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FULL SIZE ELECTRIC CONVECTION OVENS - ELECTRICAL OPERATION

F25105 (December 2001)

Page 53 of 60

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Содержание 126743

Страница 1: ...Vulcan Service School for this product you should read in its entirety the repair procedure you wish to perform to determine if you have the necessary tools instruments and skills required to perform...

Страница 2: ...19 Temperature Probe Test Solid State Control 20 Heating Element Test 20 Blower Adjustment 21 Door Adjustment 22 Door Catch Roller Adjustment Independent Doors 22 Door Switch Adjustment 23 Door Chain...

Страница 3: ...Mechanical KX Control 208 240V 44 VC4ES VC6ES with Mechanical KX Control 480V 46 VC4ED VC6ED with Solid State Temperature Control 208 240V 48 VC4ED VC6ED with Solid State Temperature Control 480V 50 V...

Страница 4: ...aneous doors are optional with or w o window 2 Stainless steel doors w o window standard 3 Stainless steel doors with window standard 4 In February 2001 this model was discontinued INSTALLATION Refer...

Страница 5: ...20 NOTES 1 Amperage values in the table are nominal Tolerance is 5 10 2 Complied in accordance with National Electric Code ANSI NFPA 70 latest edition MODEL TOTAL POWER KW AMPERAGE 1 PHASE 60HZ PER L...

Страница 6: ...crews then remove the cover from the oven 2 Reverse the procedure to install Control Panel 1 Remove three 3 screws on the right side which secure the control panel then pull the panel away from the ov...

Страница 7: ...he left side panel out at the bottom then down to remove 4 Reverse the procedure to install CONTROL PANEL COMPONENTS WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLAC...

Страница 8: ...t the wire leads to the component being replaced 3 Remove the component 4 Reverse the procedure to install the replacement component and check oven for proper operation TEMPERATURE PROBE SOLID STATE C...

Страница 9: ...s manufactured prior to this date have 1 2 round holes that sometimes make it difficult to remove elements thru the cavity A serial number cut off will not be available Follow the procedures for eleme...

Страница 10: ...procedure below 1 Perform steps 1 thru 4 under FRONT ACCESS 2 If the element is on the left side A Remove the left side panel and pull back the insulation at the top to expose the element terminals B...

Страница 11: ...nting bolts and washers Hand tighten mounting bolts only 10 Reconnect lead wires at the motor replace conduit and junction box cover NOTE Check data plate on motor for wiring schematic The motor must...

Страница 12: ...of the door 3 Simultaneous doors A If replacing window on the left door remove the handle from the front of the door then remove door seal from the inside edge of the door 1 Lift out the inner door p...

Страница 13: ...etainer and top bearing C If replacing the bottom bearing remove it from the door shaft or the lower sill opening 8 Reverse procedure to install door assembly and check for proper adjustment as outlin...

Страница 14: ...arts are now accessible for inspection and or replacement if necessary 6 Reverse procedure to re assemble the door assembly parts and check for proper adjustment as outlined under DOOR CHAIN ADJUSTMEN...

Страница 15: ...G ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Take out racks from the oven 2 Remove the high limit thermostat cover mounting plate from inside the oven cavity at the top 3 Disconnect...

Страница 16: ...AND PANELS NOTE If right side panel is not accessible this component can be serviced by removing the control panel as outlined under COVERS AND PANELS 2 Disconnect the lead wires to the fan motor by...

Страница 17: ...0 F 1 If the differential is 20 F or less the temperature control circuit is functioning properly a Proceed to step 7 2 If the differential is more than 20 F a Check the temperature probe as outlined...

Страница 18: ...cycles 5 Record the temperature when the thermostat cycles OFF and ON for at least three complete cycles 6 Calculate the differential by subtracting the temperature indicated when heat lamp goes out...

Страница 19: ...eck for proper voltage across terminals 8 10 208 240VAC for power to the control A If correct proceed to step 7 B If incorrect problem is not with the temperature control See TROUBLESHOOTING 7 Check r...

Страница 20: ...077 380 656 260 3 016 400 529 280 2 266 425 424 300 1 726 450 334 320 1 332 475 266 340 1 041 Resistance in ohms 10 HEATING ELEMENT TEST WARNING THE FOLLOWING STEPS REQUIRE POWER TO BE APPLIED TO THE...

Страница 21: ...MOTOR in REMOVAL AND REPLACEMENT OF PARTS 2 Loosen the motor mounting bolts 3 Adjust the motor position until the blower is parallel to and 1 4 inch away from the motor mounting plate Check for squar...

Страница 22: ...EPENDENT DOORS WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Remove the top front cover as ou...

Страница 23: ...ease tension on the catch roller NOTE The amount of tension on the catch roller determines the opening force of the door 2 Continue adjustment until proper door operation is achieved DOOR SWITCH ADJUS...

Страница 24: ...ight during testing or the adjustment will not hold A If doors do not close properly repeat step 4 5 and 6 B If doors operate properly continue to step 7 7 Install the lower front cover COMPUTER CONTR...

Страница 25: ...power to the blower motor high or low fan speed terminals when the SSR is energized by the output voltage from the computer To test solid state relay SSR1 high fan speed the computer control should be...

Страница 26: ...ol is functioning properly 6 Enter the setup mode as outlined in SETUP MODE under COMPUTER CONTROL A Advance through the menu until CAL1 Calibration Offset appears 1 If the thermocouple reading is hig...

Страница 27: ...ops B Heating stops NOTE If the control was calling for heat when the calibration mode was entered heating will resume after exiting the test mode 3 Press the Rack 1 key to accept the default no under...

Страница 28: ...properly do not restore factory settings until verifying the control is configured properly as outlined in SETUP MODE under COMPUTER CONTROL and performing the COMPUTER CONTROL OPERATIONAL TEST as out...

Страница 29: ...removing power from the heating circuit Auto resets at 500 F Computer Control Monitors temperature sensor and regulates the oven cavity temperature by controlling 2CON to energize the heating elements...

Страница 30: ...board The probe is an RTD resistance temperature detector of the Thermistor type As temperature increases the resistance value decreases On oven models using the computer control the probe is a J typ...

Страница 31: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 31 of 60 VC4ES 6ES with Mechanical KX thermostat Plug Socket and Components...

Страница 32: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 32 of 60 VC4ED 6ED with Solid State Control Plug Socket and Components...

Страница 33: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 33 of 60 VC4EC 6EC Plug Socket and Components Cook Hold Standard...

Страница 34: ...thermostat until the doors are opened or the power switch S1 is turned to the OFF or COOL DOWN position VC4ED VC6ED with Solid State Temperature Control Schematic diagram 6534 will be used to explain...

Страница 35: ...reaches zero 2 Oven cavity light switch S3 wire 1 Turns cavity lights ON OFF does not affect Cool down cycle 4 The oven will remain in this condition until the power switch S1 is turned to the OFF or...

Страница 36: ...operate at Low speed throughout the Cook Hold cycle A The computer control 5VDC output from pins C2 2 and C2 8 is de activated and SSR1 relay is de energized 1 Power is removed from convection fan mot...

Страница 37: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 37 of 60 SCHEMATICS VC4ES VC6ES with Mechanical KX Controls 208 240V...

Страница 38: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 38 of 60 VC4ES VC6ES with Mechanical KX Controls 480V...

Страница 39: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 39 of 60 VC4ED VC6ED with Solid State Temperature Control 208 240V...

Страница 40: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 40 of 60 VC4ED VC6ED with Solid State Temperature Control 480V...

Страница 41: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 41 of 60 VC4EC VC6EC Computer Control 208 240V Roast Hold Standard...

Страница 42: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 42 of 60 VC4EC VC6EC Computer Control 480V Roast Hold Standard...

Страница 43: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 43 of 60 THIS PAGE PURPOSELY LEFT BLANK...

Страница 44: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 44 of 60 WIRING DIAGRAMS VC4ES VC6ES with Mechanical KX Control 208 240V...

Страница 45: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 45 of 60...

Страница 46: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 46 of 60 VC4ES VC6ES with Mechanical KX Control 480V...

Страница 47: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 47 of 60...

Страница 48: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 48 of 60 VC4ED VC6ED with Solid State Temperature Control 208 240V...

Страница 49: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 49 of 60...

Страница 50: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 50 of 60 VC4ED VC6ED with Solid State Temperature Control 480V...

Страница 51: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 51 of 60...

Страница 52: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 52 of 60 VC4EC VC6EC Computer Control 208 240V Roast Hold Standard...

Страница 53: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 53 of 60...

Страница 54: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 54 of 60 VC4EC VC6EC Computer Control 480V Roast Hold Standard...

Страница 55: ...FULL SIZE ELECTRIC CONVECTION OVENS ELECTRICAL OPERATION F25105 December 2001 Page 55 of 60...

Страница 56: ...Blower motor doesn t run in Cool Down but runs ok in ON position 1 Power switch S1 malfunction 2 Fan speed switch S3 malfunction 3 Interconnecting wiring malfunction Excessive or low heat in oven 1 Li...

Страница 57: ...tment or broken independent doors 4 Door seals damaged COMPUTER CONTROL MODELS ONLY SYMPTOM POSSIBLE CAUSES Oven does not heat 1 High limit switch open 2 Temperature probe malfunction 3 Computer contr...

Страница 58: ...AM checksum error Internal RAM malfunction Cycle power Er03 Ambient sensor error Ambient temperature is below 32 F Check ambient temperature at the control Er04 Configuration error Microprocessor malf...

Страница 59: ...FULL SIZE ELECTRIC CONVECTION OVENS TROUBLESHOOTING F25105 December 2001 Page 59 of 60 N O T E S...

Страница 60: ...lement 208 volt X X X 426635 2 Element 240 volt X X X 424940 2 Fan Cooling X X X FE 19 40 Fuse 15 amp X X X 346357 1 High Limit Thermostat X X X 821875 2 SST Relay 50amp X 340324 9 Switch 2sp Fan X X...

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