Lincoln 1100 Series Manuel D’Utilisation

Relay, Main Fan

Check if relay is operating and that the contacts r

emain closed during the 20 minute cool down.

Main fan continues to

20 Minute Time Delay

NOTE: ON/OFF operation of fan switch

to run after cool down

will set the timer to 20 minutes. If the

timer is accidentally reset, turn off main breaker for

15 seconds to cancel. If 120 VAC continues to be

present at terminals 2 and 3 after 20 minutes, replace

the timer.

Relay, Main Fan

Relay Contacts should open when the relay

coil is de-energized.

No control box cooling

Main Fan

Check for main fan operation. If not operating, refer

to “Oven Fan Will Not Run”.

Relay,Oven Start

Check relay contacts. 120 VAC should be present.

Cooling Fan Motor

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 Fan

Check the cooling fan thermostat. box cooling

(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

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.

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”.

Switch, Heat

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.

Temperature Control

Check for 120 VAC supply at terminal

#11 to neutral on temperature control.

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.

millivolt output of these leads. Refer

to thermocouple chart in Section D

for proper readings. If these readings

are not achieved, replace thermocouple.

Temperature Control

WITH POWER OFF: remove the

Potentiometer

potentiometer leads from the

Impinger II - 1100 Series Service Manual - International