Middleby Marshall PS540 manual

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Table of contents for the manual

  • Page 1

    ©200 6 Middleby Marshall Inc. Middleby Middleby Middleby Middleby Middleby Marshall Marshall Marshall Marshall Marshall A MIDDLEBY COMPANY PS540-Series Gas Ovens: English owner's operating & installation manual PS540-Series O VENS Model PS540G PS540 (Triple) PS540 (Double) Part No. 50664 Price $30.00 P: 10/06 ® PS540 (Single)[...]

  • Page 2

    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 POST , IN A PROMINENT LOCA TION, THE EMERGENCY PHONE NUMBER OF Y OUR LOCAL GAS SUPPLIER AND INSTRUCTIONS T O BE FOLLO WED IN THE EVENT Y OU SMELL GAS. INSTR UCTIONS T O BE FOLLO WED IN THE E[...]

  • Page 3

    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.O.B. Seller’s factory, [...]

  • Page 4

    iv NO TE 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 PS540 ELECTRICAL SPECIFICATIONS ............. 2 II. PRINCIPLE OF AIR FLOW ....................[...]

  • Page 5

    SECTION 1 DESCRIPTION 1 I . MODEL IDENTIFICATION The Middleby Marshall PS540-Series may be used either as a single oven or stacked for use as double or triple ovens. The major difference between the oven models in this series is the width of the conveyor. A single PS540-Series Oven (Figure 1-1) is mounted on a base pad with legs and casters. A doub[...]

  • Page 6

    2 SECTION 1 DESCRIPTION PS540 SERIES OVEN SPECIFICATIONS Conveyor Belt Width 32 ″ (813mm) Heating Zone Length 40-1/2 ″ (1028mm) Baking Area Square Feet 9 sq. ft. (0.84 sq. m.) Overall Dimension Standard Single Oven w/Legs 80 ″ (2032mm) L × 61-5/16 ″ (1557mm) W × 47-5/16 ″ (1202mm) H × Overall Dimension Double Oven 80 ″ (2032mm) L × [...]

  • Page 7

    SECTION 1 DESCRIPTION 3 II. PRINCIPLE OF AIR FLOW The fan-style blower draws air into the oven plenum where it is heated. The blower then pushes the hot air through the air fingers into the baking chamber. Each air finger contains an inner plate and outer plate that form the hot air into jets, distributing it across a conveyor belt on which the foo[...]

  • Page 8

    4 SECTION 1 DESCRIPTION Series ovens used to bake pizza have four bottom fingers and two top fingers. For special product baking require- ments, a number of other styles of fingers and finger arrangements are available from the factory. NOTE: Some customers have a predetermined finger arrangement. If you have any questions pertaining to the finger [...]

  • Page 9

    SECTION 1 DESCRIPTION 5 III. COMPONENT FUNCTION (Figure 1-6) Figure 1-6. PS540-Series Oven Components Locations[...]

  • Page 10

    6 SECTION 1 DESCRIPTION III. COMPONENT FUNCTION A. Conveyor Motor and Conveyor Belt The conveyor belt is driven by a variable-speed electric motor (Figure 1-7) operating through a gear reducer. The motor speed is controlled by a digital control. The stain- less-steel wire belt can travel in either direction at variable rates ranging from 3 minutes [...]

  • Page 11

    SECTION 1 DESCRIPTION 7 E. Cooling Fan — See Figure 1-8 The cooling fans are located in the back of the oven. These cooling fans draw air through its grille, blowing it through the blower motor compartment and the control compartment into the oven top and exhausted out the front louvers. Figure 1-8. Cooling Fan Cooling Fan Grille[...]

  • Page 12

    8 SECTION 1 DESCRIPTION F. Air Fingers and Blank Plates - See Figure 1-9 F1. Air Fingers An Air Finger Assembly is made up of three parts: 1. Outer Plate - The Outer Plate is the removable covering with tapered holes, which direct the air stream onto the product being baked. 2. Inner Plate -The perforated Inner Plate is vital in forming the unique [...]

  • Page 13

    SECTION 2 INSTALLATION 9 SECTION 2 INST ALLA TION NOTE: In U.S.A., the oven installation must conform with local codes, or in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1 latest edition. The oven, when installed, must be electrically grounded in accordance with local codes, or in the absence of local codes, with the Nati[...]

  • Page 14

    10 SECTION 2 INSTALLATION PS540 OVEN INSTALLATION REQUIRED KITS AND EQUIPMENT T YP E PS540 PS540 Single PS540 Double PS540 Double PS540 Triple O F Gas Oven Oven Option Oven Option Oven Option Oven Option INSTALLATION Installation Base w/15 ″ Legs, Base w/6 ″ Legs, Base w/Casters Base w/Casters Kit P/N Casters & Top Casters & Top & T[...]

  • Page 15

    SECTION 2 INSTALLATION 11 PARTS LIST FOR PS540 SERIES SINGLE OVEN OPTION - BASE w/15 ″ ″ ″ ″ ″ LEGS & TOP P/N 34832 ITEM NO . QT Y PART NO. DESCRIPTION 1 1 37900-0025 COMPLETE BASE WELDMENT 2 4 37900-0024 TOP PLATE, LEG WELDMENT 3 2 22290-0009 SWIVEL CASTER W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER FLAT PLATE 5 32 220373 3 / 8 ?[...]

  • Page 16

    12 SECTION 2 INSTALLATION PARTS LIST FOR PS540 SERIES DOUBLE OVEN OPTION - BASE w/6 ″ ″ ″ ″ ″ LEGS, CASTERS & TOP P/N 34833 ITEM NO . QT Y PART NO. DESCRIPTION 1 1 37900-0025 COMPLETE BASE WELDMENT 2 4 37900-0102 TOP PLATE, LEG WELDMENT 3 2 22290-0009 SWIVEL CASTER W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER FLAT PLATE 5 32 220373[...]

  • Page 17

    SECTION 2 INSTALLATION 13 PARTS LIST FOR PS540 SERIES TRIPLE OVEN OPTION - BASE w/CASTERS & TOP P/N 51139 ITEM NO . QT Y PART NO. DESCRIPTION 1 1 54606 COMPLETE BASE WELDMENT 2 4 45209 QUAD OUTRIGGER WELDMENT 3 2 22290-0009 SWIVEL CASTER, W/BRAKE FLAT PLATE 4 2 22290-0010 SWIVEL CASTER, FLAT PLATE 5 4 45206 INSERT,QUAD ADJUSTMENT FOOT 6 4 45205[...]

  • Page 18

    14 SECTION 2 INSTALLATION Figure 2-5. MODEL PS540 SINGLE OVEN DIMENSIONS GAS INLET ELECTRICAL JUNCTION BOX RECOMMENDED MINIMUM CLEARANCES: Rear of Oven to Wall - 6 ″ (150mm) Non-control End of Oven to Wall - 0 ″ Control End of Oven to Wall - 0 ″ 1 2 3 2 3 3 3 1[...]

  • Page 19

    SECTION 2 INSTALLATION 15 Figure 2-6. MODEL PS540 DOUBLE OVEN DIMENSIONS GAS INLET ELECTRICAL JUNCTION BOX RECOMMENDED MINIMUM CLEARANCES: Rear of Oven to Wall - 6 ″ (150mm) Non-control End of Oven to Wall - 0 ″ Control End of Oven to Wall - 0 ″ 1 2 3 2 3 3 3 1[...]

  • Page 20

    16 SECTION 2 INSTALLATION RESTRAINT CABLE INSTALLATION Install the restraint cable assembly on the oven, as shown in Figure 2-6. Figure 2-7. MODEL TRIPLE OVEN DIMENSIONS GAS INLET ELECTRICAL JUNCTION BOX RECOMMENDED MINIMUM CLEARANCES: Rear of Oven to Wall - 6 ″ (150mm) Non-control End of Oven to Wall - 0 ″ Control End of Oven to Wall - 0 ″ 1[...]

  • Page 21

    SECTION 2 INSTALLATION 17 WARNING DO NOT USE CONDUIT OR GAS LINE FOR GROUND CONNECTION. CAUTION IT IS REQUIRED THAT THE OVEN BE PLACED UNDER A VENTILATION HOOD FOR ADEQUATE AIR SUPPLY AND VENTILATION. ELECTRIC AND GAS SUPPLY TO BE PROVIDED BY CUSTOMER ELECTRICAL SAFETY SWITCH 15 Amp circuit breaker / fused disconnect switch with lockout/tagout elec[...]

  • Page 22

    18 SECTION 2 INSTALLATION II. VENTILATION GUIDELINES A mechanically driven ventilation system is required for the PS540 Series Middleby Marshall conveyorized gas ovens. The minimum hood canopy dimensions are out- lined below. Local codes and conditions vary greatly from one area to another and must be complied with. Following are the suggested requ[...]

  • Page 23

    SECTION 2 INSTALLATION 19 III. ELECTRICAL CONNECTION INFORMATION FOR PS540-SERIES OVENS. WARNING Authorized supplier personnel normally accom- plish the connections for the ventilation system, electric supply, and gas supply, as arranged by the customer. Following these connections, the factory-authorized installer can perform the initial startup o[...]

  • Page 24

    20 SECTION 2 INSTALLATION V. GAS SUPPLY FOR GAS HEATED OVENS WARNING During gas line pressure testing, observe the following precautions: 1. The oven and its individual shutoff valve MUST be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.45kPa). 2. The oven MUST b[...]

  • Page 25

    SECTION 2 INSTALLATION 21 To Gas Supply Pipe Full Flow Gas Shutoff Valve Flexible Hose Union 90-deg. ST. Elbow Appliance Connection (Male Nipple) The minimum gas line pressure at the input side of the full-flow gas shutoff valve, when the oven burner is operating on the high flame, MUST be, for natural gas, 6 ″ w.c. (14.9mbar), 1.13 kPa and for p[...]

  • Page 26

    22 SECTION 2 INSTALLATION NO TES[...]

  • Page 27

    SECTION 3 OPERATION 23 SECTION 3 OPERA TION I. CONTROL FUNCTIONS WARNING The burner cannot operate and gas cannot flow through the burner without electric power. Do NOT attempt to operate the oven during a power outage. WARNING A possibility of injury from rotating parts and electric shock exists in this oven. Never disassemble or clean the oven wi[...]

  • Page 28

    24 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 left 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[...]

  • Page 29

    SECTION 3 OPERATION 25 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 3 min. to 30 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 [...]

  • Page 30

    26 SECTION 3 OPERATION WARNING OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES. III. STEP-BY-STEP OPERATION Control Panel (On split belt ovens, two conveyor speed controls are mounted on the control panel.) A. Startup Procedures Initial Startup Check that the full-flow gas shutoff valve is “on”. This valve is located outside the rear of th[...]

  • Page 31

    SECTION 3 OPERATION 27 Figure 3-6. Control Panel[...]

  • Page 32

    28 SECTION 3 OPERATION CAUTION In case of power failure, turn all switches to the “OFF” ("O") position, open the oven window, 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 RE- STARTING THE OVEN[...]

  • Page 33

    SECTION 3 OPERATION 29 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. OVERTEMP Light Lights when the oven temperature is greater than 650°F (343°C). Refer to Qui[...]

  • Page 34

    30 SECTION 3 OPERATION IV . 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. Contact your Middleby Marshall Authorized Service Agent to determine and[...]

  • Page 35

    SECTION 4 MAINTENANCE 31 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 the blower switch or any other part of the oven t[...]

  • Page 36

    32 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. TWO COOLING FAN GRILLES AT THE REAR OF EACH OVEN CONTROL COMPARTMENT MUST BE CLEANED DAIL[...]

  • Page 37

    SECTION 4 MAINTENANCE 33 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 PS540 Oven note the following: PRECAUTIONS - 1. Do not use excessive water or saturatio[...]

  • Page 38

    34 SECTION 4 MAINTENANCE 4. Remove conveyor drive chain cover as shown. 5. Remove tension from drive chain by lifting and pushing the conveyor slightly into the oven. Remove drive chain from conveyor drive sprocket as shown. NOTE: The split belt conveyor assembly can only be removed from the drive end of the oven. 6. Begin sliding conveyor out of t[...]

  • Page 39

    SECTION 4 MAINTENANCE 35 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. Fingers are marked in the order shown; as viewed from t[...]

  • Page 40

    36 SECTION 4 MAINTENANCE 6. To remove the inner plate, pull the plate out and then up. Figure 4-12. 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. Figure 4-13. Standard Lower Finger Figure 4-14. Standar[...]

  • Page 41

    SECTION 4 MAINTENANCE 37 2. Reassemble the inner plate. Keep your fingers clear so you won’t pinch them. The inner plate of a finger will only go in one way because of its design. 3. Replace the outer plate by placing your hands flat on the top of the plate and pushing down. Keep your fingers clear so you won’t pinch them. Figure 4-18. 4. Repla[...]

  • Page 42

    38 SECTION 4 MAINTENANCE 5. Install fingers and blank plates correctly with edges interlocked and no space between edges. Figure 4-21. 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 - [...]

  • Page 43

    SECTION 4 MAINTENANCE 39 E. Reinstall End Plugs 1. Reinstall lower end plug. Be sure to tighten two wing screws on the end plug. 2. Reinstall conveyor. 3. Reinstall upper end plug. Be sure to tighten two wing screws on the end plug. Figure 4-22. Figure 4-23.[...]

  • Page 44

    40 SECTION 4 MAINTENANCE G. 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 3 ?[...]

  • Page 45

    SECTION 4 MAINTENANCE 41 H. 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 4-27. Figure 4-27. 2. Using long nose pliers, unhook master links at left end of conveyor as shown in Figure 4-28. Figure[...]

  • Page 46

    42 SECTION 4 MAINTENANCE I. Replacing Conveyor Belt If a section of the conveyor belt needs replacing it can be done with the conveyor assembly either in or out of the oven. The section of the conveyor belt furnished with the oven in the installation kit may then be used to replace a section. Follow the preceding procedure “H. Conveyor belt link [...]

  • Page 47

    SECTION 4 MAINTENANCE 43 4. Reassemble conveyor drive chain cover and then reassemble the bottom cover to the drive chain cover. Install both upper end plugs. Figure 4-37. III. MAINTENANCE - EVERY 3 MONTHS WARNING Shut OFF all electrical power and lock/tag out the switch before attempting maintenance work. Shut OFF gas supply to oven. NOTE: It is r[...]

  • Page 48

    44 SECTION 4 MAINTENANCE B. Electrical Terminals Open the control cabinet door by removing the three screws from the control cabinet door. Tighten all electrical control terminal screws including the electrical contactor terminal screws as shown in Figure 4-39. Figure 4-39. C. Ventilation Check that the air circulation throughout the oven is not bl[...]

  • Page 49

    SECTION 4 MAINTENANCE 45 E. Blower Fan Shaft Bearing Lubrication CAUTION Over-greasing damages the bearing seals and accelerates grease loss, which shortens bearing life. Wipe off any excess grease on and around the bearing. Reinstall the rear shroud to allow the oven to operate Grease the two (2) main blower fan shaft bearings (Figure 4-43), using[...]

  • Page 50

    46 SECTION 4 MAINTENANCE 6. Make sure bronze washer is in between the two halves. Figure 4-47. 7. Place the idler shaft assembly back into place and reinstall the adjustment screws. Figure 4-48. 8. Loosen the set screw on each conveyor drive sprocket and remove sprockets. Figure 4-49. 9. Loosen the split locking collar. Figure 4-50. 10. Remove driv[...]

  • Page 51

    SECTION 4 MAINTENANCE 47 12. Slide shaft assembly to right side, holding assembly in place. Slide split locking collar to the left side and tighten. 13. Slide rear conveyor drive sprocket onto shaft. Tighten the set screw of this drive sprocket until it extends into the hole of the hollow shaft. It should NOT touch the inner, solid shaft. Check to [...]

  • Page 52

    48 SECTION 4 MAINTENANCE PS540-SERIES GAS OVEN KEY SPARE PARTS KIT, p/n 36805 (Figure 4-56) ITEM PART NO. ENGLISH DESCRIPTION QUANTITY 1 47321 Temperature Controller 1 2 44687 Blower/Fan Motor 1 3 47797 Conveyor Drive Motor 1 4 37337 Conveyor Speed Control 1 5 33812-3 Thermocouple 1 6 41647 Module M420 1 7 50275 Burner & Motor Assembly 1 8 5023[...]

  • Page 53

    49 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. Turn temperature control to correct setting. If products still cook incorrectly, call y[...]

  • Page 54

    SECTION 5 TROUBLESHOOTING 50 NO TES[...]

  • Page 55

    51 ENGLISH SECTION 6 PARTS LIST SECTION 6 - P AR TS LIST[...]

  • Page 56

    52 ENGLISH SECTION 6 PARTS LIST[...]

  • Page 57

    53 ENGLISH SECTION 6 PARTS LIST OVEN PANELS, WINDOW AND LEGS ITEM QTY. P/N DESCRIPTION 1 2 49947 UPPER END PLUG ASSEMBLY 2 2 49946 LOWER END PLUG ASSEMBLY 3 8 36452 WING NUT, PLASTIC 1/4-20 4 8 45449 END PLUG MOUNTING PLATE ASSEMBLY 5 16 21296-0005 SCREW, HEX WSHHD12-14 × 3/4 ″ , SS BSD 6 1 49905 CONVEYOR CHAIN COVER 7 2 50637 EYEBROW 8 1 33486 [...]

  • Page 58

    54 ENGLISH SECTION 6 PARTS LIST[...]

  • Page 59

    55 ENGLISH SECTION 6 PARTS LIST CONTROL PANEL ITEM QTY. P/N DESCRIPTION 1 1 47321 COMBO BURST CONTROL, 4-20Ma 2 1 33812-3 THERMOCOUPLE, TYPE J SHIELDED 9.50 × 60 ″ 3 1 28041-0011 CONTACTOR, 208/240V 4 3 46521 KIT, BLOWER SWITCH CONTAINS ((1) 44697, (1) 44696) 5 3 44697 CONTACT BLOCK 6 3 44696 SELECTOR SWITCH 7 1 49888 CONTROL DOOR LABEL 8 1 3150[...]

  • Page 60

    56 ENGLISH SECTION 6 PARTS LIST[...]

  • Page 61

    57 ENGLISH SECTION 6 PARTS LIST BLOWER AND SHROUD ITEM QTY. P/N DESCRIPTION 1 1 51157 PULLEY, 1GRV 3.0PD AK32H 2 1 48855 WELDMENT, BRG BRACKET PS540G 3 22 220373 SCREW, HH 3/8 ″ - 16 × 1 ″ SS T 3 A A / R 17110-0017 NEVER SEIZE LUBRICANT - USED ON ITEMS 3 & 7 APPLIED TO THREADS BEFORE REINSTALLING 4 30 21422-0001 SP LIT LOCK WASHER 3/8 ″ [...]

  • Page 62

    58 ENGLISH SECTION 6 PARTS LIST[...]

  • Page 63

    59 ENGLISH SECTION 6 PARTS LIST CONVEYOR ITEM QTY. P/ N DESCRIPTION 1 1 47042 SINGLE CONVEYOR 80 ″ EXCLUDES ITEMS 7, 8, 9, 12, 36 & 37 2 1 22450-0225 CONVEYOR BELT, 1/2P 32 ″ × 204 ″ 2.84/11 S 3 1 33900-0032 CONVEYOR CHAIN, SS WIRE1 FT 4 1 51380 KIT, MASTER LINK, CONTAINS ((1) 33900-0016, (4) 33900-0017, (1) 33900-0018) 5 1 33900-0016 MA[...]

  • Page 64

    60 ENGLISH SECTION 6 PARTS LIST[...]

  • Page 65

    61 ENGLISH SECTION 6 PARTS LIST SPLIT BELT CONVEYOR ITEM QTY. P/ N DESCRIPTION ITEM QTY. P/ N DESCRIPTION 1 1 50646 SPLIT CONVEYOR 50/50 80 ″ EXCLUDES ITEMS 7, 8, 9, 12, 36 & 37 2 1 22450-0226 CONVEYOR BELT, 1/2P 15 ″ × 146 ″ 2.86/5 SP 3 1 33900-0037 CONVEYOR CHAIN, SS WIRE1 FT 4 1 51382 KIT, MASTER LINK, CONTAINS ((1) 33900-0016, (1) 33[...]

  • Page 66

    62 ENGLISH SECTION 6 PARTS LIST[...]

  • Page 67

    63 ENGLISH SECTION 6 PARTS LIST GAS BURNER AND PIPING ASSEMBLY ITEM QTY. P/ N DESCRIPTION 1 1 50274 1 / 2 ″ GAS CONTROL VALVE (Conversion Required for Propane) 2 5 23153-0004 1/ 2 ″ CLOSE NIPPLE - BLK 3 1 23151-0032 1/ 2 ″ × 3 ″ NIPPLE - BLK 4 1 23051-0003 1/ 2 ″ PIPE UNION 5 1 50543 NA TU R A L TO P R OP A N E CO N V E RI O N KIT, PS540[...]

  • Page 68

    64 ENGLISH SECTION 6 PARTS LIST[...]

  • Page 69

    65 ENGLISH SECTION 6 PARTS LIST MACHINERY COMPARTMENT ITEM QTY. P/ N DESCRIPTION 1 1 28021-0047 INTERLOCK SWITCH 10A NO2P 2 1 28021-0061 MOMENTARY SWITCH - 10A NO 2 POLE 3 1 44687 MOTOR 1/2 HP 4 1 49953 MOTOR MOUNTING BRACKET WELDMENT 5 1 50449 MOTOR SUPPORT BRACKET 6 8 1513D8805 SCREW, HEX HD 3/8 ″ -16 × 3/4 ″ - NP 7 8 21422-0001 LOCK WASHER,[...]

  • Page 70

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

  • Page 71

    67 SECTION 7 ELECTRICAL SCHEMATICS SECTION 7 ELECTRICAL SCHEMA TICS Wiring Diagram, G208-240 50/60, 1PH 3W PS540 50141G[...]

  • Page 72

    SECTION 7 ELECTRICAL SCHEMATICS 68 NO TES[...]

  • Page 73

    69 SECTION 7 ELECTRICAL SCHEMATICS NO TES[...]

  • Page 74

    SECTION 7 ELECTRICAL SCHEMATICS 70 NO TES[...]

  • Page 75

    [...]

  • Page 76

    Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • USA • (847)741-3300 • FAX (847)741-4406 24-Hour Service Hotline: 1-(800)-238-8444 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 qualit[...]