Lektro-Vend Combo Series, Service Manual

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CAUTION: WHEN TESTING ELECTRICAL VOLTAGES USE EXTREME CARE AS NOT TO GET
ELECTRICALLY INJURED. WHEN CHANGING ANY ELECTRICAL COMPONENTS POWER MUST BE
REMOVED FROM THE MACHINE BEFORE ANY WORK IS TO BE PERFORMED, BY UNPLUGGING THE
MACHINE OR TURNING POWER OFF TO OUTLET WITH THE RESPECTIVE CIRCUIT BREAKER.
4: Possible Cause: Defective wiring or wiring connections.
4: Possible Solution: Test the electrical circuit from the control board to the display. This may be tested by
using an ohmmeter with power removed. Check to ensure that there is electrical continuity in each wire.
HELIX DRIVE MOTOR
A. Symptom: A selection fails to make a vend
1: Possible Cause: The selection spiral assembly is jammed and will not complete its full cycle.
1: Possible Solution: Check to see if the product that is loaded in the helix is free from obstructions on both
sides. Check to see if also the product is not too tight for the helix size being used. This may be done by lifting
the product up out of the helix by hand. If the helix is also lifted off the tray, then that product is too tight for
that helix size. Move the product to a larger size helix so it may vend freely.
NOTE: Any time a motor is taken out of service, the motor must be put back into by service vending
the selection to allow the control board to recognize the motor.
2: Possible Cause: The displayed price on the column shelf is not the same as the control board memory
for that selection.
2: Possible Solution: Place the machine in the service mode. Follow the instructions for setting the prices.
When you make the selection that you want to check the price to ensure the current price is the same as the
price on the shelf for that selection. If not, change the price to match the price on the shelf and test vend that
selection using money.
3: Possible Cause: Defective vend motor.
3: Possible Soiution: To test to see if a vend motor is working, unplug the tray with the defective motor and
plug the tray into a known good location. Now test vend the tray assembly with the bad motor. If the motor
runs in the new tray location, then we know that the motor is good. To test vend a single selection of
a
complete
tray assembly, see the section on service vending a selection. If the motor is defective, replace the defective
motor and service vend the new motor two times to insure proper operation and recognition by the control
board.
4: Possible Cause: Defective control board.
Possible Solution: Replace control board.
NOTE: When you replace the control board ALWAYS DISCONNECT POWER TO THE EQUIPMENT. After
the control board is installed, apply
power,
go into the service mode and press selection button then press
selection button You have now aligned the control board with the motors. It will be necessary now to reset
prices (see section
setting prices).