Vulcan-Hart VFBMW Скачать руководство пользователя страница 8 | Manualshive

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FLASHBAKE

®

/ MICROWAVE OVEN REMOVAL AND REPLACEMENT OF PARTS

Form 24694 (April 2001)

Page 8 of 52

3.

Remove two screws securing each side of
cover located underneath side of unit.

4.

Slide cover rearward to disengage cover from
front sides of unit.

5.

Carefully lift cover with vent grill off unit.

6.

Reverse procedure to install.

Back Panel

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 "MAIN COVER.”

2.

Remove "POWER CORD.”

3.

Remove screws securing back panel.

4.

Pull bottom of back panel away from unit to
disengage it from bottom panel.

5.

Reverse procedure to install.

Bottom panel

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 screws securing bottom panel.

2.

Disengage bottom panel from back panel and
remove bottom panel.

3.

Reverse procedure to install.

FRONT VENT GRILL

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 screw securing grill on top.

2.

Remove one screw on each side of grill.

3.

Pull grill out front.

4.

Reverse procedure to install.

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Содержание VFBMW

Страница 1: ... be all encompassing If you have not attended a 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 the procedure Procedures for which you do not have the necessary tools instruments and skills should be performed by a trained Vulcan Service Technician...

Страница 2: ... 12 Control Panel 12 Control Board 13 Keypad Assembly 14 Display 14 LED Display 14 Relay Board 14 Door Switch Assembly 15 Upper Lamp Housing and Duct Assembly 16 Upper Lamp Assembly 18 Upper Lamp Fan 19 Upper Lamp Housing Ducts 19 Right Duct 19 Left Duct 20 Cavity Thermistor 20 High Voltage Transformer 20 Magnetron 21 Magnetron Cooling Fan 22 Lower Lamp Housing and Duct Assembly 23 Lower Lamp Fan ...

Страница 3: ...gen Lamps 32 Radiation Leakage Test 32 ELECTRICAL OPERATION 33 Component Function 33 Component Location 34 TCO Locations Switch Locations 35 Control Board Layout 36 Control Board Connector Identification 36 Air Flow Diagrams 37 Combi Cook 37 Magnetron 38 Microwave 38 Component Wiring Diagrams 39 Thermal Cut Outs 39 Door Switches 40 Halogen Lamps 41 Schematic Diagram 42 Wiring Diagram 44 Sequence o...

Страница 4: ...his manual before the oven is released to the owner 5 A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner GENERAL INTRODUCTION General The combination FlashBake and microwave oven cooks the outside of foods much like conventional radiant heat while also penetrating the surface so the inside cooks simult...

Страница 5: ...evels greater than 7 all power levels lamps and microwave will be reduced by the control board to 7 for the remainder of the combi cook cycle The consumer will not notice any change in display readout however they may notice that the halogen lamps are cycling differently than expected In the unlikely event that internal oven cavity temperature exceeds 600 F combi cook operation will be terminated ...

Страница 6: ... the control board which controls the upper halogen lamps U the lower halogen lamp L as well as the high voltage magnetron circuits M operates on a duty cycle of 32 seconds This means the power level you select for each component controls the percentage of on time during each 32 second period of time Example Upper halogen lamp pair set at 80 U 08 lower halogen lamp set at 50 L 05 and microwave set...

Страница 7: ...agnetron area NOTE New type connectors are used on this oven Some have locking tabs that must be released by pressing in the appropriate place before connectors can be separated When installing connectors take extra care to ensure all tabs in gang connectors are properly aligned before connecting When installing connectors listen for click sound and stop If connector is seated on too far it may be...

Страница 8: ...screws securing back panel 4 Pull bottom of back panel away from unit to disengage it from bottom panel 5 Reverse procedure to install Bottom panel 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 screws securing bottom panel 2 Disengage bottom panel from back panel and remove bottom pane...

Страница 9: ...erse procedure to install VENT FAN CAPACITOR 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 MAIN COVER 2 Disconnect wires from capacitor 3 Remove screw securing capacitor 4 Reverse procedure to install VENT FAN WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT B...

Страница 10: ...ecuring assembly to top of magnetron NOTE Screws removed from magnetron are different 6 Disconnect motor connector and thermal fuse connector 7 Undo wire wrap and work wires out 8 Remove screw securing lamp socket NOTE Lamp and socket are replaced as one piece 9 If door is to be removed first remove motor and then remove screw securing bottom of door 10 Reverse procedure to install DAMPER HOUSING ...

Страница 11: ... following components and replace the ones found to be malfunctioning A Door primary interlock switch B Door secondary interlock switch C Door monitor switch NOTE During reassembly before installing main cover and after all necessary components are replaced and adjusted a radiation leak test MUST be performed in the magnetron area WARNING DUE TO HIGH VOLTAGE SPECIAL CARE SHOULD BE TAKEN WHEN MEASU...

Страница 12: ...ke cover B The latch can be removed by pushing it against spring tension to the end of its travel Then pry latch out of mounting holes and lift it up enough to be able to disconnect the spring C Remove door handle by removing screws securing it 4 Reverse procedure to install 5 Perform RADIATION LEAKAGE TEST CONTROL PANEL ASSEMBLY WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN C...

Страница 13: ...ward 6 Disconnect eight plugs from control board CAUTION When reassembling be certain all plugs are correctly mated If plug is colored connect it to same color connector on board Failure to connect correctly will result in damage to unit 7 Lift panel and work pivot arms out of holes and remove panel from unit Control Board 1 Remove CONTROL PANEL 2 Disconnect connectors going to display board LED b...

Страница 14: ...ng display board and remove board 3 Reverse procedure to install LED Display 1 Remove CONTROL BOARD 2 Remove DISPLAY 3 Remove two screws securing LED display assembly and remove assembly 4 Reverse procedure to install RELAY BOARD 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 MAIN COVER...

Страница 15: ...E A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Remove CONTROL PANEL 2 Identify and disconnect connectors from the three switches 3 Remove two screws securing assembly to unit 4 Carefully slide assembly up to disengage tabs and rotate assembly out of unit 5 Remove a switch by pressing appropriate tab to release switch CAUTION Flex tabs only enough to release switch Excessive ...

Страница 16: ...MBLY Parts that can be accessed when upper lamp housing and duct assembly is removed Cavity thermistor Thermal cut out located at top of magnetron Magnetron Upper lamp assembly Upper lamp fan assembly Damper door assembly Magnetron fan assembly Lower lamp fan assembly High voltage transformer WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT ...

Страница 17: ... fuse C Disconnect wires from high voltage capacitor D Work high voltage capacitor wires out of wire retainer on duct E Pass connector and wires down through hole 8 For Model FBMW3 A Disconnect wires from vent fan motor capacitor B Remove NOISE FILTER BOARD C Disconnect wires from high voltage capacitor D Work high voltage capacitor wires out of wire retainer on duct E Pass connector and wires dow...

Страница 18: ...E 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 UPPER LAMP HOUSING AND DUCT ASSEMBLY 2 Remove lamp housing by straightening two tabs on each side and then separating it from the duct assembly 3 Work lamp wires out of wire retainers and disconnect wires from thermal cut outs CAUTION Use clean dry cloth to han...

Страница 19: ...P HOUSING AND DUCT ASSEMBLY 2 Work wires out of wire retainer 3 Remove three screws and lift assembly out 4 Reverse procedure to install UPPER LAMP HOUSING DUCTS 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 Right Duct 1 Remove UPPER LAMP HOUSING AND DUCT ASSEMBLY 2 Remove two screws from under...

Страница 20: ...ERMISTOR 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 UPPER LAMP HOUSING AND DUCT ASSEMBLY 2 Remove two screws securing mounting bracket NOTE Wires may be inside cable wrap 3 Disconnect thermistor plug from control board 4 Reverse procedure to install HIGH VOLTAGE TRANSFORMER WARNING ...

Страница 21: ...ling main cover and after all necessary components are replaced and adjusted a radiation leak test MUST be performed WARNING DUE TO HIGH VOLTAGE SPECIAL CARE SHOULD BE TAKEN WHEN MEASURING AROUND THE MAGNETRON 1 Remove UPPER LAMP HOUSING AND DUCT ASSEMBLY 2 Remove MAGNETRON COOLING FAN 3 Remove two screws securing side panel to base and let it hang off to the side 4 Disconnect lead wires from magn...

Страница 22: ... in place and completely seated to prevent leakage MAGNETRON COOLING FAN 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 UPPER LAMP HOUSING AND DUCT ASSEMBLY 2 Remove two screws securing fan housing to side panel 3 Disconnect motor connector 4 Disconnect connector for lower lamp fan moto...

Страница 23: ... lamp life will be shortened Clean cold lamps with a cloth moistened with alcohol cleaner to remove skin oil or other residue 1 Remove BOTTOM PANEL 2 Disconnect lamp wiring connector 3 Remove four screws securing assembly to machine 4 Carefully work out from under turntable motor 5 Disconnect wires from thermal disk 6 Reverse procedure to install LOWER LAMP FAN WARNING DISCONNECT THE ELECTRICAL PO...

Страница 24: ...ut with assembly or fall out when assembly is removed 5 During reassembly washer must be installed to prevent microwave energy leakage 6 Installation is easier if motor plate and ceramic shaft are assembled and then placed on oven 7 Reverse procedure to install THERMAL CUT OUTS Cavity Top Left NOTE This thermal cut out is nonresetable When replacing be sure to determine cause of failure WARNING DI...

Страница 25: ...he oven cavity under the duct must be kept clean for proper air circulation Upper Lamps 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 FRONT DISK 1 Remove MAIN COVER 2 Disconnect wires from disk 3 Bend tabs up enough to slide disk out 4 Reverse procedure to install REAR DISK 1 Remove VENT FAN 2 ...

Страница 26: ...k 5 Reverse procedure to install CAPACITOR High Voltage 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 NOTE During reassembly before installing main cover and after all necessary components are replaced and adjusted a radiation leak test MUST be performed in the magnetron area WARNING DUE TO HIG...

Страница 27: ...h an insulated handled screwdriver or insulated jumper wire 4 Remove screw securing wire lead from diode to the chassis 5 Remove diode from capacitor 6 Reverse procedure to install LOW VOLTAGE TRANSFORMER 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 CONTROL PANEL 2 Remove screw securi...

Страница 28: ...G ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED 1 Remove MAIN COVER 2 Remove screw securing inlet cover grill and lift grill out 3 Remove screw securing ground wire NOTE This screw has machine threads 4 Using a small flat bladed screwdriver press in on locking tab and lift up front edge of assembly and unhook back tab from base plate 5 Disconnect connectors from board 6 Reverse proce...

Страница 29: ...UTION Check the ground do not operate the oven on an extension cord This oven is designed to be used when grounded CAUTION Avoid inserting nails wire etc through any holes in the oven during operation CAUTION Personnel should not be exposed to the microwave energy DOOR LATCHING ADJUSTMENT WARNING DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX PLACE A TAG ON THE CIRCUIT BOX ...

Страница 30: ...9 5 Mega ohm once the capacitor is charged 5 A shorted capacitor will show continuous continuity 6 An open capacitor will show a constant 9 5Mega ohm due to the internal 9 5Mega ohm resistor 7 Resistance between each terminal and chassis should be infinite Diode If the diode is suspected substitute a known good diode and operate oven Low Voltage Transformer WARNING DISCONNECT THE ELECTRICAL POWER ...

Страница 31: ...move MAIN COVER 2 Remove CONTROL PANEL ASSEMBLY 3 Discharge high voltage capacitor by shorting the terminals of the high voltage capacitor with an insulated handled screwdriver or insulated jumper wire 4 Check 20 Amp Fuse for continuity and proper size NOTE Do not use any other fuse or size except 20 Amp 5 Remove monitor switch leads to isolate switch A Check continuity of switch with door open an...

Страница 32: ...sed to customer and after any repair NOTE During reassembly before installing outer panel and after all necessary components are replaced and adjusted a radiation leak test MUST be performed prior to installing the outer cover NOTE Leakage must be less than 2 mW cm2 milliwatts per centimeter squared for a fully assembled oven NOTE Leakage must be less than 5 mW cm2 for an oven with the outer cover...

Страница 33: ...SPLAY Displays information needed by the customer to operate the oven THERMISTOR Signals the control board the temperature in the cavity The control board then keeps the fans running as needed at the end of a cook cycle up to approximately 1 minute Also provides information to adjust cooking parameters based on oven temperature Can turn oven off if temperature reaches between 600 F and 700 F DIODE...

Страница 34: ...tors door position signals control board which controls direction and operation of the damper door motor If switch shorts or opens the damper door will continually cycle open and closed until one complete switch cycle is detected THERMAL FUSE Monitors temperature in damper housing HALOGEN LAMPS Supplies visible and infrared light used to cook the product MAGNETRON Provides microwave energy to cook...

Страница 35: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 35 of 52 TCO Locations Switch Locations ...

Страница 36: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 36 of 52 CONTROL BOARD LAYOUT Control Board Connector Identification ...

Страница 37: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 37 of 52 AIR FLOW DIAGRAMS Combi Cook ...

Страница 38: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 38 of 52 Magnetron Microwave ...

Страница 39: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 39 of 52 COMPONENT WIRING DIAGRAMS Thermal Cut Outs ...

Страница 40: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 40 of 52 Door Switches ...

Страница 41: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 41 of 52 Halogen Lamps ...

Страница 42: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 42 of 52 SCHEMATIC DIAGRAM ...

Страница 43: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 43 of 52 ...

Страница 44: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 44 of 52 WIRING DIAGRAM ...

Страница 45: ...FLASHBAKE MICROWAVE OVEN ELECTRICAL OPERATION Form 24694 April 2001 Page 45 of 52 ...

Страница 46: ... by control board depending on signals received from thermistor and cooking controls 1 Lamps and magnetron are energized a Relays RY20 and RY21 for lower lamps and relays RY19 and RY22 for upper front lamp energize and lamps start Approximately 2 seconds later relays RY18 and RY23 energize and upper rear lamp starts b Relay RY2 energizes and powers magnetron c Lamps and magnetron cycle on 32 secon...

Страница 47: ...ord head use your volt ohm meter and check resistance from L1 to Neutral The resistance should be approximately 22 ohms Note that this reading is shown in the schematic diagram at the low voltage transformer primary resistance 3 If you do not read continuity from L1 to Neutral suspect the following open fuse open cavity thermal cut out TCO low voltage transformer open primary winding open magnetro...

Страница 48: ...ty temperature detected during microwave oven cooking SYMPTOM POSSIBLE CAUSES Oven does not operate No clock display oven cavity lamp or keypad responses 1 Power cord 2 Main circuit breaker open 3 20 Amp fuse open 4 Open cavity thermal cut out 5 Open low voltage transformer winding 6 Open magnetron thermal cut out 7 Open thermal fuse 8 Control board malfunction 9 Associated wiring and wiring conne...

Страница 49: ... halogen lamp covers need cleaned to remove build up of grease and food spatterings 7 Check upper and lower halogen lamp operation 8 Perform microwave performance test 9 Restricted air flow Improper air flow can cause the halogen lamps or magnetron tube to cycle on the thermal cut outs Food items appear to be over cooked or burned 1 Incorrect type of cooking selected microwave vs combi cook 2 Inco...

Страница 50: ...FLASHBAKE MICROWAVE OVEN TROUBLESHOOTING Form 24694 April 2001 Page 50 of 52 TROUBLESHOOTING FLOW CHART ...

Страница 51: ...17 Cavity thermistor 854065 18 Magnetron fan assembly 854065 19 Magnetron assembly 854065 20 Thermal cutout cavity 854065 21 Transformer high voltage 854065 23 Lower lamp thermal cutout 854065 26 Switch micro interlock monitor 854065 27 Switch micro primary door 854065 34 Vent motor capacitor 854065 39 LED assembly 854065 42 Upper blower assembly 854065 43 Lower blower assembly 854065 44 Fuse 8540...

Страница 52: ...FLASHBAKE MICROWAVE OVEN F24694 April 2001 Printed in U S A NOTES ...

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