Middleby Marshall PS570S User's Manual
Contents
1. 18 458mm minimum Typical both 2 51mm 8 203mm 3 76mm ends of oven minimum minimum minimum 2 Fs gt 3 nes 2 tI nn A Z p GI 028 fA 1 fiv 1 m See IV ASSEMBLY A Base Pad Legs Casters and Stacking NOTE Optional Stacking Lift Kit P N 30580 The Stacking Lift Kit P N 30580 is available separately This Kit provides a complete lift adapter set specifically designed for stacking PS570S oven cavities The Kit includes an instructional videotape 1 Install the top panels in place on the top oven cavity Follow the instructions provided with the top panels 2a Legs Casters Installation Single and Double Ovens Install one leg extension to each corner of the base pad using the 1 2 13x1 1 4 bolts 1 2 flat washers and 1 2 lockwashers supplied in the Installation Kit See Figure 2 3 e Install one adjustable leg and one caster into the holes on the bottom of the leg extension The adjustable leg should be installed into the OUTSIDE hole closest to the front or rear face ofthe oven The caster sh2. OWA vzindNI gt y o Vw 020 LNANI 1 E NUO E auvog AlddNY BI LHM NYO c Sa31dnoo 33 TAM AAA ONYIHL 7 5 131100 101d DN nda Fa 1041409 _ 2 z Svo OL i OA 02 0 1ndino m HOSN3S 3 ano HOLINDI E 10119 HOLON N3MO18 3 MaNuna QNO 1 la v s 3 8 lodo aTnaow NET ll NOLLINO YATIONLNOO 33n1vusdWal THM ano Ave 2 18 ON NUS m Z HOLIMS Ulv Ave 2 9 9 La NE 35 NYO FT 1 ASI ON I Woo 7109 AVS 1 Ave 9 5 5 3 069 ps REM AdIANIZ UINYOASNVUL SN3dO O N 9 MIA HOIH MIA 2 ON dau FAVA HOLIMS 7OHINOO SVD THM NOILVNIGWOO Tu HOLOW YIMOTE 15 CON ian RS e LV3H 1HM C OA Nua NMOG1009 doing o HOIY Nv4 SNI1009 IHM VU FE al E NEAL B YOLIOWdVO A 1397 NV4 TAM UN J NUS 1391 Hans 9 qm LN b HOLIOVdVO HOIH n Nua 7 t ars o gt SG 2 2i YOLVOIONI MIA 1HOlN HOIH S3HOLIMS 6 IE HOLMS AL34YS HOAIANOO Ww Ww Ww Ww wa AMANIHOVIN 2 Da pe Sp HH HOLIMS mao Ws E I I J AN LO HOLOVLNOO 2 ve AS 915 as dv dv we w ti eL Os de YOLOW YOASANOO H3T10H1NOO dn old 9334 HOA3ANOO 3 UVIY 1437 ST ee I UR A Sa3HOLIMS a P lt
3. At least 1 25mm deflection Figure 4 13 Lubricating the Bearings Grease fittings 1 per bearing 4 SECTION4 MAINTENANCE V KEY SPARE PARTS KIT Item Part No Description 1 36939 Kit Digital Temperature Controller 2a 27384 0008 Conveyor Drive for single conveyor belt ovens 2b 27384 0014 i 2c 27384 0011 Motor Conveyor Drive for extended bake split belt ovens 3a 22450 00522 _ 3b 22450 0230 Brushes Drive Motor for all split belt ovens 33984 Kit Thermocouple 27170 0263 Assembly Pickup Conveyor Drive 4 5 6 27392 0002 Fan Cooling 7 8 9 Motor Conveyor Drive for standard split beltovens _ Brushes Drive Motor for all single belt ovens 27170 0011 Assembly Burner Blower and Motor 35624 Kit Air Switch 42810 0114 Kit Ignition Module 10 34982 Module High Limit Control 115V 11 27381 0069 Motor Blower 1 HP 12 42810 0133 Kit Conveyor Speed Controller 13 41647 Valve Modulating Gas 1 2 14 31651 Amplifier Modulating Valve SECTION 5 ELECTRICAL WIRING DIAGRAM
4. at Machinery Compartment Access Control Panel eese Serial Plate fter net Gas Burner sssssssse ieee Air Fingers iii rai OVEN SPECIFICATIONS A B C D DIMENSIONS e ERRARE General Specifications Gas Orifice and Pressure Specifications Electrical Specifications page V FINALASSEMBLY eee 11 ELECTRICAL SUPPLY 11 Vile GAS SUPPLY eser ee eai 11 Gas Utility Rough In Recommendations 12 B iii 12 C Gas Conversion 12 SECTION 3 OPERATION AND TROUBLESHOOTING 13 I LOCATION AND DESCRIPTION OF CONTROLS 13 A BLOWER lt gt 13 HEAT R Switch 13 C CONVEYOR a Switch 13 D Conveyor Speed Controller 13 E Digital Temperature Controller 13 F Machinery Cpt Access Panel Safety Switch 13 NORMAL OPERATION STEP BY STEP 14 A Daily Startup Procedure 14 B Daily Shutdown Procedure 14 QUICK REFERENCE DIGITAL TEMPERATURE CON TROLBER ALAS ipi EIU 15 IV QUICK REFERENCE T
5. Middleby Marshall SP LOCK OVER TEMP TEMP SECTION3 OPERATION SET PT setpoint Light Lights when the set point is shown in the display ACTUAL TEMP Light the display Service Key Lights when the Actual Tempera ture is shown in For use by service personnel only Unlock Key Press this key together with the Set Point Key to allow the Set Point to be changed Changes can only be made for 60 seconds Up Arrow and Down Arrow Keys Press these keys to adjust the Set Point up or down If the Set Point will not change refer to Set Point Key and Unlock Key in this section Set Point Key Press this key to gether with the Unlock Key to al low the Set Point to be changed Changes can only be made for 60 seconds SECTION3 OPERATION IV QUICK REFERENCE TROUBLESHOOTING SYMPTOM light is lit food product is undercooked Oven will not turn on at all Oven shuts down shortly after it is turned on EE 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 products are over cooked or undercooked PROBLEM The oven temperature ex ceeded 650 F 343 C and the burner was automati cally shut down Electrical power may n
6. ALlddvs 1 1 1 L 7 1 1 1 I Tod 1 w bd m 1 AS SIS WOO dS OV OV MW 1 THM HOLON i HOA3ANOO H3TIOHINOO 9334 HOASANOO 9 ano _ 9078 i dn3old Nao JYNINSIL ATNO SN3A O 1138 1 5 1 800 238 8444 www middleby com Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin IL 60120 USA 847 741 3300 FAX 847 741 4406 24 Hour Service Hotline THE MIDDLEBY CORPORATION Marshall Vz Middleby 22
7. shown in Figure 2 13 The power lines then connect to the oven circuits through safety switches located inside the machinery compartment and each blower motor compartment These switches interrupt electric power to the oven when the Machinery Compartment Access Panel is opened OR when either of the rear shrouds is removed Refer to the wiring diagram inside the machinery compartment ofthe oven to determine the correct connections for the electrical supply lines Connect the supply as indicated on the wiring diagram Be sure to connect the electrical supply ground wire to the oven ground screw located in the junction box on the rear of the oven 3 If incoming pressure is over 14 W C 35mbar a sepa rate regulator MUST be installed in the line BEFORE the individual shutoff valve for the oven WARNING To prevent damage to the control valve regula tor during initial turn on of gas itis very important to open the manual shutoff valve very slowly After the initial gas turn on the manual shutoff valve must remain open except during pressure testing as outlined in the above steps or when necessary during service main tenance SECTION2 INSTALLATION A GasUtility Rough In Recommendations The following gas system specifications are STRONGLY RECOMMENDED Deviating from these recommendations may affect the baking performance of the oven Gas Meter One or two oven cavities 750 cfh meter Three or four oven cavities 1200
8. Figure 4 5 Removing Air Fingers and Plates Manifold Inner plate Outer plate Figure 4 6 Checking the conveyor tension 4 Conveyor tension adjustment screws idler AE end only 3 4 75 100mm vertical deflection lil MAINTENANCE EVERY 3 MONTHS A Check that the oven is cool and the power is disconnected as described in the warning at the beginning of this Section B Vacuum both of the blower motors and their surrounding compartments using a shop vacuum C Tighten all electrical control terminal screws D SplitBeltDisassembly and Cleaning For split belt ovens ONLY disassemble clean and lubricate the conveyor shaft components as described below 1 Remove the motor shroud conveyor extensions and con veyor as described in Part Il Monthly Maintenance 2 Remove the master links from each conveyor belt Then roll the belts up along the length of the conveyor to remove them from the frame 3 Remove the two conveyor adjustment screws from the idler end of the conveyor frame as shown in Figure 4 7 4 Remove the idler shaft assembly from the conveyor 5 Pull apart the two sections of the idler shaft Clean the shafts thoroughly using a rag Then lubricate both the extended shaft and the interior of the hollow shaft using an FDA approved light food grade lubricant CAUTION DO NOT lubricate the shafts using WD40 or a s
9. SUPPLIER AND INSTRUCTIONS TO BEFOLLOWED IN THE EVENT YOU SMELL GAS Instructions to be followed in the event the user smells gas shall be obtained by consulting the local gas supplier If the smell of gas is detected immediately call the emergency phone number of your local Gas Company They will have personnel and provisions available to correct the problem FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors or 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 operating and maintenance instructions thoroughly before installing or servicing this equipment IMPORTANT An electrical wiring diagram for the oven is located inside the machinery compartment IMPORTANT Itis the customer s responsibility to report any concealed or non concealed damage to the freight company Retain all shipping materials until itis certain that the equipment has not suffered concealed shipping damage NOTICE CONTACT YOUR MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENT TO PERFORM MAINTENANCE AND REPAIRS AN AUTHORIZED SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN NOTICE Using any parts otherthan genuine Middleby Marshall factory manufactured parts relieves the manufacturer of all warranty and liability NOTICE Middleby Marshall Manufacturer reserves the right to change specificatio
10. 2 2 2 2 23122 0007 Elbow 90 1 1 4 dia 9 4 4 4 4 22450 0028 Adjustable leg 6 152mm 10 1 1 1 1 1 33120 0056 Gas pipe 1 1 4 dia X 54 1372mm L 11 1 1 1 1 1 22450 0253 Restraint cable 60 1524mm L 12 1 1 1 1 1 21392 0005 Eyebolt 13 1 1 1 1 1 37210 0055 Base pad 2 2 2 2 2 35210 0656 Top cover Right or Left 8 8 8 8 8 21256 0069 Screw slt trs hd 10 32 X 1 1 4 2 2 2 2 2 21292 0001 Screw hex washer hd 10 16 X 3 4 16 16 16 8 21216 0018 Bolt hex cap 1 2 13 X 1 1 4 16 16 16 8 21416 0003 Flat washer 1 2 16 16 16 8 21426 0004 Lock washer 1 2 16 21216 0001 Bolt hex cap 3 8 16 X 1 SECTION2 INSTALLATION VENTILATION SYSTEM IMPORTANT Where national or local codes require the installation of fire suppression equipment or other supplementary equipment DO NOT mount the equipment directly to the oven MOUNTING SUCH EQUIPMENT ON THE OVEN MAY VOID AGENCY CERTIFICATIONS RESTRICT SERVICE ACCESS LEAD TO INCREASED SERVICE EXPENSES FOR THE OWNER A Requirements CAUTION Gas oven installations REQUIRE a mechanically driven ventilation system with electrical exhaust air sensing control PROPER VENTILATION OF THE OVEN IS THE RESPONSIBILITY OF THE OWNER B Recommendations NOTE THAT THE HOOD DIMENSIONS SHOWN IN FIGURE 2 3 ARE RECOMMENDATIONS ONLY LOCAL NATIONAL AND INTERNATIONAL CODES MUST BE FOLLOWED WHEN INSTALLING THE VENTILATION SYSTEM ANY APPLI
11. CABLE CODES SUPERSEDE THE RECOMMENDATIONS SHOWN IN THISMANUAL The rate of air flow exhausted through the ventilation system may vary depending on the oven configuration and hood design Consult the hood manufacturer or ventilation engineer for these specifications To avoid a negative pressure condition in the kitchen area return air must be brought back to replenish the air that was exhausted A negative pressure in the kitchen can cause heat related problems to the oven components as if there were no ventilation at all The best method of supplying return air is through the heating ventilation and air conditioning HVAC system Through the HVAC system the air can be temperature controlled for summer and winter Return air can also be brought in directly from outside the building but detrimental effects can result from extreme seasonal hot and cold temperatures from the outdoors NOTE Return air from the mechanically driven system must not blow at the opening of the baking chamber Poor oven baking performance will result C Other ventilation concerns e Special locations conditions or problems may require the services of a ventilation engineer or specialist Inadequate ventilation can inhibit oven performance t is recommended that the ventilation system and duct work be checked at prevailing intervals as specified by the hood manufacturer and or HVAC engineer or specialist Fig 2 3 Ventilation System
12. NLY by a Middleby Marshall Authorized Service Agent MAINTENANCE DAILY Figure 4 1 FrontCooling Fans Check that the oven is cool and the power is disconnected as described in the warning at the beginning of this Section Foam filter Clean the outside of the oven with a soft cloth and mild detergent Clean the front cooling fans as follows Snapoffthe protective grille and wipe it clean with a cloth See Figure 3 1 Remove the foam filter and inspect it If itis dusty shake it briskly If dirt or grease is present on the filter wash it in warm soapy water Rinse the filter squeeze it to remove as much of the water as possible and then set Protective grill it aside to dry thoroughly before reinstallation Once the filter is dry reinstall the filter and grille Clean ALL of the cooling fan grills and vent openings with a stiff nylon brush Figure 4 2 Crumb trays Check that ALL cooling fans are operating properly CAUTION If a cooling fan is not operating correctly it must be replaced IMMEDIATELY Operating the oven without adequate cooling can damage the oven s internal components Clean the conveyor belts with a stiff nylon brush This is All Mike oven cavities more easily accomplished by allowing the conveyor to run Crumb trays with slots Crumb trays without slots Lower oven cavity ONLY while you stand at the exit end of the conveyor Then brush the crumbs off the conveyor as it m
13. Outside master link orientation V FINAL ASSEMBLY 1 Refer to Figure 2 12 to determine the correct locations of the crumb trays 2 Install the crumb trays underneath the conveyor as shown in Figure 2 12 First place the inside edge of the tray onto theretainer Then swing the outside edge ofthe tray up and into place 3 Press the conveyor end stop and rear stop down over the edge of the conveyor frame VI ELECTRICAL SUPPLY WARNING Authorized supplier personnel normally accomplish 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 of the oven NOTE The electric supply installation must satisfy the requirements of the appropriate statutory authority such as the National Electrical Code NEC ANSI NFPA70 U S A the Canadian Electrical Code CSA C22 2 the Australian Code AG601 or other applicable regulations NOTE The electric supply connection must meet all national and local electrical code requirements Check the oven serial plate before making any electric supply connections Electric supply connections must agree with data on the oven serial plate A fused disconnect switch or a main circuit breaker customer furnished MUST be installed in the electric supply line for each oven cavity It is recommended that this switch circuit breaker have lockout tagout cap
14. PS570S P N 39141 Gas USA amp Std Export iddleby Rev C V1 10 00 English e Marshall PS570S Gas Oven Model Combinations e 55705 Single Oven Double Oven Two Stack Triple Oven Three Stack e Quad Oven Four Stack OWNER S OPERATING amp INSTALLATION MANUAL 2000 Middleby Marshall Inc V Middleby 77248 Marshall is a registered trademark of Middleby Marshall Inc All rights reserved Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin IL 60120 847 741 3300 FAX 847 741 4406 1 NOTICE This Owner s Operating and Installation Manual should be given to the user The operator of the oven should be familiar with the functions and operation of the oven This manual must be kept in a prominent easily reachable location near the oven Gas ovens are designed for use with EITHER natural gas OR liquid propane gas as specified on the serial plate Where permitted by local and national codes the oven can be converted from natural gas to propane operation orfrom propane to natural gas operation This conversion requires the installation of the appropriate Middleby Marshall Gas Conversion Kit by an Authorized Service Agent It is suggested to obtain a service contract with a Middleby Marshall Authorized Service Agent WARNING POST INAPROMINENT LOCATION THE EMERGENCY TELEPHONE NUMBER OF YOURLOCAL GAS
15. ROUBLESHOOTING 16 SECTION4 REGULARMAINTENANCE 17 IL MAINTENANCE DAILY sese 17 MAINTENANCE MONTHLY 18 Ill MAINTENANCE EVERY 3 MONTHS 19 IV MAINTENANCE EVERY 6 MONTHS 20 V KEYSPAREPARTSKIT 21 SECTION 5 ELECTRICAL WIRING DIAGRAM 22 SECTION 1 DESCRIPTION OVEN COMPONENTS see Figure 1 1 L Gas Burner Heats air which is then projected to the air fingers by the blowers A Conveyor Drive Motor Moves the conveyor B Crumb Pans Catch crumbs and other material that drop M Blowers Project hot air from the burner to the air fingers through the conveyor belt One crumb pan is located at N AirFingers Projectstreams of hot air onto the food product each end of the conveyor C D Conveyor End Stop and Rear Stop Preventfood products from falling off the end or rear of the moving conveyor Figure 1 1 Oven Components Conveyor Moves the food product through the oven m End Plugs Allow access to the oven s interior G Eyebrows Can be adjusted to various heights to prevent heat loss into the environment H Window Allows the user to see and access food products inside the baking chamber Machinery Compartment Access Panel Allows access to the oven s interior and control components No user servi
16. Turn the HEAT 07 BLOWER DI CONVEYOR a switches to HEAT the OFF position Wait for AT LEAST FIVE MINUTES OFF before restarting the oven Then repeat the Daily Startup a 6 Turn the HEAT or 87 switch to the ON or I position and wait for the HEAT ON light to turn on procedure CAUTION In case of power failure turn all switches to the OFF or O position open the oven window and remove the product After the power has been restored perform the normal startup procedure Middleby Marshall PO Quaron ZI Se d Oact TEMP O sPLOCK OVER TEMP m The burner will not operate and gas will notflow through the burner without electric power No attempt should be made to operate the oven during a power failure QUICK REFERENCE DIGITAL TEMPERATURE CONTROLLER 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 Quick Reference Troubleshooting in this section Temperature Key Press this key once to view the Actual Tempera ture in the Display Display Shows the Set Point or the Actual Temperature in degrees Fahren heit F or Celsius C HEAT ON Light Lights when the burner is in opera tion
17. ability The supply conductors must be of the size and material cop per recommended Refer to the wiring diagram inside the machinery compartment of the oven Electrical specifications are also listed on the oven s serial plate The oven requires a ground connection to the oven ground screw located in the electrical junction box The box is shown in Figure 2 13 If necessary have the electrician supply the ground wire Do NOT use the wiring conduit or other piping for ground connections VII GAS SUPPLY CAUTION DURING PRESSURE TESTING NOTE ONE OF 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 45 kPa 2 The oven must be isolated from the gas supply piping system by closing its individual manual shutoff valve dur ing any pressure testing of the gas supply piping system at test pressure equal to or less than 1 2 psi 3 45 kPa SECTION 2 INSTALLATION Figure 2 12 Crumb trays Crumb trays without slots Crumb trays with slots pe Lower oven cavity ONLY Gas Inlet One per Single Double Triple or Quad Oven TA iim Electrical Junction Box One per oven cavity All electric supply connections are made via the electrical junction box on the rear of the oven
18. as Type Main Orifice ID Pilot Orifice D Supply Inlet Pressure Pressure Natural 0 250 6 35mm 0 028 0 71mm 6 12 W C 14 9 29 9mbar 3 5 W C 8 7mbar Propane 0 152 3 86mm 0 018 0 46mm 11 14 W C 27 4 34 9mbar 10 W C 24 9mbar Table 4 Electrical specifications per oven cavity Main Blower Voltage Control Circuit Voltage Phase Freg Current Draw Poles Wires 208 240V 120V witransformer 1Ph 50 60Hz 12A 3Pole 4 Wire 2 hot 1 neut 1 gnd IMPORTANT Additional electrical information is provided on the oven s serial plate and on the wiring diagram inside the machinery compartment 4 SECTION2 INSTALLATION WARNING For gas ovens after any conversions readjustments or service work on the oven Perform a gas leak test Test for correct air supply Test for proper combustion and gas supply Check that the ventilation system is in operation WARNING Keep the appliance area free and clear of combustibles WARNING The oven must be installed on an even level non flammable flooring and any adjacent walls must be non flammable Recommended minimum clearances are specified in the Description section of this Manual 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 CAUTION For additional installation
19. ate statutory authority Gas oven installtions must conform with AGA Code AG601 SECTION2 INSTALLATION Figure 2 1 Installation Kit Figure 2 2 Base Pad Kit SECTION2 INSTALLATION l INSTALLATION KIT see Figure 2 1 NOTE One Installation Kit is required for each oven cavity Item Qty Part No Description 1 1 35900 0148 Conveyor rear stop 2 1 35000 1103 Conveyor end stop 3 1 33120 0053 Gas pipe nipple 4 1 39141 Owner s Operating and Installation Manual PS570S Gas Ovens 5 1 1002040 Middleby Marshall Authorized Service Agency Listing BASE PAD KIT see Figure 2 2 NOTE One Base Pad Kit is required for each Single Double Triple or Quad Oven installation Qty pago OL RUNE oe due Item 10 legs 15 legs Part No Description _1a B 4 RU COE 37210 0060 x ale Leg extension 19 483mm _ _1b e 4 nt AER 37210 0082 on Leg extension 10 254mm _ FERAE 1c 4 37210 0057 Leg extension 15 381mm 2 4 4 4 4 37115 0102 Caster swivel with 3 4 mounting stud 3 2 22290 0010 Caster swivel with flat mounting plate 4 2 22290 0009 Caster swivel with flat mounting plate and brake 5 1 1 1 1 1 22361 0003 Flexible gas hose 1 1 4 dia X 72 1829mm L 6 2 2 2 2 2 27271 0004 Pipe clamp 1 1 2 7 2 2 2 2 2 33120 0055 Nipple 1 1 4 dia X 3 76mm L NPT 8 2
20. cable parts are located in the machinery compart ment J Control Panel Location of the operating controls for the oven Not Shown K Serial Plate Provides specifications for the oven that affect installation and operation OVEN SPECIFICATIONS Table 1 Dimensions Single Oven Double Oven Triple Oven Quad Oven Overall Height inc top and legs as appropriate 46 1 8 1172mm 60 1 8 1527mm 62 1 2 1588mm 78 1981mm Overall Depth inc rear shrouds 61 3 4 1568mm 61 3 4 1568mm 61 3 4 1568mm 61 3 4 1568mm Overall Length 106 2692mm 106 2692mm 106 2692mm 106 2692mm Conveyor Width 32 813mm 32 813mm 32 813mm 32 813mm or 2x15 381mm or 2x15 381mm or 2x15 381mm or 2x15 381mm Recommended Minimum Clearances _ Rear of Oven inc rear shrouds to Wal Omm Omm mm Conveyor Extension to Wall both ends Omm Omm Omm Omm Table 2 General Specifications per oven cavity Weight 1400 Ibs 634kg Shipping Weight 1750 Ibs 780kg Shipping Cube 160 3 ft 4 53m Rated Heat Input 170 000 BTU 42 840 kcal 50 kW hr Maximum Operating Temperature 550 F 288 C Air Blowers Two blowers at 1400 ft min 39 6m min at 2050 RPM 0 40 1 0cm Water Static Pressure Average Air Jet Velocity 2600 ft min 1320cm sec average Warmup Time 15 min Table 3 Gas orifice and pressure specifications per oven cavity Orifice Manifold G
21. cfh meter Gas Line DEDICATED LINE from the gas meter to the oven 2 1 2 63 5mm pipe for natural gas 2 50 8mm pipe for propane Maximum length 200 61m Each 90 elbow equals 7 2 13m of pipe Check the oven s gas supply requirements before making the gas utility connection Gas supply requirements are listed on the oven s serial plate Connection Check the serial plate to determine the type of gas Propane or Natural to be used with the oven Refer to the instructions in the gas hose package included in the Installation Kit before connecting the gas line One gas line connection method is shown in Figure 2 14 however compliance with the applicable standards and regulations is mandatory Inlet regulated and pilot gas pressure readings can be taken using a U tube manometer at the tap locations shown in Figure 2 15 NOTE In the USA the installation must conform with local codes or in the absence of local codes with the National Fuel Gas Code ANSI Z223 1 In Canada the installation must conform with local codes or in the absence of local codes with the Natural Gas Installation Code CAN CGA B 149 1 or the Propane Installation Code CAN CGA B 149 2 as applicable In Australia the installation must conform with AGA Code AG601 and with any requirements of the appropriate statutory authority Certain safety code requirements exist for the installation of gas ovens refer to the beginning of this Sec
22. e oven for cleaning or servicing disconnect the gas supply connection before moving the oven When all cleaning and servicing is complete 3 Reconnect the electrical supply 4 Turn on the full flow gas safety valve Test the gas line connections for leaks using approved leak test sub stances or thick soap suds Turn on the electric supply circuit breaker s 1 Ifthe oven was moved for servicing return the oven to its original location Adjust the legs so that they are seated properly on the floor For quad ovens lock the two front casters Reconnect the gas supply Perform the normal startup procedure WARNING Possibility of injury from moving parts and electrical shock exists in this oven Switch off and lockout tagout the electric supply BEFORE beginning to disassemble clean or service any oven Never disassemble or clean an oven with the BLOWER switch or any other circuit of the oven switched on CAUTION NEVER use a water hose or pressurized steam cleaning equipment when cleaning this oven DO NOT use excessive amounts of water to avoid saturating the oven insulation DO NOT use a caustic oven cleaner which can damage the aluminized bake chamber surfaces NOTE ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized Service Agent It is also strongly recommended that the 3 Month Maintenance and 6 Month Maintenance procedures in this section be performed O
23. eck that the Set Point is correctly set Check that both the BLOWER or lt and HEAT or 8 Switches are in the ON or I position Ifthe oven still will not heat turn the HEAT or 84 BLOWER or and CONVEYOR or switches to the OFF or O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Startup procedure Check that the Set Point is above 200 F 93 C Turn the oven off and allow it to cool Disconnect electrical power to the oven Refer to the Maintenance section of your Owner s Manual for instructions on reassembling the air fingers Turn the oven off and allow it to cool Disconnect electrical power to the oven Check if the conveyor is blocked by an object inside the oven Refer to the Maintenance section of your Owner s Manual for instructions on reassembling the air fingers Check that the set temperature and bake time settings are correct IF THESE STEPS FAIL TO RESOLVE THE PROBLEM CONTACT YOURLOCAL MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENT A SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN l A B SECTION 4 MAINTENANCE WARNING Before ANY cleaning or servicing of the oven perform the following procedure 1 Switch off the oven and allow it to cool Do NOT service the oven while it is warm 2 Turn off the electric supply circuit breaker s and disconnect the electric supply to the oven 3 Ifitis necessary to move th
24. er connecting the restraint cable move the oven to its final location For single double and triple ovens adjust the 6 152mm legs so that the casters are off the floor For quad ovens lock the two front casters C ConveyorInstallation NOTE Split belt conveyors can only be installed from the end of the oven with the drive motor Single belt conveyor assemblies may be inserted into either end of the oven If it is to be installed from the end of the oven without the drive motor the drive sprocket assembly must be removed To remove the drive sprocket if necessary loosen the set screw on the conveyor collar as shown in Figure 2 8 Then pull the sprocket assembly straight out SECTION2 INSTALLATION Figure 2 4 Legs and Casters for Single or Double Oven Left or Right Side of oven Front or Rear of oven 1 2 flat washer 1 2 lock washer 1 2 13 x 1 1 4 hex screw Caster uses Leg uses OUTSIDE INSIDE hole closest to front hole or rear of oven Figure 2 5 Legs and Casters for Triple Oven Left or Right Side of oven Front or Rear of oven Leg uses OUTSIDE hole closest to front or rear of oven Caster uses INSIDE hole Figure 2 6 Legs and Casters for Quad Oven Left or Right Side of oven Front or Rear of oven Locking casters FRONT of oven Non locking casters 1 2 flat REAR of oven washer SE gt 3 8 flat 1 2 lock gt washer was
25. faces UP and that the belt and master links are oriented as shown in Figure 4 10 15 Reassemble the conveyor motor shroud and conveyor extensions onto the oven 16 Check the tension of the conveyor belt as shown in Figure 4 6 The belt should lift between 3 4 75 100mm If necessary adjust the belt tension by turning the conveyor adjustment screws SECTION4 MAINTENANCE Figure 4 7 Split Belt Idler Shaft Conveyor adjustment screw Figure 4 8 Split Belt Drive Shaft Locking collar Figure 4 9 Washer and Spacer Bronze washer on BOTH idler and drive shafts Nylon spacer on drive shaft ONLY Figure 4 10 Conveyor and Master Link Orientation Direction of travel CORRECT master link position Incorrect master link position SECTION4 MAINTENANCE E Blower Belts F 1 To gain access to each blower belt compartment remove the four screws shown in Figure 4 11 Then lift the rear shroud off its hangers 2 Check each blower belt for at least 1 25mm deflec tion at the center and for cracking or excessive wear See Figure 4 12 Overtightening the belt will cause premature bearing failure and possible vibrations 3 Ifnecessary adjust the tension of the belt by loosening the four motor mounting bolts Reposition the motor as neccessary until the correct deflection is reached then tighten the
26. her p N 4 2 18 1 1 4 hex screw PN 3 8 lock 3 8 16 x 1 washer hex screw SECTION2 INSTALLATION 1 Lift the conveyor and position it in the oven as shown in Figure 2 9 Continue moving the conveyor into the oven until the frame protrudes equally from each end of the oven about 18 457mm Check that the retainers located on the underside of the conveyor frame rest firmly against the lower end plugs as shown in Figure 2 9 When the conveyor is positioned properly check for free dom of movement of the conveyor belt by pulling it for about 2 3 feet 60 to 90 cm with your fingers The conveyor must move freely If the drive sprocket was removed when installing the conveyor replace it at this time Install the drive chain between the conveyor drive sprocket and the motor sprocket To install the chain it will be necessary to lift the drive end of the conveyor slightly Install the conveyor drive motor cover Check the tension of the conveyor belt as shown in Figure 2 10 The belt should lift between 3 4 75 100mm DO NOT OVERTIGHTEN THE CONVEYOR BELT NOTE If necessary the belt tension can be adjusted by turning the conveyor adjustment screws located at the idler right end of the conveyor See Figure 2 10 If necessary links can be added to or removed from the conveyor belt to achieve the correct deflection of 3 4 75 100mm If links must be removed from the belt it can be reattached
27. imilar product This can cause the shafts to wear rapidly 6 Before reassembling the shafts into the conveyor frame check that they are oriented properly Remember that unequal width split belt ovens should ALWAYS have the narrower belt at the front of the oven 7 Reassemble the idler shaft into the conveyor Make sure that the bronze washer is in place between the two sections of the shaft See Figure 4 9 8 Replace the conveyor adjustment screws as shown in Figure 4 7 To allow the conveyor belt to be reinstalled later do not tighten the screws at this time 9 Loosen the set screw on both of the conveyor drive sprock ets Then remove the sprockets from the shaft 10 Loosen the locking collar set screw See Figure 4 8 11 Push the drive shaft to the left then lift it free of the conveyor frame Then disassemble and lubricate the two sections of the drive shaft as described in Step 5 12 Before reassembling the shafts into the conveyor frame check that they are oriented properly Remember that unequal width split belt ovens should ALWAYS have the narrower belt at the front of the oven 13 Reassemble the drive shaft into the conveyor Check that the nylon spacer is in place as shown in Figure 4 9 Also check that the bronze washer is in place between the two sections of the shaft 14 Replace the drive sprockets Reassemble the belts and master links onto the conveyor Check that the smooth side of the conveyor belt
28. information contact your local Authorized Service Agent NOTE There must be adequate clearance between the oven and combustible construction Clearance must also be provided for servicing and for proper operation NOTE An electrical wiring diagram for the oven is located inside the machinery compartment NOTE All aspects of the oven installation including placement utility connections and ventilation requirements must conform with any applicable local national or international codes These codes supercede the require ments and guidelines provided in this manual NOTE In the USA the oven installation must conform with local codes In the absence of local codes gas oven installations must conform with the National Fuel Gas Code ANSI Z223 1 Gas ovens 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 In Canada the oven installation must conform with local codes In the absence of local codes gas oven installations must conform with the Natural Gas Installation Code CAN CGA B149 1 orthe Propane Gas Installation Code CAN CGA B149 2 as applicable Gas ovens when installed must be electrically grounded in accordance with local codes or in the absence of local codes with the Canadian Electrical Code CSA C22 2 NOTE In Australia the oven installation must conform with any requirements of the appropri
29. motor mounting bolts Lubricating the Blower Fan Bearings 1 Useagrease gun to lubricate the main blower fan shaft bearings as shown in Figure 4 13 When lubricating the bearings Use a high quality 2 lithium soap grease with petroleum oil such as Middleby P N 17110 0015 Add the grease slowly until a small bead of grease is present atthe seals AVOID OVERGREASING Excessive greasing may harm the bearing 2 Manually turn the blower shaft by pulling on the belt to purge the grease 3 Wipe off any excess grease on the bearings Then replace the shrouds onto the oven NOTE Theoven will notoperate unless both of the rear shrouds are in place MAINTENANCE EVERY 6 MONTHS Check that the oven is cool and the power is disconnected as described in the warning at the beginning of this Section Check for excessive wear on the conveyor drive motor brushes The brushes should be replaced if they have worn to less than 1 4 6 4mm in length Be sure to replace the brushes in exactly the same position Clean and inspect the burner nozzle and electrode assem bly Check and clean if necessary the oven venting system Check the conveyor drive shaft bushings and spacers Replace the components if they are worn 20 Figure 4 11 Rear Shrouds Screws 2 per fan cover i M P RN Screws NA T y 2 per shroud N NG an NN
30. ns at any time NOTICE The equipment warranty is not valid unless the oven is installed started and demonstrated under the supervision of a factory certified installer Retain This Manual For Future Reference 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 TABLE OF CONTENTS SECTION 1 DESCRIPTION esent OVEN COMPONENTS SECTION 2 1 5 IL INSTALLATIONKIT I BASE PAD tnm timet onda Ill VENTILATION SYSTEM Requirements aria B Recommendations C Other Ventilation ASSEMBLY 2 2 8 4 es entes 9 Base Pad Legs Casters and Stacking B Restraint Cable Installation Conveyor d DE SE Conveyor Drive Motor Crumb Pans e Conveyor End 5 Conveyor Rear Stop COonveyor aue aie repete End Plugs ees teet Matta VWINdow iih
31. ot be reaching the oven or the controls may be set incor rectly The gas burner did not light within 90 seconds of turn ing the HEAT Switch to the ON or I position This automatically engages a safety lockout mode The oven did not reach 200 F 93 C within 15 min utes of startup and the oven has stopped heating Controls may be set incor rectly Air fingers may have been reassembled incorrectly after cleaning Conveyor may be jammed on an object in the oven or conveyor belt or drive chain tension may be incorrect Controls may be set incor rectly SOLUTION Follow the procedures under Daily Shutdown Procedures in this section to shut down the oven Contact your Middleby Marshall Authorized Service Agentto determine and correctthe cause of the condition to prevent damage to the oven Check that the circuit breaker fused disconnect is turned on Check that the BLOWER or Switch is in the ON or I position The burner cannot engage until the blowers are in operation Turnthe HEAT or 382 BLOWER or W and CONVEYOR or a gt switches to the OFF or O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Startup procedure Turn the HEAT or 182 BLOWER or lt and CONVEYOR or a gt switches to the OFF or O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Startup procedure Ch
32. ottom Row B1 T2 3 4 T5 T6 B2 B3 B4 B5 B6 Disassemble the air fingers as shown in Figure 4 5 AS EACH FINGER IS DISASSEMBLED WRITE THE LOCA TION CODE FOR THE FINGER ON ALL THREE OF ITS PIECES This will help you in correctly reassembling the air fingers CAUTION Incorrect reassembly of the air fingers will change the baking properties of the oven Clean the air finger components and the interior of the baking chamber using a vacuum cleaner and a damp cloth Refer to the boxed warnings at the beginning ofthis Section for cleaning precautions Reassemble the air fingers Then replace them in the oven using the location code as a guide Replace the end plugs on the oven Reassemble the conveyor into the oven Ifthe drive sprocket was removed when installing the conveyor replace it at this time Reattach the drive chain Check the tension of the conveyor belt as shown in Figure 4 6 The belt should lift between 3 4 75 100mm DO NOT OVERTIGHTEN THE CONVEYOR BELT If necessary the belt tension can be adjusted by turning the conveyor adjustment screws located at the idler right end of the conveyor Replace the crumb trays and drive motor shroud 18 Figure 4 3 Removing the Conveyor Drive Sprocket Loosen conveyor collar Set screw then pull sprocket straight out RAUM AN Ny N NN Y ast aU pe f S N
33. ould be installed into the INSIDE hole 2b Legs Casters Installation Triple Ovens Install one adjustable leg and one caster into the 3 4 holes on the bottom of the base pad as shown in Figure 2 5 The adjustable leg should be installed into the OUTSIDE hole closest to the front or rear face of the oven The caster should be installed into the INSIDE hole 2c Legs Casters Installation Quad Ovens Install one outrigger to each corner of the base pad using the 1 2 13x1 1 4 bolts 1 2 flat washers and 1 2 lockwashers supplied in the Installation Kit See Figure 2 6 Install the casters onto the outriggers using the 3 8 16x1 screws 3 8 flat washers and 3 8 lockwashers supplied in the Installation Kit The two locking casters should be installed on the front side of the oven 3 Install the base pad onto the lower oven cavity Check that the eyebolt welded onto the pad faces the rear of the oven 4 Stacktheovencavities If necessary referto the instructional videotape provided with the Stacking Lift Kit P N 30580 B Restraint Cable Installation Because the oven is equipped with casters a restraint cable assembly must be installed to limit the movement of the appliance without depending on the connector and the quick disconnect device or its associated piping One end ofthe cable is anchored to the eyebolt on the rear surface of the oven s base pad while the other is anchored to the wall See Figure 2 7 Aft
34. ovens have one controller for each conveyor belt labeled FRONT and BACK Digital Temperature Controller Continuously monitors the oven temperature Settings on the Digital Temperture Controller control the activa tion of the gas burner F Machinery Compartment Access Panel Safety Switch Disconnects electrical power to the controls and the blow ers when the machinery compartment access panel is opened The panel should only be opened by authorized service personnel 13 SECTION3 OPERATION NORMAL OPERATION STEP BY STEP Wait for the oven to heat to the setpoint temperature Higher setpoint temperatures will require a longer wait The oven A DAILYSTARTUPPROCEDURE can reach a temperature of 500 F 232 C in approximately 5 minutes 1 Check that the circuit breaker fused disconnect is in the on sit Er Gea eee Se ici asus position If the oven is equipped with a window check that Optional Pressthe Tem pag eoe the window is closed perature key to show CHE Hp Se Se ee Se qas the Actual Temperature i Sr wait B H O ovt MP 2 Turnthe BLOWER ord the display and waitfor for switch to the ON or OFF ON the ACTUAL TEMP light En ACTUAL position ITN to turn on This allows i i you to monitor the oven 7 temperature as it rises to the setpoint 3 Tumthe CONVEYOR or CONVEYOR Allow the oven to preheat for 10 minutes af
35. oves Remove and clean the crumb trays Be sure to replace the trays in the same positions from which they were removed because they are NOT identical Refer to Figure 3 2 Clean the window in place SECTION4 MAINTENANCE A MAINTENANCE MONTHLY Check that the oven is cool and the power is disconnected as described in the warning at the beginning of this Section Remove the crumb trays and drive motor shroud from the oven Lift the drive end ofthe conveyor slightly and push it forward into the oven This removes the tension from the drive chain Then remove the drive chain from the conveyor sprocket NOTE Split belt conveyors can only be removed from the end of the oven with the drive motor Single belt conveyor assemblies may be removed from either end of the oven If it is to be removed from the end of the oven without the drive motor the drive sprocket assembly must be removed To remove the drive sprocket if necessary loosen the set screw on the conveyor collar as shown in Figure 4 3 Then pull the sprocket assembly straight out Slide the conveyor out ofthe oven folding itas itis removed See Figure 4 4 Remove the end plugs from the oven Slide the air fingers and blank plates out of the oven as shown in Figure 4 5 AS EACH FINGER OR PLATE IS REMOVED WRITE A LOCATION CODE ON IT WITH A MARKER to make sure that it can be reinstalled correctly Example of markings Top Row T1 B
36. pressure is oven cavity Burner pressure is Blower measured On Off Knob Always leave in ON position Gas line for other oven cavities Nipple 1 1 4 dia X 3 76mm L NPT measured Gas Burner Modulating gas valve Se Manual shutoff Pilot pressure tap where pilot gas pressure is Combination Gas measured Control Valve Safety Regulator Elbow 90 1 1 4 dia SECTION 3 OPERATION l LOCATION AND DESCRIPTION OF CONTROLS Fig 3 1 Control Panel A BLOWER switch B C HEAT CONVEYOR 383 switch cv switch wes TEMPERATURE HE CONVEYO E Digital Temperature Arial controller se O over TEMP A BLOWER Switch Turns the blowers and cooling fans on and off The HEAT Switch has no effect unless the BLOWER Switch is in the ON position HEAT Switch Allows the gas burner gas ovens or heating elements electric ovens to light Activation of the gas burner is determined by the settings on the Digital Temperature Con troller CONVEYOR Switch Turnsthe conveyordrive motor on and off NOT SHOWN SOOF TUAL MP OFF ON OFF N BAKE TIME BAKE TIME Conveyor Speed controller s Conveyor Speed Controller Adjusts and dis plays the bake time Single belt ovens have one controller Split belt
37. ter it has reached a switch to the ON OFF ON the set point temperature or I position 4 DAILY SHUTDOWN PROCEDURE pe NN ETT Turn the HEAT or niis AER 4 f necessary adjust the and BLOWER or OFF ON OFF ON conveyor speed setting switches to the OFF or D by pressing the or v pushbuttons on the con veyor speed controller to change the displayed O position Note that the blowers will remain in operation until the oven has cooled to below QY Wy bake time 200 F 93 C 2 Make certain that there are no products left on the conveyor inside the oven Turnthe CONVEYOR or a switch to the OFF or O position CONVEYOR 5 Adjust the temperature controller to a desired set tempera ture if necessary Press the Set Point and Unlock keys at the same time Wait forthe SET PT light to turn on Middleby VIP Marshall If the oven is equipped with a window open the window to allow the oven to cool faster After the oven has cooled and the blowers have turned off switch the circuit breaker fused disconnect to the off posi e Press the Up Arrow ERES tion VI Marshail and Down Arrow Keys as necessary SUOF to adjust the set eam point IMPORTANT Ifthe HEAT ON light will not illuminate OR if the oven does not heat the gas burner may not have lit
38. tion for a list of the installation standards In addition because the oven is equipped with casters the gas line connection shall be made with a connector that complies with the Standard for Connectors for Movable Gas Appliances ANSI Z21 69 in U S A or if appli cable Connectors for Movable Gas Appliances CAN CGA 6 16 in Canada as well as a quick disconnect device that complies with the Standard for Quick Disconnect Devices for Use With Gas Fuel ANSI 721 41 in U S A or if applicable Quick Disconnect Devices for Use With Gas Fuel CAN1 6 9 in Canada C GasConversion Where permitted by local and national codes it is possible to convert ovens from natural to propane gas or from propane to natural gas Use the appropriate Middleby Marshall Gas Conversion Kit for the specific oven model A CAUTION The terms of the oven s warranty require all start ups conversions and service work to be performed by a Middleby Marshall Authorized Service Agent Figure 2 14 Flexible Gas Hose Installation To Gas Supply Pipe Full Flow Gas Shutoff Valve 90 I Elbow 54 1372mm gas pipe 90 Elbow 7 4 Flexible Gas Hose Union OR quick disconnect device Figure 2 15 Gas Burner and Piping Assembly Manifold Inlet pressure pressure tap _ tap where where manifold Cap for top incoming gas gas
39. to the conveyor as follows a The conveyor belt links must be oriented as shown in Figure 2 11 b The smooth side of the conveyor belt must face UP Connect the inside master links Check that the links are oriented as shown in Figure 2 11 d Connect the outside master links Note that the outside master links have right and left sides The right side master link has an open hook facing you as shown in Figure 2 11 e Check for freedom of movement the conveyor belt by pulling it for about 2 3 feet 60 to 90 cm with your fingers The conveyor must move freely f Return to Step 8 above to re check the belt tension Figure 2 10 Checking the conveyor tension 2 Conveyor tension adjustment screws idler a J end only 3 4 75 100mm vertical deflection Figure 2 7 Installing the Restraint Cable Restraint cable assembly 3 4 19mm eyebolt Eyebolt in base pad N Wall of structure Rear surface of oven base pad Figure 2 8 Removing the Conveyor Drive Sprocket Loosen conveyor collar Set screw then pull sprocket straight out Hi Retainer End plug Figure 2 11 Conveyor and Master Link Orientation Direction of travel CORRECT master link position Incorrect master link position Inside master link orientation
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