Trouble Shooting Guide, Electric Ovens 1104, 1105, 1106 - Lincoln Impinger Conveyor Ovens 1100 Series Service Manual

MODEL 1104
MODEL 1105
MODEL 1106
REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS
SYMPTON
Oven fan will not run
No control box cooling
No main fan cool down
Oven will not heat
34
TROUBLE SHOOTING GUIDE
ELECTRIC OVENS
380/220 VAC
415/240 VAC
240 VAC
POSSIBLE CAUSE
Incoming Power Supply
Fuse, 1 Amp,
Fuseholder
Switch, Main Fan
Transformer, Control
Main Fan Relay
Fuse 10 A. Main Fan
Fuse Holder
Main Fan Motor
Capacitor
Cooling Fan Motor
Cool Down Thermostat
Main Fan Motor
High Limit Thermostat,
THREE PHASE
THREE PHASE
SINGLE PHASE
EVALUATION
Check circuit breakers. Reset if required.
Call Power Co. if needed.
Check, replace if necessary.
Check, replace if necessary.
Check for continuity between switch terminals.
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.
Check continuity to 120 VAC coil. Check
for power to relay coil (120 VAC). Check for 220/240
VAC to the relay terminals. Check, replace
if necessary.
Check, replace if necessary.
Check, replace if necessary.
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 main fan operation. If not operating, refer
to "Oven fan will not run".
120 VAC should be present at the fan motor. If
voltage is present, check for opens or shorts.
WITH POWER OFF: Check for locked rotor
on fan motor.
Check cool down thermostat (thermostat
closes at 160°F and opens at 140°F).
Check for power (220/240 VAC) at cool down thermo
stat. With cool down thermostat preheated, check for
continuity. If switch is open, replace.
Check for main fan operation. If it is not
operating, refer to "Oven fan will not run".
Terminals are normally closed (open at
190°F). If open, reset the thermostat and
test for proper operation. If it will not reset and hold,
then replace.
Impinger II - 1100 Series Service Manual - International
50 HZ
50 HZ
50 HZ