Lincoln 1100 Series Manuel D’Utilisation

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.

Impinger II - 1100 Series Service Manual - International