Middleby Cooking Systems Group PS520E User's Manual
Contents
1. Ob S O1N3NW313 99 91 31N3W3 1N3W313 1N3W313 79 61 89 0L eZ Goo g f Odil YvdOWYSL 6 9 quo f Odi s t THNIOWYSHL SSIv13H 71 881 S V1 9c f 3dAL 31d0O3OWH3HL 1OVLNOO AVT3H 5545 55865 BB P Vh el 89 Z YOLdNYYSLNI 295559 3uowomassoumam 555 by Ol u 8 L JMOLWWYOISNVYL a nei Es ae O HOLIVIAHOJSNVMHL m me 6 6 45 Lo oa Pesos S LL 9 10 3 8 OL o 59108 V ZH 09 09 06 2 aay A08Z 0FZ AMV OF SSI3M am 82 6 y9l ex LH LE IHM 02 78 SSI3M WHY SATION OdVd10dS HOLVIILNSA YOLdNYYILNI NC gt 16 V IOLN3A Y71130 1 O mv 2 99 a Q Y YOLNNASIC gt AD YNALWILNAA YNALVLAWWOD HOLIMS SH3LIVHOSNN3H L o2. M O AS 19 cv OONV 8 PM 9 N 39831 2 3 m YOSNAS A HOLON ossou m4 LOC 104 d o S Qo zm 730 3801OW OLANIN IIO me T 9 EN O SAG 31nNIN Odd 69 gt OLN3IIAVISAN3 C d 83d ONNLHOOASONNYSILSNP gt 16 19 pO 88888 2 UNALOdSNVYL YNALOW oa 5 gt 9 gt 09 OLIN3AVOQ3H33VH 22220 o m HOLOW ANOO 4 ox aly 8r II DOI INTA gaze 08 LOL OULSICLLNY AV1dSIG 9 9550 080015 2 E 3SV 1839 IH e 0 03345 l n 16 SERRA 6 z DS 28 ZOL 10H1NOO 1 YOAVLYOdSNVUL NS ASS HOLON KO ii 3TIOHLNOSMISIOIINIMHOS3O YOLOVLNOD 3YOLON 130 VIOLNAA Q SA ONNYANALS H349IONIMHOS39QNVS N3HOLON 3SV1839 02 71 Li N 9 rr O 9 YATIONLNOD HOA3ANOO YOLOW 0c kL GG Y Gl Lb YOL 901 190 GOL LON WOO LON WOO LON WOO x 2 S LOL SEP 2 ER H a
3. Wilddleby Marshal 990 Figure 1 1 Single PS520 Oven im 7777 Middleby gt Marshall Figure 1 3 Triple PS520 Oven SECTION 1 DESCRIPTION Conveyor Belt Width Heating Zone Length Baking Area Square Feet Overall Dimensions Standard Single Oven w Legs Overall Dimensions Double Oven Overall dimensions Triple Oven Weight of Single Oven Shipping Weight Operating Range Maximum Operating temperature Warm up Time Belt Speed Limits PS520 SERIES OVEN SPECIFICATIONS 18 00 457mm 20 00 5098mm 2 5 sq ft 023 sq m 42 00 1067mm L x 35 21 894mm W x 21 72 786mm H x 42 00 1067mm L x 35 21 894mm W x 37 27 947mm H x 42 00 1067mm L x 35 21 894mm W x 52 82 1342mm H x 250 Ibs 93 325 lbs 121 8 3 kW hr 550 F 287 C 20 min 1 10 minutes SERIES PS520 ELECTRICAL SPECIFICATIONS Main Blower amp Elements Voltage All Models 208 240V Non CE 380V Domestic Non CE 480V CE Only 380 400V Control Circuit Phase Voltage 208 240V 1 Ph 230 240V 1 Ph 208 240V 1 Ph 230 240V 1 Ph 3 Ph NOTE Wiring Diagrams are contained in Section 6 of this manual and are also located inside the Frequency 50 60 Hz 50 60 Hz 50 60 Hz 50 60 Hz 50
4. 3 E Air Fingers and Blank Plates Figure 4 8 amp 4 14 3 SECTION 2 INSTALLATION l UNLOADING u csncchastaanindecctbasadeciaddaantdicadieesdcsaamoantieundenss 4 PS520 Oven Installation Required Kits And 5 Oven Dimensions Single Double Triple 6 Utility Rough In Dimensions and Positioning PS520 Series Ovens 7 Circuit Breaker 7 Electrical Specifications 7 Electrical RAUNG 7 Supply em REM 7 0 IRR EE EEEE 7 Il VENTILATION GUIDELINES 7 II ELECTRICAL CONNECTION INFORMATION FOR PS520 SERIES OVENS 8 IV ELECTRIC SUPPLY FOR ELECTRIC HEATED OVEN uuu 8 SECTION 3 OPERATION CONTROL FUNCTIONS 9 Il COMPONENT FUNCTIONS 10 A Door Safety Switch 10 Blower Switch 10 Heat uu UU LULU 10 D Temperature Controller 10 E CY an 11 Measu
5. 7 YSTIONLNOD YOASANOD MS ANOD LS dfi Did YOLOW ANOJ SONLLL3S H31IMS did 64 LL VA00Z AMVONOD3S zH 09 0S HILIMS H3MO 8 AO8Z 07Z 2 M3T1041NO2 v LE uni viuda bis 02 YOLIVLNOD C7 99 gt 09 LS Q MO LOH J3M018 G L ON TANVd HI DNI 1003 002 TANVd VE 251 L NIVW 31 30 cl OL 1 v1 o VV OIN3W313 99 G UNIAN 3IN3W3 ININA IN3W a L1 ACSA 0 v9 ef 89 f Odll UWdOWesL juu
6. Drive Motor Figure 3 2 Interior View of Control Console 10 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 go through the bake chamber of the oven MEASURING CONVEYOR SPEED Minutes Seconds Figure 3 3 Conveyor Speed Digital Control See Figure 3 4 and 3 5 To check conveyor speed place a product item at the entrance end of the baking chamber as shown Time how long it takes for the leading edge of the item to go from the entrance end of the baking chamber to the exit end This should be the conveyor speed shown on the conveyor speed digital control NOTE In Figure 3 4 and 3 5 the oven shown is with Z the conveyor running left to right oS mm e 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 I Turn OFF O and lockout or tagout all electric power to the Figure 3 4 Product at entrance end of baking oven before attempting to clean or service the oven chamber BEGINNING OF TIMING Figure 3 5 Product at exit en
7. Middleby Marshall PS520 Series Electric Ovens English 24 5520 Single 090 6 52358 PS520 Triple TERTE LISTED 74 Hp A ion ion amp operat manual iy 7777 Middleby 7 Marehalli 4 SSS Marshall tallat m N LO 0 y Middleby o 2 T n T q if T 2 Ins WERTE c 7 5520 Double 2006 Middleby Marshall Inc 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 before installing or servic ing this equipment NOTICE The warranty is NOT VALID unless the oven is installed started and demon strated under the supervision of a factory authorized installer NOTICE Contact your authorized Service Agency to perform maintenance and repairs A Service Agency Directory is supplied with your oven NOTICE Using any parts other than genuine Middleby Marshall factory ma
8. 48 19 48 82 TUE OVERALL 38 81 CONVEYOR 23 27 CONVEYOR FRONT VIEW BACK VIEW 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 breaker with lockout tagout electrical shutoff for each oven Wire each oven separately 50 amp circuit breaker for 208 240V or 30 Amp circuit breaker for 380 480V ELECTRICAL SPECIFICATIONS ALL MODELS e208V main blower motors and elements 1 Ph 39 9 Amp draw 50 60 Hz 208V control circuit 2 pole 3 wire system per oven 2 hot 1 grd e230V main blower motors and elements 1 Ph 33 0 Amp draw 50 60 Hz 230V control circuit 2 pole 3 wire system per oven 2 hot 1 grd e240V main blower motors and elements 1 Ph 34 6 Amp draw 50 60 Hz 208 240V control circuit 2 pole 3 wire system per oven 2 hot 1 grd Non CE e380V elements 1 Ph 21 8 Amp draw 50 60 Hz 208 240V control circuit and main blower motor 3 pole 4 wire system per oven 2 hot 1 neut 1 grd Domestic and Non CE e480V elements 1 Ph 17 3 Amp draw 50 60 Hz 208 240V control circuit and main blower motor 3 pole 4 wire system per oven 2 hot 1 neut 1 grd CE Only e380V elements
9. 9 r 60 S x T OOILWWOLNV 8 c WOO ON c WOO ON WOO 2 2 oavi OGNI VH3SVuL 1 oqv1 ve 289 VULSINIS IG VULSINIS 1 5 VULSINIS IQ VHISAG 10 VULSINIS IQ Id 2109 ALIAS DANI 31I3S IANT 31I3S 1 3135 QNVH 1331 9 2105 FEE EM 3Honvo 2109 3103 3H9NY9 2109 34431 3TvdION 3d s1 uvas 251 LST NIV 33 SECTION 6 39 wesbeig 4 89185 Bue
10. E RIN 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 14 HEAT ON Light Lights when the burner is in operation SET PT setpoint Light Lights when the set point is shown in the display ACTUAL TEMP Light Lights when the Actual Temperature is shown in the display Service Key Service use only Set Point Key Press this key together with the Unlock Key to allow the Set Point to be changed Changes can only be made for 60 seconds V QUICK REFERENCE TROUBLESHOOTING SYMPTOM 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 no air is blowing from air fingers Conveyor moves with a jerky motion or will not move at all Food products are overcooked or undercooked PROBLEM The oven temperature ex ceeded 650 F 343 C and the burner was automati cally shut down Electrical power may not be reaching the oven or the controls may be set incor rectly The oven did not reach 200 F 93 F within 15 min utes of start up and the oven has stopped heating Controls may be set incor rectly Air fingers may have been reassembled incorrectly af ter cleaning Conveyor may be jammed on an object
11. 4 18 92 6l V 3I2NOVW BONS 3elel3l OONV Id SSI3AA OONVI8 Ee s O INNOD Ini3lvIniNINOO a ll N 9 uamo aod g SSI3M ISNOVIN 310d 7 MS ANOO lox V Ha AB AS ZV a orou ossou YOSNAS A Wd VN3QvO YOLOW pes OF ossou GO Vell 13A 3 JOION OLONIIN IHS 34410 gt gt SUCLOWCNVELOdSNVUL SIA JUNNIN oH 9 ONEIL ONt L 9 lO E 6 8288 O O 3SnOt UNALOdSNVUL UNALOW YNILOW IWIOT 3510933 SONILLAS gt gt 8 zz 6 09 0 ANOO v 19 2 gt gt ns HOLMS Zl 27 JINGOW 9 T gt gt 09 5 QVGIOOT3A AV ds 4 E OIN3IIAVIeIJN3 SO VIIOOT3A VTI3O OGNVNOD 8 gt gt XOAVIILNJA V ITIOULNOMSLISASIGNIMHDSIO 43346 el LIL LIZ OIN3IANGO3 HAV I z ES 21 1 3SS3llA NOOVINOdSNVAIL NOQVAIINGA VV 130 OQNVWOO 3HOIOIN 13d VIOIN3A ASWIEIS HNA ONNUSNALS NISAOIGNIMHOSSOGNVE YOLOVINOD 5 23 28 tInT IOHINOO 35V 1839 2 lt gt 55 s 5 YATIONINOD tIOA3ANOO 1N3IAS
12. 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 stiff nylon type brush 2 Check the air intake of the cooling fan daily The best time to check is right after starting the oven IMPORTANT NOTE The cooling fan operates when the blower switch is turned to ON or l must operate to keep the electrical control cabinet below 140 F 60 C WARNING IF FAN BLADE IS NOT ROTATING BROKEN OR FAN ASSEMBLY IS MISSING FROM MAIN BLOWER MOTOR SHAFT DO NOT OPERATE OVEN REPLACE COOLING FAN BLADE BEFORE OPERATING OVEN Serious damage could be done to the burner blower motor and or solid state electrical components if oven is operated while cooling fan is not running or vent grille is plugged 3 Using a stiff nylon brush clean control compartment vent grille C Conveyor Belt Figure 4 2 Everyday just after starting the oven stand at the unloading end of the conveyor and with a brush remove food particles crumbs etc clinging to the conveyor belt brushing them into the crumb pan 17 SECTION 4 MAINTENANCE D Crumb Pans Figure 4 2 WARNING Crumb pan is extremely hot while oven is operating Allow oven to cool before removing crumb pan
13. When oven is cool remove and clean the crumb pan at each end of the oven Each crumb pan can be removed by sliding it out as shown in Figure 4 2 Reinstall the crumb pans after cleaning Cooling Fan Grille M We OO Figure 4 1 Oven Cooling Fans 4 5 x AN H 4 q 4 4 H UI 4 M x Figure 4 2 Conveyor Belt and Crumb Pan Cleaning SECTION 4 MAINTENANCE I 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 of oven insulation will occur 2 Do not use caustic oven cleaner or the aluminized finger manifold surfaces will be severely damaged When cleaning your oven first remove all heavy debris with a vacuum cleaner Use a damp cloth for light cleaning For heavier cleaning of baked on grease and carbon deposits use a non caustic cleaner that will not Console Controls react with the aluminized finger manifold surfaces You can order non caustic cleaner from your local authorized Middleby Marshall Parts Distributor in the quantities listed below Part Quantity
14. 9 a YNALONOPSIG bad 29222 vezeo Ix Lx a ng TERS zm UN 20 COZ 02 26 sonos a SYOLLAYYALNI 92 5 nm T ya O Woo YNALVLAWWOO 206 gt NAYS o OONVI8 6 YOLOW vl LOC t SSEM LNNOD MS ANOO 3QH3A 34431 m m IN NOS AS Vo orou w N V 39831 OONVIg HOSN3S VN3QVO HOLOIN 05504 quo 4 SSI3M 3HO1VIHOdSNVHL E Q G gt O QOH OLNNIW ello T CC c9 6S SAC ALNNIW gt 4 a oH ONNLHOIOASONNUAILSNP gt gt v e1s 619 866688 oun sinalow 9 68757 YNALOW SWIOZY 9 09 Sa s samai m e s 20 m m m 2 24 YOLOW ANOO 2 IQ SYOLVTLLNAA 9 2 2 m 08 LO OdOULSICILNY AV1dSIa 8 2 8 5 m Oma CELL 5 VOSHOS qaads El MO31VTLIN3A 6 NS 28 COL AVGIOOTSA 1041NO9 sve aad WLIDOTSA ynad HOQVLHOdSNVMH L 0 10 1 9 HOGVILLN3A YOLOW N O
15. 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 amp Operation Manual English 6 1 59476 Installation amp Operation Manual French 5S 6 4 1 3 2 PARTS LIST FOR SERIES PS520 ELECTRIC OVEN INSTALLATION KIT Triple Stack Ovens P N 54593 Item NO QTY PART NO DESCHIPTION 1 2 48392 Insulation Bottom Tray 2 1 48394 Bottom Tray Weldment 3 1 48396 Top cover 4 4 51387 Screw MSSLT Thread 8 32 x 1 2 18 8 5 4 M3828 Pin Alignment 6 1 52358 Installation amp Operation Manual English 6 1 59476 Installation amp Operation Manual French 4 f SECTION 2 INSTALLATION Figure 2 5 MODEL PS520 SINGLE OVEN DIMENSIONS 2 70 ELECTRICAL INLET 77771 Middleby 17 10 774 Marshall OVERALL 1 21 72 TO 1 1 K E 15 40 1 11 72 CONVEYOR ADJUSTABLE LEG 5 82 11 82 EXTENTION EXTENTION 0 sl a 18 75 CONVEYOR BACK VIEW The Opening Height is Adjustable from 2 1 4 inch minimum to 3 3 4 inch maximum in 1 2 inch increments BOTTOM VIEW 21 77 38 81 TO CENTER with STANDOFFS 26 75 FRONT LEGS 17 50 TO CENTER 42 24 OVERALL Figure 2 6 MODEL PS520 DOUBLE OVEN DIMENSIONS 37 27 32 64 27 27 OVERALL CONVEYOR 11 72 CONVEYOR ADJUSTABLE LEG 2 70 ELECTRICAL NLET
16. OINSINVINSWS 88502 5 89 L Z 5 m 5 O gl o LLI nm 130 CORo L OL 7 SYOLVWHOASNVEL 5259 0 1 0 6 SOLVINHOJSNVHL 27 DM orog 64 c LLL YNALWWHOISNVYL a Rm 9ssou VAO0Z 2 2 H 9 Low SEA 0L oe 89108 ZH 09 0 OF 2 anual quo Lune 6 v pp 6 8 OONVIB 9 LH v8 ex 22 SSI3M HOLOW Wv AVION 5 YOLdNYYILNI NV 18 91 gt a la IHA N 3 oe 16 Snide VIOLNSA VTT3Q JYOLNYYILNI gt 99 HOLOW ee YOLOW ANO9 9d TE YNILVIILNIA YNALVLAWWOO HOLIMS gt qu qe E LS gt osoan X 96858 ER vezao IX rz ZIVIS osson oun ZOZ ZOZ 92296 sonos iiie 92 ddddu sagan WOS ma 2 m m Qf mm oonvia YNALVLAWWOO 0 gt Nal lt ooz 88 ES O 1Nn09 MS ANOO YOLOW 7 9m m
17. 772 A L WEZ Ail Figure 2 11 Junction Connection Box SECTION 3 OPERATION SECTION 3 OPERATION Heat Switch Blower Switch Temperature Controller CONTROL FUNCTIONS M Yi A BNM Z leby all Mida Mars WARNING gt o 6 QS o LU 86 Z 31 0 o gt C 7 C gt gt c 0 Oo O and lockout or tagout all electric power to the other oven control turned ON or I Turn OFF oven before attempting to clean or service the oven o O G 0 E O gt gt x E gt a i lt Figure 3 1 PS520 Series Oven Control Functions w 2 Speed Control SECTION 3 OPERATION 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 the 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 switch Current is always present B Blower Switch The blower switch has two positions The switch must be O
18. IJH JTIOYLNOASYIIMOIONIMHOSI9 340I ee TIU HOLOVINOO 3HOLOW 140 VIOLNAA WOO O O O ASSALIA 1571839 08 a cl Il SO3A3ANOO YNITOYLNOO INAWASSIGIONSIY rr Q HOA3ANOO 30 union YOLOW 0c LL lt 99 Lt Yol 901 m 100 eo SO Z LON L WOO L ON L WOO LON WOO LOL T e 1 lt l N O YOLNNASIC 9 v ZOL 9 Bi F OOI1VWOLnV 8 WOO WOO ON WOO SUSLTVHOSNNAUL oqv1 oavi r MEAM YNALONOPsid SAIVNINYSL 300018 lt 2890 VULSINIS Id VULSINIS IG JHOIYALSOd VULSINIS IQ WIS Id VULSINIS Id a 10 FIdIONIYd 3 3102 ALIAS 31I3S IANI 3113 3 138 IANT ONVH 1421 3Honvo 3100 3HOnv 2109 3102 3102 3TvdlONIHd 51 251 151 NIV 34 NOTES 35 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 NOTICE During the warranty period ALL parts r
19. Remove air fingers NOTE Some oven users require a custom finger arrangement where the quantity of air fingers may vary You can remove the top and bottom fingers and blank plates from each or either end It is highly recommended that each finger be marked before removing so it is placed in exactly the same position when reassembled refer to step 1 Remove the air fingers pull the finger at the back side pull straight out 20 Figure 4 9 4 With air fingers out place them in an upright position to remove the outer plate 5 Gently step on the lip of the finger and pull the outer plate off 472 Figure 4 10 SECTION 4 MAINTENANCE 6 To remove the inner plate pull the plate out and C Reassembly of Air Fingers then up 1 Air fingers are made up of one inner plate one outer plate and the finger housing manifold Be sure to match up the markings T1 T2 T3 etc on all parts of f 4 the air fingers you are reassembling 2x 2 Figure 4 11 7 The outer finger plate is stainless steel and may 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 14 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
20. and drive chain tension Check that the set temperature and bake time settings are correct IF THESE STEPS FAIL TO RESOLVE THE PROBLEM CONTACT YOUR LOCAL MIDDLEBY MARSHALL AUTHORIZED SERVICE AGENT A SERVICE AGENCY DIRECTORY IS SUPPLIED WITH YOUR OVEN 15 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 turned on WARNING Before performing any maintenance work or cleaning turn main power switch off CAUTION When cleaning do not use any abrasive cleaning materials or water spray wipe clean only Never use a water hose or pressurized steam cleaning equipment when cleaning this oven NOTICE If the oven is to be removed from it s installed location for servicing 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 main circuit breakers and disconnect connector from oven Move oven to desired location for servicing When servicing is complete move oven to original location Adjust legs to level oven Connect electrical connectors to oven Turn on main circuit breaker Follow normal start up instructions 16 I MAINTENANCE
21. and pushing down Keep your fingers clear so you won t pinch them 2 gt 56 009 mod 10 Figure 4 15 Figure 4 13 Standard Upper Finger 21 SECTION 4 MAINTENANCE 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 the groove which will prevent inserting the finger in the groove if the outer plate is moved away from the flange of the finger Figure 4 16 Extended Lip Flange of Finger Manifold gt 5 Plate Figure 4 17 22 SECTION 4 MAINTENANCE 5 Install fingers and blank plates correctly with edges interlocked and no space between edges Correct Top Finger Edges Overlap Completely 9 o Outer Plate Finger Located Groove Blank Plate 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 Z 777 2 7 Figure 4 19 23 SECTION 4 MAINTENANCE E Conveyor Reassembly Into Oven 1 Lift conveyor and position it in th
22. control cabinet door by removing the three screws from the control cabinet door Tighten all electrical control terminal screws as shown in Figure 4 35 Figure 4 35 B Ventilation Check that the air circulation throughout the oven is not blocked and is working properly IV MAINTENANCE EVERY 6 MONTHS A Check brushes on D C conveyor motor When worn to less then 1 10 2 4mm replace the brushes B Check your venting system IMPORTANT NOTICES Installation of replacement parts requiring access to the interior of the oven is permitted only by an authorized service technician e f there are any problems with the operation of the oven the authorized service technician must be called e 1 is suggested to obtain a service contract with a manufacturer s authorized service technician 27 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 51958 Heater Element 380V 1 6 51961 Heater Element 480V 1 7 57408 Contactor 65 amp 3 pole 1 28 SECTION 5 TROUBLESHOOTING SECTION 5 TROUBLESHOOTING PROBLEM PRODUCTS ARE OVERCOOKED OR UNDERCOOKED Check for correct setting on temperature controller Check f
23. for operation CAUTION It is recommended that the oven be placed under a ventilation hood for adequate air supply and ventilation CAUTION Do not obstruct the flow of ventilation air to and from your oven Do not obstruct the fan holes in the rear of the unit CAUTION On ovens with the Machinery Drive Compartment located at the RIGHT end a minimum clearance of 0 to a left side wall 18 to a right side wall and 6 from a back wall to air openings at the rear of the oven must be maintained For servicing and cleaning a minimum of 18 clearance from all walls is recommended I UNLOADING Your Middleby Marshall PS520 Series Oven is shipped partially assembled It will arrive in a carton on a Crate Carton size for a PS520 Series Oven is 44 1 4 112mm Long x 37 1 2 953mm Wide x 23 584mm High x The crate and carton MUST be examined before signing the Bill of Lading Report any visible damage to the transport company and check for the proper number of crates If apparent damage is found make arrangements to file a claim against the carrier Surface Interstate Commerce Regulations U S A require that the claim must be initiated by the con signee within 10 days from the date that the shipment is received 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
24. to Step C 5 Turn the HEAT switch see Figure 3 6 to the ON or I position This completes a circuit to supply electric power to the electric heating system 6 Oven will reach baking temperature of 500 F 232 C in approximately 20 minutes Allow the oven to cycle for 30 minutes after it has reached desired baking temperature The oven is now for baking POWER FAILURE In case of power failure turn off all switches and remove product After power has been reestablished follow normal start up procedure B Shutdown Procedure 1 Turn the BLOWER and HEAT switches to OFF or NOTE The blowers will remain on until the oven temperature cools down to 200 F 939C at which time they will stop automatically 2 Make certain that there are no products left on the conveyor inside the oven Turn the CONVEYOR switch to O Middleby 7728 Marshall SP Lock ACTUAL TEMP D OVER Figure 3 6 Control Panel SECTION 3 OPERATION IV NORMAL OPERATION STEP BY STEP A Daily Start up Procedure Wait for the oven to heat to the setpoint temperature Higher setpoint temperatures will require a longer wait The oven cavity can reach a temperature of 500 F 232 C 1 Check that the circuit breaker fused disconnect is in the on in approximately 15 minutes position E Em ia LOCUS Optional Press the I
25. 1 Ph 21 8 Amp draw 50 60 Hz 208 240V control circuit and main blower motor 2 pole 3 wire system per oven 2 hot 1 grd e400V elements 1 Ph 23 0 Amp draw 50 60 Hz 208 240V control circuit and main blower motor 2 pole 3 wire system per oven 2 hot 1 grd e380V elements 3 Ph 21 8 21 8 1 2 Amp draw 50 60 Hz 5 pole 4 wire system per oven 3 hot 1 neut 1 grd e400V elements 3 Ph 23 0 23 0 1 2 Amp draw 50 60 Hz 5 pole 4 wire system per oven 3 hot 1 neut 1 grd Do NOT use conduit for ground 610mm Suggested dimensions are shown utility code requirements factors shown Figure 2 9 Typical PS520 Series Oven s Installation ELECTRICAL RATING 7 6 9 2 kW hr SUPPLY WIRING Supply wire size must be in accordance with the National Electrical Code current edition and must be in compliance with local codes SUGGESTED If space permits service should be located near the control console end of the oven s to allow convenient access to safety switches CAUTION UNIT MUST HAVE AIR VENT PLATES INSTALLED OR WARRANTY WILL BE VOID Il VENTILATION A mechanically driven ventilation system is required for the 5520 Series Middleby Marshall conveyorized electric ovens Local codes and condit
26. 27170 0244 Case of Quarts 6 27170 0246 Case of Gallons 4 A Removing Conveyor From Oven For Cleaning 1 Remove entry and exit trays 2 Loosen do not remove two screws on housing guard 3 Remove motor housing guard 4 Lift conveyor and remove chain Removable Air Fingers inside baking chamber Temperature Controller Conveyor Speed Control Conveyor Motor inside Motor Housing Guard Removable Crumb Pan Removable Conveyor Assembly 77 4 Blower and Cooling Fan Motor Middleby Marshall Adjustable Eyebrow Legs Figure 4 3 SECTION 4 MAINTENANCE 5 Lift other side of conveyor and push toward other side 6 Remove conveyor as shown Figure 4 6 Figure 4 4 ALLONS Figure 4 7 Figure 4 5 CAUTION Be careful no to bump the drive sprocket while handling the conveyor to avoid damaging the drive shaft 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 front of the oven The marks for an upper oven should be preceded with a U example UB1 UT2 etc Standard Fingers 2 Slide blank plates straight out Figure 4 8 3
27. 60 Hz Amperage Poles Draw See Below Heater Amperage Voltage kW Amp 208 8 3 39 9 230 7 6 33 0 240 8 3 34 6 See Below Heater Amperage Voltage kW Amp 380 8 3 21 8 See Below Heater Amperage Voltage kW Amp 480 8 3 17 3 See Below Heater Amperage Voltage kW Amp 380 8 3 21 8 400 8 3 23 0 See Below Heater Amperage Voltage kW L1 l2 L3 N 380 83 21 8 21 8 1 2 1 2 400 9 2 23 0 23 0 1 2 1 2 oven at the bottom of the control panel 2 Pole 3 Pole 3 Pole 2 Pole 4 Pole Wires 3 Wire 2 hot 1 grd 4 Wire 2 hot 1 neut 1 grd 4 Wire 2 hot 1 neut 1 grd 3 Wire 2 hot 1 grd 5 Wire 3 hot 1 neut 1 grd This Manual Must Be Kept For Future Reference 2 I 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 10 minutes this is the time that a product can take to pass trough the oven B Blower Fan The blower fans are located at the rear of the oven These blowers force heated air through the air fingers The BLOWER switch must be set to ON or I for oven warm up and baking C Electric Heaters There is one heater element mounted on the inside of the rear panel The element is connected to a
28. BLEM OVEN DOES NOT TURN ON WHEN ITS SWITCHES ARE TURNED ON Check that all electric supply switches are set to the ON or I position Then start the oven If oven still will not start contact your Middleby Marshall Service Agency L 09 0S L 9r SECTION 6 1 OL 89 H31IMS LV3H eL E LL 82 VA00Z AOZ AHV NO23S m IE ZH 09 06 Q Q AORZ OYZ 7 29 85 85 LE 3110411 02 2 55 a p 3uni vidua Eom ds gt 7 6l 9 EOZ a 5 0 gt g X MS ANOD 42 92 92 7 YO LOW d Did er S gt YO LOW ANOJ 6S SONILL3S H21IMS did gr gt EL LS O XITIOYLNOD R 9NI1002 MOA3ANO2 MOL V LNO2 YOLOW lt az u BO LU WOD ON L WOD ON L WOD T 4 G E O 8 Z WOD 9 Z ON 2 7 Z ON ZO _ VE 28 lt H7 HY O S1 2 51 57 x O LLI LLI L NIVW 30 SECTION 6 ELECTRICAL SCHEMATICS L 09 08 A08r 0883 OL HILIMS LVSH
29. I MAINTENANCE EVERY MONTHS 27 A Electrical Terminals 27 27 IV MAINTENANCE EVERY 6 MONTHS 27 Key Spare Parts Kits 28 SECTION 5 TROUBLESHOOTING CHARTS Trouble Shooting Charts 29 SECTION 6 ELECTRICAL SCHEMATIC Wiring Diagram E208 240V 50 60 Hz 1Ph 30 Wiring Diagram E380 480V 50 60 Hz 1 Ph 31 Wiring Diagram E230 240V CE 32 Wiring Diagram E380 400V CE 1Ph 33 Wiring Diagram E380 400V CE SPh 34 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 base pad with legs A double oven Figure 1 2 consists of two stacked single ovens A triple oven Figure 1 3 consists of three stacked single ovens The lower oven is mounted on a base pad On a double or triple oven the ovens operate indepen dently All ovens use identical controls and compo nents One oven can be cleaned or serviced while the others are operating
30. N or l for the main blowers to come on and permit the oven to run The fan circulates the air throughout the oven and must stay on during baking and during the cool down cycle above 200 F 93 C to prevent blower bearing damage To protect the blower motor and bearings a thermostatic override is built into the oven Temperature Controller Conveyor Speed Digital Control Conveyor Speed Control Module If the temperature of the oven is over 200 F 93 C the main blower will continue to run after the blower switch is turned to the OFF or O position C Heat Switch Turning the HEAT switch to ON or I will energize the electric heating system This switch is in series with the blower fan motor and high temperature override switch Both switches must be closed before the heating elements can be energized D Temperature Controller The temperature controller is a solid state PID type to maintain the operator set temperature The temperature controller continuously monitors the oven temperature and turns on the modulating solid state relay controller The heat is on for the time required to maintain a consistent oven temperature The temperature controller contains a low limit switch which allows the oven to cool down to 200 F 93 C before shutting off the blower A high limit indication ALM1 will appear on the display if the oven reaches 650 F 343 C Door Safety Switch
31. SIGIO I3l lt lt S207 Sl ZI mom gt OC LL Go YOLOW AIMO Y E 5 m L 2 2 gt gt QM 180 i ON L WOO ON L WOO ON L WOOD X S LOL O 9 p 8 Z ON Z WOO Z ON Z WOO Z ON Z WOO odvi oausinezi oavi lt ve 289 VASINIS IQ 3135 IANN 15 4 VULSINIS Id Id VULSINIS IQ 2102 3199 N3INIH 31135 IANN 31135 3119 IANT aval ze E SECTION 6 32 NIVIA SECTION 6 39 Loops L cl O OL 1 n O OLNAW31S 99 GZ 1N3W313 cl V1 O 355 791 Z 89 Odi O Q 64 9 quo f Odil 3133 v 1 1 SSIV 133 1 L1 97 AdAL 31d0030WH3HL LOVLNOS AV 133 m z 2 2 m m 55965 Op 2
32. T SS IN Figure 4 23 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 Master Links Figure 4 24 2 Using long nose pliers unhook master links at left end of conveyor as shown in Figure 4 25 Figure 4 25 3 Remove the outside master links on the right and left sides of the conveyor belt as shown in Figure 4 26 Figure 4 26 SECTION 4 MAINTENANCE 4 Unhook the link to be removed 5 Pull up on the link section and remove Do not discard the link removed as it may be used for making spare master links NOT If a section of the conveyor is being replaced it should be done now Remove links that replacing and use the section of conveyor belt furnished in the installation kit to replace them Figure 4 27 NOTE Before connecting the inside master links notice that these links have a correct position Figure 4 28 The link at the right is in the correct horns up position for inserting into the conveyor belt The horns facing down are in the incorrect position Correct P di Position z Incorrect Position Figure 4 28 25 SECTION 4 MAINTENANCE H Attaching Drive Chain 6 Reconnecting the inside master links Figure 4 29 1 If drive sprocket assembly was removed reassemble it onto t
33. ctory whichever 15 earlier provided that terms of payment have been fully met labor shall be performed during regular working hours Overtime premium will be charged to the Buyer This warranty is not valid unless equipment is installed started and dem onstrated under the supervision of a factory authorized installer Normal maintenance functions including lubrication adjustment of air flow thermostats door mechanisms microswitches burners and pilot burners and replacement of light bulbs fuses and indicating lights are not covered by warranty Any repairs or replacements of defective parts shall be performed by Seller s authorized service personnel Seller shall not be responsible for any costs incurred if the work is performed by other than Seller s autho rized service personnel When returning any part under warranty the part must be intact and com plete without evidence of misuse or abuse freight prepaid Seller shall not be liable for consequential damages of any kind which occur during the course of installation of equipment or which result from the use or misuse by Buyer its employees or others of the equipment supplied hereunder and Buyer s sole and exclusive remedy against Seller for any breach of the forgoing warranty or otherwise shall be for the repair or replacement of the equipment or parts thereof affected by such breach The foregoing warranty shall be valid and binding upon Seller if and only if Buy
34. d of baking chamber END OF TIMING 11 SECTION 3 OPERATION WARNING OVEN MUST BE KEPT CLEAR OF COMBUSTIBLES AT ALL TIMES lll 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 during the cooking or baking process 2 Check to see if the cooling fans see Figure 4 1 page 13 are operating when the blower switch see Figure 3 6 is turned ON or I The cooling fans cool the control components and blower motor The cooling fans located at the rear of the oven blows air into and through the cabinet Air is exhausted through the front of the cabinet and also out the front of the oven Refer to Daily Maintenance Section for fan intake checking procedure IMPORTANT NOTICE The cooling fan operates when the BLOWER switch is turned ON or l It must operate to keep the control console below 1409 609C 3 Turn the CONVEYOR switch see Figure 3 6 to the ON or I position This starts the conveyor belt moving through the oven Set the conveyer speed for the desired baking time Refer to the following Procedures E F and G TEMPERATURE 12 4 Set the temperature controller to the desired baking temperature NOTE For complete temperature controller operation instructions refer
35. e 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 AMIENS 2 Reinstall the conveyor extension Conveyor Extension Figure 4 22 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 the conveyor and check tension by lifting the conveyor belt at the center of the oven chamber opening see Figure 4 23 The belt should not lift higher then 1 to 2 75mm to 102mm 2 If conveyor belt is still not under proper tension entire link must be removed Use the following procedure H Conveyor Belt Link Removal to remove a link If conveyor belt is under proper tension proceed directly to J Attaching Drive Chain 3 Newer model PS520 Series ovens have adjustment screws at the end to tighten the conveyor belt If these adjustment screws are at their limit and belt tension is still not correct loosen the adjustment screws proceed to H Conveyor Belt Link Removal to shorten the belt and then return to F Checking Conveyor Belt Tension for proper adjustment If belt is tensioned properly proceed directly to J Attaching Drive Chain SS WSs owes SEES _ LOY WSS
36. ents Copper is the recommended material for the electrical supply conductors IV ELECTRIC SUPPLY FOR ELECTRICALLY HEATED OVENS Power requirements for electrically heated ovens are usually 208 240VAC 1 phase 3 wire 2 hot 1 ground although ovens built for export can have power requirements of 380VAC and 480VAC These ovens have a 4 wire or 5 wire system A 1 5 38mm diameter cutout hole in the back of the machinery compartment provides access for the electrical supply connections on 380V and 480V units 208V and 240V units have a cord and plug Using flexible cable s for the electrical power supply conductors requires 2 51mm strain relief fitting not furnished to enable safe access to the terminal block from which oven power is distributed The supply conductors must be of the size and material copper recommended to provide the current require refer to the data plate for the ampere specifications Typical specifications for each PS520 Series Oven 208 240V 1 phase 3 wire 8 3kW this oven requires 50 ampere service A PS520 Series Double Oven Figure 1 2 installation would require two 50 ampere service connections one for each oven the 8 3kW power consumption also doubles for such an installation to 16 6kW The 208V 230V or 240V AC electrically heated oven uses two legs of the supplied power to provide 208V 230V or 240V AC power for the oven control circuitry ELECTRICAL INLET li
37. eplacement and servicing should be performed by your Middleby Marshall Authorized Service Agent Service that is performed by parties other than your Middleby Marshall Authorized Service Agent may void your warranty NOTICE Using any parts other than genuine Middleby Marshall factory manufactured parts relieves the manufacturer of all warranty and liabilities NOTICE Middleby Marshall reserves the right to change specifications at any time Commercial Food Equipment Service Association Middleby is proud to support the Commercial Food Equipment Service Association CFESA We recognize and applaud ongoing efforts to improve the quality of technical service in the industry Middleby Cooking Systems Group 1400 Toastmaster Drive Elgin IL 60120 USA 847 741 3300 FAX 847 741 4406 www middleby com V Middleby 7272458 Marshall HE MIDDLEBY CORPORATION
38. er loads operates and maintains the equipment supplied hereunder in accordance with the instruction manual provided to Buyer Seller does not guarantee the process of manufacture by Buyer or the quality of prod uct to be produced by the equipment supplied hereunder and Seller shall not be liable for any prospective or lost profits of Buyer THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES WHATSO EVER SPECIFICALLY THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PUR POSE The foregoing shall be Seller s sole and exclusive obligation and Buyer s sole and exclusive remedy for any action whether in breach of contract or negligence In no event shall Seller be liable for a sum in excess of the purchase price of the item The Middleby Marshall logo is a registered trademark of Middleby Marshall A Middleby Company Middleby Marshall Inc 1400 Toastmaster Drive Elgin Illinois 60120 9272 847 741 3300 Fax 847 741 4406 Table of Contents SECTION 1 DESCRIPTION MODEL IDENTIFICATION 1 Series PS520 Electrical Specifications 2 I COMPONENT FUNCTION 3 A Conveyor Motor and Conveyor 3 C Electric Heaters 3 D
39. he 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 QO SCrew 2 Lift conveyor and install drive chain to conveyor drive sprocket and motor sprocket 5 OQ 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 x QS lt TE SENSN BIOS Figure 4 32 S M 9 OK x 3 The angle plate located underside of the conveyor must be against the lower end plug This is true on both sides of the oven Figure 4 30 7 Reconnect the outside master links 8 Replace all parts removed from the oven Crumb Pan Mounting Bracket C Lower Plug Figure 4 33 Figure 4 31 26 4 Reattach conveyor guard to control panel and secure two screws Install both upper end plugs Figure 4 34 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 SECTION 4 MAINTENANCE A Electrical Terminals Open the
40. he 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 O 7724 Middleby O A Marshall _________ ________ vac jw H ____ 5 ____ PHASE _ WIRE SERVICE MOTORVOLTS ADDITIONAL AwPS TOTAL LOAD VOLTS 5 PS5XX DO NOT INSTALL CLOSER THAN L INCHES TO A NON COMBUSTABLE BACK WALL AND L INCHES TO NONCOMBUSTIBLE SIDE WALLS ONLY PS2XX FOR INSTALLATION ON COMBUSTIBLE FLOORS ADJECENT TO COMBUSTIBLE WALLS WITH THE FOLLOWING MINIMUM CLEARENCES L INCHES RIGHT SIDE WALL CL INCHES TO LEFT SIDE WALL INCHES TO BACK WALL N INSTALLEZ PAS MOINS DELLI PO D UN PANNEAU ARRIERE INCOMBUSTIBLE ET DE PANNEAUX LAT RAUX INCOMBUSTIBLES UNIQUEMENT DESTIN A UN USAGE AUTRE QUE DOMESTIQUE INTENDED FOR OTHER THAN HOUSEHOLD USE O 44957 REV D ELGIN ILLINOIS 60120 U S A Figure 2 10 Typical Electric Oven Data Plate A fused disconnect switch or a main circuit breaker customer supplied MUST be installed in the electric supply line for each oven it is recommended that this switch circuit breaker have lockout tagout capability The electric supply connection must meet all national and local electrical code requirem
41. in the oven or conveyor belt or drive chain tension may be incorrect Controls may be set incor rectly SECTION 3 OPERATION SOLUTION 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 correct the cause of the condition to prevent damage to the oven Check that the circuit breaker fused disconnect is turned on Check that the BLOWER Switch is in the ON I position the HEAT 3 amp 4 BLOWER lt and CONVEYOR switches to the OFF or O position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the daily procedure Check that the Set Point is correctly set Check that both BLOWER and HEAT switches are in the ON or I position Wait for AT LEAST FIVE MINUTES before restarting the oven Repeat the Daily Start up procedure Check that the Set Point is above 200 93 Turn the oven to the OFF or O position and allow to cool Disconnect electrical power to the oven Refer to Section 4 Maintenance for instructions on reassembling the air fingers Turn the oven to the OFF or O position and allow to cool Disconnect electrical power to the oven Check if the conveyor is blocked by an object inside the oven Refer to Section 4 Maintenance for instructions on checking the conveyor
42. ions vary greatly from one area to another and must be complied with Following are the suggested requirements for good ventilation Please remember these are recommendations or guidelines you may have a special condition or problem that will require the services of a ventilation engineer or specialist Proper ventilation is the oven owner s responsibility Improper ventilation can inhibit oven performance Please Note There are now two stand off channels that must be installed in the field See Section 1 Figure 1 4 page 3 for reference SECTION 2 INSTALLATION These C Channel brackets are installed in the vertical plane using existing screws to support these 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 side of the oven by keeping the oven away from the rear wall II ELECTRICAL CONNECTION INFORMATION FOR PS520 SERIES OVENS WARNING Authorized supplier personnel normally accomplish the connection for the ventilation system electric supply as arranged by the customer Following these connections the factory authorized installer can perform the initial start up of the oven Check the oven data plate Figure 2 10 before making any electric supply connections Electric supply connections must agree with data on the oven data plate NOTE T
43. n electrical control which is energized by the temperature controller D Cooling Fan See Figure 1 4 The cooling fan is located in the back of the oven The cooling fan draws air through its grille blowing it through the blower motor compartment and the control compartments into the oven top and exhausted out the front louvers E Air Fingers and Blank Plates See Figure 4 8 4 14 E1 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 air jets It must be assembled into the manifold with it s holes aligned with the holes of the outer plate 3 Manifold the Manifold is the assembly which slides on the tracks into the oven plenum SECTION 1 DESCRIPTION Blower Motor Stand off Cooling Fan Figure 1 4 Blower Assembly Conveyor Drive Motor Left Control Box Figure 1 5 Machinery Compartment Components 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 or ANSI NFPA70 NOTE There must be adequate clearance between the oven and any adjacent combustible construction Clearance must also provide for servicing and
44. nufactured parts relieves the manufacturer of all warranty and liability NOTICE Middleby Marshall Manufacturer reserves the right to change specifications at any time KEEP THIS MANUAL IN A VISIBLE LOCATION NEAR THE OVEN FOR FUTURE REFERENCE Model MIDDLEBY MARSHALL No Quibble Limited Warranty U S A Only Middelby Marshall Hereinafter referred to as The Seller warrants equipment manufactures by it to be free from defects in materials and workmanship for which it is responsible The seller s obligation under thus warranty shall be limited to replacing or repairing at seller s option without charge any part found to be defective and any labor and material expense incurred by seller in repairing or replacing such part Such warranty shall be limited to the original purchase of 1 one year from date of original installation or 18 months from date of purchase whichever is earlier provided that terms of payment have been fully met This warranty 15 valid only if the equipment is installed started and demonstrated under the supervision of a factory authorized installer Normal maintenance functions including lubrication cleaning or customer abuse are not covered by this no quibble warranty Seller shall be responsible only for repairs or replacements of defective parts performed by Seller s authorized service personnel Authorized service agencies are located in principal cities throughout the contiguo
45. or correct setting of conveyor speed control Turn temperature control to correct setting Set the conveyor speed control at correct setting Verify the food preparation process If products still cook incorrectly call your Middleby Marshall Service Agency PROBLEM OVEN DOES NOT HEAT Check to see if both BLOWER switch and HEAT switch are in the ON or I position If oven does not heat call your Middleby Marshall Service Agency PROBLEM BLOWER MOTOR IS RUNNING YET LITTLE OR NO AIR BLOWS FROM AIR FINGERS Air fingers reassembled incorrectly after cleaning Assemble air fingers correctly after cleaning Refer to Section 4 procedure or call your Middleby Marshall Service Agency 29 PROBLEM OVEN BLOWER AND CONVEYOR OPERATE YET THE OVEN IS NOT HEATING Reset the temperature controller to a new Setting above 200 F after turning the BLOWER switch to off for 30 seconds Start the oven again If the oven still does not heat call your Middleby Marshall Service Agency PROBLEM CONVEYOR WILL NOT HOLD PROPER SPEED OR WILL NOT RUN AT ALL Check whether the conveyor is jammed on something in the oven Check for proper tension of conveyor drive chain and conveyor belt Refer to Section 4 for correct procedure Check that the conveyor drive sprocket is tight If conveyor still does not run correctly contact your Middleby Marshall Service Agency PRO
46. quo Odil Z y ViddOOOWRALTTHNIONASHL 1OVINOO AV132l Q f 31dOO3ONl3H1 OO LL 88888 Sl gz 89 r Z gt m 92505 O OIN3IAVIN3IVO EEEF YL o g Ms Og Bem d pa Lim EOM 13d gt el 91 81 ads 6 zl eLIVHOSSONDZISH 32OIVIW2IO3SNV2II EM To HOLMS 1V3H 2 A S UNALWAUOASNVAL gt m 5 05808 79 L 109 202 OL AOZ L ARINQINOO3S L n JONON ENNEN ZH 09 08 0 aI 9 gt la Quo AO8Z OVZ P 9 gt n LINX 82 6 ct OONVIE e v9 eX LE SSI3AA 9 me em dem Jes Wav gt le 14 9y Odvd1OdS OIVTIIN3A UOLdNRILNI IMM O V IOIN3A VTI3O Noirs LOC 002 Ould OOLWNOLNY NALIN InalvIniNWOO ZOZ TACSOLINOUIO HOLMS AIMO 19 OGMNOISIGIINV S OLIOIWIAOHLSH3 IG 22 YOLOW r x in 101 OUl YOLOW ANOD Od fou Qe s No NNUS 108 a 4 YOAVINOdSNVUL COG wwe PL gt Quo col del E O Woo
47. ring Conveyor Speed 11 II STEP BY STEP OPERATION 12 A Start up Procedures 12 Daily Start Up C 12 moi 12 B Shutdown Procedure 12 IV NORMAL OPERATION STEP BY STEP 13 A Daily Start up Procedure 13 B Daily Shutdown Procedure 13 V QUICK REFERENCE TROUBLESHOOTING 15 Table of Contents continued SECTION 4 MAINTENANCE MAINTENANCE DAILLY 16 17 B COGNO u u 17 C Conveyor Belt 17 u U u u 17 MAINTENANCE MONTHLY 18 A Removing Conveyor From Oven For Cleaning 18 B Air Fingers Disassembly For Cleaning 20 C Reassembly of Air Fingers 21 D Reinstall End IP u uu u u 23 E Conveyor Reassembly Into Oven 24 F Checking Conveyor Belt Tension 24 G Conveyor Belt Link 29 H Attaching Drive Chain 26 I
48. time Wait for the SET PT light to turn on 77774 Middleby GA Marshall Q HEAT ON OSET PT ACTUAL O sPLock OVER TEMP Press the Up Arrow N and Down Arrow Keys as necessary to adjust the set point 6 Turn the HEAT switch to the ON or p OFF ON position and wait for the HEAT ON light to turn CAUTION In case of power failure turn all switches to the OFF or position and remove the product After the power has been restored perform the normal start up procedure IF Vita Marshall THE OVEN WAS SWITCHED OFF FOR LESS THAN 5 FIVE MINUTES WAIT FOR AT LEAST 5 FIVE 5 wait MINUTES BEFORE RESTARTING THE OVEN O ovER TENP for XE HEAT 13 SECTION 3 OPERATION Display Shows the Set Point or the Actual Temperature SP LOCK in degrees Fahrenheit F Light or Celsius C Lights when the set point is locked out from changes This setting can only be changed by service personnel Middleby 48 Marshall OVERTEMP 9 Light Lights when the oven temperature is greater than 650 F 343 C Refer to Quick Reference Troubleshooting in this Temperature Key Press this key once to view the Actual Temperature in the Display 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 7 SET PT SP LOCK OVER TEMP
49. urn the BLOWER Temperature i key to VA pi show the Actual Tem or I position perature in the display and wait for the AC TUAL TEMP light to turn This allows you to 3 Turn the CONVEYOR CONVEYOR monitor the oven tem perature as it rises to the switch to the ON or E A setpoint position 9 Allow the oven to preheat for 10 minutes after it has reached the set point temperature 4 f necessary adjust the conveyor speed setting by pressing the or N B DAILY SHUTDOWN PROCEDURE MIN SEC pushbuttons on the con veyor speed controller to change the displayed bake time 1 Turn the HEAT and BLOWER switches to the OFF or 557 HEAT BLOWER O position Note the blowers will remain in 5 Adjust the temperature 1 AS Y 2 Make certain that there are no products left on the conveyor inside the oven Turn the CONVEYOR switch to the OFF or O position 3 After the oven has cooled and the blowers have turned off switch the circuit breakers fused disconnect to the OFF or O position 77724 Middleb controller to a desired set orsa operation until the oven temperature if neces has cooled to below sary 200 F 939C e Press the Set Point and Unlock keys at the same
50. us United States and Hawaii The warranty is valid in the 50 Unites States and is void elsewhere unless the product is purchased through Middleby International with warranty included The foregoing warranty is exclusive and in lieu of all other warranties expressed or implied There are no implied warranties of merchantability or fitness for a particular purpose The foregoing shall be Seller s sole and exclusive obligation and Buyer s sole and exclusive remedy for any action including breach of contract or negligence In no event shall Seller be liable for a sum in excess of the purchase price of the item Seller shall not be liable for any prospective or lost profits of Buyer This warranty is effective on Middleby Marshall equipment sold on or after February 15 1995 2006 Middleby Marshall A Middleby Company Serial No Installation Date MIDDLEBY MARSHALL INC OVEN LIMITED WARRANTY 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 replacing or repairing at Seller s option without charge F O B Seller s factory any part found to be defective and any labor and material expense incurred by Seller in repairing or replacing such part Such warranty is limited to a period of one year from date of original installation or 15 months from date of ship ment from Seller s fa
Download Pdf Manuals
Related Search