Alto-Shaam xcelerate XL-400 Service Instructions Manual

Brand: Alto-Shaam

Model: xcelerate XL-400

Type: Service Instructions Manual

This manual is also suitable for

xcelerate XL-300

W164 N9221 Water Street • P.O. Box 450 • Menomonee Falls, Wisconsin 53052-0450 • U.S.A.

PHONE: 262.251.3800 800.558.8744 U.S.A./CANADA 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

Cleaning ................................................................................................ 1

Touch Screen Firmware Update ............................................................ 4

How to Change the Door Switch .......................................................... 5

How to Change the Motor ..................................................................... 9

How 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

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 1.

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The oven should be cleaned inside and outside on a daily

basis. Outside cleaning: Never use steel wool or abrasive

cleaning material to clean the exterior. Use a moist towel

or recommended stainless steel cleaner.

• Switch off the oven and keep the door closed. The oven

fans will cool down the oven automatically.

• Before starting to clean the oven wait at least 30

minutes to cool down.

• Be careful and make sure it is not hot before reaching

into the oven. Wait until it is cool.

• Please remove the stone and the stone holder made 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 chamber must be wiped

down with clean water.

• We recommend using a liquid detergent, which is

certiﬁed for food industrial use and has capabilities of

removing lipids, proteins and organic substances.

DAILY CLEANING

Wait for the oven to cool down completely. Wear safety

gloves. Remove the stone holder and stone. You may want

to clean the oven in the morning when the oven is cool -

before food production begins.

Xcelerate™ Hi-Speed Oven

CLEANING

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 2

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Spray oven cleaner on the side and back walls of the

baking chamber and on the bottom of the baking chamber.

Soak the wire cooking shelf with cleaning detergent to

remove food residue. Wear safety gloves.

Wipe with a damp cloth. Afterwards rinse with fresh

water. You may 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 particles from the surface.

As the water soaks in, wipe off food residue from the door

plate and rinse surface by wiping with a sponge and clean

warm water.

Xcelerate™ Hi-Speed Oven

CLEANING

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 3.

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WEEKLY CLEANING

Regularly clean the back vents of the oven of dust and

grease. Be sure the oven has cooled down and the fans are

not running. Use a damp towel. If the cooling vents are

blocked, the oven could malfunction.

Regularly check that the wall clearances are sufﬁcient

otherwise damage to the appliance and surroundings may

occur. Do not store anything directly on the oven.

Keep at least 15 cm distances from 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 same way. Be sure the

contact area between door and oven front is always clean

and free of debris. Build up of particles in this area can

cause the oven to malfunction.

Wipe the inside of the baking chamber as the detergent

has soaked in. Rinse surfaces by wiping with a sponge and

clean warm water.

Xcelerate™ Hi-Speed Oven

CLEANING

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 4

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STEP 1: PREPARE FILE

Copy the ﬁrmware ﬁle named “AS420UI1.bin” to a good

quality USB drive. The ﬁle name must always be the same.

This means you have to make sure not to mix up different

ﬁrmware ﬁles on your computer. After the update is ﬁnished,

always check the version number on the start screen to be

sure the right version is installed.

STEP 2: PREPARE OVEN

Connect the USB drive to the USB port of the oven and

open the door. Disconnect the main power for 10 seconds.

Alternatively turn off the main circuit breaker for 10 seconds.

STEP 3: PERFORM UPDATE

Reconnect the main 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 close the door. Then

disconnect the main power again for 10 seconds.

STEP 5: POWER ON AND VERIFY

Connect the main power again. Then power on the control

panel. On the bottom of the start screen the current ﬁrmware

version is displayed.

Xcelerate™ Hi-Speed Oven

TOUCH SCREEN

FIRMWARE UPDATE

• Carefully read the entire document before trying to update the ﬁrmware.

• Not following these steps can damage the control board permanently.

• The update should only be performed by qualiﬁed service personnel.

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 5.

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Xcelerate™ Hi-Speed Oven

CHANGE DOOR SWITCH

First check that the door is closing properly. If debris

builds 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 of the door switch.

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 6

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Xcelerate™ Hi-Speed Oven

CHANGE DOOR SWITCH

STEP 5

Reinstall the electric board with the six screws. Then

reconnect the cables to the PCB (keypad cable black side

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 at this point, so the new door switch can move

freely for later adjustment.

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 7.

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Xcelerate™ Hi-Speed Oven

CHANGE DOOR SWITCH

STEP 6

Connect the cables back to the new door switch assembly. The cables are marked S11, S12, etc. The ﬁrst two letters

indicate which switch to connect the cable to (S3 at the top, S1 at the bottom left, S2 at the bottom right). The third

number indicates which contact of each switch. (1 upper contact COM, 2 middle contact NO, 3 lower contact NC). For

example 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 outside of the switch. Do

not press so hard that the trigger bends over the housing

of the switch. When you have the right position, ﬁx the

position with the screw. Repeat with the lower switches.

Push the assembly to the right position where the trigger

starts to touch the housing and tighten the screws.

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 8

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STEP 9: CHECK THE SWITCHING SEQUENCE

Open and close the door very slowly, so you hear the ‘click’ noise of the switches three times. Also watch the

switches.

STEP 8: CONTINUED

Xcelerate™ Hi-Speed Oven

CHANGE DOOR SWITCH

When closing the door S2 must ‘click’ ﬁrst, after that S1 and S2 should ‘click’.

S2 is the safety switch. If S2 does not switch before S1 and S3 switch (‘click’), a short circuit will occur and circuit

breaker F1 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 the oven, start a cooking sequence that includes the use of microwave power and slowly open the door. If all works

ﬁne, open the door quickly. If the adjustment is correct the oven will work normally. If F1 trips while opening the door,

checktheswitchesagain.Alwaysdisconnectthemainpowerplugwhenworkingonthedoorswitch!

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 9.

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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

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 10

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STEP 4

Use a wrench tool to loosen 8 screws from motor.

Afterwards, you can dismantle the motor from the

machine.

CHECK THE TURNING DIRECTION

When the frequency 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-black change to blue-white-black.

Xcelerate™ Hi-Speed Oven

CHANGE MOTOR

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 11.

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Xcelerate™ Hi-Speed Oven

CHANGE PCB

STEP 1

Unplug the oven or disconnect the main power to the oven

(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 control box.

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 12

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STEP 7

The control 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

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 13.

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STEP 11

Reconnect all cables of the PCB. Caution: Ensure power to

the PCB is connected correctly or damage to the PCB will

occur.

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?

• Speaker works after end of baking time?

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 14

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STEP 1

If the Alarm is not working ﬁrst check in Service mode

that Speaker Volume is not set to 0.

Check if the oven cooling fan is 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 the PCB.

Xcelerate™ Hi-Speed Oven

CHANGE SPEAKER

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 15.

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Xcelerate™ Hi-Speed Oven

CHANGE SPEAKER

STEP 4

Install 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.

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 16

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Xcelerate™ Hi-Speed Oven

CHECK MICROWAVE

1. WATER HEATING TEST 1 LITER, 2 MINUTES

a. 59°F (15°C) warmer: Normal

b. 32°F (0°C) warmer: likely Mic Control problem, connection, capacitor 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, MICROWAVE CONTACTOR)

4. CHECK TRANSFORMER

5. CHANGE DIODE AND CAPACITOR

6. CHANGE MAGNETRON

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 17.

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Xcelerate™ Hi-Speed Oven

CHECK MICROWAVE

STEP 1: TEST HEATING FUNCTION

Cool down the oven and set “SET TEMP” in “SERVICE

MODE” to 68°F (20°C) to deactivate convection heating.

STEP 4

When ﬁnished stir the water a bit and measure the

temperature again. The water should be approximately

59°F (15°C) warmer than before. This value may vary

depending on ambient temperature, line voltage and

water container. If you have this temperature increase 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 microwave. The voltage, high frequency and magnetic

ﬁelds can interfere and prevent getting an accurate

reading).

STEP 2

Place a plastic bowl with about one liter of water into the

baking chamber. Measure and note the temperature.

STEP 3

Go to “MANUAL MODE” and set the parameters

TIME 2:00 Minutes TEMP 68°F (20°C)

AIR 10% MIC 100%

then press “START”

XCELERATE SERVICE INSTRUCTIONS • XLSERVICE • 18

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STEP 6

Power the oven back on, place a cup of water inside the

oven, then start the microwave. Normally there should

be 6 to 8 Amps going through S32, and all microwave

components are working properly. If the water still does

not heat check if the antenna in the top of the baking

chamber is installed properly.

If you measure a current higher closer to 12A the

magnetron is likely faulty or broken. Alternatively,

the transformer could also be damaged. Change the

magnetron ﬁrst then the transformer since the magnetron

is most likely to fail.

If the measure is a lower current closer to 3A, it is likely

the diode is damaged or broken.

If the measure is 4 – 5A, it is likely the capacitor is

damaged or broken.

Finally if there is no current at all, 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 and start

microwave operation. When you start you should measure

line voltage at the cables T2L and T2N. Then the

microwave circuit is supplied with power correctly and

proceed with STEP 9.

If there is no voltage when the microwave function is

started, check if the microwave output of the control PCB

is active. If not, the door switch input of the PCB may

not be active. Check K2 and S1, which produce the input

signal. It is very unlikely the PCB itself has a problem,

andthereusuallyisnoneedtochangethePCB!

Check if Relays/Contactor K1 is working.

Check the function and adjustment of the door switch

assembly.

Xcelerate™ Hi-Speed Oven

CHECK MICROWAVE

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Alto-Shaam xcelerate XL-400 Service Instructions Manual

Brand: Alto-Shaam

Model: xcelerate XL-400

Type: Service Instructions Manual

This manual is also suitable for

xcelerate XL-300

Download PDF

report

Alto-Shaam xcelerate XL-400 Service Instructions Manual

This manual is also suitable for

Alto-Shaam xcelerate XL-400 Service Instructions Manual

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