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Alto-Shaam xcelerate XL-300, Service Instructions Manual, Page: 23 / 27

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Alto-Shaam xcelerate XL-300 Service Instructions Manual Download Page 23

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 21.

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Xcelerate™ Hi-Speed Oven

CHECK TURNINg DIRECTION 

OF THE T-VERTER

ChECK
When the frequency inverter has been connected start 
the oven, and shortly afterwards, open the door so the fan 
stops.
Stand behind the oven to observe the motor rotation when 
it slows down (green arrow).
The rotation direction must be counter clockwise when 
viewed from behind the oven (red arrow).

adjuSt
If direction is ok nothing has to be done.
If the motor is turning in the wrong direction either 
exchange two phases of the motor. Or move the direction 
jumper of the frequency inverter from contact3 (FWD) to 
contact4 (REV).

Summary of Contents for xcelerate XL-300

Page 1: ...ANADA FAX 262 251 7067 800 329 8744 U S A ONLY www alto shaam com D U E T O O N G O I N G P R O D U C T I M P R O V E M E N T S P E C I F I C A T I O N S A R E S U B J E C T T O C H A N G E W I T H O U T N O T I C E P R I N T E D I N U S A XL 300 XL 400 Xcelerate Hi Speed Oven SERVICE INSTRUCTIONS XLSERVICE REV 1 08 14 ...

Page 2: ...w to Change the PCB 11 How to Change the Speaker 14 How to Check the Microwave 16 How to Check Turning Direction of the T Verter 21 How to Connect the Transformer Safety Thermostat 22 How to Improve Leakage Current Disable EMI Filter 23 Reset Overheat Protector 25 Xcelerate Hi Speed Oven TABLE OF CONTENTS ...

Page 3: ...de of chrome nickel steel For safety pull the plug before cleaning the oven Do not use a water jet to clean the appliance Sever damage or electrical hazard could result The warranty becomes void if appliance is flooded Use a damp clean cloth or sponge to clean the appliance If the oven is heavily soiled a liquid detergent can also be used After the application of liquid detergent the baking chambe...

Page 4: ...y also use a scotch brite sponge or a plastic scouring pad to clean the wire cooking shelf Before cleaning the stone be sure the stone has cooled completely to prevent cracking To clean the stone use a damp towel or sponge and fresh water Do not use a strong detergent This can affect the taste of the food Discolored marks on the stone are not a sanitation threat but be sure to remove larger partic...

Page 5: ... heat sources like a grill or other heating appliances Keep at least 102mm space on the left and right sides and 300mm clearance from the back An optional Alto Shaam heat shield can be used in the back to reduce the rear clearance requirement to 0mm Failing to do so will void warranty and cause premature failure of components Please refer to the instruction manual Clean the front of the oven the s...

Page 6: ...n power and wait for 20 seconds The Update process starts instantly The LED on the USB Drive flashes fast then stops then flashes fast again then stops and flashes slowly update finished During these 20 seconds DO NOT interrupt power DO NOT remove the USB drive DO NOT touch any buttons switches Step 4 Reset After 20 seconds when the LED on the USB drive flashes slowly remove the USB drive and clos...

Page 7: ... up on the door it might not close properly and the door switches are not activated properly Step 1 Unplug or disconnect the main power of the oven not only the fuse then open the service panel on the right side of the oven Remove the top of the oven The door switch is located on the upper left corner of the electric board Open the door Step 2 Disconnect the cables of the PCB Disconnect the cables...

Page 8: ...e up Step 3 Unscrew the six mounting screws of the electric board two at the bottom two at the upper left two at the upper right Then carefully move the electric board towards you to gain access behind the electric board Step 4 Now unscrew the four screws of the door switch assembly remove it and assemble the new door switch assembly Reassemble the four screws But do not fully tighten the screws a...

Page 9: ...xample S11 has to be connected to the upper COM contact 1 of the Switch S1 at the bottom right Step 7 Adjusting the Door Switch With everything back in place the four screws of the door switch have to be loose otherwise the door switch assembly might be damaged when closing the door Slowly close the door Step 8 Push the upper switch towards the left until the trigger of the switch just touches the...

Page 10: ...1 will trip This mechanism is an international standard that disables microwave operation if there is a malfunction of a switch or the adjustment is not correct If this type of short circuit occurs more than two or three times switch S2 is likely damaged and must be replaced again When you are sure the switch activation sequence is correct you can apply power to the oven Place a glass of water in ...

Page 11: ...6 2 2 5 1 3 8 0 0 Xcelerate Hi Speed Oven change motor Step 1 Dismantle three cables black blue white from Inverter Step 2 Use the tool to loosen 4 screws around the motor and then dismantle the isolation material Step 3 Loosen 2 screws from magnetron and dismantle the small stainless steel panel ...

Page 12: ...quency inverter has been connected start the oven then quickly open the door to stop the fan Standing behind the oven you can observe the motor turning when it slows down see green arrow The turning direction must be counter clockwise looking from behind the oven see red arrow If the motor is turning in the wrong direction swap the sequence of two of the motor cables for example from white blue bl...

Page 13: ...en not only the fuse then open the service panel on the right The PCB is located on the lower left of the electric board Step 2 Disconnect the green plugs of the PCB Step 3 Disconnect the gray display cable Step 4 Disconnect the USB cable Step 5 Carefully disconnect the keypad cable at the bottom Step 6 Now the control box at the front has to be removed Unscrew the two screws at the bottom of the ...

Page 14: ...rol box then needs to be slid upwards Step 8 Unplug the small white display cable Now the control box can be removed Step 9 Unscrew the four screws of the PCB on the electric board and remove it Assemble the new PCB Step 10 Reconnect the white cable of the display and reassemble the control box Xcelerate Hi Speed Oven change PCB ...

Page 15: ...ccur Xcelerate Hi Speed Oven change PCB All plugs have a clear direction except the green black keypad cable at the bottom The black mesh must face upwards Check that all pins are connected that none are free or loose If connected wrong the buttons of the keypad cannot work Reassemble the oven and test all functions Display works Temperature reading is correct USB transfer can work All keys work S...

Page 16: ... working and the ventilation is sufficient If the oven overheats the speaker can be damaged If the speaker is still not working unplug the unit or disconnect the main power of the oven then open the service panel on the right The Speaker is located on the bottom next to the PCB Step 2 Cut the white cable tie so the two cables of the speaker are free Then unplug the double plug of the speaker from ...

Page 17: ...all the new speaker and reconnect it to the PCB A111 is the upper cable A112 is the cable at the bottom of the plug If the new speaker does not work exchange the PCB separate instruction Step 3 Unscrew the two red cables A111 and A112 from the plug Take the plug and attach it to the new speaker Unscrew the four screws of the old speaker and remove it from the oven ...

Page 18: ...or or diode defective c 41 F 5 C warmer likely Magnetron or Diode defective 2 Measure Microwave current S32 a 6A 8A Normal b 0A Connection loose Microwave Control problem Transformer short circuit Door Switch problem Diode defective c 3A Likely Diode defective exchange d 4 5A Likely Capacitor defective exchange e 12A Likely Magnetron defective exchange 3 Check Microwave Control PCB door switch mic...

Page 19: ...crease the Microwave works properly If there is a problem with the microwave you will not have a temperature increase at all or only a minor increase of less than 41 F 5 C In this case continue with amps measurement Step 5 Amp Measurement Disconnect the main power Open the right side panel of the oven Clamp your amp meter to the cable S32 near the door switch Do not measure near the transformer or...

Page 20: ...l please check for lose cable connection or that all door switches are properly closed These are the components most likely to be affected but are by no means the only components that may be affected Step 7 Checking the control circuit Disconnect the oven from the main power Remove the cables T2L and T2N from the transformer and connect your volt meter Step 8 Power the oven back on close the door ...

Page 21: ...wo minutes Remove the back cover Unscrew the two screws of the diode disconnect the two cables and replace with a new diode Polarity is important The terminal with the larger hole is connected to earth PE The terminal with the smaller hole is connected to high voltage cable D Diode working direction is towards earth Check amps and water heating to confirm that this solved the problem 5000V The fol...

Page 22: ...the pipe firmly hold the antenna of the magnetron and have good contact If a finger is out of shape bend it back first If electrical contact is not good the pipe can melt in this area later and the microwave will not work Step 13 Check the antenna is assembled properly and the nuts of the magnetron are firmly tightened Check amps and water heating to confirm that this solved the problem Xcelerate ...

Page 23: ... shortly afterwards open the door so the fan stops Stand behind the oven to observe the motor rotation when it slows down green arrow The rotation direction must be counter clockwise when viewed from behind the oven red arrow Adjust If direction is ok nothing has to be done If the motor is turning in the wrong direction either exchange two phases of the motor Or move the direction jumper of the fr...

Page 24: ...ron thermostat S5 Therefore first remove the single cable between contactor K2A1 and S51 on the magnetron Xcelerate Hi Speed Oven connect the transformer safety thermostat Step 2 Afterwards connect the cable from the transformer thermostat to contactor K2A1 Two cables from transformer safety thermostat switch Then connect the other cable from the transformer thermostat to S51 on the magnetron ...

Page 25: ... out disabled less leakage current Disabling the switch is not a problem for the EMI since Xcelerate has a dedicated separate filter Newer models are disabled at the factory Step 1 Disconnect the main power of the oven not only the fuse then open the service panel on the right The motor control is located on the upper right corner of the electric board Step 2 Use a screw driver and pry the top cov...

Page 26: ... 8 8 7 4 4 2 6 2 2 5 1 3 8 0 0 Step 4 Use pliers to pull out the switch carefully about 5mm Now the filter is disabled Step 5 Reinstall the top cover First insert the rear hinge of the cover then push it down Reassemble the housing Xcelerate Hi Speed Oven disable secondary emi filter ...

Page 27: ...st few days of operation When the high limit protection switch is tripped it can cause the oven to stop heating A reset can easily be done Step 1 Wait for the oven to cool down a few minutes The overheat protection switch is located at the back on the bottom of the oven under a protection cover Remove the cover Step 3 Please reinstall the safety cover The oven is now ready to use Over time a dirty...

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