Trouble Shooting Guide, Electric Oven 1151 - Lincoln Impinger Conveyor Ovens 1100 Series Service Manual

REFER TO PROPER SCHEMATIC FOR INDENTIFIED COMPONENTS
SYMPTON
Oven fan will not run
No main fan cool down
Impinger II - 1100 Series Service Manual - International
TROUBLESHOOTING GUIDE ELECTRIC OVEN
MODEL 1151 200 VAC THREE PHASE 60 HZ
POSSIBLE CAUSE
Incoming Power Supply
Fuses,10 Amp,Main Fan
Fuseholder
Fuses, 1 Amp,
Transformer
Fuseholder
Transformer, Control
Thermostat, High Limit,
Oven Cavity
replace thermostat.
Switch, Main
Fan
Relay, Oven Start
20 Minute Time Delay
Main Fan Relay
Main Fan Motor
Capacitor
20 Minute Time Delay
EVALUATION
Check circuit breakers. Reset if required.
Call Power Co. if needed.
Check, replace if necessary.
Check, replace if necessary.
Check, replace if necessary.
Check, replace if necessary.
120 VAC ± 10% should be present
at secondary of transformer. If
proper voltage is not present, check
transformer primary for proper
input. Replace as needed.
Terminals are normally closed. If open,
reset the thermostat and test for proper
operation. If it will not reset and hold,
Check for continuity between switch
terminals.
Check for continuity at relay coil, and
visually check for pull in of contacts.
Check for 120 VAC at terminals #1 to
neutral on 20 minute Time Delay Relay.
If no voltage is present, trace wiring
back to power source. If voltage is
present at terminal #1, check for 120
VAC at terminal #2 to neutral. If no voltage is
present, and Main Fan Switch is closed, replace
Time Delay.
Check for 120 VAC to coil of the Relay.
If no voltage is present, trace wiring
back to 20 minute Time Delay Relay. If
voltage is present, check to insure
contacts are closing.
Check for opens, shorts, or grounds.
WITH POWER OFF: Turn fan blade to
check for locked rotor.
Check for opens, shorts, or grounds.
Check for 120 VAC at terminal #2 to
neutral while oven is "on". Turn off the
main fan switch, 120 VAC should
continue to be present for 20 minutes.
If voltage is not present for
approximately 20 minutes, replace the
timer.
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