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Impinger II – Advantage Digital Service Manual - International
12
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
TROUBLESHOOTING GUIDE
IMPINGER II ADVANTAGE
SERIAL NUMBER 2038616 AND ABOVE
(OVENS WITH PUSH BUTTON CONTROLS)
MODEL 1164-000-EA 400/230VAC 50HZ. 3 PHASE
REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS
SYMPTOM POSSIBLE CAUSE EVALUATION
Oven fan will not run Incoming power supply Check breaker, reset if required. Check power plug to
be sure it is firmly in receptacle. Measure incoming
power, call power co. if needed.
Oven cavity hi-limit
thermostat
Terminals are normally closed, opens at 660°F (350°C).
If open, reset and test oven for proper operation. If
thermostat will not hold for maximum oven temperature,
and oven is not exceeding control setting, check for
proper location of capillary bulb ion its spring holder. If
above checks are okay, replace hi-limit thermostat.
Fuse, 10 amp Check, replace if necessary.
Fuse holder Check, replace if necessary.
Hi-limit thermostat, control
box
Check for voltage on both sides of switch. Terminals are
normally closed. If open, reset and test oven for proper
operation. If thermostat will not hold, and control box
temperature is not exceeding 140°F (60°C), replace
thermostat.
Switch, main fan With power off, check continuity between switch
terminals. Replace as needed.
Motor, main fan Check for opens, shorts or grounds. With power off, turn
fan blade to check for locked rotor.
Capacitor Check for shorts or grounds.
WARNING: Capacitor has a stored charge, discharge
before testing.
No control box cooling Incoming power supply Check breaker, reset if required. Check power plug to
be sure it is firmly in receptacle. Measure incoming
power, call power co. if needed.
Oven cavity hi-limit
thermostat
Terminals are normally closed, opens at 660°F (350°C).
If open, reset and test oven for proper operation. If
thermostat will not hold for maximum oven temperature,
and oven is not exceeding control setting, check for
proper location of capillary bulb in its spring holder. If
above checks are okay, replace hi-limit thermostat.
Fuse, 10 amp Check, replace if necessary.
Fuse holder Check, replace if necessary.
Hi-limit thermostat, control
box
Check for voltage on both sides of switch. Terminals are
normally closed. If open, reset and test oven for proper
operation. If thermostat will not hold, and control box
temperature is not exceeding 140°F (60°C), replace
thermostat.
Switch, main fan With power off, check continuity between switch