Lincoln Impinger Conveyor Ovens 1100 Series - Manual (Page 28)

Check for proper line voltage to
the Burner Blower Motor. This
can be checked at motor connecting
plug terminal 2 and 5. If voltage is
present proceed with next step, if not,
wait 30 seconds, push reset button,
and try to restart. If this fails, check
wires from Thermostat and Burner
Blower Motor to the Ignition Control.
If all above fails and wires are okay,
replace ignition control.
Burner Blower Motor Check for supply voltage to motor.
WITH POWER OFF: turn blower wheel
to check for locked rotor.
If proper supply voltage is present at
motor connecting plug, terminal 2
and 5 and motor does not run, replace motor
Air Pressure Check for proper supply voltage
Switch switching from “N.C.” to “N.O.” as air
(Burner Blower) pressure switch closes.
If above fails, connect a temporary
jumper wire (FOR TESTING ONLY)
from terminal “C” to terminal “N.O.”
on ignition control (bypasses air
switch). NOTE: For Honeywell
control only.
Check for air switch adjustment,
air tube blockage, or misalignment,
and if these fail,replace air pressure switch
Spark Generator A pre-purge-time of 30 to 60 seconds
occurs after blower motor starts, check for supply
voltage atspark generator.
If voltage is not present, check reset
button for the Ignition Control.
If voltage is still not present, replace
ignition control.
If voltage is present, visually check
for spark at ignitor head located in
burner.
Ignitor/Sensor Assembly Check this assembly for visible
damage. If there is no damage, replace
the Spark Generator. If there is
damage, replace the Ignitor/Sensor
Assembly. Also check for frayed or
damaged wires in the burner tube.
Gas Valve Gas valve should open when
proper supply voltage is present.
If no voltage is present, check the
reset button on the ignition
control, and all connections for
tightness. If there is still no
voltage present at gas valve, replace ignition
control.If there is voltage present, check for
gas pressure at the gas pressure tap
located in the gas piping just prior to
the burner. If there is no gas pressure, replace
gas valve
Impinger II - 1100 Series Service Manual - International 28