 EYEBROW) 2 1 48387 LOWER LH END PLUG ASSEMBL Y 3 1 48408 LOWER RH END PLUG ASSEMBL Y 4 1 48412 UPPER RH END PLUG ASSEMBL Y (INCLUDES ITEM 6 EYEBROW) 5 1 6234...
Page 47 - RELA
43 ENGLISH SECTION 6 PARTS LIST RELA Y P ANEL ITEM QTY PART NO. DESCRIPTION 1 1 33812-5 THERMOCOUPLE, TYPE “J”, SHIELDED 2.50X120” 2 1 63909 SWITCH, INTERLOC k , 12A, NO2P 3 1 44914 CONTROLLER, 208-240V 3 1 44568 CONTROLLER, 380-480V 4 1 63931 ELEMENT , HEA TING, 480V 12 kW 4 1 63930 ELEMENT , HEA T...
Page 49 - BLOWER
45 ENGLISH SECTION 6 PARTS LIST BLOWER ASSEMBL Y ITEM QTY PART NO. DESCRIPTI ON 1 1 63909 SWITCH, MOMENT AR Y-12A, NO 2 POLE 2 2 30927 BUMPER, WINDOW 3 1 51399 FAN, COOLING, 230V AC, 295 CFM 4 2 62106 MOT OR, BLOWER, CW , 208/230 50/60HZ 5 2 57258 PLA TE, AIR VENT 6 4 7007413 SCR, SHOULDER 10-32X, 3...
Page 51 - CONTROL
47 ENGLISH SECTION 6 PARTS LIST CONTROL P ANEL ITEM QTY PART NO. DESCRIPTION I 3 46521 KIT BLOWER SWITCH CONT AINS ((1) 44697, (1) 44696)) 2 3 44697 CONT ACT BLOCK 3 3 44696 SELECT OR SWITCH 4 1 60542 CONVEYOR SPEED CONTROL W/DIGIT AL SPEED DISPLA Y 5 1 37503 DIGIT AL SPEED CONTROL (DISPLA Y ONL Y) ...
Page 53 - SINGLE CONVEYOR
49 ENGLISH SECTION 6 PARTS LIST SINGLE CONVEYOR ITEM OTY PART NO. DESCRIPTION 1 1 61734 WELDMENT 2 4 59264 BEARING, RULON 3 1 62295 SHAFT , DRIVE 4 1 59271 SHAFT , IDLER 5 10 M4818 SPROC k ET , WIRE BEL T 6 1 63949 BEL T, WIRE, STN STL 18" X 7.5` LONG 7 1 50060 LINK, MASTER LEFT 1/2P-18” 8 1 500...
Page 55 - SECTION 7
51 SECTION 7 ELECTRICAL SCHEMATICS SECTION 7 ELECTRICAL SCHEMATICS Wiring Diagram, E208-240V 50/60/1, PS528 • P/N 62311 REV B
Page 60 - can cause property damage, injury or death. Read the installation,; relieves 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 Equipment Service Association (CFESA). We recognize and applaud CFESA's ongoing efforts to improve the quality of tech...
