Lincoln IMPINGER 1100, Руководство по обслуживанию

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Impinger II –1100 Series Service Manual - Domestic 18
TROUBLESHOOTING GUIDE 1116 - 1117
GAS OVENS
MODEL 1116 / NATURAL GAS / 120VAC / 60 HZ / 1 PHASE
MODEL 1117 / L.P. GAS / 120VAC / 60 HZ / 1 PHASE
REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS
SYMPTOM POSSIBLE CAUSE EVALUATION
Oven fan will not run Incoming Power Supply Check breakers/Reset if required Check power plug to
be sure it is firmly in receptacle. Measure incoming
power/call Power Co. if needed.
Main Fan Switch Check continuity between switch terminal.
20 Minute Time Delay Check for 120 VAC at terminal #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
Main Fan Relay 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.Fuse, 10 Amp Check, replace if
necessary
Fuse Holder Check, replace if necessary.
Main Fan Motor 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 main fan cool down
Main fan runs after 20
minute cool down
20 minute cool down
20 Minute Time Delay Relay
Main Fan Relay
Check for 120 VAC at pin #2 and #3 while main fan is
running. Turn off main fan switch and 120 VAC should
continue to be present for 20 minutes at terminal 2.
Check if relay is operating and terminals are remaining
closed for main fan cool down of 20 minutes
NOTE : The time delay relay will keep the coil of main fan relay
closed, maintaining main fan operation for cool down for
approximately 20 minutes.
Time Delay Relay 120 VAC at terminal 2 should discontinue
approximately 20 minutes after the main fan switch is
switched off. If the switch is open and voltage
continues at terminal 2, replace Time Delay. When
voltage at terminal 2 of Time Delay ceases ,the main
fan relay must open.
No control box cooling Incoming Power Check main circuit breakers, reset if required, call power
company if needed.
Main Fan Switch Check continuity between switch terminals.
20 Minute Time Delay With fan switch on, check for 120 VAC at terminal 2 of
Time Delay.
Main Fan Relay Check continuity of 120 VAC coil. Check for power to
the relay coil (120 VAC).
Cooling Fans 120 VAC should now be at the fan motors. If voltage is
present, check motors for shorts or opens WITH
POWER OFF: Check for locked rotor.