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Impinger II – Advantage Digital Service Manual - International
15
Control transformer Check for supply voltage to the primary of control
transformer. If no voltage is present, trace wiring back
to oven fan switch. If voltage is present, check for
24VAC at transformer secondary. If there is primary
voltage, but no secondary voltage, replace control
transformer.
Conveyor motor Check for supply voltage to the conveyor motor at
terminal #6 to neutral. If no voltage is present, trace
wiring back to the oven fan switch. If voltage is present,
but the motor will not run, check the motor windings for
opens or shorts. If any of the above fail, replace the
conveyor motor.
Capacitor, conveyor motor Check for shorts or grounds. Replace capacitor as
needed.
WARNING: Capacitor has a stored charge, discharge
before testing.
Switch, conveyor reversing Check continuity between switch terminals. Replace
switch as needed.
Oven control If there is voltage supplied to the motor, and the motor,
capacitor and reversing switch check good, replace the
oven control.
Conveyor motor runs,
but there is no speed
display
NOTE: Display will indicate
“BELT JAM”
Oven control Check for output voltage from oven control to hall effect
sensor (sensor is located in the conveyor motor).
Measure voltage at the motor connector, red wire and
yellow wire. Voltage should be approx. 10VDC. If no
voltage is present, trace wiring back to oven control. If
there is no voltage output at the oven control, replace
oven control.
Conveyor motor If there is voltage supplied to the hall effect sensor,
check for a frequency output from the hall effect sensor.
Measure frequency across the yellow and white wires in
the motor connector. Frequency reading should be
approx. 25-100 Hz. If these readings are not achieved,
replace conveyor motor. If the readings are achieved,
proceed.
Oven control If the hall effect sensor readings are correct, but there is
no speed indicated on the display, replace the oven
control