Lincoln 1100 Series service manual Main fan runs after

Main fan runs after	Oven Start Relay	Contacts should open when main fan
20 minute cool down		switch is turned off.
	20 Minute Time Delay	120 VAC at terminal #2 should discontinue approxi
		mately 20 minutes after main fan is switched off. If
		the oven start relay contacts are open, and
		the voltage continues at terminal #2 of the 20 minute
		timer, for more than 20 mins., replace the timer.
	Oven Fan Relay	Check to insure that the contacts are opening after
		the coil is de-energized.
	20 Minute Time Delay	NOTE: ON/OFF operation of the fan switch
		will set the timer to 20 minutes. If the
		timer is accidentally reset, turn off main breaker for
		15 seconds to cancel.
No control box cooling		Check for main fan operation. If not operating, refer
to “Oven Fan Will Not Run”.	Oven Start Relay	Check relay contacts. 120 VAC
		should be present.
	Cooling Fan Motor(s)	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 of the
		fan motor.
No automatic control	Thermostat, Cooling	Check the cooling fan thermostat. box cooling
Fan		(Thermostat closes at 120°F and opens at 100°F.)
		With the cooling fan thermostat pre-heated, check for
		continuity. If switch is open, replace.
	Cooling Fan Motor(s)	120 VAC should be present at the fan motor. If
		voltage is present, check foropens or shorts.
		WITH POWER OFF: Check for locked
		rotor of the fan motor.
Control box cooling fan	Thermostat, Cooling	This normally open thermostat should
continues to run	Fan	close at 120°F (48.9°C) and reopen at
		100°F (37.8°C).
Oven will not heat	Main Fan Motor	Check for main fan operation. If it is not
		operating, refer to “Oven fan will not run”.
	Heat Switch	With switch on, check for 120 VAC on
	both terminals to neutral.	Replace if defective.
	Air Pressure Switch	This normally open switch should close
		when the main fan is activated. Adjust if
		necessary (Refer to Section D).
		Replace if defective.
	Fuse, 3 Amp	Check, replace if necessary.
	Fuseholder	Check, replace if necessary.
	Temperature Control	Check for 120 VAC supply at
		terminal #11 to neutral on temperature
		control. If no voltage is present, trace
		wiring back to 3 amp fuse. Turn the
		temperature adjustment knob to
		maximum temperature position and
		check for 120 VAC at the load terminal
		(#9) and neutral. If 120 VAC is
		present and unit is not heating, refer
		to “Mercury Contactor” for next check.
		If 120 VAC is not present, proceed.
	Thermocouple Probe	WITH POWER ON AND THERMOCOUPLE
		LEADS ATTACHED TO THE TEMPERATURE
		CONTROL BOARD: measure D. C.
38		Impinger II - 1100 Series Service Manual - International