Lincoln Foodservice 1421-000-E, Service Manual

Page: 8 / 24

Impinger I -–Adv Digital – Electric Service Manual - International
8
plug to be sure it is firmly in receptacle. Measure
incoming power, call power co. if required.
Fuse, 10 Amp Check, replace if necessary.
Fuse holder Check, replace if necessary.
Switch, oven power Check for line voltage supplied to switch. If no voltage
is present, trace wiring back to fuse holder. Check
continuity between switch terminals. Replace switch as
needed.
Control transformer Check for supply voltage to primary of control
transformer. If no voltage is present, trace wiring back to
oven power 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 #8 to neutral. If no voltage is present, trace
wiring back to oven power switch. If voltage is present,
but the motor will not run, check the motor windings for
opens or shorts. If any of the above checks fail, replace
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.
REMOVAL, INSTALLATION & ADJUSTMENTS
IMPINGER ADVANTAGE SERIES
CAUTION!
BEFORE REMOVING OR INSTALLING ANY COMPONENT IN THE IMPINGER
OVEN BE SURE TO DISCONNECT ELECTRICAL POWER AND GAS SUPPLY