Middleby Cooking Systems Group PS520E manual

installation & operation manual PS520-Series O VENS Model PS520E PS520-Series Electric Ovens:English PS520 Single PS520 Double PS520 Triple ©2006 Middleby Marshall Inc. Part No., 52358 090/6[...]

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 installa- tion, operating, and maintenance instruc- tions thoroughly befor[...]

iii Model No.________________________ Serial No._______________ Installation Date __________ 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 ob- ligation under this warranty shall be limited to [...]

iv Table of Contents Table of Contents (continued) SECTION 1 - DESCRIPTION I. MODEL IDENTIFICATION ............................................ 1 Series PS520 Electrical Specifications ............................. 2 II. COMPONENT FUNCTION .......................................... 3 A. Conveyor Motor and Conveyor Belt ......................... 3 B[...]

1 SECTION 1 DESCRIPTION SECTION 1 DESCRIPTION I. MODEL IDENTIFICATION The Mideleby Marshall PS520-Series may be used either as a single oven or stacked for use as a double or triple ovens. A single PS520-Series Oven (Figure 1-1) is mounted on a base pad with legs. A double oven (Figure 1-2) consists of two, stacked, single ovens. A triple oven (Fig[...]

2 NOTE Wiring Diagrams are contained in Section 6 of this manual and are also located inside the oven at the bottom of the control panel. This Manual Must Be Kept For Future Reference PS520 SERIES OVEN SPECIFICATIONS Conveyor Belt Width 18.00” (457mm) Heating Zone Length 20.00” (5098mm) Baking Area Square Feet 2.5 sq ft (.023 sq. m.) Overall Di[...]

3 SECTION 1 DESCRIPTION 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 variable rates ranging from 1 minute to 1[...]

4 SECTION 2 INSTALLATION 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 adjacent combustible construction. Clearance must also [...]

5 SECTION 2 INSTALLATION PARTS LIST FOR SERIES PS520 ELECTRIC OVEN INSTALLATION KIT Single and Double Stack Ovens P/N 48397 Item NO. QTY PART NO. DESCRIPTION 1 4 3101908 Leg 4” AD FT 2 2 48392 Insulation Bottom Tray 3 1 48394 Bottom Tray Weldment 4 1 48396 Top cover 5 4 51387 Screw MSSLT Thread 8-32 x 1/2, 18-8 6 1 52358 Installation & Operat[...]

6 SECTION 2 INSTALLATION Figure 2-5. MODEL PS520 SINGLE OVEN DIMENSIONS Figure 2-6. MODEL PS520 DOUBLE OVEN DIMENSIONS Figure 2-7. MODEL PS520 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[...]

7 SECTION 2 INSTALLATION UTILITY ROUGH-IN DIMENSIONS AND POSITIONING FOR PS520 SERIES OVENS WARNING DO NOT USE CONDUIT OR GAS LINE FOR GROUNDING 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 bre[...]

8 SECTION 2 INSTALLATION These “C” Channel brackets are installed in the vertical plane using existing screws 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 the rear sid[...]

9 SECTION 3 OPERATION SECTION 3 OPERATION I. CONTROL FUNCTIONS WARNING A possibility of injury from rotating parts and electric shock exists in the 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 befo[...]

10 Figure 3-2. Interior View of Control Console 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 the control panel opening. Opening the control panel door permits this switch to open, disconnecting power to all electrical controls. B. [...]

11 SECTION 3 OPERATION E. Conveyor The on-off switch for the conveyor motor is on the digital control panel. Also on the control panel is the digital conveyor speed control. The digital control can be adjusted from 1-10 minutes bake time (conveyor speed). Refer to Figure 3-3. Conveyor speed is measured by the amount of time it takes for an item to [...]

12 SECTION 3 OPERATION WARNING OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES III. STEP-BY-STEP OPERATION A. Start-up Procedure Daily Start-up 1. Turn the BLOWER switch (Figure 3-6) to the “ON” or “I” position. This starts the main blower fan and the cooling fans. This blower circulates air through the air fingers and must stay on dur[...]

13 SECTION 3 OPERATION IV. NORMAL OPERATION - STEP-BY-STEP A. Daily Start-up Procedure 1. Check that the circuit breaker/fused disconnect is in the on position. 2 . Turn the “BLOWER” switch to the “ON” or “I” position. 3 . Turn the “CONVEYOR” switch to the “ON” or “I” position. 4. If necessary, adjust the conveyor speed sett[...]

14 SECTION 3 OPERATION Display Shows the Set Point or the Actual Temperature in degrees Fahrenheit (F) or Celsius (C). “HEAT ON” Light Lights when the burner is in operation. “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 temper[...]

15 SECTION 3 OPERATION V. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION light is lit, food product is undercooked Oven will not turn on at all appears in display , oven is not heating Oven will not heat Oven is operating, but little or no air is blowing from air fingers Conveyor moves with a jerky motion, or will not move at all Food pr[...]

16 SECTION 4 MAINTENANCE 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 disassemble or clean the oven with the blower switch or any other part of the oven tur[...]

17 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 CLEANED DAILY - Clean grille with a s[...]

18 SECTION 4 MAINTENANCE Figure 4-3 II. MAINTENANCE - MONTHLY NOTE: The oven interior may require cleaning more than once a month depending on the volume of baking. To clean the interior , you have to disassemble some parts of the oven. When cleaning your PS520-Series Oven note the following: PRECAUTIONS- 1. Do not use excessive water or saturation[...]

19 SECTION 4 MAINTENANCE Figure 4-4 Figure 4-5 Figure 4-6 Figure 4-7 5. Lift other side of conveyor and push toward other side. 6. Remove conveyor as shown. CAUTION Be careful no to bump the drive sprocket while handling the conveyor, to avoid damaging the drive shaft.[...]

20 SECTION 4 MAINTENANCE B. Air Fingers Disassembly For cleaning 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 (see 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 fr[...]

21 SECTION 4 MAINTENANCE Figure 4-11 Figure 4-12. Standard Lower Finger Figure 4-13. Standard Upper Finger Figure 4-14 Figure 4-15 6. To remove the inner plate, pull the plate out and then up. 7. The outer finger plate is stainless steel and may be cleaned by either soaking in a hot, strong detergent solution or using a caustic cleaner. The conveyo[...]

22 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 groove as shown in Figure 4-18. There is a blocking tab on the outside of[...]

23 SECTION 4 MAINTENANCE 5. Install fingers and blank plates correctly with edges interlocked and no space between edges. Figure 4-18 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[...]

24 SECTION 4 MAINTENANCE E. Conveyor Reassembly Into Oven 1. Lift conveyor and position it in the oven as shown. NOTE: Conveyor may be inserted into either end of the oven. If it is ti be installed from the non-drive end of the oven the drive sprocket assembly must be removed as shown in conveyor disassembly section. 2. Reinstall the conveyor exten[...]

25 SECTION 4 MAINTENANCE 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 the end of the conveyor as shown in Figure 4-24. 2. Using long nose pliers, unhook master links at left end of conveyor as shown in Figure 4-25. 3. Remove t[...]

26 SECTION 4 MAINTENANCE 6. Reconnecting the inside master links (Figure 4-29) NOTE: The outside master links have right and left sides to them. The right edge master link has an open hook facing you as shown in Figure 4-30. This will match up with the outer edges of the conveyor belt. Remember this hook travels backwards on the conveyor. 7. Reconn[...]

27 4. Reattach conveyor guard to control panel and secure two screws. Install both upper end plugs. III. MAINTENANCE - EVERY 3 MONTHS WARNING Shut OFF all electrical power and lockout/tagout the switch before attempting maintenance work. NOTE: It is recommended that the 3-month maintenance be performed by an authorized Middleby Marshall technician.[...]

28 SECTION 4 MAINTENANCE PS520-SERIES ELECTRIC OVEN KEY SPARE PARTS KIT ITEM PART NO. DESCRIPTION QUANTITY 1 58504 Kit, Temperature Control On/Off PID 1 2 51402 Relay, 100A 1 3 58390 Conveyor Drive Motor with 2 pole magnet 1 4 58323 Conveyor Speed control 1 5 33812-5 Thermocouple 3 6 50715 Heater Element, 208V 1 6 51017 Heater Element, 240V 1 6 519[...]

29 SECTION 5 TROUBLESHOOTING SECTION 5 TROUBLESHOOTING PROBLEM: PRODUCTS ARE OVERCOOKED OR UNDERCOOKED Check for correct Check for correct setting of conveyor setting on temperature speed control. controller Set the conveyor Turn temperature speed control at control to correct correct setting. setting. Verify the food preparation process. If produc[...]

30 SECTION 6 ELECTRICAL SCHEMATICS Drawing 48713 Rev J: Wiring Diagram, E208-240V 50/60/1[...]

31 SECTION 6 ELECTRICAL SCHEMATICS Drawing 52445 Rev J: Wiring Diagram, E380-480V 50/60/1[...]

32 SECTION 6 ELECTRICAL SCHEMATICS Drawing 52446 Rev K: Wiring Diagram, E230-240V CE, 1Ph[...]

33 SECTION 6 ELECTRICAL SCHEMATICS Drawing 54661 Rev J: Wiring Diagram, E380-400V CE, 1Ph[...]

34 SECTION 6 ELECTRICAL SCHEMATICS Drawing 58158 Rev F: Wiring Diagram, E380-400V CE, 3Ph[...]

35 NOTES[...]

W ARNING Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating and maintenance instructions thoroughly before inst alling or servicing this equipment. NOTICE During the warranty period. ALL parts replacement and servicing should be performed by your Middleb[...]