Middleby Marshall PS528 (Triple) manual

©2009 Middleby Marshall Inc. A MIDDLEBY COMP ANY PS528-Series Electric Ovens: English owner's operating & installation manual PS528-Series OVENS Model PS528E PS528 (T riple) PS528 (Double) Part No. 63934 Rev B Price $30.00 P: 08/09 PS528 (Single)[...]

ii W ARNING FOR YOUR SAFETY , DO NOT ST ORE OR USE GASOLINE OR OTHER FLAMMABLE V APORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. W ARNING Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury , or de ath . Read t he in st al la ti on , o pe ra ti on , a nd m ai nt en anc e instruc[...]

iii MIDDLEBY MARSHALL INC. OVEN LIMITED W ARRANTY (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, without charge, F .O.B. Seller ’s factory[...]

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. T ABLE OF CONTENTS Page SECTION 1 I. MODEL IDENTIFICA TION ...............................................1 SERIES PS528 ELECTRICAL SPECIFICA TIONS ..............2 II. COMPONENT FUNCTION .....................[...]

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 sing le PS528-Series Oven (Figure 1-1) is mounted on a base pad with legs. A double oven (Figure 1-2) consists of two, stacked , sing le ovens. A triple oven (Figure 1-3) consists of [...]

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 × Overall Dimension Double Oven 50.00"[...]

SECTION 1 DESCRIPTION 3 Figure 1-4. PS528-Series Oven Components Locations[...]

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 wire belt can travel in either direction at varia[...]

SECTION 1 DESCRIPTION 5 Figure 1-6. Cooling Fan[...]

6 SECTION 1 DESCRIPTION Figure 1-7. Blank Plates (two sizes) and an Air Finger. F2. Blank Plates 1. Blank Plates- The Blank Plates are available to install on the plenum where an air nger is not required.[...]

SECTION 2 INSTALLATION 7 SECTION 2 INSTALLATION NOTE: The oven, when installed, must be electrically gr ou nd ed in acco rd an ce wi th lo ca l code s, or in the ab se nc e of local codes, with the National Electrical Code (NEC), or ANSI/NFP A70. NOTE There must be adequate clearance between the oven and any adjacent combustible con- struction. Cle[...]

8 SECTION 2 INSTALLATION PARTS LIST FOR SERIES PS528 ELECTRIC OVEN INSTALLATION KIT Single and Double Stack Ovens P/N 63938 Figure 2-1. PS528-Series Electric Oven Installation Parts ITEM NO. QTY PART NO. DESCRIPTION 1 4 3101908 LEG 4 ″ AD FT 2 1 62208 INSULATION BOTTOM TRAY 3 1 62206 BOTTOM TRAY WELDMENT 4 1 61650 TOP COVER 5 4 51387 SCREW MSSLT [...]

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[...]

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[...]

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[...]

12 SECTION 2 INSTALLATION WARNING DO NOT USE CONDUIT OR GAS LINE FOR GROUND CONNECTION. CAUTION IT IS RECOMMENDED THA T THE OVEN BE PLA CE D UND ER A VE NTI LA TI ON HOOD FOR ADEQUA TE AIR SUPPL Y AND VENTILA TION. ELECTRIC SUPPLY TO BE PROVIDED BY CUSTOMER CIRCUIT BREAKER Separate circuit breaker with lockout/tagout electrical shutoff for each ove[...]

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 through the cooling fan mounted on th[...]

14 SECTION 2 INSTALLATION NOTES[...]

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 be[...]

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. CAUTION Do NOT touch the wires going to this safety [...]

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 from 1-10 min. bake time (conveyor speed). Refer to Figure 3-3. Conveyor speed is measured by the amount of time it takes for an item to go thro[...]

18 SECTION 3 OPERATION W ARNING OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES A T 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 cooling fans. The blower circulates air through the air ngers and must stay on d[...]

SECTION 3 OPERATION 19 Figure 3-6. Control Panel[...]

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 RESTARTING THE OVEN. A.Daily Startup Proce[...]

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 temperature is greater than 650°F (343°C). Refer to Quic[...]

22 SECTION 3 OPERATION V. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION The oven temperature ex- ceeded 650°F (343°C), and the burn er was auto mat ic all y shut down. • Follow the procedures under Daily Shutdown Procedures in this section to shut down the oven. Contact your Middleby Marshall Authorized Service Agent to determine an[...]

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 the blower switch or any other part of the oven t[...]

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 THE OVEN MUST BE CLEANED DAILY - Clean grille with [...]

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: PRECAUTIONS - 1. Do not use excessive water or saturat[...]

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. Figure 4-5.[...]

SECTION 4 MAINTENANCE 27 1. As the air ngers are removed use a felt pen to mark all parts of the ngers. This includes the nger 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 viewed from the front of the oven. (The marks for [...]

28 SECTION 4 MAINTENANCE 6. To remove the inner plate, pull the plate out and then up . Figure 4-11. 7. The outer nger 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. Figure 4-12. Standard Lower Finger Figure 4-13. Stand[...]

SECTION 4 MAINTENANCE 29 4. Replace the air ngers 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 ngers the tab on the outer plate must be in the groove as shown in Figure 4-18. There is a blockin[...]

30 SECTION 4 MAINTENANCE 5. Install ngers 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 of Finger Located in Groove Top Finger Correct -[...]

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.[...]

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 opening. The belt should not lift higher that 1 ?[...]

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 left end of conveyor as shown in Figure 4-25. Figure[...]

34 SECTION 4 MAINTENANCE H. Attaching Drive Chain 1. If drive sprocket assembly was removed reassemble it into the conveyor drive shaft. Be sure at 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 to conveyor drive sprocket and motor sprocket.[...]

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 the 3- month maintenance be performed by an author[...]

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 downtime and loss of pro- duction, if a failure occur[...]

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 setting. If products still cook incorrectly, call yo[...]

SECTION 5 TROUBLESHOOTING 38 NOTES[...]

39 ENGLISH SECTION 6 PARTS LIST SECTION 6 - PARTS LIST[...]

40 ENGLISH SECTION 6 PARTS LIST[...]

41 ENGLISH SECTION 6 PARTS LIST SINGLE OVEN EXPLODED VIEW ITEM QTY P ART 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 62347 EYEBROW , UPPER LH END PLUG ASSEMBL Y 6 1 62346[...]

42 ENGLISH SECTION 6 PARTS LIST[...]

43 ENGLISH SECTION 6 PARTS LIST RELA Y P ANEL ITEM QTY P ART NO. DESCRIPTION 1 1 33812-5 THERMOCOUPLE, TYPE “J”, SHIELDED 2.50X120” 2 1 63909 SWITCH, INTERLOCK, 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 TING, 380V 12 kW 4 1 63929 ELEMENT , HEA TING,[...]

44 ENGLISH SECTION 6 PARTS LIST[...]

45 ENGLISH SECTION 6 PARTS LIST BLOWER ASSEMBL Y ITEM QTY P ART NO. DESCRIPTI ON 1 1 63909 SWITCH, MOMENT ARY -12A, NO 2 POLE 2 2 30927 BUMPER, WINDOW 3 1 51399 F AN, COOLING, 230V AC, 295 CFM 4 2 62106 MOTOR, BLOWER, CW , 208/230 50/60HZ 5 2 57258 PLA TE, AIR VENT 6 4 7007413 SCR, SHOULDER 10-32X, 34 18-8 7 1 31497 GUARD, COOLING F AN (NOT SHOWN)[...]

46 ENGLISH SECTION 6 PARTS LIST[...]

47 ENGLISH SECTION 6 PARTS LIST CONTROL P ANEL ITEM QTY P ART NO. DESCRIPTION I 3 46521 KIT BLOWER SWITCH CONT AINS ((1) 44697, (1) 44696)) 2 3 44697 CONT ACT BLOCK 3 3 44696 SELECTOR SWITCH 4 1 60542 CONVEYOR SPEED CONTROL W/DIGIT AL SPEED DISPLA Y 5 1 37503 DIGIT AL SPEED CONTROL (DISPLA Y ONL Y) 6 1 50990 CONTROL, COMBO 4-20MA BURST 7 1 28041-00[...]

48 ENGLISH SECTION 6 PARTS LIST[...]

49 ENGLISH SECTION 6 PARTS LIST SINGLE CONVEYOR ITEM OTY P ART NO. DESCRIPTION 1 1 61734 WELDMENT 2 4 59264 BEARING, RULON 3 1 62295 SHAFT , DRIVE 4 1 59271 SHAFT , IDLER 5 10 M4818 SPROCKET , 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 50062 LINK, MASTER CENTER 1/2P-18” 9 1 50061 LIN[...]

50 ENGLISH SECTION 6 PARTS LIST NOTES[...]

51 SECTION 7 ELECTRICAL SCHEMATICS SECTION 7 ELECTRICAL SCHEMATICS Wiring Diagram, E208-240V 50/60/1, PS528 • P/N 62311 REV B[...]

SECTION 7 ELECTRICAL SCHEMATICS 52 Wiring Diagram, E208-240V 50/60/3, PS528 • P/N 62309 REV B[...]

53 SECTION 7 ELECTRICAL SCHEMATICS Wiring Diagram, E380-480V 50/60/3, PS528 • P/N 62310 REV B[...]

SECTION 7 ELECTRICAL SCHEMATICS 54 Wiring Diagram, E380V 50/60/3 CE PS528 • P/N 63969 REV B[...]

55 SECTION 7 ELECTRICAL SCHEMATICS NOTES[...]

Middleby Cooking Systems Group • 1400 T oastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • F AX (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 ef forts to improve the quality of technical service in the industry [...]