Middleby MarshallメーカーPS520Gの使用説明書/サービス説明書
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©2006 Middleby Marshall Inc. Middleby Middleby Middleby Middleby Middleby Marshall Marshall Marshall Marshall Marshall A MIDDLEBY COMPANY PS520-Series Gas Ovens: English October 17, 2006 owner's operating & installation manual PS520-Series O VENS Model PS520G PS520 (Triple) PS520 (Double) Part No.
ii W ARNING FOR Y OUR SAFETY , DO NO T ST ORE OR USE GASOLINE OR O THER FLAMMABLE V APORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY O THER APPLIANCE. W ARNING Improper installation, adjustment, alteration, service, or maintenance can cause pr oper ty damage, injury , or death.
iii MIDDLEBY MARSHALL INC. O VEN 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.
iv NO TE Wiring Diagrams are in Section 6 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 PS520 GAS SPECIFICATIONS .
SECTION 1 DESCRIPTION 1 I . MODEL IDENTIFICATION The Middleby Marshall PS520-Series may be used either as a single oven or stacked for use as 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.
2 SECTION 1 DESCRIPTION PS520 SERIES OVEN SPECIFICATIONS Conveyor Belt Width 18.00 ″ (457mm) Heating Zone Length 20.00 ″ (5098mm) Baking Area Square Feet 2.5 sq. ft. (0.23 sq. m.) Overall Dimension – Standard Single Oven w/Legs 42.00 ″ (1067mm) L × 35.
SECTION 1 DESCRIPTION 3 II. COMPONENT FUNCTION (Figure 1-4) Figure 1-4. PS520-Series Oven Components Locations.
4 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.
SECTION 1 DESCRIPTION 5 Figure 1-6. Cooling Fan.
6 SECTION 1 DESCRIPTION Half Blank Plate Blank Plate Outer Plate Inner Plate Finger Manif old Assembly Baffle 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 finger is not required.
SECTION 2 INSTALLATION 7 WARNING Keep the appliance area free and clear of combustibles. 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.
8 SECTION 2 INSTALLATION PARTS LIST FOR SERIES PS520 GAS OVEN INSTALLATION KIT Single Stack Oven P/N 59182 ITEM N O . Q T Y PART NO. DE SCR IPTION 1 4 3101908 LEG 4 ″ AD FT 2 2 48392 INSULATION BOTT.
SECTION 2 INSTALLATION 9 Figure 2-1 (continued). PS520-Series Gas Oven Installation Parts ITEM N O . Q T Y PART NO. DE SCR IPTION 1 2 48392 INSULATION BOTTOM TRAY 2 1 48394 BOTTOM TRAY WELDMENT 3 1 48.
10 SECTION 2 INSTALLATION 4.00 1 0 1 .6mm Figure 2-5. MODEL PS520 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.
SECTION 2 INSTALLATION 11 Figure 2-6. MODEL PS520 DOUBLE OVEN DIMENSIONS 4.0 0 1 0 1 .6mm 1 The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments.
12 SECTION 2 INSTALLATION Figure 2-7. MODEL 520 TRIPLE OVEN DIMENSIONS 1 The Opening Height is Adjustable from 2-1/4 inch minimum to 3-3/4 inch maximum in 1/2 inch increments.
SECTION 2 INSTALLATION 13 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/tagout electrical shutoff for each oven.
14 SECTION 2 INSTALLATION 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.
SECTION 2 INSTALLATION 15 V. GAS SUPPLY CAUTION DURING PRESSURE TESTING NOTE THE FOLLOWING: 1. The oven and its individual shutoff valve must be discon- nected from the gas supply piping system during any pressure testing of that system at test pressure in excess of 1/2 psi (3.
16 SECTION 2 INSTALLATION 1. Checking the Gas Supply (Inlet) Pressure a. With the main gas supply valve closed and the circuit breaker/fused disconnect in the OFF (“O”) position, open the inlet pressure tap shown in Figure 2-13 and attach a manometer to the tap.
SECTION 3 OPERATION 17 SECTION 3 OPERA TION 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”.
18 SECTION 3 OPERATION I I . 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.
SECTION 3 OPERATION 19 E. Conveyor The on-off switch for the conveyor motor is on the control panel. Also on the control panel is the digital conveyor speed control. The digital control can be adjusted from 1-10 min. bake time (conveyor speed). Refer to Figure 3-3.
20 SECTION 3 OPERATION 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 cooling fans.
SECTION 3 OPERATION 21 Figure 3-6. Control Panel.
22 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 procedure. IF THE OVEN WAS SWITCHED OFF FOR LESS THAN 5 MINUTES, WAIT FOR AT LEAST FIVE MINUTES BEFORE RESTARTING THE OVEN.
SECTION 3 OPERATION 23 Display Shows the Set Point or the Actual T em- 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.
24 SECTION 3 OPERATION V. QUICK REFERENCE: TROUBLESHOOTING SYMPTOM PROBLEM SOLUTION The oven temperature ex- ceeded 650°F (343°C), and the burner was automati- cally shut down. • Follow the procedures under Daily Shutdown Procedures in this section to shut down the oven.
SECTION 4 MAINTENANCE 25 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).
26 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.
SECTION 4 MAINTENANCE 27 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 Series PS520 Oven note the following: PRECAUTIONS - 1.
28 SECTION 4 MAINTENANCE 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.
SECTION 4 MAINTENANCE 29 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 (refer to Figure 1-9). If a blank or choke plate is used, mark that plate also.
30 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.
SECTION 4 MAINTENANCE 31 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.
32 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 Pl.
SECTION 4 MAINTENANCE 33 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.
34 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.
SECTION 4 MAINTENANCE 35 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.
36 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.
SECTION 4 MAINTENANCE 37 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.
38 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 production, if a failure occurs.
39 SECTION 5 TROUBLESHOOTING SECTION 5 TROUBLESHOO TING 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.
SECTION 5 TROUBLESHOOTING 40 NO TES.
41 SECTION 6 ELECTRICAL SCHEMATICS SECTION 6 ELECTRICAL SCHEMA TICS Wiring Diagram, G208-240 50/60 GO, PS520G - + + +- - + - + 214 215 401 400 212 213 211 210 240 317 315 206 204 337 335 228 228 333 2.
SECTION 6 ELECTRICAL SCHEMATICS 42 NOTES.
43 SECTION 6 ELECTRICAL SCHEMATICS NOTES.
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 technical service in the industry.
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